Project	Test Items	Standard requirements	Test Results	Conclusion
24KV Silicone Rubber Cold Shrinkable Indoor/External Terminal Head/Intermediate Head	1min power frequency withstand voltage test	55kV, 1min no flashover, no breakdown	55kV, 1min, each phase of the combined sample is not flashover, not breakdown	Pass
	Partial discharge test	18kV discharged power ≤ 5pc	18kV discharged power ≤ 5pc	Pass
	Load cycle test	The conductor is heated to 95 ℃, each cycle is 8h, of which heating is 5h and cooling is 3h, a total of three cycles	Complete three load cycle tests as per standard requirements	Evaluated by the following tests
	Partial discharge test	18kV discharged power ≤ 5pc	18kV discharged power ≤ 5pc	Pass
	Lightning impulse voltage test	± 125kV, positive and negative polarities 10 times respectively, no breakdown, no flashover	± 125kV 10 times each, each phase of the combined sample has no flashover and no breakdown	Pass
	Negative polarity 15min DC withstand voltage test	72kV, 15min no flashover, no breakdown	72kV, 15min, each phase of the combined sample has no flashover and no breakdown	Pass
	4h power frequency withstand voltage test	48kV, 4h no flashover, no breakdown	48KV, 4h, each phase of the combined sample has no flashover and no breakdown.	Pass