in the EPRP-605 ?

Relay Protection Tester

Main Features:

Flexible combination of voltage and current output
Six phase voltage and six phase current can be output, which has made it is possible to be any combition, such as the output mode of the combination of conventional four phase current and three-phase current, six phase voltage mode, six phase current mode and 12 phase output mode. It not only can be compatible with the traditional way of various tests, but also can conveniently carry out differential test of three-phase transformer.

Operation mode
The device is directly connected with a computer or a desktop computer, which is convenient and efficient and stable performance.

A new hi-fi linear power amplifier
The output port has always insisted on using the modular linear power amplifier instead of the switching power amplifier, which has the high fidelity and high reliability function and excellent performance. High-mid frequency will not be produced to disturb the test, also ensure the smoothing accuracy of waveform produced by the whole course of the high current to the tiny current is excellent.

High performance Mainframe
The output part adopts DSP control, which has fast operation, real-time digital signal processing capability, wide bandwidth and high-resolution D/A conversion control. The output waveform has the features of high precision, small distortion and good linearity. With using many advanced technology and precision components and materials and the structure of professional design, the device has the features of small volume, light weight, full function, easy to carry, boot can work, flow test is very convenient.

Powerful software function
It can complete all kinds of high automatic validation work which is large and complex. It can also conveniently test and scan protection setting, playback of fault, real-time store test data, display vector, online print report and so on. Besides, six-phase current can facilitate the test of three-phase differential protection.

Independent DC power output
An 110V and 220V adjustable DC power is designed to supply output.

Complete interface
The device with USB communication port can communicate with the computer and other external devices.

Perfect self-protection function
With reasonable design of the heat dissipation structure and the reliable and perfect hardware protection measures, it has the power soft start function and the software of the fault self-diagnosis and the output latch function.

Nominal Parameter:
  • Parameter
Current channel number Standard six phase
Voltage channel number Standard six phase
AC current output range 30A / phase or 180A (six phase parallel)
DC current output range 10A DC /phase
AC voltage output range 120V AC /phase
DC voltage output range 160V DC / phase

  • Nominal parameter
AC current output
The each phase output when six phase current output (RMS): 0~30A output precision 0.1 grade
The each phase output when three phase current output (RMS): 0~60A
The six phase parallel current output(RMS): 0~180A
The allowed working value when the phase current work long time (RMS): 10A
The maximum output power of phase current 450VA
The maximum output power when six phase parallel current output 1000VA
The allowed working time when six phase parallel current maximum output 10s
Frequency range(fundamental wave) 0~1000Hz
Harmonic order 0~20

DC current output
Current output 0~±10A / phase output precision 0.2 grade
The maximum load voltage output 20V

AC voltage output
Phase voltage output RMS value: 0~120V output precision 0.1 grade
Line voltage output RMS value: 0~240V
The output power of phase voltage/ line voltage: 80VA / 100VA
Frequency range(fundamental wave): 0~1000Hz
Harmonic orders: 0~20

DC voltage output
The output amplitude of phase voltage: 0~±160V output precision 0.2 grade
The output amplitude of line voltage: 0~±320V
The output power of phase voltage/ line voltage: 70VA / 140VA

Input and output
On-off input 8 channels
Idle contact 1~20mA,24V
Electric potential contacts “0”:0 ~ +6V; “1”:+11 V ~ +250 V
4 channels output DC:220 V/0.2 A;AC:220 V/0.5 A

Time measurement range
0.1ms ~ 9999s, measurement accuracy <0.1ms