3 Phase Energy Meter Portable Calibrator for Laboratory Use Three Phase Kwh Meter Test Bench

 

1. Device level: 0.05 level
2. Computer online port: RS232 communication port
3. Technical parameters of three-phase source:
1) Output voltage:
3 * 57.7V Y 3*100V
3 * 220V Y 3*380V
2) Adjustment range: 0-120% continuously adjustable
3) Adjust fineness: better than 0.01%
4) Output current: 25mA, 0.1A, 1A, 5A, 25A, 100A
5) The adjustment range is continuously adjustable from 0 to 120%; Adjust the fineness to be better than 0.01%
6) Minimum output current: 1mA (accuracy:<5%)
7) Output power: (voltage circuit) 3 × 50VA; (Current circuit) 3 × 150VA
8) Output voltage, current, power stability: ≤ 0.02%/120S
9) Output voltage and current waveform distortion: ≤ 0.5%
10) Three phase symmetry: better than 120 ° ± 0.3 °
11) Frequency range: 45Hz~65Hz Adjustment fineness: 0.01Hz
12) Phase shift range: -180.0 °~180.0 ° Adjustment fineness: 0.01 °
13) Indicator level: The accuracy of voltage and current meters is ± 0.01%; The accuracy of the phase meter is 0.01 °; The accuracy of the frequency meter is ± 0.01Hz
4. Technical parameters of built-in three-phase standard meter:
1) Voltage input
Input range (V): 40-480
Input range (V): 60, 120, 240, 480
Overload capacity (V): 600
Input load: ≤ 0.5mA (480V)
2) Current input
Input range (A): 0.01~100
Input range (A): 100, 50, 25, 10, 5, 2.5, 1, 0.5, 0.25, 0.1, 0.05, 0.025
Overload capacity (A): 150
3) Accuracy
Accuracy level: 0.05 level (0.1A~120A)
Accuracy of power measurement
a. Accuracy of active power measurement: 0.05%/0.1% (PF ≥ 0.5)
b. Reactive power measurement accuracy of 0.1% and 0.2% (PF ≥ 0.5)
Accuracy of electric energy measurement
a. Accuracy of active energy measurement: 0.05%, 0.1% (PF ≥ 0.5)
b. Reactive power measurement accuracy of 0.1% and 0.2% (PF ≥ 0.5)
5. The device has complete protection functions: voltage short circuit protection, current open circuit protection, and load overload protection; Monitor overvoltage protection.
6. It can conduct 2-21 harmonic tests, voltage interruption and drop tests, and the harmonic amplitude can be adjusted.
7. Power supply: 230V ± 10%~50Hz.
8. Maximum power consumption: 300VA.
9. Working environment: Temperature of 20 ºC to 5 ºC, relative humidity ≤ 85%.

1. Instrument features
1) Adopting a meter source integrated structure, it is equipped with a 0.05 level three-phase wide range multifunctional digital standard meter, which can read various electrical parameters of the standard meter through software.
2) Adopting DDS technology, 36000 point waveform synthesis technology, large-scale CPLD and 32-bit embedded system, the signal source has the characteristics of high output stability, small adjustment fineness, and low distortion.
3) A 7-inch color touch LCD screen with RAM system, capable of displaying multiple information including three-phase voltage, current, active power, reactive power, and apparent power; It can also display functions such as power vector diagram and waveform analysis diagram.
4) Adopting a small and efficient PWM digital amplifier with an efficiency of over 90% and a carrier frequency of 300KHz, it has the advantages of low distortion, low heat generation, and high efficiency.
5) It has complete protection functions, including voltage short circuit alarm, current open circuit and overload alarm.
6) Built in high stability constant temperature crystal oscillator, outputs 500KHz high-precision pulses, can test the clock of the electric energy meter, and with the help of calibration management software, can test daily timing errors, time period switching errors, etc. (Optional function)
7) Configure 485 communication interface to test various communication tests of multifunctional electric meters. (Optional function)
8) It can automatically calibrate the energy meter according to the built-in regulations without a computer, and can save data from more than 10000 meters.
9) Configure a USB interface that can automatically upgrade programs through a USB flash drive; You can also export saved data; External mouse allows direct operation of the device.
 
2. Main functions
1) Stealth test
2) Start up test
3) Basic error
4) Harmonic function
3. Multi functional test (requires cooperation with management software)
1) Impact test
2) Indication error
3) Daily timing error
4) Maximum demand error
5) Consistency check of communication protocol
6) Time slot switching error
Configuration List
1. Built in error handling system
Host: 1
3 watch racks: 1
100A current line: 6
Voltage line: 3
Pulse line: 3
RS232 computer connection cable: 1
Standard table pulse output line: 1 (for inspection)
 
2. External error handling system
Host: 1
3 watch stands: 1 (vertical watch stand)
485/Clock communication line: 3
Pulse line: 3
RS232 computer connection cable: 1