portable kwh meter test bench

Detailed Product Description

Three Phase Energy Meter Portable Test Equipment

(With Voltage source and Current Source)

1.      Brief Introduction:

three-phase portable test equipment with current and voltage source is an ideal device to test all kind three-phase energy meters accuracy below 0.2, especially for testing un-installed meters on site. The equipment can generate 3-phase voltage, 3-phase  current and any power factor signal, the standard meter inside the equipment is class 0.05.

The equipment is box structure, light, and easy to carry, it is very convenience to test meters on site, moreover the equipment can be used for repair meter in meter manufacture and as testing equipment in R&D institute.

2.      Advantages:

a.       Displays of vector diagram for analysis of the supply conditions.

b.      DDS technology signal generator:

The signal generator adopts digital sine wave composing technology. The signal generator can trace the voltage phase and supply a dummy load to the tested meter by outputting adjustable current with different phase ;

c.       High efficiency D-Class current amplifier and voltage amplifier:

The equipment adopts PWM power amplifier(or we called D-Class amplifier), which is high efficiency (>85%) and very low heat consumption. The amplifier  has  protect function ,it can avoid damage due to wrong connection or other manual operations. Current amplifier and output shifter can output different current; Voltage amplifier can output different voltage;

d.      Large LCD screen display.

3.     Main specification:

Power and consumption:

Power supply: 1P2W  220V ±10%,  50Hz or 60Hz;

Max. consumption: 300VA

Current source:

Output current:    3×0. 1A-3×100A

Adjusting resolution:   0.01% (min. 0.0001A)

Power factor:   0~360⁰; resolution: 0.1⁰

Output frequency:   45Hz~65Hz;

Distortion(sine wave output):  <0.5%

Current stability of power source during sine wave output:

0.05% (180s)

              Output wave:  sine wave

                           2-21 harmonic wave, total should be less than 40%

                           Odd harmonic waveform

                           Sub harmonic waveform

              Output capacity:   50VA per phase              

              

Voltage source:

Load:  The Load can be resistor / inductive / capacitance(<4uF)

Adjusting resolution:   0.01% (min. 0.1V)

Output frequency:   45Hz~65Hz;

Distortion(sine wave output):  <0.7%

Voltage stability of power source during sine wave output:

0.05% (180s)

              Output wave:  sine wave

                           2-21 harmonic wave, total should be less than 40%

                           Odd harmonic waveform

                           Sub harmonic waveform

              Output capacity:   50VA per phase

Build in Reference Meter:

Voltage range:  3×30V-3×300V (AC)

    Current range:  3×0.001A-3×100A (20/100A current clip) (AC)

Accuracy:

Active power    0.05%  (PF>0.5)

          Reactive power  0.1%   (PF>0.5)

Warm up time:  < 2 minutes

Build in Error Calculator:

Impulse of tested meter could be:  TTL / OC / Optical head

     Max. frequency of  impulse could be:  200Hz

    Error display range:  0.001%-99.99%