3-Current 4-Volage Small Structure Protective Relay Test Set , Three Phase Relay Test Set Large TFT Screen

Performance characteristics

1. Flexible combination of voltage and current output: output up to 4-phase voltage and 3-phase current, can be arbitrarily combined to achieve conventional 4-phase voltage and 3-phase current mode output, which can not only be compatible with traditional test methods, but also be convenient for three-phase transformer differential test and auxiliary power quick-cut and standby self-switching test.

2. Operating mode: The device is directly connected to a laptop or desktop computer for operation, which is convenient, fast and stable.

3. New type of high fidelity linear power amplifier: the output terminal has always insisted on the use of high fidelity, high reliability modular linear power amplifier, rather than switching power amplifier, with excellent performance. It will not cause high and intermediate frequency interference to the test site, and ensures good waveform smoothing accuracy throughout the whole process from large current to small current.

4. High performance host: The output part is controlled by DSP, which has fast operation speed, strong real-time digital signal processing ability, wide transmission bandwidth and high resolution D/A conversion. The output waveform has high precision, small distortion and good linearity. A large number of advanced technology and precise component materials are adopted, and the specialized structure design is carried out. Therefore, the device is small in size, light in weight, full in function, easy to carry, and can work on start-up and flow test is very convenient.

5. The software has powerful functions: it can complete all kinds of large-scale and complex checking work with high automation, test and scan all kinds of protection settings conveniently, perform fault playback, store test data in real time, display vector diagram, print report online, etc. It is convenient to test three-phase differential protection.

6. It has an independent special DC power supply output: it has a 110V and 220V special DC power supply output.

7. Complete interface: The device has a USB communication port, which can communicate with computers and other external devices.

8. Perfect self-protection function: reasonable heat dissipation structure design, reliable and perfect hardware protection measures, power supply soft start function, software self-diagnosis of faults and output locking function.

Technical Indicators

1. AC Current Output

1) Output accuracy: 0.2 level

2) Phase Current Output (RMS): 0-40A

3) Triple Current Output (RMS): 0-120A

4) Long-term allowable operating value of phase current (RMS): 10A

5) Maximum output power of phase current: 420VA

6) Maximum output power at maximum output of Three-parallel current: 900VA

7) Permissible working time for maximum output of triple-parallel current: 10s

8) Frequency range (fundamental wave): 20-1000Hz

9) Harmonic frequency: 1-20 times

2. DC Current Output

1) Output accuracy: 0.2 level

2) Current output: 0 ~+10A/phase, 0 ~+30A/triad

3) Maximum output load voltage: 20V

3. AC Voltage Output

1) Output accuracy: 0.2 level

2) Phase Voltage Output (RMS): 0-120V

3) Line Voltage Output (RMS): 0-240V

4) Phase/Line Voltage Output Power: 80VA/100VA

5) Frequency range (fundamental wave): 20-1000Hz

6) Harmonic frequency: 1-20 times

4. DC Voltage Output

1) Output accuracy: 0.2 level

2) Phase Voltage Output Amplitude: 0~160V

3) Line Voltage Output Amplitude: 0~320V

4) Phase/Line Voltage Output Power: 70VA/140 VA

5. Switching Volume and Time Measurement

6. Volume weight