Model 930A Three Phase Power Analyzer
Model 930A Three Phase Power Analyzer
An economic alternative to Model 931A, this solution features the same ac accuracy as the 931A, serial communication capability for use in power quality trend monitoring, and complete diagnostic capabilities.
Model 929A/930A Manual
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Model 929A/930A/931A Data Sheet
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Model 929A/930A/931A Data Sheet Espanol
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The Arbiter Systems®, Inc. Model 930A Three Phase Power Analyzer is an economical alternative to the Model 931A Power System Analyzer when the dc voltage measurement, transducer calibration and timer features are not required. The Model 930A has the same ac accuracy as the Model 931A with PowerDSA™ Digital Signal Analysis. Basic accuracy of 0.05% of reading and 0.05° phase, harmonic analysis, and full three-phase capability are standard.
The Model 930A includes serial communication capability. Combined with the available application software and a laptop computer, is a valuable tool for use in power quality trend monitoring, as well as being a complete diagnostic tool for use in the substation and industrial power environment.
Model 930A measures all of the basic quantities: true-rms voltage and current, frequency and phase angle, as well as power quantities such as watts (W), watthours (Wh), volt-amperes (VA), volt-ampere hours (VAh), volt-amperes reactive (VAR), volt-amperes reactive hours (VARh), and power factor (PF), all with 0.11% basic accuracy.
Measure harmonics and view the results graphically on the high contrast 240x64 graphic display. The two channels are normalized to Channel 1 fundamental phase, so you can see, for example, the relationship between current waveform distortions and voltage phase.
The 930A include a full three-phase input section, for automated three-phase measurement sequences, complete with multiple display modes (see Key Features tab, below)
- Same high accuracy as Model 930A
- Features PowerDSA™ Digital Signal Analysis
- Complete diagnostic functions for use in substation and industrial power environments
- Serial Communications supports power quality trend monitoring with included software
- Field ready
- Multiple display options including three phase displays
- Basic three-phase display - Voltage, current, phase, frequency and power quantities on one convenient display.
Vector display - view voltages, currents and phase angles with their vector representation.
Voltage/Current Sequence display - view voltage, current and phase along with positive, negative and zero sequence values.
Energy display - view voltage, current, phase, frequency and energy quantities on one convenient display.
Input
Input
| Basic Inputs | Supports two main measurement channels, Channel 1 and Channel 2. Any voltage or current input signal may be selected for either channel. For basic measurements (voltage, current, frequency, phase angle) any combination of inputs may be used. For power and energy measurements (active power, apparent power, reactive power and power factor), one voltage and one current must be selected. For three-phase measurements, the input configuration is selected automatically, based on the measurement type (for example, 3-phase 4-wire 3-element). |
Voltage
| Input Range | 1.5 to 750 Vrms (underrange to 200 mV) |
| Inputs | Four; A, B, C, N |
| Impedance | 1 megohm |
| Leakage | < 3.5 mA per IEC348 and UL1244 |
Current
| Input Range | 0.04 to 20 Arms (underrange to < 1 mA) |
| Inputs | Three; A, B, C, plus synthesized neutral |
| Burden | 0.01 ohm maximum |
| Isolation | Transformer, 1000 Vrms |
| Neutral | Synthesized, -(A+B+C) |
Timer
(Model 931A Only)
Transducer
(Model 931A Only)
Measurements
Voltage and Current
| Method | Wideband: True rms, 3 kHz Bandwidth |
| Accuracy | 0.05% of reading |
| Underrange | < 1% of reading, typical at 0.3 mArms |
| DC Voltage | (Model 931A Only) |
Phase Angle
| Input | Channel 1 to Channel 2 |
| A-B Range | 0 to 360° or ±180° |
| A-B Accuracy | 0.05° |
| Underrange | < 1°, typical at 0.3 mArms |
Frequency
| Input | Channel 1 |
| Range | 20 to 500 Hz (underrange to 5 Hz) |
| Accuracy | 0.005% of reading |
Harmonics
| Input | Channel 1 or Channel 2 |
| Range | 2nd to 50th Harmonic (50 or 60 Hz fundamental) |
| Accuracy | 5% of THD reading + 0.01% |
| Display | THD; K-factor; Amplitude bar graph; and individual harmonic magnitude and phase (simultaneous) |
Waveform Display
Channel 1 and/or Channel 2
Power
| Range | 0 to 99999 MVA or MVAh |
| Accuracy | 0.11% of VA, for VA, VAR, and W, 0.001 PF |
Timer
(Model 931A Only)
Transducer Accuracy
(Model 931A Only)
Interface
Operator
| Display | 240x64 graphic LCD with cold-cathode fluorescent lamp (CCFL) backlight |
| Keypad | 21 function keys plus On/Off |
| Memory | EEPROM (calibration data) |
| Data | Instrument calibration data |
System Interface
| RS-232 | 1200 to 115,200 baud; 7 or 8 data bits; 1 or 2 stop bits; even/odd/no parity |
| Isolation | Optical, 300 Vrms |
Power Requirements
Internal Battery
| Type | Sealed lead-acid |
| Operation | 8 hours typical |
| Charging Time | 8 hours typical; fast + float charge |
General
Physical
| Instrument/Size | 205 x 305 x 225 mm (8 x 12 x 8.75 in.) |
| Weight | 5.8 kg (12.8 lbs), net |
Environmental
| Temperature | Operating: -10° to +50° C |
| Humidity | Noncondensing |
| General | |
|---|---|
| 930Aopt01 | 16 MB memory |
| Included | |
|---|---|
| 812H | Safety Ground Lead |
| CA0019806 | RS-232 Null Modem Cable, DB9F-DB9F, 2 m (6 ft) length |
| PD0024400 | Operation Manual (930, 929) |
| P01-P10 | Country specific power cord with straight female end |
| Available | |
| 09311A | 400 Amp 20:1 Precision CT, 0.1% Accuracy |
| 811AT | 3-Phase Univ. Test Plug Current Lead Set |
| 813AT | 3-Phase Safety Voltage Lead Set |
| 815AT | Model 815 Fused Safety Voltage Probe Lead Set |
| 816AT | 3-Phase Spade-Lug Current Lead Set |
| 817AA | 1-Phase Clamp-On CT Test Lead |
| 817AT | CT Lead Set |
| 818AT | Safety C-Hook Current Lead Set |
| AP0001300 | 1000:1 Clamp-on CT, 1000 A (Current Output) |
| AP0006700 | CT, Clamp-On, 3000 Amp, 660V, Elliptical Opening (Current Output) |
| AP0010200 | CT, Clamp-On, 1000 Amp, 1000:5,Elliptical Opening (Current Output) |
| AP0010300 | 100:1, 600 Amp rms, Clamp-On, CT (Current Output) |
| AP0012800 | 1000:1, 200 Amp rms, Clamp-on CT |
| AP0012900 | 250:5, 500:5, 1000:5, 1000 Amp rms, Clamp-on CT |
| AS0035901 | Adjustable Tilt Handle/Bail Assembly |
| AS0036000 | 400 Amp CT Bracket (each) |
| AS0060000 1 | PowerCSV Application Software for Models 931A and 930A |
| AS0079001 | Universal Test Plug Current Shunt, A Phase Red |
| AS0079002 | Universal Test Plug Current Shunt, B Phase Yellow |
| AS0079003 | Universal Test Plug Current Shunt, C Phase Blue |
| AS0079030 | Universal Test Plug Current Shunt, Set of Three |
1 Available via download only
PowerCSV - (931/930 with memory option)
2.001 28Apr2009
Current
Common Controls Update for PowerCSV
04Oct2002
Current
Requires an EPROM UPDATE: Contact Tech Support to request upgrade.
This update supports Models 929, 930 and 931, all versions.
10Feb2010
1) Bug 599: Problems erasing single log file
2) Update RS232 output to replace Null (0x00) bytes with space (0x20)
