Conductor cross-sectional area (mm²)

Design serial number

25-50

1

70-120

2

150-240

3

300-400

4

500

5

630

6

800

7

1000

8

1200

9

1400

10

1600

11

1800

12

2000

13

Project

Test Items

Standard requirements

Test Results

Conclusion

8.7/15kV Silicone Rubber Cold Shrinkable Indoor/External Terminal/Intermediate Terminal

1min power frequency withstand voltage test

45kV, 1min no flashover, no breakdown

45kV, 1min, each phase of the combined sample has no flashover and no breakdown

Pass

Partial discharge test

13kv decentralized power ≤ 5pc

13kV discharged power ≤ 5pc

Pass

Load cycle test

The conductor is heated to 90°C -95°C for 8h per cycle. Heating for 5h and cooling for 3h, three cycles in total

Complete three load cycle tests as per standard requirements

Evaluated by the following tests

Partial discharge test

13kV discharged power ≤ 5pc

13kV discharged power ≤ 5pc

Pass

Lightning impulse voltage test

± 105KV 10 times each, no flashover, no breakdown

± 105KV 10 times each, each phase of the combined sample has no flashover and no breakdown

Pass

Negative polarity 15min DC withstand voltage test

52kV, 15min no flashover, no breakdown

52kV, 15min, each phase of the combined sample has no flashover and no breakdown

Pass

4h power frequency withstand voltage test

35kV, 4h without flashover and breakdown

35kV, 4h, each phase of the combined sample has no flashover and no breakdown

Pass