The Automatic Insulation Gloves/Boots Test Set under Wuhan UHV can help many power workers conduct various power tests more conveniently.
After completing a voltage withstand test for insulating boots (gloves), the test equipment and samples must be fully discharged in strict accordance with safety regulations to eliminate residual charges and prevent electric shock. Below are the standardized operating procedures and precautions:
Standard Discharge Procedure
1.Cut Power and Allow Standing
After the test, first de-energize the high-voltage output (turn off the test bench power or press the stop button), and disconnect the input power to the test transformer.
Let the equipment stand for 10–15 seconds to allow natural dissipation of internal charges (especially for insulating boots/gloves with high capacitance).
2.Discharge Using a Dedicated Discharge Rod
Wear insulating gloves and hold a grounded discharge rod (connected to ground via a resistor, typically 1kΩ–10kΩ/watt).
Securely connect the grounding end of the discharge rod to a grounding stake (grounding resistance ≤4Ω).
Slowly approach the high-voltage electrode or sample connection point until the rod tip makes contact. Maintain contact for 5–10 seconds until no discharge sounds/sparks are observed.
Discharge at multiple points on the sample (e.g., inside/outside of boot shafts, fingertips of gloves) to ensure no residual charge remains.
3.Direct Short-Circuit Grounding (Optional)
If the equipment design permits, use a grounding switch to directly short-circuit the high-voltage output to ground for ≥30 seconds.
4.Verify Discharge Effect
Use a high-voltage tester to check for absence of voltage near the sample (the tester must be pre-verified as functional).