Instructions for Use of PW31 Relay Protection Tester

The PW31 Relay Protection Tester is operated by preparing the device, connecting voltage and current terminals, setting test parameters, executing the test, and recording results while following safety precautions.PreparationPower and Grounding: Connect the tester to a 220V AC power supply and ensure the grounding plug is securely connected to prevent electric shock .Visual Inspection: Check the tester for any physical damage, ensure all connections are tight, and confirm the instrument is in good working order .Environment: Clear the testing area of obstacles and avoid strong electromagnetic fields that may interfere with measurements .WiringVoltage and Current Terminals: Identify the color-coded terminals on the tester panel (yellow, green, red, black) and connect them to the corresponding relay coils .Connection Method: Use the open-in-open wiring method as required by the test. Ensure the voltage circuit is not short-circuited and the current circuit load matches the relay's impedance specifications .Verification: Use a multimeter to confirm that all wiring connections are correct before starting the test .Setting Test ParametersVoltage and Current Values: Input the effective values for voltage and current, and set the phase angles for multi-phase tests .AC Quantity Settings: Adjust amplitude, step size, and maximum allowable output for each phase. Configure line voltage and sequence components (zero, positive, negative) as needed .Test Type: Select manual or automatic mode depending on the test requirements .Executing the TestStart the Test: Select the desired test module (e.g., overcurrent, distance, differential) and click Run .Observation: Monitor the relay's response to simulated faults, noting tripping times and behavior .Adjustments: If necessary, modify amplitude steps or test duration to capture accurate relay action times .Output VerificationAC Voltage and Current: After the test, remove the test lines and use a multimeter to measure the output voltage and current to ensure consistency with the set parameters .Result Recording: Document reaction times, tripping characteristics, and any deviations from expected behavior .Ending the TestData Saving: Save the experimental data using the tester's software interface for future reference and compliance .Review and Adjust: Analyze results, make necessary adjustments to relay settings, and repeat tests if required .Safety PrecautionsAlways disconnect the relay's power supply before testing .Ensure reliable grounding to prevent electric shock .Avoid testing in strong electromagnetic fields .Contact the manufacturer if any abnormal behavior occurs during testing . By following these steps, the PW31 Relay Protection Tester can be used effectively for functional, timing, burden, coordination, and accuracy tests on various relay types, ensuring reliable protection system performance .