Model 929A Three Phase Power Meter

Model 929A Three Phase Power Meter

Featuring high accuracy and a complete suite of power and quantity measurement functions, Model 929A is the clear choice as a complete diagnostic tool in industrial power environments.

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 929A Three Phase Power Meter is an economical alternative to both the Model 931A Power System Analyzer and the Model 930A Three Phase Power Analyzer when serial communication, dc voltage measurement, transducer calibration and timer features are not required. The Model 929A has the same ac accuracy as the Model 931A with PowerDSA Digital Signal Analysis, and is a complete diagnostic tool for use in the substation and industrial power environment.

Model 929A 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 929A 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 Models 931A and 930A
  • Features PowerDSA Digital Signal Analysis
  • Complete diagnostic functions for use in substation and industrial power environments
  • 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

Configuration Note

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
Phase-to-Phase
Phase-to-Neutral
Phase-to-Synthesized Neutral (A+B+C / 3)

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
Narrowband: Fundamental magnitude

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

2nd to 50th Harmonic (50 Hz or 60 Hz fundamental)

Accuracy

5 % of THD reading + 0.01 %

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
± 99999 MVAR or MVARh
± 99999 MW or MWh
± 1.0000 PF, lead or lag

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

Serial

(Models 930A and 931A Only)

Memory

EEPROM (calibration data)
Battery backup RAM (setup and stored results)
Real-time clock

Data

Instrument calibration data
User setups (up to six)
Logged data (15 to 200); time-tagged

System Interface

RS-232

(Models 930A and 931A Only)

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)
483 mm x 483 mm x 483 mm (16 in x 16 in x 16 in), shipping

Weight

5.8 kg (12.8 lbs), net
8.2 kg (18 lbs), shipping

Environmental

Temperature

Operating: - 10 °C to + 50 °C
Nonoperating: - 40 °C to + 75 °C

Humidity

Noncondensing

There are no additional Options available for this product.
Included
812H-8 Safety Ground Lead
AS0094100 Operation Manual (930, 929)
P09R Power Cord, North America, Right Angle
Available
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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)
AP0010300 100:1, 600 A rms, Clamp-On, CT (Current Output)
AP0012800 1000:1, 200 A rms, Clamp-on CT
AP0012900 250:5, 500:5, 1000:5, 1000 A rms, Clamp-on CT
AS0035901 Adjustable Tilt Handle/Bail Assembly
AS0036000 400 A CT Bracket (each)
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
No software downloads available for this product
 
No additional software information is available for this product
Firmware Information (EPROM based firmware is not available for download)
929/30/31_Firmware_08Dec2010 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)

VersionRev LevelVersion Notes
08Dec2010
  1. Fixed: CT/PT scale factors were enabled upon setting factory defaults. (Reference BZ642)
10Feb2010
  1. Problems erasing single log file. (BZ 599)
  2. Update RS232 output to replace Null (0x00) bytes with space (0x20)

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) »

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 (73 kB) »

Overview Presentation of Model 931A Power System Analyzer
Download 931a_seminar.pdf (732 kB) »

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phone
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email
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