Test Bench

Test bench
The bench accords with the standard of IEC 60736: 1982 testing equipment for electrical energy meters, IEC 62053 Can be used to test single phase energy meter (up to 0.5 class)

Type of test
warm up test
starting test
no load test(creep test)
error test(accuracy test)
dial test
Influence quantities test
test of repeatability of the measurements

Feature
Different constant energy meter can be tested at one time.
Voltage is isolated by MSVT(multi secondary voltage transformer)output, which suits for the voltage/current close-link test of signal phase energy meter
The test bench can be installed scanning and offer 3 ranges adjustment.
Accepted the signal for both round-style energy meter and digital LED energy meter.
Operated by keyboard or PC which is very convenient.
Using the testing software complied with WINDOWS98/2000/XP which can auto-testing different energy meters. The software can realize the data from energy meter for statistics, search and management.
The energy meter hanging rack is made by Aluminum compound. The whole device configuration is a reasonable design and nice outfit

Specification and parameter
The test bench accuracy class: 0.1/0.2 class
Reference standard energy meter:
HC 3801 single phase reference standard energy meter
Accuracy class: 0.05 /0.1
Standard CT(current transformer) class: 0.01/0.02
MSVT(multi secondary voltage transformer) class: 0.02
Primary voltage: 180-300V (Normal Voltage: 240V)
Secondary voltage: 180-300V
Secondary VA rating: 15VA per winding
Insulation secondary to secondary: 500V, 50Hz, 60 seconds
Primary to secondary ratio accuracy: +-0.1% (typical)
Secondary to secondary ratio accuracy less than: +-0.02%
Secondary to secondary phase angle accuracy less than +-1 minute
Number of secondary output: 8~60channel
Voltage amplifier:
Output voltage range: 50-288V;
Output maximum power: 800VA
Resolution: 0.01%;
Stability: better than 0.05%/3 min(time base 5S);
Distortion factor: < 0.5% at linear load;
Frequency range: 45Hz~65Hz;
Power efficiency: more than 85%;
Ambient temperature: 10~ 50
Electronic overload and short-circuit protection.
Current amplifier:
Output current: range: 1mA~120A (option for 1mA~200A);
Output maximum power: 1500VA
Resolution: 0.01%;
Stability: better than 0.05%/3 min(time base 5S);
Distortion factor: < 0.5% at linear load;
Frequency range: 45Hz~65Hz;
Power efficiency: greater than 85%;
Ambient temperature: 10~50
Electronic overload protection and security for open current circuit.
Phase Angle: 0~360, resolution of phase angle setting: 0.1;
Output frequency range: 45Hz~65Hz; resolution: 0.01Hz
Output stability of power: <0.05% (180S)
Numbers of calibrated energy meter: 24 (6/12/24/32/40/48 on requested)
Input power: 220/240V 15%, 50/60Hz; power consumption: Max. 2500VA