12/20（24）kV冷缩电缆附件主要试验项目
The main testing items for 12/20（24）kV cold shrink cable accessories |
序号
No. |
试 验 项 目
Testing Items |
试验条件及标准
Testing Conditions and Standards |
试 验 结 果
Results |
备注
Remarks |
| 1 |
工频耐压
AC withstand voltage test
|
54kV5min 不闪络、不击穿
Neither breakdown nor flashover shall occur at 54kV for 5min
|
通过 Pass
|
|
| 2 |
局部放电
Partial discharge test |
在20kV下，放电量≤10pc
The magnitude of the discharge at 20kV shall not exceed 10pc |
通过 Pass |
|
| 3 |
冲击电压试验
Impulses voltage test |
125kV，±10次 不闪络、不击穿
Neither breakdown nor flashover shall occur at 10 positive and 10 negative impulses of 125 kV |
不击穿、不闪络
No breakdown no flashover |
|
| 4 |
恒压负荷循环（在空气中）Heating cycle (in air) |
导体施加电压35kV，并加热至（95-100）°C。其中温度稳定2h，冷却3h，共3次循环。Temperature stability 2h, cooling 3h,3 cycles in air at the conductor temperature of 95°C to 100 °C and 35kV
|
不击穿及由以下试验评定试验结果
No breakdown. Evaluation by the following test results |
|
| 5 |
局部放电（正常运行时导体最高温加5-10°C）
Partial discharge(at the normal operation the conductor's high temperature add 5-10 °C) |
在20kV下，放电量≤10pc
The magnitude of the discharge at 20kV shall not exceed 10pc |
通过 Pass |
|
| 6 |
恒压负荷循环试验
Heating cycle voltage test |
导体施加电压35kV，并加热至（95-100）°C。其中温度稳定2h，冷却3h，共60次循环。（30次在空气中，30次在水中）
Temperature stability 2h, cooling 3h ,60 cycles at the conductor temperature of 95°c to 100 °c and 35kV(30 times in air and 30 times in water) |
不击穿及由以下试验评定试验结果
No breakdown. Evaluation by the following test results |
|
| 7 |
局部放电（正常运行时导体最高温加5-10°C和环境温度下）Partial discharge(at the normal operation the conductor's high temperature add 5-10 °C and environment and temperature)
|
在20kV下，放电量≤10pc
The magnitude of the discharge at 20kV shall not exceed 10pc |
通过 Pass |
|
| 8 |
热稳定试验
Thermal short-circuit test |
在23kA下，短路2次，无可见损伤
No visible deterioration at 23kA,2 short circuit |
通过 Pass |
|
| 9 |
动稳定试验
Dynamic short-circuit test |
在81kA下，短路1次，无可见损伤
No visible deterioration at 81kA,1 short |
通过 Pass |
|
| 10 |
冲击电压试验
Impulses voltage withstand |
125kV，±10次
At 10 positive and 10 negative impulses of 125 kV
|
不击穿、不闪络
No breakdown no flashover |
|
| 11 |
交流耐压
AC withstand voltage test |
30kV,15min. |
不击穿、不闪络
No breakdown no flashover |
|
| 12 |
潮湿试验
Humidity tests |
15kV，300h |
不发生击穿、闪络和过电流释放
No breakdown no flashover no over-current release |
户内终端
Indoor Termination |
| 13 |
盐雾试验 |
15kV，1000h |
不发生击穿、闪络和过电流释放
No breakdown no flasho |
户外终端
Outdoor Termination |
