Model 930A Three Phase Power Analyzer - DISCONTINUED
Model 930A Three Phase Power Analyzer - DISCONTINUED
An economic alternative to Model 931A. Featuring the same ac accuracy as the 931A, serial communication for 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 Español
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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 Vrms 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 Arms 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 Hz 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 Hz or 60 Hz fundamental) |
| Accuracy | 0.01 % THD + 5 % of reading |
| 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 MVA or MVAh to 99999 MVA or MVAh |
| Accuracy | 0.11 % of VA, for VA, VAR, and W |
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 baud 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 mm x 305 mm x 225 mm (8 in x 12 in x 8.75 in) |
| Weight | 5.8 kg (12.8 lbs), net |
Environmental
| Temperature | Operating: - 10 °C to + 50 °C |
| Humidity | Noncondensing |
| Included | |
|---|---|
| 812 | Safety Ground Lead |
| AS0094100 | Operation Manual (929/930) |
| CA0019806 | RS-232 Null Modem Cable, DB9F-DB9F, 2 m (6 ft) length |
| P09R | Power Cord, North America, Right Angle |
| Available | |
| 09311A | 400 A 20:1 Precision CT, 0.1 % Accuracy |
| 811AT-8 | 3-Phase Univ. Test Plug Current Lead Set |
| 813AT-8 | 3-Phase Safety Voltage Lead Set |
| 815AT-8 | Model 815 Fused Safety Voltage Probe Lead Set |
| 816AT-8 | 3-Phase Spade-Lug Current Lead Set |
| 817AA-8 | 1-Phase Clamp-On CT Test Lead |
| 817AT-8 | 3-Phase Clamp-On CT Lead Set |
| 818AT-8 | 3-Phase Safety C-Hook Current Lead Set |
| 819xyz-8 | Modified Safety Clip Lead Set |
| 841A | Series Test Jack Isolator Paddle |
| 842A | Three - Series Test Jack Isolator Paddles with 60 cm Nylon Cord |
| 842B | Four - Series Test Jack Isolator Paddles with 60 cm Nylon Cord |
| AP0001300 | 1000:1 Clamp-on CT, 1000 A (Current Output) |
| AP0012800 | 1000:1 Clamp-on CT, 200 A, 1 mA/A (100 mA @ 100 A ac) |
| AS0035901 | Adjustable Tilt Handle/Bail Assembly |
| AS0036000 | 400 A 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 |
| CN0030500 | Adaptor Banana Shielded - Red |
| CN0030501 | Adaptor Banana Shielded - Black |
| P01R-P10R | Country specific power cord with right angle female end |
1 Available via download only
| Click to Download Latest Version of Software | |
|---|---|
| 930/31_PowerCSV_14Oct2010_2002 | For Models 930 and 931 - requires memory option |
| 930/31_PowerCSV_SHA256_14Oct2010_2002 | 930/31_PowerCSV SHA256 checksum |
| Tera Term_01Jan2010_23 | Terminal program that can capture data from Models 930A and 931A. Also, can program the Satellite Clocks via serial commands. Modern version is available from their website: https://teratermproject.github.io/index-en.html |
| Tera Term SHA256_01Jan2010_23 | Tera Term SHA256 checksum |
Software Version and Related Information
Common Controls Update for PowerCSV
04Oct2002
Current
PowerCSV for Models 930 and 931 (930/31_PowerCSV)
| Version | Rev Level | Version Notes |
|---|---|---|
| 14Oct2010 | 2.002 |
|
| 28Apr2009 | 2.001 |
|
930/31_PowerCSV_SHA256
| Version | Rev Level | Version Notes |
|---|---|---|
| 14Oct2010 | 2.002 |
Terminal Emulation Program (Tera Term)
Free software terminal emulator (communications program) for Microsoft Windows.
- Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows.
- Supports VT100 emulation, telnet connection, serial port connection, etc.
Tera Term SHA256
| Firmware Information (EPROM based firmware is not available for download) | |
|---|---|
| 929/30/31_Firmware_05Dec2018 | Requires an EPROM update from Arbiter. The same update works for Models 929, 930 and 931. |
Firmware Version and Related Information
EPROM update (929/30/31_Firmware)
| Version | Rev Level | Version Notes |
|---|---|---|
| 05Dec2018 | Updates are not security related.
|
|
| 13Jul2018 | Updates are not security related.
|
|
| 08Dec2010 |
|
|
| 10Feb2010 |
|
App Note 110: Measuring Low-Level Signals w/Model 931A
Download application_note_110.pdf (25 kB) »
App Note 113: Using Clamp-On Current Transfomers (CTs) with Arbiter Power Analyzers
Download application_note_113.pdf (89 kB) »
Logging Files from the Model 931A Power System Analyzer
Download pd0044600_logging_931_930_data_with_teraterm.pdf (142 kB) »
Model 09311A 400 Amp Auxiliary Current Transformer
Download 09311a.pdf (252 kB) »
Model 09311A 400 Amp Auxiliary Current Transformer Español
Download 09311a_ct_espanol.pdf (125 kB) »
Overview Presentation of Model 931A Power System Analyzer
Download 931a_seminar.pdf (732 kB) »
Sealed Nickel-Metal Hydride cells (MSDS)
Download sealed_nickel-metal_hydride.pdf (558 kB) »
