GIS Partial Discharge Withstand Voltage Acceptance Test | Test Precautions?

GIS Partial Discharge Withstand Voltage Acceptance Test / GIS Withstand Voltage Test Equipment -- Test Precautions? The GIS withstand voltage test is a crucial step in verifying its insulation performance, and its operation requires meticulous attention. The following are the main precautions:

I. Pre-Test Safety Confirmation

1. Complete Isolation: Ensure complete isolation of the GIS from all possible power sources. Connect grounding wires and set up safety barriers and warning signs.

2. Internal Cleanliness and Dryness: Confirm that the SF6 gas pressure and moisture content in the GIS chamber are within acceptable limits. Ensure internal cleanliness to prevent discharge caused by impurities or moisture.

3. Equipment Grounding: The test equipment (especially the high-voltage output end) and the GIS casing must be reliably grounded, and the grounding resistance must meet requirements.

II. Standard Operating Procedures During the Test

1. Correct Wiring: Check that the wiring is correct and ensure that the voltage is applied between the phase and ground. The CT secondary side must be short-circuited to ground, and the VT secondary side must be disconnected.

2. Coordinated Monitoring: The voltage increase process should be monitored, commanded, and operated by designated personnel, and an emergency stop button should be provided. Unauthorized personnel are strictly prohibited from entering the test area.

3. Smooth Voltage Increase: Increase the voltage at a uniform rate, closely monitoring instrument readings and site conditions. If abnormal sounds, indicator fluctuations, or breakdown occur, immediately reduce the voltage and shut off the power.

4. Complete Discharge: After the test, a dedicated discharge rod must be used to thoroughly discharge the test sample and the high-voltage end.

III. Handling Abnormal Situations

• In the event of flashover or breakdown, record the fault phenomena and relevant data. Thoroughly discharge the GIS before proceeding with troubleshooting. Approaching the equipment without discharging is strictly prohibited.

Summary: Safety is paramount. Strict adherence to procedures, thorough preparation, and focused attention during the process are essential to ensure test safety and valid results. The MSGTU GIS withstand voltage testing equipment is suitable for insulation withstand voltage tests, partial discharge tests, and accuracy tests of GIS transformers for high-voltage, high-capacity GIS and GIL power equipment. It is an essential device for preventative and factory tests by GIS substations, GIS and GIL power equipment manufacturers, and manufacturers of pot-type insulators and insulating structural components.

Adding a high-voltage bushing interface to this equipment allows for the extraction of high voltage, enabling various high-voltage tests on traditional high-voltage equipment.

GIS withstand voltage test chamber, GIS partial discharge-free test equipment, GIS withstand voltage test laboratory, GIS withstand voltage test equipment, GIS partial discharge-free test device, GIS partial discharge monitoring system, GIS partial discharge-free withstand voltage acceptance test, SF6 insulating gas type high-voltage partial discharge test