Item

Test items

Standard

Test result

Remarks

12/20KV silicone rubber cold shrinkable indoor/outdoor termination kit/middle joint

AC withstand for 1min

55kV ,1min no flashover, no breakdown

55kV,1min no flashover, no breakdown

OK

Partial discharge test

18kV, discharge≤20pC

OK

Heating cycles voltage test in air

3 cycles at 5h heat,3h cooling, conductor temperature 95°C during heating

Subjected to 3 cycles in air at the conductor temperature 95°C

Remarked by the next test

Partial pressure test

18kV,discharge ≤20pC

OK

Impact pressure test

125kV,15min,10times allow flashover once, but don’t count into toal number

125kV, no flashover, no breakdown

OK

Cathode D.C. test

72kV,15min,no flashover, no breakdown

72kV,15min,no flashover, no breakdown

OK

4h frequency voltage test

48kV,4h no flashover, no breakdown

48kV,4h no flashover, no breakdown

OK