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35kV heat-shrinkable three-core indoor terminal head
35kV heat-shrinkable three-core indoor terminal head
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Application areas:
Termination treatment for 35kV cross-linked cables
Product Description
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The 35kV heat-shrinkable three-core indoor terminal is widely used in the terminal treatment of 35kV cross-linked cables. It can be equipped with an appropriate amount of stress control tape according to different cable cross-section sizes to facilitate installation and construction, thereby uniformly improving the electric field distribution. It adopts an advanced double grounding wire technology, with the cable steel armor and copper shield grounded separately. The technology has been tested and confirmed by the Wuhan High Voltage Research Institute to be advanced and more reliable in operation.
Product Parameters
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35kV heat shrinkable indoor terminal |
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Experimental Project |
Test requirements |
Test results |
Detailed notes |
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Power frequency withstand voltage |
105kV for 1 minute without flashover or breakdown |
No flashover or breakdown was observed in any of the 105 kV 1 min combined samples. |
qualified |
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Partial discharge test |
39kV≤10pC |
The discharge quantity of each phase in the combined sample is ≤5pC |
qualified |
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Three cycles of load cycling test |
The heating process lasts 5 hours , followed by 3 hours of cooling. The conductor temperature during heating is 95℃. |
Complete three load cycle tests as required by the standard. |
Evaluation by the following tests |
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Impulse voltage test: 1.2/50µs, once each for positive and negative polarity. |
One flashover is allowed for 250kV positive and negative polarity, but it is not counted in the total number of tests. |
All 10 combined samples with positive and negative polarities at 250kV underwent breakdown and flashover. |
qualified |
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DC voltage test negative polarity |
156KV for 15 minutes without flashover or breakdown |
All 156kV 15min combined samples showed breakdown and flashover. |
qualified |
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4-hour power frequency voltage test |
104KV 4h No flashover, no breakdown |
All 104kV 4h combined samples showed breakdown and flashover. |
qualified |
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Product Selection
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35kV heat shrinkable indoor terminal |
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Cable type |
Attachment type |
Cable specifications ( mm² ) |
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Three-core cable |
Indoor terminal |
25-50 |
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70-120 |
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150-240 |
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300-400 |
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500-630 |
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