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Operation Manual

Model 2300 Series

Digital Power Analyzers

VA L H A L L A

Need Help? Call 800-548-9806.

www.valhallascientific.com

Summary of Contents for 2300

Page 1: ...Operation Manual Model 2300 Series Digital Power Analyzers VA L H A L L A S C I E N T I F I C Need Help Call 800 548 9806 www valhallascientific com 2015 Valhalla Scientific Inc All Rights Reserved...

Page 2: ...ty period for this instrument is stated on your invoice and packing list Please refer to these to determine appropriate warranty dates We will repair or replace the instrument during the warranty peri...

Page 3: ...This manual covers the following Valhalla Scientific products Models 2300 2301 2300L and 2301L...

Page 4: ...ations 2 4 Physical Specifications 2 5 Environmental Specifications 2 6 Miscellaneous Specifications 2 7 Performance Verification SECTION III AVAILABLE OPTIONS 3 1 General 3 2 Extended Current Range 3...

Page 5: ...Connections Figure 6 9 Three phase Three wire Load Power Connections Figure 6 10 Three phase Three wire CT Load Power Connections Figure 6 11 Three phase Three wire PT Load Power Connections Figure 6...

Page 6: ...IOX Calibration 8 7 Option IO 3 Calibration Figure 8 1 Voltage Calibration Channel A Figure 8 2 Voltage Calibration Channel B Figure 8 3 Voltage Calibration Channel C Figure 8 4 Current Calibration Ch...

Page 7: ...ts Figure 1 Load Power Connections Figure 2 Source Power Connections Figure 3 Lead Resistance Error Sources Figure 4 Minimizing Error Sources AN104 Measuring Phase Currents in 3 Wire Systems Figure 1...

Page 8: ...SECTION XII MANUAL CHANGES AND ADDENDUMS SECTION XIII PARTS LISTS SECTION XIV DRAWINGS AND SCHEMATICS...

Page 9: ...Power Analyzers will be referred to as a 2300 unless specific differences between models exist In this case the reader will be informed of any necessary changes 1 2 Inspection If the shipping carton i...

Page 10: ...nel above and below the 2300 in the rack If a unit placed beneath the 2300 has an unusually hot exterior top surface and it is not possible to alter its location it is recommended that an aluminum ref...

Page 11: ...100mV 2 1 2 Voltage Accuracy and Bandwidth For all models 20 C to 30 C for 1 year True RMS DC coupled AC DC DC and 20Hz to 5KHz 0 1 of reading 6 digits 5 KHz to 15KHz 0 5 of reading 6 digits 15KHz to...

Page 12: ...2A continuous 20A continuous 150A continuous Peak Input 100msec 5A 100msec 50A 100msec 500A no damage fused 2 2 2 Current Accuracy For all models 20 C to 30 C for 1 year True RMS DC coupled AC DC 0 5...

Page 13: ...0 3000 6000 12000 30 00KW 60 00KW 2 3 3 2300L Three phase Three wire Resolution Watts Range 0 2A 0 5A 1A 2A 5A 10A 20A 50A 100A 5V 2 000 5 000 10 000 20 00 50 00 100 00 200 0 500 0 1000 0 15V 6 000 15...

Page 14: ...reading 0 25 of volts rng x amps rng throughout Shunt Bandwidth Shunt Bandwidths Low Shunt 20Hz to 10KHz Medium Shunt 20Hz to 5KHz High Shunt 20Hz to 1KHz Temperature Coefficient 1 10 of range specifi...

Page 15: ...erformance of the Model 2300 may be performed at any time and is especially recommended following receipt of the unit or following transportation Verification may be achieved with two levels verified...

Page 16: ...xtremes of temperature As with any precision equipment some change in calibration may occur due to this This effect has been carefully monitored by Valhalla Scientific and has been found to be small e...

Page 17: ...ease contact your local Valhalla representative or the factory for more details 3 3 Options IO 1 and IO 3 Options IO 1 and IO 3 provide chassis ground referenced analog outputs for watts only IO 1 or...

Page 18: ...utput without exceeding the accuracy specifications 3 5 Option LF This option provides extended low frequency performance to 2Hz at the expense of extended settling time Settling time is increased by...

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Page 21: ...d by the LED s in this window If an overload is indicated the next highest voltage or current range should be selected These indicators may also alert the user to the presence of large spikes on the i...

Page 22: ...UN mode While in the HOLD mode the button labeled SAMPLE becomes active This may be pressed briefly to update the displays without leaving the HOLD mode Note Placing the instrument in the HOLD mode do...

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Page 25: ...the Option IO 3 analog output connector if installed 5 1 5 IOX OR IEEE Connector This is the Option IOX analog output connector or the Option TL 4 IEEE interface connector if installed 5 1 6 IEEE ADDR...

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Page 27: ...els Wattmeter channel A measures the current in phase A and the voltage between phase A and phase B Channel C measures the current in phase C and the voltage between phase C and phase B Phase B is not...

Page 28: ...the Model 2300 6 4 4 Single Phase Two Wire CT PT Load Power Connections Connect the wattmeter as shown as Figure 6 4 Observe the polarities of the current and potential transformers The watts reading...

Page 29: ...cations of the Model 2300 6 4 12 Three Phase Three Wire CT PT Load Power Connections Connect the wattmeter as shown in Figure 6 12 Observe the polarities of the current and potential transformers The...

Page 30: ...s shown in Figure 6 19 Observe the polarities of the potential transformers The watts reading should be multiplied by PT ratio Caution Do not exceed the common mode specifications of the Model 2300 6...

Page 31: ...plication Make connections to the appropriate current shunt terminal for the expected range of current levels 2 Press the appropriate A B or C display selection push button for the channel connected 3...

Page 32: ...r application Make connections to the appropriate current shunt terminals for the expected range of current levels 2 Press the 3 4 WIRE display selection push button 3 Select the lowest current range...

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Page 45: ...ion or commands having meaning only to the recipient device usually refers to commands which are not defined in IEEE Standard 488 of 1978 Handshake An exchange of signals between two devices which is...

Page 46: ...mission rate is 1 megabyte per second Of all the devices on the bus only one may be the controller at any time The controller exercises control over all other devices on the bus The other devices may...

Page 47: ...anguage other than HP Basic consult your programmer s guide for the correct command syntax 7 4 1 Device Clear DCL This command will cause all of the devices to enter the reset state both interface and...

Page 48: ...arallel poll This will cause all devices to respond by simultaneously placing their parallel poll response byte onto the DIO bus wires The 2300 does not implement this command 7 4 7 Local Lock Out LLO...

Page 49: ...itch on the rear of the instrument The address may be any number from 1 to 30 This number is calculated using a binary weighted code set by the switches shown in Figure 7 1 For example address 15 woul...

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Page 51: ...et to 15 It is also assumed that the user is familiar with the operating principles discussed in Sections 4 through 6 If you are using a language other than HP Basic consult your programmer s manual f...

Page 52: ...d L F with EOI OUTPUT 715 D2 C R OUTPUT 715 D3 C R with EOI OUTPUT 715 D4 EOI OUTPUT 715 D5 L F 7 7 7 SRQ and Serial Poll Commands The 2300 may assert the SRQ wire if it receives an undecipherable com...

Page 53: ...anipulations of the output result are required when using these options Option LF Multiply watt hours by 2 Option HS 5 Divide watt hours by 2 Option HS 12 Divide watt hours by 5 7 7 10 Reading the Dis...

Page 54: ...eater details on use of the various commands The settings labeled default are the conditions that exist whenever the 2300 is initially powered up The default conditions are also restored upon returnin...

Page 55: ...read T0 Requests voltage data default T1 Requests current data T2 Requests power data T3 Requests average power data T4 Requests watt hour data Vn Voltage range commands V0 50 volt range 5V 2300L defa...

Page 56: ...ration step using R3 on the phase A signal processing board is noted as AR3 The main board is identified in a similar manner e g MBR3 The locations of the adjustments are shown on drawings 2300 600 fo...

Page 57: ...t range 16 Apply 600 0 volts and adjust BR22 for a display of 600 0 17 Apply 60 00 volts and adjust MBR219 for a display of 60 00 18 Repeat steps 16 and 17 for minimum interaction 19 Select the 300 30...

Page 58: ...ay of 50 00 Disconnect the current calibrator 17 Connect the DVM low lead to a B shield screw high lead to BIC5 pin 6 Adjust BR9 for 0V 10mV DC Remove the DVM 18 Connect the 2300 as shown in Figure 8...

Page 59: ...0000 amps and adjust MBR110 for a display of 15 00 5 Repeat steps 3 and 4 for minimum interaction 6 Select the 50 5 volt range 7 Apply 50 00 volts and 1 0000 amps and adjust MBR37 for a display of 50...

Page 60: ...consult the factory for the adjustment procedure 8 5 2 Voltage Calibration 1 Connect the DVM low lead to a phase A shield screw high lead to AIC7 pin 6 2 Adjust AR3 for 0V 1mVDC 3 Connect the 2300 as...

Page 61: ...this point Take precautions to avoid contact with AC power wiring Note In simultaneous TL 4 IOX installations adjustments are accessed from the top of the instrument and removal of the bottom cover i...

Page 62: ...00 volts and adjust RV21 for 5 000 volts at pin 7 of the IOX connector 3 Apply 15 00 volts and adjust RV5 for 5000 volts at pin 7 of the IOX connector 4 Repeat steps 2 and 3 for minimal interaction 5...

Page 63: ...nnect the DVM negative lead to pin 2 of the IO 3 connector Connect the DVM positive lead to pin 1 Apply 1000 amps 1 10 of full scale to the 2301 Adjust RV4 Amps Zero for 5000 volts on the DVM Apply 1...

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Page 73: ...sions of the input to the power multiplier stage The gain of this stage is controlled by the control isolator stage 10 2 3 Power Multiplier The power multiplier instantaneously multiplies the current...

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Page 75: ...te for the resistance tolerance of the shunts The outputs of IC1 are applied to the amplifier stage composed of IC s 2 and 3 and their associated components The gain of the stage is determined by the...

Page 76: ...The triangle s frequency is about 5KHz The actual frequency does not matter The triangle amplitude is set by zener diodes CR4 and CR5 IC12 is configured as an integrator and IC11 as a comparator Posi...

Page 77: ...ers T1 and T2 and their associated components Each transformer has two primary windings that are connected in series for 240 volt operation or parallel for 120 volt operation The secondary of T1 is re...

Page 78: ...d TR5 DS5 and then repeated The repetition rate is sufficiently high that all digits appear to be continuously illuminated When 3 3 wire or 3 4 wire displays are selected the voltage and current displ...

Page 79: ...re applied to unity gain inverting amplifiers IC1 3 and their associated components The gain and offset of each amplifier are adjustable to allow calibration The outputs of the watts receivers are app...

Page 80: ...5 Three phase Three wire Inductive Load Protection Method 2 Figure 6 Three phase Four wire Inductive Load Protection Method 2 AN102 Using Current and Potential Transformers Figure 1 Current Transforme...

Page 81: ...e 2 Digital Power Analyzer Error Sources Figure 3 Error Source Reduction Figure 4 Measuring Power Loss in Connecting Leads AN108 Measuring Single Phase Three wire Power Figure 1 Single phase Three wir...

Page 82: ...3 detail this type of protection for single and three phase loads 101 2 2 Spark Gap Protection In many cases the switch protection method is not practical Spark gap protection is the preferred method...

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Page 89: ...s The isolation voltage rating should be at least 1 times the peak input voltage When selecting a CT try to use decade ratios e g 10 1 100 1 etc Decade ratios make for easier power analyzer measuremen...

Page 90: ...be selected 1 times the expected voltage level to allow for high crest factor waveforms The ratio accuracy of PT s is usually about 2 This is quite a bit wider than the accuracy of a digital power ana...

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Page 94: ...for measuring source power The 2300 measures the total of the power dissipated by the load and current shunt The only other source of inaccuracy is the power dissipated in the connecting leads Figure...

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Page 99: ...is usually measured with an external ammeter The 2300 can easily be reconnected to measure the phase B current as well 104 2 Connections The standard 3 phase 3 wire connections are shown in Figure 1...

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Page 102: ...00 Channel A of the 2300 is connected to measure the input power drawn by the transformer Channel C measures the power sourced by the transformer secondary When the 2300 is connected for source power...

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Page 104: ...waveforms The current leads the voltage in a capacitive load while the current lags the voltage in an inductive load When calculating power factor using present Valhalla Scientific digital power anal...

Page 105: ...o Figure 1 1 Connect the 2300 to the load as described in Section 6 2 Measure and record the voltage current and power for A and C 3 Calculate A VA s and VAR s 4 Calculate C VA s and VAR s 5 Add A and...

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Page 107: ...ad resistances are combined and shown as R LEAD x with the x denoting the individual lead Lead resistances 1 and 2 do not contribute any error other than lowering the effective source voltage Lead res...

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Page 112: ...240VAC using single phase three wire power 108 3 2300 Connections Single phase three wire systems may be looked upon as two single phase power measurements The total single phase three wire power is t...

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