| 35kV-3#Table of main electrical performance parameters of the inner cone | |||
| No. | Item | Standard parameter values |
Guarantee value |
| 1 | Power-frequency voltage test |
4.5Uo,5min | 117kV,5min,None of the combined specimens broke down or flashover |
| 2 | Partial discharge test (room temperature,test sensitivity above 5pC) |
1.73Uo <5Pc | Below 45kV,the discharge capacity of each combined specimen is≤2pC |
| 3 | Constant pressure load cycle test |
According to GB/T 12706.4 |
In 65kv power frequency voltage and wire heated to a temperature of95℃~100℃,the complete three negative cycle,no flashover,no breakdown |
| 4 | Partial discharge test (high temperature) |
1.73Uo <5Pc | When the conductor temperature is 95℃-100℃ and at 45kV,the discharge quantity of each group of samples is≤2 pC |
| 5 | Impulse voltage test (at a conducting temperature of 95℃ to 100℃) |
±200kV,10 times each |
When the conductor temperature was between 95℃ and 100℃,at 200kV,the positive and negative polarity were tested 10 times each,and none of the combined samples were punctured or flaskew |
| 6 | Power frequency voltage test after impact |
2.5Uo ,15min | 65kV,15min,None of the combined specimens brokedown or flashover |
| 7 | Thermal stability test | According to GB/T 12706.4 |
24.2kA,2.02s&24.1kA,2.01s There was no visible damage after two short circuits |
| 8 | Dynamic stability test | According to GB/T 12706.4 |
84.9kA,0.06s,Invisible damage |
| 9 | Moisture test | 1.25 Uo,300h | After 32.5 KV and 300 hours,none of the combined specimensbroke down or flashover,and there was no significant damage |
| 10 | The allowable short- circuit capacity of the attachment |
(Filled in by the project entity) |
Not lower than the selected cable |
| 11 | The maximum allowable temperature of the accessory during normal operation |
(Filled in by the project entity) |
90℃ |
| 12 | The maximum allowable temperature when the accessory short-circuits |
(Filled in by the project entity) |
250℃ |
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