Dranetz-BMI EPQ DataNode 5500 Series Скачать руководство пользователя страница 81

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DataNode Specifications (continued)

5530 / 5520 / 5513 / 5510

Trigger Conditions
RMS

V and I Selectable cycles to trip and restore

Waveshape faults

V and I Selectable duration and magnitude to trigger

Transients

Voltage and current, high frequency and crest peak

Harmonics

V and I Individual and THD

Phase Shift

Fundamental

Timed Readings

1-120 minutes

Cross Triggered

From other DataNodes on RMS or transient events

1159 Classification

Yes

Impulsive transient

Yes

Oscillatory transient

up to 3KHz

Interruption

Yes

Sag

Yes

Swell

Yes

Under/overvoltage

Yes

Sustained interrupt

Yes

Harmonics

Yes

Interharmonics

Yes

Notching

Yes

Trending

Min/Max/Avg on parameters at user specified interval

Communication
Serial port type

RS232/RS485 (used for diagnostic and initial setup only)

Serial baud rate

9600 baud, 8 bit, 1 stop, no parity, no flow control

Ethernet

10BaseT using UCA-2 to InfoNode

Other

AUI for fiber optic, etc.

Other
Firmware Update

Remotely uploadable

Field Calibration Certification

Yes

Mounting

Rack, Panel, DeskTop, NEMA 4X

Installation Categories
Mains Supply

Installation Category II, Pollution Degree 2

Measurement Inputs

Installation Category III, Pollution Degree 2

Physical Characteristics
Dimensions

13”W x 8”D x 5”H (330.2mm x 203.2mm x 127.0mm)

Weight

6.3 lbs (2.9 kg)

Enclosure

Painted Aluminum

5-3

Specifications

EPQ DataNode Series User’s Guide

Содержание EPQ DataNode 5500 Series

Страница 1: ...quirements applicable to your installation Installation operation and maintenance of this instrument must be performed by qualified personnel only The National Electrical Code defines a qualified pers...

Страница 2: ...of Electrotek Concepts Copyright 2000 2002 2004 Dranetz BMI All rights reserved No part of this book may be reproduced stored in a retrieval system or transcribed in any form or by any means electron...

Страница 3: ...re connect conform ment au National Electrical Code ANSI NFPA 70 2002 des Etats Unis et toutes les exigences de s curit applicables votre installation Cet instrument doit tre install utilis et entrete...

Страница 4: ...e its data other equipment or property NOTE statements call attention to specific information Symbols The following International Electrotechnical Commission IEC sym bols are marked on the top and rea...

Страница 5: ...ros equipos o propiedad Las NOTAS llaman la atenci n hacia la informaci n espec fica S mbolos Los siguientes s mbolos de la Comisi n Internacional Electrot cnica IEC aparecen marcados en el panel supe...

Страница 6: ...donn es d autres quipements ou biens mat riels Les messages NOTA attirent l attention sur certains renseignements sp cifiques Symboles Les symboles suivants de la Commission lectrotechnique internatio...

Страница 7: ...DataNode sein er Daten oder anderer Ger te bzw von Eigentum f hren k nnen HINWEISE machen auf bestimmte Informationen aufmerksam Symbole Die folgenden Symbole der Internationalen Elektrotechnischen Ko...

Страница 8: ...eemplace de inmediato cualquier parte defectuosa Mesures de S curit Les mesures de s curit suivantes doivent tre prises chaque fois qu un type de connexion quelconque est effectu sur l in strument Con...

Страница 9: ...ul interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accor dance with the in...

Страница 10: ...me states do not allow limitations of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may also have rights...

Страница 11: ...nd answers from all the connected DataNodes The user interface is a conventional Internet browser with access restricted only to those users with the correct password No additional software is require...

Страница 12: ...nt Connectors Warning and Safety Precautions 2 2 Connection Guidelines 2 3 DataNode 5520 Connecting Power Single Phase 2 4 Split Phase 2 5 3 Wire Grounded Wye 3 Element Direct 2 6 3 Wire Delta 3 Eleme...

Страница 13: ...b 3 2 RMS Variations tab 3 2 RMS Trigger Parameters 3 3 How RMS Disturbances Are Recorded 3 3 RMS Sample Capture 3 6 RMS Waveform Capture 3 7 Transients tab 3 8 Transient Detection 3 8 Transducers tab...

Страница 14: ...EPQ DataNode Series User s Guide...

Страница 15: ...types Model 5530 Model 5520 Model 5513 and Model 5510 The EPQ DataNode models are designed with compre hensive and PQ optimized data acquisition capabilities for power quality related disturbances or...

Страница 16: ...1159 Classification Power Energy V I W VA VAR Power Factor True Displacement Frequency Demand KW KVA Consumption Kwh Revenue Accuracy ANSI C12 1 Harmonics Total Harmonic Distortion Interharmonics Spec...

Страница 17: ...will flash when the unit is responding to network requests Except when connected via AUI port POWER Indicator lamp will flash in a heartbeat fashion when the unit is operating normally NOTE All three...

Страница 18: ...power version 90 250V ac 47 63 Hz and 105 125V dc 20W max Fuses Slow blow 250V ac 1 25A Power switch Press to turn unit power on or off Power indicator lamp on front panel flashes when unit is on Dig...

Страница 19: ...ent Pod Allows connection to current pod via interface cable for 5510 5530 or via optional CT adapter BNCTO55 TRTO55 Line power AC only power version 90 250V ac 47 63 Hz AC DC power version 90 250V ac...

Страница 20: ...Vpk phase A B C voltage plus neutral and ground Neutral to ground voltage range 0 5 20 Vrms AC or DC Current Module Accepts four 0 01 5 Arms and up to 12 AWG wires Measurement range allows 25 Apk Data...

Страница 21: ...ble length is 3 0 9m Power type card use with old model pods only Display and set power measurement type Phase to Phase or Phase to Neutral The power type showing should be the power type in use Front...

Страница 22: ...eutral voltage input connectors see page 1 9 Current Channels Phases A B C and Neutral probe current input connectors see page 1 9 Line power AC only power version 90 250V ac 47 63 Hz AC DC power vers...

Страница 23: ...oltage Input Connector color white CH C Differential Voltage Input Connector color blue CH C Differential Voltage Input Connector color white NEUTRAL Differential Voltage Input Connector color grey NE...

Страница 24: ...used with any EPQ DataNode model Reference part number for the AUI Adapter including the Slide Latch Clip Kit shown below is P N AUI10BT AUI Adapter Kit NOTE Not all hardware included in the kit is us...

Страница 25: ...sword are the defaults 6 The main menu selection has two choices 1 Communication Parameter Setup 2 Administrative Functions Select 1 7 On the next menu choose 1 for Setting TCP IP Parameters 8 Enter t...

Страница 26: ...clear with replacement of the fuse Refer condition to a qualified technician DataNode 5520 Connecting the Voltage Current Connectors Safety Precautions The following safety precautions must be follow...

Страница 27: ...m on pages 2 4 to 2 11 for wiring configurations DataNode 5520 Connecting the Voltage Current Connectors 5 Connect monitored voltages to the appropriate Voltage Input connections Refer to the appropri...

Страница 28: ...ION DO NOT REMOVE OPTION COVERS This device complies with Part 15 of the FCC Rules Operation is subject to the following two Conditions 1 This divice may not cause harmful interference and 2 this devi...

Страница 29: ...device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1 RS 485 10BaseT AUI NET PC...

Страница 30: ...1 RS 485 10BaseT AUI NET PC Rx Tx NEUTRAL PHASE C PHASE B PHASE A CURRENT INPUTS 5A RMS NOMINAL MAX RATINGS 25A pk 600V RMS NEUTRAL PHASE C PHASE B PHASE A CAUTION REMOVAL OF COVER PANEL MAY RESULT I...

Страница 31: ...nd 2 this device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1 RS 485 10BaseT A...

Страница 32: ...interference and 2 this device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1 R...

Страница 33: ...ul interference and 2 this device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1...

Страница 34: ...erence and 2 this device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1 RS 485 1...

Страница 35: ...erference and 2 this device must accept any interference receivied including interference that may cause undersired operation CAUTION DO NOT REMOVE OPTION COVERS Data Node SERIES 5500 IRDA COM 1 RS 48...

Страница 36: ...Repeated failure indicates a defective condition that will not clear with replacement of the fuse Refer condition to a qualified technician Safety Precautions The following safety precautions must be...

Страница 37: ...load 12 Turn DataNode ON by pushing the power switch Proceed to Chapter 3 Operation EPQ DataNode Series User s Guide 2 13 2 Preparation for Use Connection Guidelines 1 Refer to the figures on pages 2...

Страница 38: ...EMOVE OPTION COVERS This device complies with Part 15 of the FCC Rules Operation is subject to the following two Conditions 1 This divice may not cause harmful interference and 2 this device must acce...

Страница 39: ...r Use Current Input Pod DataNode 5510 5530 Mounting Dimensions for Voltage and Current Input Pods old model Voltage Input Pod Pod depth is approximately 2 5 63 5 mm Pod depth is approximately 2 5 63 5...

Страница 40: ...EMOVE OPTION COVERS This device complies with Part 15 of the FCC Rules Operation is subject to the following two Conditions 1 This divice may not cause harmful interference and 2 this device must acce...

Страница 41: ...User s Guide 2 17 2 Preparation for Use DataNode 5510 5530 Mounting Dimensions for Voltage and Current Input Pods new model 5 600 2 187 1 250 Current Input Pod 5 600 2 187 1 250 Voltage Input Pod 1 09...

Страница 42: ...ty Ground Safety Ground Neutral Optional Safety Ground Phase A Phase B Neutral Phase C Safety Ground Phase A Phase B Phase C Phase A Phase B Phase C WARNING Use only insulated wire for any connections...

Страница 43: ...Type SINGLE PHASE LINE LOAD A N Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block To Switchgear Chassis Ground optional Connections must be performed in compliance with all safety requi...

Страница 44: ...Type SPLIT PHASE LINE LOAD A B N Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block To Switchgear Chassis Ground optional Connections must be performed in compliance with all safety requ...

Страница 45: ...B C Fuses CT Shorting Switch or Test Block To Switchgear Chassis Ground Switchgear Chassis Ground Switchgear Chassis Ground Connections must be performed in compliance with all safety requirements ap...

Страница 46: ...5510 5530 Connecting Power to the Input Pods New model Voltage and Current Pods shown Connection Type 3 WIRE DELTA 3 ELEMENT DIRECT Setup Mode Delta Connections must be performed in compliance with al...

Страница 47: ...TA 2 ELEMENT 2 PT 2 CT Setup Mode Delta LINE LOAD A B C Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block To Switchgear Chassis Ground Connections must be performed in compliance with a...

Страница 48: ...2 1 2 ELEMENT 2 PT 3 CT Setup Mode Delta LINE LOAD A B C Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block To Switchgear Chassis Ground Connections must be performed in compliance with...

Страница 49: ...ELEMENT DIRECT Setup Mode Wye LINE LOAD A B C N Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block To Switchgear Chassis Ground optional Connections must be performed in compliance with...

Страница 50: ...ELEMENT 3 PT Setup Mode Wye LINE LOAD A B C Fuses Switchgear Chassis Ground CT Shorting Switch or Test Block N PTs To Switchgear Chassis Ground optional NOTE Connections of CT leg to ground is recomme...

Страница 51: ...with replacement of the fuse Refer condition to a qualified technician DataNode 5513 Voltage Measurement Cables and Current Probe Connections Safety Precautions The following safety precautions must b...

Страница 52: ...apter There are two optional fuse accessory kits available for use with the measurement cables One kit P N FVA 1 contains one fused voltage adapter and one measurement connecting Red cable 50 cm in le...

Страница 53: ...pter P N 899107 Contact Dranetz BMI Customer Service Department at 1 800 372 6832 or 732 287 3680 for more information on optional accessories EPQ DataNode Series User s Guide 2 29 NOTE 2 FT CABLE INC...

Страница 54: ...ections Voltage probes are connected to the individual source or load line and are referenced to the return common line voltage probe connection for greater accuracy Example Single phase voltage conne...

Страница 55: ...nection using Neutral as a differential input for measuring neutral to ground voltage Connections are identical for split phase and wye configurations One probe connects the source neutral line to the...

Страница 56: ...s de sonde autour d un fil non isol Des sondes de ce type sont con ues pour l usage autour des fils isol s seulement L utilisation seulement a compl tement isol des noyaux de sonde sans des secteurs...

Страница 57: ...on the handle pointing towards the load Probe positioning An arrow marking on the handle is a guide to ensure that you position the probe with the arrow pointing towards the load when monitor ing the...

Страница 58: ...uring medium or high frequency transients TR2021 TR2019B TR2022 TR2023 These four probes are made for Dranetz BMI Model 658 but can be used with DataNode 5513 current connectors by using an adapter ca...

Страница 59: ...Guide 2 35 Current Probes Available for Use with DataNode 5513 Current Connectors 4300 TO LEMFLEX CURRENT PROBE ADAPTER CABLE 116310 G1 NOTE Current probes TR2500 can be used interchangeably with TR2...

Страница 60: ...s may produce erroneous power measurement Example Single phase current probe connection The following figure shows how to connect a current probe to channel A for current monitoring of a single phase...

Страница 61: ...ranslated and displayed in meaningful data for mat under the VIEWS tab REAL TIME tab and REPORTS tab Refer to the InfoNode Series 5500 User s Guide for detailed discussions on the said menu tabs Stand...

Страница 62: ...e to phase value For wye circuits L N N G and L L limits can be programmed For delta circuits only L L voltages are applicable To disable the value uncheck the enable box If a high or low limit crossi...

Страница 63: ...ered the following information is needed to define how and what information is to be stored Pre event start RMS samples cycles the number of cycles of instantaneous twice per cycle RMS samples to reco...

Страница 64: ...conds to use this rate the number of seconds to record at the selected reduced sampling rate Short Duration Variations Since memory capacity of the monitoring instrument makes it impractical to always...

Страница 65: ...t ended after a user definable time period the instrument switches to averaging several cycles of RMS data to further conserve memory At this point the RMS plot diverges from a single valued line to a...

Страница 66: ...24 RMS values using a 1 cycle wide RMS calculation window sliding by 1 2 cycle for up to 512 cycles 10 25 seconds at 50 Hz 8 533 seconds at 60 Hz There is no min or max values during the instantaneous...

Страница 67: ...qual to or less than 16 If the event is short enough the two waveform recordings are merged into a single larger one Hence if the maximum settings are used disturbances of up to 22 cycles in duration...

Страница 68: ...e 128 time slices of the waveform there are 3 sample points taken These are a Low Frequency sample and a pair of High Frequency Peak samples The Low Frequency point is used for the calculation of RMS...

Страница 69: ...er of sample points N For each sample vi when compared to vi 1cycle where the deviation in magnitude is outside the maximum allowable deviation a counter is incremented For each sample vi that is with...

Страница 70: ...are updated and stored at the end of the interval for trending For wye circuits L N N G and L L limits can be pro grammed For delta circuits only L L values are applica ble Other selectable parameters...

Страница 71: ...anced Metering tab IMBALANCE tab The voltage and current imbalance for each phase from the average value for all three phases can be trended and lim its set The positive negative and zero sequence com...

Страница 72: ...3 12 EPQ DataNode Series User s Guide 3 Operation This page intentionally left blank...

Страница 73: ...ormation on options and accessories Power Quality optional on 5510 standard on 5513 5520 5530 Cycle by Cycle V I Analysis Current RMS Triggers Freq Transients V I Waveshape Trigger Power Energy Revenu...

Страница 74: ...sion Cable FBR100 300 ft Fiber Optic Extension Cable FBR300 DB25 F DB9 F to DB25 F DB9 F Pin Null RS 232 6 ft Cable RS232NUL 10BaseT Null RJ 45 6 ft Cable 10BTNUL Mounting Brackets Long 550BRKTL Mount...

Страница 75: ...300 3000A AC LEMFLEX3K DRANFLEX Current Probe 300A 3000A 24 DRANFLEX4300 3K24 DRANFLEX Current Probe 300A 3000A 36 DRANFLEX4300 3K36 DRANFLEX Current Probe 300A 3000A 48 DRANFLEX4300 3K48 DRANFLEX Cu...

Страница 76: ...4 4 4 Optional Accessories EPQ DataNode Series User s Guide CAUTION DO NOT REMOVE OPTION COVER CAUTION DO NOT REMOVE OPTION COVER DataNode physical dimensions applicable to Series 5500 DataNode...

Страница 77: ...EPQ DataNode Series User s Guide 4 5 Optional Accessories Rack Mounting Panel 19 55RACK applicable to 553x Series Pod enclosure plate showing distances applicable to 553x Series 4...

Страница 78: ...ting brackets short style 550BRKTS WARNING Mounting to a vertical structure must be performed by qualified personnel who can verify that the anchoring surface is structurally sound and will support th...

Страница 79: ...nal 5A I range peak 5x with 5532 pod 20x with 5533 I accuracy 0 2 reading 0 2 full scale RMS Sample rate Max 384 samples cycle 128 s c dual peak detectors for 5510T 5513T 5520T 5530T synchronous with...

Страница 80: ...conds typ W Harmonics 50th signed and unsigned total Update rate 5 seconds typical Interharmonic RMS Yes Frequency range 45 65 Hz Frequency accuracy 0 2 Environmental Power Supply Burden 20W Power Sup...

Страница 81: ...s Harmonics Yes Interharmonics Yes Notching Yes Trending Min Max Avg on parameters at user specified interval Communication Serial port type RS232 RS485 used for diagnostic and initial setup only Seri...

Страница 82: ...g swell interruption and transient capture the user can select parameters for trending at user selected time intervals This includes min max aver age values over each interval updated once per second...

Страница 83: ...ungen Pr fen Sie die Batteriepackung optisch auf Korrosion Specifications EPQ DataNode Series User s Guide 5 Maintenance and Service In normal use only the internal backup battery pack requires period...

Страница 84: ...the mounting orientation of the battery pack Remove the battery pack hold down strap by loosening its two retaining screws WARNING Replace with Dranetz BMI battery pack 116455 G1 only ADVERTENCIA Reem...

Страница 85: ...Connection Mode 8 Display All Communication Parameters Set TCP IP Parameters Press Enter to keep the existing value in a field InfoNode IP Address 0 0 0 0 Enter new InfoNode IP Address xxx xxx xxx xxx...

Страница 86: ...ere 1 tick 1 60 second 154 5 6 114 6 5 6 6 13 5 5 6 5 6 55 12 Downloaded 914875 bytes Validating program Please wait Good IOP program file checksum IOP program download Successful About to execute dow...

Страница 87: ...menu now press escape to get to the main menu Dranetz BMI 5530 DataNode Boot Configuration Press the appropriate number key to select option Press the ESC key to exit setup and start the DataNode Mai...

Страница 88: ...up with CRC of DF56 IOP Successfully initialized bricks setup from NVRAMIOP About to send change setup message IOP cfg GLOB 0xC IOP cfg MSQI 0x1 IOP cfg MDMD 0x5 IOP cfg MVAR 0x5 IOP cfg MTRN 0x5 Task...

Страница 89: ...note the folowing conventions used in the screen displays Items in italics are not programmable but included for information purpose to the user Items in bold are examples of what can be entered Selec...

Страница 90: ...tage limits in Percent Volts Per Unit Percent Steady State Trending Time between periodic samples min 1 Demand Interval min 15 Demand Sub Interval min 5 Basic Metering Metering MMXU0 Basic Revenue Met...

Страница 91: ...t B Current C Current N Current Limit enabled High limit 108 0 Low limit 90 0 Pre and Post Event Captures Pre event start RMS samples cycles 10 Post event start RMS samples cycles 238 Pre event start...

Страница 92: ...faults produce milder sags but sag duration may increase due to increased protective device operating times While most instantaneous sags are related to faults motor starting is the chief cause of lon...

Страница 93: ...transient is a short duration disturbance characterized by a very rapid change in the magnitude of the mea sured quantity Lightning strokes the most common cause of this type of disturbance produce cu...

Страница 94: ...sformer windings However transformers with grounded secondaries introduce a path for primary side arrester discharge current to flow into the secondary system The most common example is the residentia...

Страница 95: ...correction capacitors is a special cause for concern Potentially destruc tive voltage magnification at the customer capacitor can occur when the oscillation frequency of the switching transient excite...

Страница 96: ...Figure B 6 Back to Back Capacitor Switching a Voltage magnification at customer capacitor due to energizing capacitor on utility system b Equivalent circuit f L C f L C 1 1 1 2 2 2 1 2 1 2 Switching...

Страница 97: ...oupled from the utility distribution system Medium frequency oscillations tend to be very localized Conductor and load resistances provide damping which limits the portion of the circuit exposed to th...

Страница 98: ...ed for an output signal of 120 V rms the upper resistor in the divider will dissipate up to 10 Watts Therefore it is necessary for the resistors in the divider to meet mili tary specifications and for...

Страница 99: ...rimary wound CTs are available from a variety of CT manufacturers Secondary Sites Transducer requirements at secondary sites are much simpler Direct connection for the voltage is possible for 120 208...

Страница 100: ...nfoNode Access User ID admin InfoNode Access Password Firmware Access User ID admin Firmware Access Password One Time Operations Reset 302 Default Setup Clear 332 Database and reboot Do both of the ab...

Страница 101: ...Reset All Values Energy Accumulators Reset Phase Energy Never reset Reset Total Energy Never reset Reset Integrated Reactive Power Never reset Reset Total integrated Reactive Power Never reset Reset...

Страница 102: ...ne Line Voltage C A Power Factor C Line Current A Average Power Factor Line Current B Angle Between Phases A Line Current C Angle Between Phases B Line Current N Angle Between Phases C Active Power A...

Страница 103: ...ase Energy C Total Energy Integrated Reactive Power A Integrated Reactive Power B Integrated Reactive Power C Total Integrated Reactive Power Enable periodic sampling High High limit enabled High High...

Страница 104: ...Dmd Total W Dmd Coincident w Pk W Dmd Var Dmd Coincident w Pk VA Dmd Avg PF Coincident w Pk VA Dmd Predicted Real Power Dmd Total Predicted Reactive Power Dmd Total Predicted Apparent Power Dmd Total...

Страница 105: ...fund freq VarHrs A Forward fund freq VarHrs B Forward fund freq VarHrs C Reverse fund freq VarHrs A Reverse fund freq VarHrs B Reverse fund freq VarHrs C Forward tot fund freq VarHrs Reverse tot fund...

Страница 106: ...Power Factor A Displacement Power Factor B Displacement Power Factor C Worst Displacement Power Factor Average Displacement PF Total Arithmetic Disp PF Total Vector Disp Power Factor Residual Current...

Страница 107: ...vg A B V Imbalance L L dev from avg B C V Imbalance L L dev from avg C A V Imbalance L N Max from avg V Imbalance L L Max from avg V Imbalance Neg Seq Method V Imbalance Zero Seq Method I Imbalance de...

Страница 108: ...nd Normalized B Current THD Fund Normalized C Current THD Fund Normalized N Current THD RMS Normalized A Current THD RMS Normalized B Current THD RMS Normalized C Current THD RMS Normalized N Current...

Страница 109: ...o resonance at a harmonic frequency leading to high harmonic voltages and currents throughout the system Figure B 7 Parallel Resonance Electronic Power Converters Adjustable speed motor drives Switchi...

Страница 110: ...a special case that falls between transients and harmonic distortion Since the notching is periodic it can be characterized as a harmonic spectrum However the frequency components may be too high to m...

Страница 111: ...a Vcn Van Low Limit Set point or threshold below the normal range Lo Lo or Very Low Limit Set point or threshold below the low limit Negative Sequence The three phase vectors that would make a motor r...

Страница 112: ...VA Square root of fundamental frequency component of WATTs squared fundamental VARs squared True Phase Power or Real Power Measured in watts of each phase calculated over 1 second from cycle by cycle...

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