Single Phase Meter Test Bench
● PWM (Pulse width modulation) technology
● Modular design allows customized configurations on hardware and software, customer-friendly
● Perform all tests like creep test, starting test, basic errors, dial test, standard deviation and etc...
● Measurement of voltage, current, power (active, reactive, apparent), phase angle and frequency with real time display of vector diagram
● Harmonic test (2-21 times) and analysis & display of harmonic
● Able to test all types of single phase mechanical meters and electronics meters, able to test close-link meter, able to test meters with RF communication module with protocol provided by end user
● Mode of tests: Fully-automatic, or manual operate by touch screen
● There are error calculation reset buttons in error testing panel of each meter position; error of each meter is shown on LED display timely.
● Quick connector device (QCD) for quick connect the meters on the rack
● Soft start/stop output voltage/current
Accuracy Class:
Class 0.1 with SRM class 0.05; Class 0.05 with SRM class 0.02
Output Current:
Adjustment range: 1mA~ 120A (or customer requirement)
Resolution: 0.01%
Distortion: ≤ 0.5%
Accuracy & Stability: ≤ 0.05%
Capacity: ≥ 50VA/position (depend on positions quantity)
Output Frequency
Adjustment range: 45Hz ~ 65Hz
Resolution: 0.01Hz
Output Voltage:
Adjustment range: 0 ~ 288V (or customer requirement)
Resolution: 0.01%
Distortion: ≤ 0.5%
Accuracy & stability: ≤ 0.05%
Capacity: ≥ 25VA/position (depend on positions quantity)
Output Phase Angle:
Adjustment range: 0° ~ 360°
Resolution: 0.01°
Others
Time base: 1 ~ 9999s
Insulation between Voltage circuits vs. Current circuit, between circuits vs. Earth: ≥ 5MΩ
Power supply: 220V or 3×220V/380V±10%, 50/60Hz±10%
Ambient conditions: Temperature 50C ~ 400C
Relative humidity: up to 90%
Configurations
1. Single phase Power source (PS)
2. Single phase Standard reference meter (SRM), class 0.05 (or class 0.02 or 0.1 on demand)
3. The Rack
● Number of positions: Customizing on demand by end-user (6, 10, 12, 20, 24, 30, 48 …positions)
● Each rack equip 1 emergency STOP switch
● Each posistion consist of: 1 QCD 3 pins + 1 scanning head + 1 meter clamping + 1 RS/232or485 communication port + 1 error display + 1 RESET button + 1 Set of voltage cable
● Short connection cables over empty positions 4. PC Control software 5. Manual control by touch screen 6. Optional
● MSVT (Multi-secondary voltage transformer) purpose to test the meters with close-link circuit
- Accuracy class: 0.01%
- Ratio: 1:1
- Nominal Input/Output voltage: 220V
- Maximum Input/Output voltage: 300V
- Number of secondary: Equal to number of positions
● Personal Computer
● Printer
