Specification :

Detail: Features

1) The bench accords with the standard of IEC 60736: 1982 testing equipment for electrical energy meters, IEC 62053

2) The bench can be used to test single phase energy meter ( up to 0.5 class)

3) The bench can do warm up test, starting test, no load test( creep test) , error test( accuracy test) of the measurements.

4) The bench is using the PWM, technology to amplify voltage/ current output, the high efficiency at > 85% , and lower the heat. The PWM can check the malfunction checking, preset, alarm, and protection.

5) The signal source is using the newest digital controlled sine wave technology for frequency, amplitude and phase adjust.

6) The bench is using comparison technology to test the error of energy meters.

7) The bench is using the error processor system to calculate the error of each energy meter by the sub-error system which can be connected by the internal RS485.

8) Different constant energy meter can be tested at one time.

9) Voltage is isolated by MSVT( multi secondary voltage transformer) output, which suits for the voltage/ current close-link test of signal phase energy meter

10) The test bench can be accepted the signal for digital LED energy meter.

11) The bench can choose to operate by keyboard which is very convenient. The working status of bench can be seen very clear and easy operation.

Technical Specification

1) The test bench accuracy class: 0.1/ 0.2 class

2) Reference standard energy meter:

HY 5101C-22 single phase reference standard energy meter

Accuracy class: 0.1

3) MSVT( multi secondary voltage transformer) class: 0.01/ 0.02

Secondary voltage: 180-300V

Secondary VA rating: 15VA per winding

Insulation secondary to secondary: 500V, 50Hz, 60 seconds

Secondary to secondary ratio accuracy less than0.01%

Secondary to secondary phase angle accuracy less than 1 minute

Number of secondary output : 8~ 60channel

4) Voltage amplifier:

Output voltage range: 0-275/ 300V;

Output maximum power: 100VA

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.

5) Current amplifier:

Output current: range: 1mA~ 120A;

Output maximum power: 300VA

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.

6) Phase Angle: 0~ 360 , resolution of phase angle setting: 0.1;

7) Output frequency range: 45Hz~ 65Hz; resolution: 0.01Hz

8) Output stability of power: