Electro Industries/GaugeTech Nexus 1262 User Manual Download Page 252

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Doc# E151701 12-2

12: Meter Calculations

Electro

Industries/GaugeTech

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Powered by Innovation™

Root Mean Square (RMS) of Line Voltages: N = number of samples

For Wye: x, y = a,b or b,c or c,a

For Delta: xy = ab, bc, ca

Power (Watts) per phase: N = number of samples

For Wye: x = a, b, c

Apparent Power (VA) per phase:

For Wye: x = a, b, c

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Summary of Contents for Nexus 1262

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Page 3: ...ncluding photocopying record ing or information storage or retrieval systems or any future forms of duplication for any purpose other than the purchaser s use without the expressed written permission of Electro Industries GaugeTech 2021 Electro Industries GaugeTech Nexus Shark CommunicatorPQA MeterManagerPQA EnergyPQA com and EnergyPQA are registered trademarks of Electro Industries GaugeTech V Sw...

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Page 5: ...ntinuing immediately following thereafter for a period of four 4 consecutive years that the Product will be free from defects in material and workmanship and except for the foregoing the Product is sold AS IS with all faults This warranty does not apply to defects resulting from unautho rized modification misuse or use of the Product for any use other than electrical power monitoring which is the ...

Page 6: ...ivities or e the Customer failed to pay Electro the Product s pur chase price pursuant the Terms of Sale published by Electro at https www elec troind com pdf docs electro terms of sale pdf 4 DISCLAIMER OF WARRANTY AND LIMITATIONS OF LIABILTY EXCEPT AS EXPRESSLY GIVEN IN THIS LIMITED WARRANTY SECTION ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING WITHOUT LIMITATION ANY ...

Page 7: ...HALL NOT EXCEED CUSTOMER S PURCHASE PRICE FOR THE PRODUCT PAID BY THE CUSTOMER FOR THE PRODUCT WHICH GAVE RISE TO SUCH CLAIM IRRESPECTIVE OF THE NATURE OF THE CLAIM WHETHER IN CONTRACT TORT WARRANTY OR OTH ERWISE ELECTRO SHALL NOT BE LIABLE FOR AND THE CUSTOMER SHALL INDEM NIFY DEFEND AND HOLD ELECTRO HARMLESS FROM THE FOLLOWING ANY CLAIMS BASED ON ELECTRO S COMPLIANCE WITH END USER S OR CUSTOMER ...

Page 8: ...s is to be used for alarm or secondary protection only Statement of Calibration Our instruments are inspected and tested in accordance with specifications published by Electro Industries GaugeTech The accuracy and a calibration of our instruments are traceable to the National Institute of Standards and Technology through equip ment that is calibrated at planned intervals by comparison to certified...

Page 9: ...ranchement du compteur The following safety symbols may be used on the meter itself Les symboles de sécurité suivante peuvent être utilisés sur le compteur même This symbol alerts you to the presence of high voltage which can cause dangerous electrical shock Ce symbole vous indique la présence d une haute tension qui peut provoquer une décharge électrique dangereuse This symbol indicates the field...

Page 10: ...r 50 years experience in the electrical industry EIG has developed extensive energy management and power quality expertise to help customers find ideal solutions to complex challenges Our corporate culture promotes being cutting edge and investing in R D to continually improve our customer experience Our solutions are designed to deliver results in days not years Known for our reputa tion as being...

Page 11: ...easurement 1 1 1 1 Three Phase System Configurations 1 1 1 1 1 Wye Connection 1 1 1 1 2 Delta Connection 1 4 1 1 3 Blondell s Theorem and Three Phase Measurement 1 6 1 2 Power Energy and Demand 1 8 1 3 Reactive Energy and Power Factor 1 12 1 4 Harmonic Distortion 1 14 1 5 Power Quality 1 17 2 Meter Overview 2 1 2 1 The Nexus 1262 1272 Multi parameter Revenue Meter 2 1 2 2 Accu MeasureTM Technology...

Page 12: ...72 Meter Logging Specifications 2 15 2 8 DNP3 Level 2 2 15 3 Operating Instructions 3 1 3 1 Nameplate Information 3 1 3 2 Basic Operation 3 4 3 3 LCD Display Information 3 6 3 3 1 Finding Your Display s Firmware Versions 3 9 3 4 Nexus 1262 1272 Programmable Display Navigation Map 3 10 3 5 Using the Display Configurator 3 11 3 6 Using the Base Programmable Display 3 28 3 6 1 Pre defined Display Scr...

Page 13: ... 3 RJ45 Connection Meter with INP200 10 100BaseT Option 5 7 5 3 4 Modem Ethernet Connection Meter with INP202 Combo Card Option 5 8 5 3 5 RS485 Connection Meter to the P40N P40N P41N P43N LED Display 5 8 5 3 6 Communication Ports on the I O Modules 5 10 5 3 7 RS485 Connection Meter to I O Modules 5 10 5 3 8 Steps to Determine Power Needed 5 13 5 3 9 Remote Communication Over Telephone LineCommunic...

Page 14: ...er Installation 6 6 6 2 1 Removing the Meter from the Switchboard Case Reinstalling the Meter into the Switchboard Case 6 14 6 3 Internal Battery Installation and Maintenance 6 21 6 3 1 Battery Safety and Disposal 6 23 6 4 Mounting the Optional External Displays 6 23 6 5 Mounting the Nexus External I O Modules 6 26 7 Time of Use Function 7 1 7 1 Introduction 7 1 7 2 The Nexus Meter s TOU Calendar ...

Page 15: ...wer Source for I O Modules 9 3 9 3 Using the PSIO with Multiple I O Modules 9 4 9 3 1 Steps for Attaching Multiple I O Modules 9 5 9 4 Factory Settings and Reset Button 9 7 9 5 Analog Transducer Signal Output Modules 9 8 9 5 1 Overview 9 8 9 5 2 Normal Mode 9 9 9 6 Analog Input Modules 9 10 9 6 1 Overview 9 10 9 6 2 Normal Mode 9 11 9 7 Digital Dry Contact Relay Output Form C Module 9 12 9 7 1 Ove...

Page 16: ... 10 4 10 2 Blade Configuration for Forms 9S 36S and 45S 10 5 10 3 Socket Meter Wiring Diagrams 10 6 10 4 9S Meter Mounted in S A Adapter 10 24 10 5 SWB3 Switchboard Meter Wiring Diagrams 10 25 11 Legacy Switchboard Meter non SWB3 11 1 11 1 Introduction 11 1 11 2 Labels 11 2 11 3 Specifications and Dimensions 11 3 11 4 Installation 11 6 11 5 Wiring Diagrams 11 8 11 6 E137370 Retrofit Panel S1 to M1...

Page 17: ...3 2 Theory of Operation 13 1 13 2 1 Summary 13 3 13 3 Flicker Setup 13 4 13 4 Flicker Polling Screen 13 5 13 5 Logging 13 9 13 6 Polling through a Communication Port 13 9 13 8 Performance Notes 13 10 A Transformer Loss Compensation Spreadsheet and Examples A 1 A 1 Calculating Values A 1 A 2 Excel Spreadsheet with Example Numbers A 1 Glossary GL 1 ...

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Page 19: ... connection Each connection has several different manifestations in actual use When attempting to determine the type of connection in use it is a good practice to follow the circuit back to the transformer that is serving the circuit It is often not possible to conclusively determine the correct circuit connection simply by counting the wires in the service or checking voltages Checking the transf...

Page 20: ...ts are also separated by 120o However unbalanced loads and other conditions can cause the currents to depart from the ideal 120o separation Three phase voltages and currents are usually represented with a phasor diagram A phasor diagram for the typical connected voltages and currents is shown in Figure 1 2 Figure 1 2 Phasor Diagram Showing Three phase Voltages and Currents N Phase 1 Phase 3 Phase ...

Page 21: ...any industrial applications the facility will be fed with a four wire wye service but only three wires will be run to individual loads The load is then often referred to as a delta connected load but the service to the facility is still a wye service it contains four wires if you trace the circuit back to its source usually a transformer In this type of connection the phase to ground voltage will ...

Page 22: ...Delta Winding Relationship In this example of a delta service three wires will transmit the power to the load In a true delta service the phase to ground voltage will usually not be balanced because the ground is not at the center of the delta Figure 1 4 shows the phasor relationships between voltage and current on a three phase delta circuit In many delta services one corner of the delta is groun...

Page 23: ...d for lighting loads In this connection the center point of one winding is grounded On a 120 240 volt four wire grounded delta service the phase to ground voltage would be 120 volts on two phases and 208 volts on the third phase Figure 1 5 shows the phasor diagram for the voltages in a three phase four wire delta system Figure 1 5 Phasor Diagram Showing Three phase Four Wire Delta Connected System...

Page 24: ...se value In older ana log meters this measurement was accomplished using up to three separate elements Each element combined the single phase voltage and current to produce a torque on the meter disk All three elements were arranged around the disk so that the disk was subjected to the combined torque of the three elements As a result the disk would turn at a higher speed and register power suppli...

Page 25: ...aneous sampling is the reduction of error introduced due to the difference in time when the samples were taken Figure 1 6 Three Phase Wye Load Illustrating Kirchhoff s Law and Blondell s Theorem Blondell s Theorem is a derivation that results from Kirchhoff s Law Kirchhoff s Law states that the sum of the currents into a node is zero Another way of stating the same thing is that the current into a...

Page 26: ...e time increment it is the integration of power over a defined time increment Energy is an important value because almost all electric bills are based in part on the amount of energy used Typically electrical energy is measured in units of kilowatt hours kWh A kilowatt hour represents a constant load of one thousand watts one kilowatt for one hour Stated another way if the power delivered instanta...

Page 27: ...oad is constant over that minute we can convert the power reading to an equivalent consumed energy reading by multiplying the power reading times 1 60 converting the time base from minutes to hours Figure 1 7 Power Use over Time 0 10 20 30 40 50 60 70 80 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Time minutes s t t a w o l i k ...

Page 28: ...e 1 7 and adjust the energy reading to an hourly value that constitutes the demand In the example the accumulated energy is 14 92 kWh But this measurement was made over a 15 minute interval To convert the reading to a demand value it must be normalized to a 60 minute interval If the pattern were repeated for an additional three 15 minute intervals the total energy would be four times the measured ...

Page 29: ...during two intervals the energy rises sharply and peaks at 100 kWh in interval number 7 This peak of usage will result in setting a high demand reading For each interval shown the demand value would be four times the indicated energy reading So interval 1 would have an associated demand of 240 kWh hr Interval 7 will have a demand value of 400 kWh hr In the data shown this is the peak demand value ...

Page 30: ...he value of corresponding current that is directly in phase with the voltage However in actual practice the total current is almost never in phase with the voltage Since the current is not in phase with the voltage it is necessary to consider both the inphase component and the component that is at quadrature angularly rotated 90o or perpendicular to the voltage Figure 1 9 shows a single phase volt...

Page 31: ...wo different ways The more common method of calculating power factor is the ratio of the real power to the apparent power This relationship is expressed in the following formula Total PF real power apparent power watts VA This formula calculates a power factor quantity known as Total Power Factor It is called Total PF because it is based on the ratios of the power delivered The delivered power qua...

Page 32: ... non linear loads Devices such as computer power supplies variable speed drives and fluorescent light ballasts make current demands that do not match the sinusoidal waveform of AC electricity As a result the current waveform feeding these loads is periodic but not sinusoidal Figure 1 10 shows a normal sinusoidal current waveform This example has no distortion Figure 1 10 Nondistorted Current Wavef...

Page 33: ...uency This modeling is performed by mathematically disassembling the distorted waveform into a collection of higher frequency waveforms These higher frequency waveforms are referred to as harmonics Figure 1 12 shows the content of the harmonic frequencies that make up the distortion portion of the waveform in Figure 1 11 Figure 1 12 Waveforms of the Harmonics 1000 500 0 500 1000 t s p m a t n e r ...

Page 34: ...th and 9th However newer new linear loads are introducing significant quantities of higher order harmonics Since much voltage monitoring and almost all current monitoring is performed using instrument transformers the higher order harmonics are often not visible Instrument transformers are designed to pass 60 Hz quantities with high accuracy These devices when designed for accuracy at low frequenc...

Page 35: ...ture is a real time data collection event Waveform capture should not be confused with waveform recording that is used to record multiple cycles of all voltage and current waveforms in response to a transient condition 1 5 Power Quality Power quality can mean several different things The terms power quality and power quality problem have been applied to all types of conditions A simple defini tion...

Page 36: ...wise to consult a power quality professional for assistance in defining the cause and possible solutions to the problem Cause Disturbance Type Source Impulse transient Transient voltage disturbance sub cycle duration Lightning Electrostatic discharge Load switching Capacitor switching Oscillatory transient with decay Transient voltage sub cycle duration Line cable switching Capacitor switching Loa...

Page 37: ...re sampled and RMS values calculated continuously every cycle Values of Voltage current and power are produced every three cycles and every second Figure 2 1 illustrates the key processes operating within the Nexus 1262 1272 meter The meter allows for four types of inputs and can provide outputs to an integrated display pulse outputs and several communication ports Nexus 1262 1272 Meter Processing...

Page 38: ...put port that accepts an industry standard IRIG B signal to synchronize meter time to standard universal time If there is no IRIG B signal the meter uses an internal 20 ppm crystal or the primary power line frequency to keep meter time The Line Frequency Clock Synchronization feature may be enabled or disabled If it is not enabled the internal clock crystal provides time synchronization All readin...

Page 39: ...metering applications Additionally any one input channel can be selected to accept an End of Interval pulse from another meter Meter set up parameters and all historical log data are stored in nonvolatile RAM The user has multiple log functionality Data is made available through the onboard display Display screens are described in Chapter 3 Several additional communication channels operate simulta...

Page 40: ...ped maximum and minimum readings Time of Use The Nexus meter s Time of Use functionality offers the following standard capabilities 8 TOU schedules Bidirectional consumption and Demand 4 seasons year 20 year calendar Prior month and prior season readings for each schedule Present month and present season readings for each schedule Prior season may also be adjusted for a programmable freeze period ...

Page 41: ...ling Window Demand Thermal Demand Predictive Demand Interval length from 1 second to over one hour Up to 15 sub intervals End of Interval Pulse Output with optional 4IPO Internal KYZ capability End of Interval Pulse Input Time Stamped Max Min Demands The unit gathers Time stamped Max Min Demands for all power values Each of the following values is date time stamped kW Demand Delivered Received Max...

Page 42: ...s a direct digital link allowing selected data to be gathered without affecting the meter or your data All of the advanced features of the 1262 1272 are made available through industry standard Modbus and DNP3 protocols No proprietary or closed protocols are used Standard Communications ANSI Type 2 Optical port 2 RS485 serial ports Modbus RTU ASCII protocol DNP3 Level 2 protocol Speeds up to 11520...

Page 43: ...utputs which can be programmed to pulse for any accumulated reading One of the pulse outputs can also be set for an End of Interval Sync Pulse Upgradeable External I O The user can select from the following to connect multiple external I O Modules for enhanced I O capability Analog Outputs Analog Inputs Additional Status Inputs KYZ Outputs Relay Alarm Outputs Control Options ElectroLogicTM Relay C...

Page 44: ...re information The Infrared Test Pulse can be set to pulse for Watt hour Watt hour VAR hour VAR hour and VA hour The pulse uses time modulation which allows the pulse to be accurate during short duration pulse tests The pulse integration uses industry accepted reference standards The Mode Switch magnetic reed switch uses a magnet to switch operating modes The Test button is used to access Test Mod...

Page 45: ...f EIG s new SWB3 The SWB3 is a superior direct replace ment to the General Electric style relay case mounted meters The dimensions of the SWB3 are identical to the S1 relay case Other features of the SWB3 are A draw out meter cradle for easy testing and replacement Easy remove hinged paddle for simple installation NEMA 4X rated cover for outdoor substation control panels One button cover release f...

Page 46: ...s 2 1 A nominal burden 0 000312 VA 2 5 A Class 10 20 5 A nominal burden 0 0125 VA 25 A 0 1 of nominal pick up current 120 over range of Meter Class Current surge withstand at 23 o C 100 A for 10 seconds 300 A for 3 seconds 500 A for 1 second The current inputs are only to be connected to external current transformers Table 2 Nexus 1262 1272 Meter Accuracy Value Accuracy Voltage 0 02 Current 0 05 F...

Page 47: ... inputs Externally powered units Options SE DE 480 V max Phase to Reference Va Vb Vc to VRef burden 0 33 VA 576 V 600 V max between Va Vb Vc inputs Input Impedance 1 Mohm phase 20 over range of rated Voltage 2 V pickup Voltage External Power Supply Options Nominal Ratings Standard external Option SE 102 to 270 V AC DC 50 60 Hz 12 VA max Low Voltage external Option DE 18 to 60 V DC Burden 9 W max S...

Page 48: ...Speeds of up to 115200 bps Optional Communications INP200 Internal 10 100BaseT Ethernet with Total Web Solutions INP202 Ethernet Modem Combo card Modbus TCP and DNP LAN WAN Internal 8 Channel Digital Inputs Type Self excited for dry contacts only Wetting Voltage 12 V DC typical Internal 4 Channel KYZ Outputs Type Form C contacts pulse or transition based counts On Resistance 23 35 Peak Voltage 350...

Page 49: ...0 to 60 C Humidity 95 non condensing Storage Temperature 40 to 85 C Raintight Lexan Cover Outdoor Rated Socket meter NOTE At temperatures above 60 C the display may turn black The display should return to normal once the temperature has cooled If the meter is exhibiting a heating issue that causes the display to turn black try shielding the meter from direct sunlight or otherwise provide some cool...

Page 50: ... lbs 4 54 kg Switchboard Meter SWB3 Size 16 W x 14 D x 10 1 2 H 40 64 cm x 35 56 cm x 26 67 cm Weight 16 lbs 7 25 kg Legacy Switchboard Meter Size 16 W x 14 D x 11 H 40 64 cm x 35 56 cm x 28 cm Weight 16 lbs 7 25 kg Compliance ANSI C12 20 0 2 Accuracy Class and C12 1 IEC 62053 22 2003 0 2S IEC 60687 IEC 62053 22 and IEC 62053 23 0 2 KEMA Labs Ceritifed IEC 62052 11 2003 General Requirements Mechan...

Page 51: ...omizable DNP Point Map Up to 16 Relays and 8 Resets can be controlled through DNP Level 2 Report by Exception Processing DNP Events Deadbands can be set on a per point basis Available Freeze commands are Freeze Freeze No Ack Freeze with Time and Freeze with Time No Ack Freeze with Time commands enable the Nexus meter to have internal time driven Frozen and Frozen Event data When the meter receives...

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Page 69: ... Display screen label fields Item entry fields click here to enter the Register containing Modbus the item The information for these fields comes from the meter s Modbus Register Map This is where you can specify a multiplier for your data These fields let you specify Scaling and data display Display screen label fields Timestamp Status field does not display on the LCD screen Demand field See scr...

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Page 79: ...programming the Device Display Programmable Settings Screen 8VH XWWRQV DV GHVFULEHG EHORZ Update Display OLFN WR VHQG WKH QHZ VHWWLQJV WR WKH GLVSOD IWHU VHWWLQJV KDYH EHHQ XSGDWHG 9LHZ 0RGH LV GLVSOD HG Retrieve from Display OLFN WR UHWULHYH H LVWLQJ VHWWLQJV Cancel OLFN WR UHWXUQ WR WKH RPPXQLFDWRUPQA 0DLQ VFUHHQ ZLWKRXW XSGDWLQJ RU VDYLQJ QHZ VHWWLQJV Save OLFN WR VDYH QHZ VHWWLQJV WR D ILOH KH...

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Page 87: ... is available from the Edison Electric Institute 701 Pennsylvania Avenue N W Wash ington D C 20004 2696 Les informations contenues dans ce chapitre sont destinées à assister au personnel de relevé qualifié Il n est pas destiné à remplacer la formation approfondie nécessaire pour installer ou retirer les compteurs de leur fonction Toute intervention sur ou à proximité de compteurs sous tension socl...

Page 88: ...rtion of the meter face as shown in Figure 4 1 The Test Pulse LED continuously emits calibration pulses infra red light This LED can be used for a variety of pulses including individual quadrants for Watt hour VA hour VAR hour and Watt Demand pulses Each calibration pulse is equal to the value assigned to Kt Watt hours per pulse in the meter s Device Profile The millisecond duration of each output...

Page 89: ...ion 4 2 2 for more detail The LCD display also includes three phase Voltage indicators These indicators are labeled A B and C to represent the presence of Voltage on the labeled phase If Voltage is not present on one phase its indicator is not displayed These indicators also show whether current is flowing on the phase If no current is flowing on a phase the indicator blinks when current is flowin...

Page 90: ... data is displayed as Wh VARh VAh and watts rather than kWh kVARh kVAh and kW The same Demand values calculated during normal operation are also calculated in Test Mode The display formats in Test Mode are changed to provide greater resolution during test operations The display does not scroll while in Test Mode Each item remains displayed until the Test Button is pressed which causes the next Tes...

Page 91: ...n be completed by proper test design To test strictly VAR hours limit the test parameters to one quadrant during testing In the event of a power outage data for Test Mode Energy Demand and Power Factor is not saved Upon power up the meter returns to Normal Mode The test data is lost and all registers are restored to their pretest values While in Test Mode the IR Port and Communications Port 1 are ...

Page 92: ...ter Testing Electro Industries GaugeTech Powered by Innovation 2 When replacing an old meter that has accumulations with a new meter that has no accumulations the New Value field can be set to the value of the existing accumu lations ...

Page 93: ...et Accumulators You will see the screen shown below 2 Click Tabs at the top of the screens to access the individual screens Each screen has a Current Value New Value and Preset Box for each accumula tor A new meter has zeros for Current Values 3 Settings can be preset for the following sets of values Primary Energy Secondary Energy Primary Energy Quadrants Secondary Energy Quadrants Internal Input...

Page 94: ...Z Output Accumulators Q Hours I V Squared T Accumulators Cumulative Demand Secondary Uncompensated Energy Examples of some of the screens are shown below 4 Click the Preset Boxes for the values you want to set 5 Click Set to save your entries or Cancel to exit the screen without saving any changes ...

Page 95: ...ther the meter sees measurable load If the meter does not recognize measurable load The meter watches for user interaction by monitoring activity on the Test Button and the Reset Button If neither button is pushed within the programmed Exit Delay time the meter exits Test Mode and returns to Normal Mode Each time the Test or Reset Button is pressed the meter starts the Exit Delay Timer again The E...

Page 96: ...zed with the hourly boundary Maximum Demand values for each Demand integration type are not modified while in Test Mode The previously recorded maximums are restored when you exit Test Mode If you choose to reset Demand data during testing operations you can complete this action when you exit Test Mode by pressing the Reset Button after the meter returns to Normal Mode NOTE Normal billing and hist...

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Page 98: ......

Page 99: ...unication allows multiple meters to communicate with another device at a local or remote site The I O modules and external displays use RS485 to communi cate with the meter All RS485 links are viable for up to 4000 feet 1220 m The Nexus Socket meter s Ports 1 and 4 are two wire RS485 connections up to 115200 baud Optional Communication Connections for INP200 10 100BaseT connection or INP202 Combin...

Page 100: ... the Nexus 1262 1272 meter to communicate with one other device e g a PC Located on the left side of the meter s face it provides communica tion with the meter through an ANSI C12 13 Type II Magnetic Optical Communi cations Coupler such as the B10U Optical Probe which connects to the USB port of the PC NOTE You can order this device from EIG s webstore https www electroind com product b10u ansi op...

Page 101: ...ech Documents USB Driver When you download the driver file you will see a file that has installation instructions Note that the Nexus 1500 meter s optical port offers the standard inverted mode for communication but can also be programmed in non inverted mode using the CommunicatorPQA software Refer to Chapter 11 in the CommunicatorPQA MeterManagerPQA and EnergyPQA com Software User Manual for ins...

Page 102: ...ll interfere with communication Two wire RS485 communication terminals Connect the terminal of the meter port to the terminal of the device Connect the terminal of the meter port to the terminal of the device NOTES on RS485 Connections Use a shielded twisted pair cable 22 AWG 0 33 mm2 or larger grounding the shield at one end only Establish point to point configurations for each device on a RS485 ...

Page 103: ...ctions with a utility knife Please refer to the Cable Color Key on pages 6 5 to 6 7 if you are using pigtails or if you have any question about which connector is which Termination Resistors RT are generally used on both ends of longer length trans mission lines The value of the Termination Resistors is determined by the electrical parameters of the cable Termination Resistors are only needed with...

Page 104: ... cations Products category from the left side of the webpage Figure 5 7 illustrates the Unicom 2500 connections for RS485 Twisted pair shielded SH cable SH SH SH Slave device 1 Slave device 2 Last Slave device N Master device Earth Connection preferably at single location Twisted pair shielded SH cable Twisted pair shielded SH cable Twisted pair shielded SH cable SH Twisted pair shielded SH cable ...

Page 105: ...ake the terminal and connect the RX and TX terminals with a jumper wire to make the terminal See the figure on the right for the Unicom 2500 s set tings The Unicom s Baud rate must match the Baud rate of the meter s RS485 port you set the Baud rate by turning the screw to point at the rate you want 5 3 3 RJ45 Connection Meter with INP200 10 100BaseT Option The INP200 Option conforms to the IEEE 80...

Page 106: ...rotocol supported by the modem is Modbus ASCII The Communication protocol supported by the RS485 Ethernet Modem Gateway is Modbus RTU INP202 converts all incoming modem Modbus ASCII requests to Modbus RTU for internal and gateway communication It then converts all response Modbus RTU messages into Modbus ASCII protocol before it sends the responses to the modem Some of the fixed parameters for the...

Page 107: ...e potential as the source It is not an earth ground connection You may also connect the shield to earth ground at one point 2 Provide termination resistors at each end for longer runs typically 500 or more connected to the and lines RT is approximately 120 Ohms NOTE The P40N and legacy P40N connect the same way through the port on the back of the display The only difference is in the port labeling...

Page 108: ...figuration varies depending on type of module For more detail refer to Chapter 10 5 3 7 RS485 Connection Meter to I O Modules An RS485 cable harness is supplied with the purchase of MBIO mounting brackets Wire one end of the cable to the meter s Port 4 Insert the other end of the cable into the communication pins of the I O module s male RS485 side port see Figure 5 9 See Section 10 3 1 for detail...

Page 109: ...shield to the shield S terminal The S terminal on the meter is used to reference the meter s port to the same potential as the source It is not an earth ground connection You may also connect the shield to earth ground at one point 2 Provide termination resistors at each end for longer runs typically more than 500 connected to the and lines RT is approximately 120 Ohms NOTES The meter has some lev...

Page 110: ...51701 5 12 5 Serial Communication Wiring Electro Industries GaugeTech Powered by Innovation Figure 5 10 Meter and I O Module Connections G S RT 120 Ohms RT 120 Ohms Meter s Port 4 Male Side Port on I O Module ...

Page 111: ...Ratings for the I O modules 2 Add together the VA Ratings for the I O modules in use to determine total power needed 3 Each PSIO supplies 12 VA 12 V DC For details on the PSIO see sections 10 2 1 and 10 3 I O Module Factory Settings and VA Ratings Model Module Address VA Rating 1mAON4 0 1 mA 4 Analog Outputs 128 2 7 VA 1mAON8 0 1 mA 8 Analog Outputs 128 3 2 VA 20mAON4 4 20 mA 4 Analog Outputs 132 ...

Page 112: ...up to 4000 feet 1219 meters Use CommunicatorPQA software to set the port s baud rate to the appropriate speed for your hardware and or network and enable Modbus ASCII protocol See the CommunicatorPQA MeterManagerPQA and EnergyPQA com Software User Manual instructions Remember Modbus RTU will not function properly with modem communication You must change the protocol to Modbus ASCII You must use an...

Page 113: ...rings NOTE Use a Modem Manager The product was designed to make this task plug and play We highly recommend it for all serial modem solutions Modem Connected to a Computer the Originate Modem Restore modem to factory settings This erases all previously programmed settings Set modem to display Result Codes The computer will use the result codes Set modem to Verbal Result Codes The computer will use...

Page 114: ... Strings 5 3 12 High Speed Inputs Connection The Nexus 1262 1272 meter s built in High Speed Inputs can be used in two ways Attaching status contacts from relays breakers or other devices for status or wave form initiation Attaching the KYZ pulse outputs from other meters for pulse counting and totalizing Even though these inputs are capable of being used as high speed digital fault record ing inp...

Page 115: ...tion 5 3 13 IRIG B Connections IRIG B is a standard time code format that synchronizes event time stamping to within 1 millisecond An IRIG B signal generating device connected to the GPS satellite system synchronizes Nexus 1262 1272 meters located at different geographic locations Nexus meters use an un modulated signal from a satellite controlled clock such as Arbiter 1093B For details on install...

Page 116: ...ngs Select AutoDST or Enable and set dates c Click Update Device Profile to save the new settings See Chapter 4 of the CommunicatorPQA MeterManagerPQA and EnergyPQA com Software User Manual for details 2 Before connection check that the date on the meter clock is correct or within 2 Months of the actual date This provides the right year for the clock GPS does not supply the year 3 Connect the term...

Page 117: ...oting Tip The most common source of problems is a reversal of the two wires If you have a problem try reversing the wires Figure 5 13 IRIG B Communication NOTE Please make sure that the selected clock can drive the amount of wired loads IRIG B Port IRIG B Time Signal Generating Device GPS Satellite Connection ...

Page 118: ...d or disabled for use instead of IRIG B If Line Frequency Clock Synchronization is enabled and power is lost the internal clock takes over at the precise moment power is lost Internal Clock Crystal All Nexus meters are equipped with internal clocks crystals which are accurate to 20ppm and which can be used if IRIG B is not connected and or Line Frequency Clock Synchronization is not enabled DNP Ti...

Page 119: ... option which does not offer Total Web Solutions 5 4 1 Hardware Overview A Nexus 1262 1272 meter with the 10 100BaseT Ethernet Option INP200 has all the components of the standard Nexus meter plus the capability of connection to a network through an Ethernet LAN or through the Internet via Modbus TCP DNP3 WAN LAN HTTP SMTP FTP and or DHCP The Internal Network Option of the Nexus meter is an extrem...

Page 120: ... An RS232 RS485 converter may be required e g Electro Industries Unicom 2500 2 Double click on CommunicatorPQA Software to open it 3 Click the Quick Connect or Connection Manager icon in the icon tool bar 4 Click the Serial Port button Make sure data matches the meter then click Connect Set the Network using the following steps 1 From the Device Profile menu click General Settings Communications a...

Page 121: ... Innovation 2 You will see the Device Profile Communications Settings screen In the Network Settings section middle of the screen enter the following data provided by your Systems Administrator IP Address 10 0 0 1 Example Subnet Mask 255 255 255 0 Example Default Gateway 0 0 0 0 Example ...

Page 122: ...The first tab is Services Security shown above Click the options to enable them for the Network option e g to enable the Web server click the box next to that option d Click any of the other tabs to configure more options see Chapter 21 in the CommunicatorPQA MeterManagerPQA and EnergyPQA com Software User Manual for detailed instructions FTP Client configure the FTP server settings GE Protocol EG...

Page 123: ...ork using a Device Address of 1 and the assigned IP Address Follow these steps 1 Double click on the CommunicatorPQA icon to open the software 2 Click the Connect icon in the icon tool bar 3 You will see the Connect screen Click the Network button at the top of the screen The screen will change to one requesting the following information Device Address 1 Host IP Address per your network administra...

Page 124: ...ew The Nexus 1262 1272 meter with the INP202 Option has all the components of an INP200 Nexus meter plus a built in modem It has the capability of connecting to a network through an Ethernet LAN and with other devices via modem 5 5 2 Hardware Connection There are three cables to connect for the INP202 Option An RS485 Gateway cable an RJ45 Ethernet cable and an RJ11 Modem cable are inserted into th...

Page 125: ...Example Computer Name NETWORK Example After the Network parameters are set CommunicatorPQA software connects to the meter via the Network using a Device Address of 1 and the assigned IP Address Follow these steps 1 Double click on the CommunicatorPQA icon to open the software 2 Click the Connect icon in the icon tool bar 3 You will see the Connect screen Click the Network button at the top of the ...

Page 126: ...phone Network The phone jack is the over ride of the modem function when the phone is in use the modem operates at up to 56k baud 5 6 Factory Settings You can use CommunicatorPQA software to connect to a meter with the INP200 INP202 option for the first time or at any time until the settings are changed using the following factory settings Device Address 1 IP Address 10 0 0 1 Network Port 502 Prot...

Page 127: ...ndard meter socket Follow the Installation Summary below or follow the installation instructions on the meter socket to ensure that the unit is installed securely See dimension figures below and on the following pages Figure 6 1 Socket Meter Mounting Dimensions Installation Summary Examine the labels to verify that the meter you are installing is in fact the correct form factor and service type Ma...

Page 128: ...rnal Shroud and place the battery into the battery compartment with the facing UP Replace the Internal Shroud See Section 6 2 To install the Modem Battery with the Outer Shroud on the meter locate the battery cable at the back of the meter and insert the cable connector into the cable Use the velcro peel and stick to attach the battery somewhere outside of the meter Measure the enclosure to make s...

Page 129: ...edures for the Nexus P40N P40N P41N P43N displays The displays are connected to the meter via the RS485 cable supplied with the 1262 1272 see Figure 6 2 below See Chapter 5 for detailed wiring instructions Figure 6 2 Socket Meter Rear View Showing Cables Cable 8 Optional Aux Power Cable 1 Port 1 Port 4 IRIG B Cable 2 to High Speed Inputs Optional Communication Cables Modem Ethernet Combo Cable 5 R...

Page 130: ...Hardware Installation Electro Industries GaugeTech Powered by Innovation Figure 6 3 Socket Meter Mounted in A Base Front View 6 84 17 37cm 10 4 26 42cm 0 87 2 21cm IA High IB High IC High IC Low IB Low IA Low Va Vb Vc Vn ...

Page 131: ...Doc E151701 6 5 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation Figure 6 4 Socket Meter in A Base Side View 4 57 11 61cm 6 60 16 76cm 2 02 5 13cm ...

Page 132: ... 1 Cable Color Key Cable Signal Name Color Cable 1 Port 1 Wiring RS485 SHIELD Black Tx Rx Brown Tx Rx Red Port 4 Wiring RS485 SHIELD Orange Tx Rx Yellow Tx Rx Green IRIG B Blue Purple Cable 2 High Speed Inputs Input 8 Black Input 7 Brown Input 6 Red Input 5 Orange Input 4 Yellow Input 3 Green Input 2 Blue Input 1 Gray Common Purple ...

Page 133: ...en Normally Closed 3 Blue Common Purple Normally Open 3 Gray Normally Closed 4 Light Green Common Pink Normally Open 4 White Cable 4 RS485 SHIELD Blue Tx Rx Green Tx Rx Red Cable 5 RJ11 Modem Label Attached Blue Cable 6 RJ45 Ethernet Label Attached Blue Cable 7 Battery Label Attached Black Cable 8 Aux Power DE Positive Red Neutral Negative Black Aux Power SE Std Ext Black Std Ext Black Table 1 Cab...

Page 134: ... 6 8 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation The following figures show the switchboard case meter dimensions Figure 6 5 Switchboard Case Meter Front Dimensions SWB3 LQ FP LQ FP ...

Page 135: ...Doc E151701 6 9 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation Figure 6 6 Switchboard Meter Side Dimensions SWB3 LQ FP LQ FP LQ FP LQ FP LQ FP ...

Page 136: ...Doc E151701 6 10 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation Figure 6 7 Switchboard Case Back Dimensions SWB3 LQ FP LQ FP LQ FP LQ FP LQ FP ...

Page 137: ...ter should fit in the same cutout See the figure on the next page Tools needed are a 2 Phillips screwdriver and an 11 32 nut driver For new installations see page 13 If you want to remove the meter from the switchboard case before installing the case see 6 2 1 Removing the Meter from the Switchboard Case Reinstalling the Meter into the Switchboard Case on page 6 14 for instructions LQ FP LQ FP LQ ...

Page 138: ... 4 SCREWS HOLDING CASE TO PANEL EIG CASE 3 INSERT AND INSTALL SHARK 270 SWB3 UNIT INTO PANEL CUT OUT USING INCLUDED MOUNTING CLIPS REST METER ON CUTOUT WHILE MOUNTING 4 INSERT MOUNTING CLIPS INTO SIDE SLOTS TOOLS NEEDED 2 PHILIPS SCREWDRIVER IMPORTANT Please note that the mounting hole locations are different from the GE S1 case For quick retrofit use the four mounting brackets to firmly secure th...

Page 139: ... the accessories bag to attach the meter to the panel as shown in the figure below Figure 6 10 Switchboard Case Installation for New Installations NOTE Alternatively you can use the mounting brackets for new installations see the instructions on the previous page 1 USING INCLUDED WASHER AND STUDS SCREW STUDS INTO ALL FOUR LOCATIONS 3 INSTALL FLAT WASHER SPLIT WASHER AND NUT FROM BAG ...

Page 140: ...lling the Meter into the Switchboard Case You may want to remove the meter from the switchboard case for calibnration or maintenance tasks Follow these instructions 1 Lift the latch and remove the front bezel Figure 6 11 Removing the Front Bezel 2 Pull out the paddle board Figure 6 12 Removing the Paddle Board Press and Lift up Latch Remove the Bezel ...

Page 141: ...oc E151701 6 15 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation 3 Move the top lever to the right a and move the bottom lever to the left b Figure 6 13 Unlocking the Cradle a b ...

Page 142: ... Installation Electro Industries GaugeTech Powered by Innovation 4 Holding onto the meter gently pull the meter cradle toward you You can use the top lever to pull the cradle all the way out Figure 6 14 Removing the Meter Cradle ...

Page 143: ...Powered by Innovation 5 Put the cradle with the meter in a safe location To re install the meter in the switchboard case 1 Make sure the top lever is in the open position and use it to reinsert the cradle into the switchboard case Figure 6 15 Reinserting the Meter Cradle ...

Page 144: ...re Installation Electro Industries GaugeTech Powered by Innovation 2 Lock the meter cradle into the switchboard case by moving the upper lever to the left a and the lower lever to the right b Figure 6 16 Locking the Cradle a b ...

Page 145: ...dle board between the bottom of the cradle and the switchboard case and continue to push the paddle board inward until it is fully installed Note that some effort will be needed to fully install the paddle board Figure 6 17 Reinserting the Paddle Board Inserting the Paddle Board Paddle Board Completely Installed ...

Page 146: ...e inside of the upper lip there are two self locating tabs that will guide the bezel into its proper position Once the bezel hangs freely push the bottom of the bezel firmly against the case and then press the latch until it snaps into place Figure 6 18 Reinstalling the Bezel Self locating tabs inside Latch snaps into place ...

Page 147: ...with 3 V Lithium cell BR2032 Meters shipped after February 2010 are equipped with 3 V Lithium cell Panasonic BR3032 Examine the specific meter and be sure to install the correct battery Figure 6 20 Meter without Internal Shroud The Internal battery maintains NVRAM and time during outages It is located on one of the vertical panels inside the Internal Shroud see Figure 6 5 Under normal conditions t...

Page 148: ...er and the internal shroud If the meter is in a switchboard case lift the locking latch and remove the switchboard case s front bezel If the meter was in a socket form remove the outer clear cover by rotating it counter clockwise 4 Remove the old battery with a screwdriver or similar tool 5 Place the new battery in the battery holder IMPORTANT You must insert the replacement battery into the holde...

Page 149: ...er up the meter 6 Reset meter time using CommunicatorPQA software unless IRIG B is connected If IRIG B is connected time is synchronized automatically 6 3 1 Battery Safety and Disposal Dispose of batteries in accordance with local state and federal hazardous waste regulations For disposal outside the United States follow your country s disposal guidelines 6 4 Mounting the Optional External Display...

Page 150: ...6 24 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation The display is powered by an external power source such as the PSIO which supplies 12 V DC Figure 6 22 P40N Front and Side Dimensions ...

Page 151: ...Doc E151701 6 25 6 Hardware Installation Electro Industries GaugeTech Powered by Innovation Figure 6 23 P40N ANSI Mounting 4x 0 20 0 51 cm 3 38 8 57 cm 3 38 8 57 cm 1 69 4 29 cm 04 00 10 16 cm ...

Page 152: ...to the next using a flathead screwdriver Work from left to right Secure the mounting brackets to both ends of a group of I O modules or both sides of an individual module using the screws supplied 440 pan head screws Next secure the brackets to a flat surface using a 8 screw with a lock washer Figure 6 24 I O Modules Mounting Diagram Overhead View Mounting Bracket Mounting Bracket 5 63 14 30 cm 4 ...

Page 153: ... Output Figure 6 26 shows mounting with the PSIO Figure 6 26 I O Modules Mounting Dimensions Front View Mounting Brackets MBIO Male RS485 Side Port Female RS485 Side Port I O Port Size and Pin Configuration Vary DANGER On L Power Supply PSIO Max Power 12 VA Input Voltage 12 60V DC www electroind com Output Voltage 12V DC ElectroIndustries GaugeTech 90 240V AC DC N Power In Mounting Bracket 6 88 13...

Page 154: ...igure 6 27 I O Modules with PSIO Power Supply Refer to Figure 6 28 and Section 5 3 8 for PSIO and I O Module wiring instructions Figure 6 28 I O Module Wiring Detail 1 73 4 40 cm 072 072 3HIELD Auxiliary Power PSIO is supplied through pins 3 and 4 Connection though SHIELD and to meter s Port 4 ...

Page 155: ...cumulation You may store up to twenty calendars in the Nexus Meter and an unlimited amount of calendar files on your computer The TOU calendar profile allows you to assign a programmable usage schedule eg Weekday Weekend Holiday to each day of the calendar year You may create up to 16 different TOU schedules Each TOU schedule divides the 24 hour day into fifteen minute intervals from 00 00 00 to 2...

Page 156: ...lendars CommunicatorPQA software retrieves TOU calendars from the Nexus meter or from the computer s hard drive for review and edit Up to a maximum of twenty yearly calendars can be stored in the Nexus meter at any given time You may retrieve them one at a time a new calendar can be stored while a current calendar is in use Accumulations do not stop during calendar updates If a calendar is replace...

Page 157: ...ngs Time you must enable it in the Nexus meter s Device Profile Time Settings Click Auto DST which sets Daylight Savings Time automatically for the United States ONLY You can also select User Defined and enter the desired dates for Daylight Savings Time See Chapter 4 in the CommunicatorPQA Meter ManagerPQA and EnergyPQA com Software User Manual for details To set Demand Intervals from the Device P...

Page 158: ...Doc E151701 7 4 7 Time of Use Function Electro Industries GaugeTech Powered by Innovation This page intentionally left blank ...

Page 159: ...hen meters are connected on the low Voltage side of power trans formers when the actual ownership change occurs on the high side of the trans former This condition is illustrated in Figure 8 1 Figure 8 1 Low Voltage Metering Installation Requiring Loss Compensation It is generally less expensive to install metering equipment on the low Voltage side of a transformer and in some conditions other lim...

Page 160: ...e computational corrections used for transformer and transmission line loss com pensation are similar In both cases no load losses and full load losses are evaluated and a correction factor for each loss level is calculated However the calculation of the correction factors that must be programmed into the meter differ for the two dif ferent applications For this reason the two methodologies will b...

Page 161: ...00 kW and losses are equal to 20kW then the total metered value with loss compensation would be 2020 kW for these same settings if the meter measured 2000 kW of delivered power the total metered value with loss compensation would be 1980 kW Since transformer loss compensation is the more common loss compensation method the meter has been designed for this application Line loss compensation is calc...

Page 162: ...are derived by figuring the values from the worksheet shown here and in Appendix B of the Com municatorPQA MeterManagerPQA and EnergyPQA com Software User Manual You enter the derived values into the CommunicatorPQA software through the Device Profile Transformer and Line Loss Compensation screen The CommunicatorPQA software allows you to enable transformer loss compensa tion for losses due to cop...

Page 163: ...Impedance The transformer MVA rating is generally the lowest MVA rating the self cooled or OA rating of the transformer winding The test Voltage is generally the nominal Voltage of the secondary or low Voltage winding For three phase transformers these values will typically be the three phase rating and the phase to phase Voltage All of the test measurements are based on these two numbers Part of ...

Page 164: ...ers to three element metering installations As a result we know that Number of metering elements 3 Meter base Voltage 120 Volts Meter base current 5 Amps 8 2 1 1 Three Element Loss Compensation Worksheet Transformer Data from Transformer Manufacturer s Test Sheet Table 1 Company Station Name Date Trf Bank No Trf Manf Trf Serial No Calculation by Table 2 Winding Voltage MVA Connection HV High Y XV ...

Page 165: ...nvert 1 Phase Self Cooled MVA to 1 Phase kVA by multiplying by 1000 Test Voltage is generally Phase to Phase for three phase transformers Calculate Phase to Neutral Voltage by dividing Phase to Phase Voltage by the square root of 3 Calculate Full Load Current by dividing the 1 Phase kW Self Cooled Rating by the Phase to Neutral Voltage and multiplying by 1000 Table 3 Value Watts Loss 3 Phase 1 Pha...

Page 166: ...nter the PT and CT multipliers previously calculated TrfIT Secondary is the Base Value of Voltage and Current at the Instrument Trans former Secondary of the Power Transformer These numbers are obtained by dividing the Transformer Voltage and Current by their respective Multipliers The Meter Trf values for Voltage and Current are obtained by dividing the Meter Base values by the TrfIT Secondary va...

Page 167: ... Load Loss kVA 2 No Load Loss kW 2 SQRT _________________ 2 ________________ 2 SQRT __________________ _________________ SQRT _________________ ____________________ Full Load Loss Watts kW 1 Phase Kw Load Loss ______________ Full Load Loss VA kVA Impedance 1 Phase kVA Self Cooled Rating 100 ______________ ________________ 100 _______________ kVA Full Load Loss VAR kVAR SQRT Full Load Loss kVA 2 Fu...

Page 168: ...h Exponent by raising the M T Factor to the power indicated in the Exp or Exponent column Calculate the Value at Meter Base by multiplying the M T Factor w Exp times the Value at Trf Base Loss Watts Percentage Values Meter Base kVA 600 PT Multiplier CT Multiplier 1000 600 ____________ ___________ 1000 ________________ Table 10 Quantity Value at Trf Base M T Factor M T Factor Value Exp M T Factor w...

Page 169: ...iding Value at Meter Base by Meter Base kVA and multiplying by 100 Enter calculated Loss Watts values into the Nexus meter using Communica torPQA software Refer to Appendix B of the CommunicatorPQA MeterManager PQA and EnergyPQA com Software User Manual for instructions Table 11 Quantity Value at Meter Base Meter Base kVA Loss at Meter Base Quantity No Load Loss kW Loss Watts FE No Load Loss kVAR ...

Page 170: ...Doc E151701 8 12 8 Transformer Loss Compensation Electro Industries GaugeTech Powered by Innovation This page intentionally left blank ...

Page 171: ...Section 5 3 8 for wiring detail I O Port used for functions specific to the type of module size and pin configura tion vary depending on type of module Reset Button Press and hold for three seconds to reset the module s baud rate to 57600 and its address to 247 for 30 seconds LEDs when flashing signal that the module is functioning Mounting Brackets MBIO used to secure one or more modules to a fla...

Page 172: ...utputs Eight Analog Outputs 0 1mA and 4 20mA 0 1mA and 4 20mA Eight Analog Inputs Four Relay Outputs or 0 1mA 0 20mA Four KYZ Pulse Outputs 0 5Vdc 0 10Vdc or Eight Status Inputs RESET COM OUT 1 OUT 2 OUT 3 OUT 4 0 1mA Analog Input Module OUT 5 OUT 6 OUT 7 OUT 8 RESET COM OUT 1 OUT 2 OUT 3 OUT 4 0 1mA Analog Output Module RESET COM INPUT 1 INPUT 2 INPUT 3 INPUT 4 0 1mA Analog Input Module INPUT 5 I...

Page 173: ...urce such as the EIG PSIO 12 V Refer to Section 5 3 9 to determine power needed Figure 9 2 PSIO Power Supply Side View Showing Male RS485 Port Figure 9 3 Power Flow from PSIO to I O Module www electroind com Electro Industries Gaugetech Power Supply Max Power 12 VA Input Voltage 90 240V AC DC Output Voltage 12V DC PSIO Power In On L N DANGER RESET COM INPUT 1 INPUT 2 INPUT 3 INPUT 4 0 1mA Analog I...

Page 174: ...GaugeTech 90 240V AC DC N Power In DANGER On L Power Supply PSIO Max Power 12 VA Input Voltage 12 60V DC www electroind com Output Voltage 12V DC ElectroIndustries GaugeTech 90 240V AC DC N Power In RESET COM INPUT 1 INPUT 2 INPUT 3 INPUT 4 0 1mA Analog Input Module INPUT 5 INPUT 6 INPUT 7 INPUT 8 RESET COM INPUT 1 INPUT 2 INPUT 3 INPUT 4 0 1mA Analog Input Module INPUT 5 INPUT 6 INPUT 7 INPUT 8 R...

Page 175: ... using a slotted screwdriver fasten the first I O module to the left mounting bracket of the MBIO mounting brackets kit The left mounting bracket is the one with the PEM Fasten the internal screw tightly into the left mounting bracket 5 Slide the female RS485 port into the male RS485 side port to connect the next I O module to the left module Fasten together enough to grab but do not tighten yet 6...

Page 176: ...ip The clips let you easily mount the connected I O modules or a single I O module between two brackets on a DIN rail See the figure below Figure 9 6 Mounting the Brackets on a DIN Rail To use the DIN rail mounting clips a From the front of either bracket insert the screw into the lock washer and through the hole and screw it into the clip using an appropriate screwdriver Note that the clip should...

Page 177: ...ory Settings All Nexus I O Modules are shipped with a preset address and a baud rate of 57600 See following sections for I O Module addresses Reset Button If there is a communication problem or if you are unsure of a module s address and baud rate press and hold the RESET button for 3 seconds the module will reset to a default address of 247 at 57600 baud rate for 30 seconds This enables you to in...

Page 178: ...Modules Manual Table 1 Analog Transducer Signal Output Module Specifications Model Numbers 1mAON4 4 channel analog output 0 1 mA 1mAON8 8 channel analog output 0 1 mA 20mAON4 4 channel analog output 4 20 mA 20mAON8 8 channel analog output 4 20 mA Accuracy 0 1 of Full Scale Scaling Programmable Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 2...

Page 179: ... devices 1 Accept new values through communication 2 Output current loops scaled from previously accepted values The 0 1mA module includes one more process in its Normal Mode 3 Read and average the A D and adjust values for Process 2 above The device will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 ms Normal Operation is prevented by a ...

Page 180: ...Modules Manual Table 2 Analog Input Module Specifications Model Numbers 8AI1 8 channel analog input 0 1 mA 8AI2 8 channel analog input 0 20 mA 8AI3 8 channel analog input 0 5 V DC 8AI4 8 channel analog input 0 10 V DC Accuracy 0 25 of Full Scale Scaling Programmable Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20 V DC 50 200 mA Operating T...

Page 181: ...djusts values for process 2 2 Calculates the percentage of Input Value NOTE The percentage value of the Input is stored in Input Value Registers Registers 04097 04104 The device will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 ms Normal Operation is prevented by a number of occurrences See Section 9 4 for details ...

Page 182: ...details can be found in the Modbus Communicating I O Modules Manual Digital Dry Contact Relay Output Module Specifications Model Number 4RO1 4 latching relay outputs Contact Type Changeover SPDT Relay Type Mechanically latching Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 2 0 W max 12 20 V DC Operating Temperature 20 to 70 o C 4 to 158 o F Sw...

Page 183: ...per request read or write is 4 registers The device will operate with the following default parameters Address 247 F7H Baud Rate 57600 Baud Transmit Delay Time 20 ms Some situations will cause the device to operate with the above Default Parameters See Section 9 4 for details of Default Mode 9 7 3 Normal Mode Normal Mode consists of one process the device accepts new commands to control the relays...

Page 184: ...ule and operating details can be found in the Modbus Communicating I O Modules Manual NC Normally Closed NO Normally Open C Common Digital Solid State Pulse Output Module Specifications Model Number 4PO1 Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20 V DC 50 200 mA Operating Temperature 20 to 70 o C 4 to 158 o F Voltage Rating Up to 300 V...

Page 185: ... The reception of the first value for a given channel provides the initial value for that channel Subsequent writes will increment the Residual for that channel by the dif ference of the old value and the new value The previous value is then replaced with the new value Attempting to write a value greater than the programmed Roll over Value for a given channel is completely ignored and no registers...

Page 186: ...es Pending is decremented for that channel and the Output Relay is toggled Operation Indicator 0000H OK 1000H Problem Bit 1 1 EEPROM Failure Bit 2 1 Checksum for Communications Settings bad Bit 3 1 Checksum for Programmable Settings bad Bit 4 1 1 or more Communications Settings are invalid Bit 5 1 1 or more Programmable Settings are invalid Bit 6 1 1 or more Programmable Settings have been modifie...

Page 187: ...t Module Specifications Model Number 8DI1 Communication RS485 Modbus RTU Programmable Baud Rates 4800 9600 19200 38400 57600 Power Requirement 12 20 V DC 50 200 mA Operating Temperature 20 to 70 o C 4 to 158 o F Voltage Rating Up to 300 V DC Detection Wet Dry Auto detect Memory 256 Byte I2 C EEPROM for storage of programmable settings and non volatile memory Factory Settings Modbus Address 164 Bau...

Page 188: ...47 F7H Baud Rate 57600 Baud Transmit Delay Time 20 ms 9 9 3 Normal Mode The device polls the inputs at 100Hz once every 10 ms debouncing the inputs and incrementing the Transition Accumulators for each channel as appropriate The inputs are represented by Channel 1 in the LSB through Channel 8 in the MSB of the low order byte of the register The Modbus Map for the Digital Status Input Modules and o...

Page 189: ...s safety glasses and protective clothing are recommended During normal operation of the Nexus meter dangerous voltages flow through many parts of the unit including Terminals and any connected CTs Current Trans formers and PTs Potential Transformers all I O Modules and their circuits All Primary and Secondary circuits can at times produce lethal voltages and currents Avoid contact with any current...

Page 190: ...IR OR MAINTENANCE SHOULD BE PERFORMED BY THE FACTORY DISCONNECT DEVICE The following part is considered the equipment disconnect device A SWITCH OR CIRCUIT BREAKER SHALL BE INCLUDED IN THE END USE EQUIPMENT OR BUILDING INSTALLATION THE SWITCH SHALL BE IN CLOSE PROXIMITY TO THE EQUIPMENT AND WITHIN EASY REACH OF THE OPERATOR THE SWITCH SHALL BE MARKED AS THE DISCONNECTING DEVICE FOR THE EQUIPMENT L...

Page 191: ...sibles après l installation Ne pas appliquer plus que la tension maximale que le compteur ou appareil relatif peut résister Référez vous au compteur ou aux étiquettes de l appareil et les spécifi cations de tous les appareils avant d appliquer les tensions Ne pas faire de test HIPOT diélectrique une sortie une entrée ou un terminal de réseau EIG nécessite l utilisation de les fusibles pour les fil...

Page 192: ...PTEUR DOIT ÊTRE DANS UNE PROXIMITÉ PROCHE DE L ÉQUIPEMENT ET A LA PORTÉE DE L OPÉRATEUR L INTERRUPTEUR DOIT AVOIR LA MENTION DÉBRANCHEMENT DE L APPAREIL POUR L ÉQUIPEMENT 10 1 1 Voltage Fuses EIG requires the use of fuses on each of the sense voltages and on the control power For a meter with the external power supply connection SE option Use a 0 1 A fuse on each voltage input Use a 3 A Slow Blow ...

Page 193: ... and 45S Detailed drawings of the Blade configurations are shown below and on the next page There are two configurations because the 9S and the 36S are the same NOTE The forms referred to in this chapter comply with ANSI forms 9S 36S and 45S Figure 10 1 Form 9S 36S Base with Knock Out Holes Figure 10 2 Form 45S Base with Knock Out Holes ...

Page 194: ...mas de câblage Les connexions de garde pour les transformateurs sont omises dans les schémas et ne sont pas nécessaires afin que le compteur fonctionne correctement Toutefois nous vous recommandons fortement ces connexions pour réduire les risques de choc Form Description Figure 9S Wye no PTs 3 CTs 10 3 Wye 3 PTs 3 CTs 10 4 4 Wire Delta no PTs 3 CTs 10 5 4 Wire Delta 3 PTs 3 CTs 10 6 4 Wire Delta ...

Page 195: ...té secondaire des transforma teurs de courant ne sont également pas représentés Pour éviter les chocs élec triques nous vous recommandons d utiliser ces commutateurs de court circuit blocs Assurez vous que les côtés secondaires des transformateurs de courant sont court circuités avant de les déconnecter des bornes d entrée de courant du compteur ...

Page 196: ...meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 2 3 N 1 LINE LOAD FORM 9S TRA...

Page 197: ...meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE 2 3 1 N FORM 9S TRA...

Page 198: ...the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 2 1 3 N LINE LOAD FORM 9S...

Page 199: ...the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE 2 1 3 N FORM 9S...

Page 200: ...the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LINE LOAD FORM 9S TRANSFO...

Page 201: ...the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE 2 1 3 N FORM 9S...

Page 202: ... the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LINE LOAD FORM 9S TRANSF...

Page 203: ...r the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE 2 1 3 FORM 9S...

Page 204: ...or the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE FORM 36S TRA...

Page 205: ...or the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE FORM 36S TRA...

Page 206: ... meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 2 3 N 1 LOAD LINE FORM 45S T...

Page 207: ... meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals 3 N 1 2 LOAD LINE FORM 45S T...

Page 208: ...r the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE FORM 45S TRAN...

Page 209: ...r the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals FORM 45S TRANSFORMER RA...

Page 210: ... the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals LOAD LINE FORM 45S TRANS...

Page 211: ... the meter to work properly However we strongly recommend those connections to reduce shock hazard Shorting switches blocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals FORM 45S TRANSFORMER RAT...

Page 212: ...f the 9S Forms can be mounted in an S A Adapter such as the one shown below The socket meter is pushed into the S A Adapter until the meter snaps into place The blades on the back of the socket meter make the proper connection See Figures 10 1 to 10 8 for the 9S wiring diagrams Figure 10 19 Form 9S mounted in an S A Adapter front removed ...

Page 213: ... travail de câblage doit être effectué par un professionnel agréé Les procédures matériaux équipements et connexions d installation actuels doivent être conformes aux codes et aux normes applicables Pour voir d importantes exi gences de sécurité vous référer à Section 10 1 REMARQUE pour Tous les schémas de câblage Les connexions de garde pour les transformateurs sont omises dans les schémas et ne ...

Page 214: ...tateurs de court circuit blocs pour le côté secondaire des transforma teurs de courant ne sont également pas représentés Pour éviter les chocs élec triques nous vous recommandons d utiliser ces commutateurs de court circuit blocs Assurez vous que les côtés secondaires des transformateurs de courant sont court circuités avant de les déconnecter des bornes d entrée de courant du compteur ...

Page 215: ... the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z C...

Page 216: ... the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z C...

Page 217: ... for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K...

Page 218: ...for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K ...

Page 219: ...for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K ...

Page 220: ...for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K ...

Page 221: ... for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K...

Page 222: ... for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K...

Page 223: ...e current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 ...

Page 224: ...nsformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K Z CH4 S 1...

Page 225: ...urrent transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K...

Page 226: ...urrent transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K...

Page 227: ... legacy Switchboard meter gives you all the features of the Socket meter in a compact case Easy installation or disconnection is the primary benefit of choosing this option The Switchboard system lets you install or rack out the meter in two easy steps Minimal manual wiring is required to connect or disconnect the meter The Switchboard meter comes in an S1 form relay case but it has an optional re...

Page 228: ...11 3 Installation is different and even easier see Section 11 4 CAUTION The Power Supply Input on the Switchboard unit is configured differently Please check wiring carefully ATTENTION L entrée d alimentation de l unité du tableau est configurée dif féremment Veuillez vérifier le câblage avec soin 11 2 Labels The labels on the Switchboard meter are similar to those on the Socket meter Forms are 9Z...

Page 229: ...t View 11 4 Back View and 11 5 Side View See Chapter 2 for meter specifications Figure 11 4 Switchboard Meter Dimensions Back Mfg Date Model Memory Freq Opt Comm Power Supply Notes 2 2 2011 Serial 40 83003 NEXUS 1262A SWB 20 60HZ 4IPO INP2 2 Meg Options 50Hz KYZ Out No Optional Com 56 82 8V AC NONE NO 8 5 21 59 cm 5 60 14 22 cm Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi 4 38 11 12 cm 0 50 1 27 cm 0 19...

Page 230: ...Doc E151701 11 4 11 Switchboard Meter Electro Industries GaugeTech Powered by Innovation Figure 11 5 Switchboard Meter Dimensions Side8 5 21 6 cm 6 25 15 88 cm 9 0 22 86 cm 7 0 17 78 cm 2 0 5 08 cm ...

Page 231: ...NT Check drill holes for the mounting screw you are using to insure that the mounting screw fits the box tightly enough to hold the box in place You can use a washer for a slightly smaller mounting screw 0 19 0 48 cm 6 13 15 56 cm 5 75 14 61 cm 010 025 cm 001 0025 cm 2 30 5 83 cm 4 38 11 11 cm 8 63 21 91 cm R0 10 TYP 4X 0 25 0 64 cm ...

Page 232: ...nting screws 2 Slide the meter into the case and secure it by sliding the chassis levers until they snap into place Connectors for the following are located on the back of the meter The connectors automatically plug into the available connectors on the mounting board see Figure 11 8 Pulse Outputs Four Channels Status Inputs Phone Line Network Power In COM4 COM1 IRIG B Modem Gateway RS485 3 Positio...

Page 233: ...1701 11 7 11 Switchboard Meter Electro Industries GaugeTech Powered by Innovation Figure 11 7 Switchboard Case Front Showing 4 Screw Holes Figure 11 8 Switchboard Meter Back Showing Connectors Built in Screws ...

Page 234: ...es materials equipment and connections must conform to applicable codes and standards See Section 11 1 for important safety considerations ATTENTION Tout travail de câblage doit être effectué par un professionnel agréé Les procédures matériaux équipements et connexions d installation actuels doivent être conformes aux codes et aux normes applicables Pour voir d importantes exi gences de sécurité v...

Page 235: ...tefois nous vous recommandons fortement ces connexions pour réduire les risques de choc Les commutateurs de court circuit blocs pour le côté secondaire des transforma teurs de courant ne sont également pas représentés Pour éviter les chocs élec triques nous vous recommandons d utiliser ces commutateurs de court circuit blocs Assurez vous que les côtés secondaires des transformateurs de courant son...

Page 236: ...for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K ...

Page 237: ... for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K...

Page 238: ...cks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 ...

Page 239: ...cks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 ...

Page 240: ...cks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 ...

Page 241: ...cks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 ...

Page 242: ...ocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2...

Page 243: ...ocks for the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2...

Page 244: ...r the current transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z ...

Page 245: ... transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K Z CH4...

Page 246: ...rent transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K Z...

Page 247: ...rent transformers secondary side are also not shown To prevent electrical shock we recommended you use such shorting switches blocks Make sure the CTs second ary are shorted before disconnecting them from the meter s current input terminals Vn Vc Lo Lo Lo Vb Va Ia Hi Ib Hi Ic Hi Network Phone Line L N PE Power In 8 7 6 5 4 3 2 1 C IRIG B S COM1 S COM4 HIGH SPEED Y K Z CH1 Y K Z CH2 Y K Z CH3 Y K Z...

Page 248: ...s 1262 1272 S1 form switchboard meter to fill the cutout of an existing M1 case The E137370 can be ordered as an accessory option To use the panel 1 Attach the switchboard meter to the retrofit panel using the built in switchboard screws see Figure 11 7 2 Place the switchboard meter with retrofit panel into the space for the M1 case and attach the retrofit panel using screws in all four corner hol...

Page 249: ...dustries GaugeTech Powered by Innovation 11 22 E137370 Retrofit Panel Dimensions 5 563 2 296 188 750 375 3 767 844 7 25 16 50 15 750 4X Ø 250 5 750 010 001 8 625 6 125 4 375 R TYP 10 4X Ø 82 x Ø 375 250 0935 Side Dimensions Front Dimensions in inches ...

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Page 251: ...rameters Following is a list of the formulas used to perform calculations with samples for Wye and Delta services Samples for Wye va vb vc ia ib ic in Samples for Delta vab vbc vca ia ib ic Root Mean Square RMS of Phase Voltages N number of samples For Wye x a b c Root Mean Square RMS of Line Currents N number of samples For Wye x a b c n For Delta x a b c V v N RMS x t t N x 2 1 I i N RMS x t t N...

Page 252: ...quare RMS of Line Voltages N number of samples For Wye x y a b or b c or c a For Delta xy ab bc ca Power Watts per phase N number of samples For Wye x a b c Apparent Power VA per phase For Wye x a b c V v v N RMS x y t N xy t t 2 1 V v N RMS xy t t N xy 2 1 W v i N X x t x t t N 1 X X x RMS RMS VA V I ...

Page 253: ...ve Power VAR per phase For Wye x a b c Q per Phase For Wye x a b c Active Power Watts Total N number of samples For Wye For Delta Reactive Power VAR Total N number of samples For Wye 2 2 x x x VAR VA W W W W W T a b c W v i v i N T ab t a t bc t c t t N 1 VAR VAR VAR VAR T a b c 3 2 X X X VAR W Q ...

Page 254: ...ech Powered by Innovation For Delta Apparent Power VA Total For Wye For Delta Total Q For Wye For Delta VAR V I v i N T RMS RMS ab t a t t N ab a 2 1 2 V I v i N RMS RMS bc t c t t N bc c 2 1 2 VA VA VA VA T a b c VA W VAR T T T 2 2 Q Q Q Q T a b c Q VAR W T T T 3 2 ...

Page 255: ...novation Total Energies x y WT WhT or VART VARhT or VAT VAhT or QT QhT Power Factor PF For Wye x a b c T For Delta x T Total Average Power Factor x Quadrants 1 4 positive Wh Quadrants 2 3 negative Wh Phase Angles x a b c y x 3600sec x x x W PF VA PF Wh VAh T Avg x x x _ 1 cos x x PF ...

Page 256: ...rtion THD For Wye x va vb vc ia ib ic For Delta x ia ib ic vab vbc vca K Factor x ia ib ic Voltage Imbalance N number of samples Current Imbalance 1 127 2 2 h x h x RMS THD RMS KFactor h RMS RMS x h x h h h 2 1 127 2 1 127 Imbv a b c N v v v v v v N RMS RMS RMS a b c 2 I Imb CalcN A B C I I I I RMS RMS RMS RMS ...

Page 257: ...es an average value every 15 minutes at 12 00 12 15 12 30 etc for power reading over the previous fifteen minute interval 11 45 12 00 12 00 12 15 12 15 12 30 etc Rolling Sliding Window Demand Rolling Window Demand functions like multiple overlapping Block Window Demands The programmable settings provided are the number and length of demand subinter vals At every subinterval an average arithmetic m...

Page 258: ...ure time intervals The Nexus uses the delta rate of change of a Rolling Window Demand interval to predict average demand for an approaching time period The user can set a relay or alarm to signal when the Predictive Window reaches a specific level thereby avoiding unacceptable demand levels The Nexus 1250 1252 calculates Predictive Window Demand using the following formula Example Using the previo...

Page 259: ...der of the subinterval 4 5 of the 120 of the 12 05 12 10 subinterval of Subintervals n Subinterval Length Len Partial Subinterval Length Cnt Prediction Factor Pct Table 1 Subn Sub1 Sub0 Partial Predict Len Len Len Cnt Len Len Value Sub Len i i 1 0 Cnt Value Partial Cnt i i 1 0 Pct Len Cnt Len n Value Partial n i i 1 2 0 ...

Page 260: ...Doc E151701 12 10 12 Meter Calculations Electro Industries GaugeTech Powered by Innovation Pct Len Cnt Len n x Sub Sub n Sub n n i i 1 2 1 1 0 2 0 ...

Page 261: ...nal from the power network has to be processed while conforming with Figure 13 1 shown on page 13 4 Block 1 consists of scaling circuitry and an automatic gain control function that nor malizes input Voltages to Blocks 2 3 and 4 For the specified 50 Hz operation the Voltage standard is 230 V RMS Block 2 recovers the Voltage fluctuation by squaring the input Voltage scaled to the reference level Th...

Page 262: ...nd is labeled Pinst This is a real time value and it is continuously updated Short Term Flicker Evaluation An output of 1 00 from Block 5 corresponding to the Pst value corresponds to the conventional threshold of irritability per IEC 1000 3 3 In order to evaluate flicker severity two parameters have been defined one for the short term called Pst defined in this section and one for the long term c...

Page 263: ...ssessment For this purpose the long term Plt is derived from the short term values over an appropriate period By definition this is 12 short term values of 10 minutes each over a period of 2 hours The following formula is used where Psti i 1 2 3 are consecutive readings of the short term severity Pst 13 2 1 Summary Flicker Changes in the illumination of light sources due to cyclical Voltage variat...

Page 264: ...n double click Power Quality and Alarm Settings EN 50160 IEC 61000 4 30 Flicker You will see the screen shown below Block 1 Block 2 Block 3 Voltage Detector and Gain Control Input Voltage Adaptor Square Law Demodulator High Pass Filter DC Removal Low Pass Filter Carrier Removal Weighting Filter Squaring Multiplier 1st Order Sliding Mean Filter A D Converter Sampling Rate 50Hz Minimum 64 level Clas...

Page 265: ...1 to 10 minutes The standard measurement period is nominally 10 minutes Select a Long Term Test Time PLT time range from 1 to 240 minutes The standard measurement is nominally 12 Pst periods 120 minutes Plt time must always be equal to or great than and a multiple of Pst time This is reflected in the available selections 3 Click OK when you are finished 13 4 Flicker Polling Screen 1 From the Commu...

Page 266: ...Next Plt is the countdown time to when the next Plt value is available Status Indicates the current status Active On Stopped Off Frequency Base is the operating frequency 50 or 60 Hz selected in the EN 50160 Flicker screen see Section 13 3 Current is the real time frequency measurement of the applied Voltage Base Voltage The normalized Voltage for the selected frequency 230 V for 50 Hz or 120 V fo...

Page 267: ...f you are in the Short or Long Term views click on the Instan taneous tab to display this view The PU values Pinst for Voltage Inputs Va Vb and Vc are displayed here and are continuously updated The corresponding Current Voltage values for each channel are displayed for reference Short Term Readings Click on the Short Term tab to access a screen containing three groups of Pst readings shown below ...

Page 268: ...s a screen containing three groups of Plt readings shown below Plt Readings Displayed Current Plt values for Va Vb and Vc and the time of computation Current Plt Max values for Va Vb and Vc since the last reset and the time of the last reset Current Plt Min values for Va Vb and Vc since the last reset and the time of the last reset 2 Click OK to exit the EN 50160 IEC 61000 4 30 Flicker Polling scr...

Page 269: ...icker log 13 6 Polling through a Communication Port The Pinst Pst Pst Max Pst Min Plt Plt Max Plt Min values can be polled through the Communications Port Refer to the Nexus 1262 1272 meters Modbus and DNP Mapping manuals for register assignments and data definitions 13 7 Log Viewer 1 Open Log Viewer by selecting the Open Logs icon from CommunicatorPQA soft ware s Icon bar 2 Using the menus at the...

Page 270: ...ower is removed from the meter Flicker will still be on when power returns This can cause gaps in the logged data The Max and Min values are stored and are not lost if the unit is powered down Flicker is defined using the requirements of IEC 61000 4 15 and former IEC 868 and is designed for survey purposes only Refer to those specifications for more details if needed Meters with the Flicker option...

Page 271: ...lues needed for the Transformer Loss screen of the Device Profile 3 Enter the values into the Device Profile Manually 1 Use the worksheet found in Chapter 8 Three Element Loss Compensation Work sheet to calculate the values by hand Refer to the Notes under each section 2 Enter values based on the transformer manufacturer s test report The worksheet is progressive and notes under each section will ...

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Page 277: ...rage Current When applied to current values amperes the average is a calculated value that corresponds to the thermal average over a specified time interval The interval is specified by the user in the meter profile The interval is typically 15 minutes So Average amperes is the thermal average of amperes over the previous 15 minute interval The thermal average rises to 90 of the actual value in ea...

Page 278: ... applied the thermal average will indicate 90 kW after one time interval 99 kW after two time intervals and 99 9k W after three time inter vals Bit A unit of computer information equivalent to the result of a choice between two alternatives Yes No On Off for example Or the physical representation of a bit by an electrical pulse whose presence or absence indicates data Binary Relating to a system o...

Page 279: ...outside of tolerance See ITIC Curve Channel The storage of a single value in each interval in a load profile Cold Load Pickup This value is the delay from the time control power is restored to the time when the user wants to resume demand accumulation CRC Field Cyclic Redundancy Check Field Modbus communication is an error checksum calculation that enables a Slave device to determine if a request ...

Page 280: ...me Demand Interval A specified time over which demand is calculated Display User configurable visual indication of data in a meter DNP3 A robust non proprietary protocol based on existing open standards DNP3 is used to operate between various systems in electric and other utility industries and SCADA networks EEPROM Nonvolatile memory Electrically Erasable Programmable Read Only Memory that retain...

Page 281: ...man visual system when it is subjected to changes occurring in the illumination intensity of light sources IEC 61000 4 15 and former IEC 868 describe the methods used to determine Flicker severity Harmonics Measuring values of the fundamental current and Voltage and percent of the fundamental I2T Threshold Data will not accumulate until current reaches programmed level Integer Any of the natural n...

Page 282: ...ude of a metered quantity LCD Liquid Crystal Display LED Light Emitting Diode Maximum Demand The largest demand calculated during any interval over a billing period Modbus ASCII Alternate version of the Modbus protocol that utilizes a different data transfer format This version is not dependent upon strict timing as is the RTU version This is the best choice for telecommunications applications via...

Page 283: ... to insure that no information is lost Optical Port A port that facilitates infrared communication with a meter Using an ANSI C12 13 Type II magnetic optical communications coupler and an RS232 cable from the coupler to a PC the meter can be programmed with CommunicatorPQA software Packet A short fixed length section of data that is transmitted as a unit Example a serial string of 8 bit bytes Perc...

Page 284: ...ed using an X Y coordinate system The four corners of the X Y plane are referred to as quadrants Most power applications label the right hand corner as the first quadrant and number the remaining quadrants in a counter clockwise rotation Follow ing are the positions of the quadrants 1st upper right 2nd upper left 3rd lower left and 4th lower right Power flow is generally positive in quadrants 1 an...

Page 285: ...has been adopted by several utilities to prevent customer manipulation of kW demand by simply spreading peak demand across two intervals RS232 A type of serial network connection that connects two devices to enable communication between the devices An RS232 connection connects only two points Distance between devices is typically limited to fairly short runs Current standards recommend a maximum o...

Page 286: ... or pulse output that does not use any CT or PT VT Ratio Serial Port The type of port used to directly interface with a device using the RS232 standard Swell A Voltage quality event during which the RMS Voltage is higher than normal for a period of time typically from 1 2 cycle to 1 minute TDD The Total Demand Distortion of the current waveform The ratio of the root sum square value of the harmoni...

Page 287: ... can include year month day hour minute second and Daylight Savings Time indication TOU Time of Use Uncompensated Power VA Watt and VAR readings not adjusted by Transformer Loss Compensation V2T Threshold Data will stop accumulating when Voltage falls below programmed level Voltage Vab Vab Vbc Vca are all Phase to Phase Voltage measurements These Voltages are measured between the three phase Volta...

Page 288: ...phase The events the meter tracks include sags swells interruptions and imbalances VT Ratio The Voltage Transformer Ratio is used to scale the value of the Voltage to the primary side of an instrument transformer Also referred to as PT Ratio Voltage Vaux This is the fourth Voltage input measured from between the Vaux and Vref inputs This input can be scaled to any value However the actual input Vo...

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