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high elastic silicone rubber
strong anti-tracking and radiation resistance
27.5kV XLPE cable indoor terminal
27.5kV XLPE cable outdoor terminal
27.5kV XLPE cable middle connector Features
1, reliable insulation: imported high elastic silicone rubber preform, always maintain the right radial pressure on the cable body accessories are installed, linked closely together, not for cable runs respiration and interface breakdown within the interface. Stress control part of the main insulation composite as a whole, to effectively solve the problem of electric cable outer shield the fracture stress concentration, to ensure that the insulation, the safe operation;
2, environmental adaptability: the product has a very strong anti-tracking and radiation resistance, excellent weather resistance, corrosion resistance, anti-foul, anti-aging advantages, suitable for high altitudes, cold areas, wet areas, salt fog areas heavily contaminated areas;
3, the selection of fit: the cold shrink structure, each specification is applicable to a variety of cable diameter;
Easy to install: all products are factory preforms, install and operate, no special training, saving time and effort. The shrink Installation solve cable accessories contraction is not tight or loaded into the phenomenon, reducing the quality accidents caused due to improper operation.
Technical parameters
27.5kV XLPE cable terminal
No. | Test item 1) | Test requirements | |
1 | AC withstand voltage or DC voltage withstand AC withstand |
124kV, 5min or 110kV, 15min 110kV, 1min, rain 2) Flashover, no breakdown |
|
2 | Partial discharge | At ambient temperature, 48kV, ≤ 5pC |
|
3 | Impulse voltage test in θt3 4) below) | 250kV, ± 10 times |
|
4 | Constant pressure cycle test (In air) | 3 cycles of 5), in 69kV and θt environment |
|
5 | Partial discharge | 48kV, at ambient temperature, and the θt environment, ≤ 5pC |
|
6 | Constant pressure cycle test (In air) | 60 cycles, in 69kV and θt environment |
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7 | Soak Test 2) | 10 cycles |
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8 | Partial discharge | 48kV, at ambient temperature, and the θt environment, ≤ 5pC |
|
9 | The short thermal stability (shielded and armored) | Cable shield ISC, short circuit, and no visible damage. |
|
10 | The short thermal stability (conductor) | Elevated to the cable conductor QSC, short circuit, and no visible damage |
|
11 | Short circuit dynamic stability | Id under short circuit, no visible damage |
|
12 | Impulse voltage test | 250kV, ± 10 times |
|
13 | AC withstand | 69kV, 15min |
|
14 | Wet test 6) | 34.5kV, 300h, no flashover, no breakdown, tripping over three times, and no significant damage 7) |
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15 | Salt Spray Test 2) | 34.5kV, 1000h, flashover, without breakdown, the trip does not exceed three times, and no significant damage |
|
27.5KV XLPE cable middle connector
No. | Test item 1) | Test requirements | |
1 | AC withstand voltage or DC voltage withstand | 124kV, 5min or 110kV, 15min |
|
2 | Partial discharge | At ambient temperature, 48kV, ≤ 5pC |
|
3 | Impulse voltage test (In θt2) 3) below) | 250kV, ± 10 times |
|
4 | Constant pressure cycle test (In air) | 3 cycles 4), in 69kV and θt environment |
|
5 | Partial discharge | 48kV, at ambient temperature, and the θt environment, ≤ 5pC |
|
6 | Constant pressure cycle test (In air) | 30 cycles, in 69kV and θt environment |
|
7 | Constant pressure cycle test (In water) | 30 cycles, in 69kV and θt environment |
|
8 | Partial discharge | 48kV, at ambient temperature, and the θt environment, ≤ 5pC |
|
9 | Short thermal stability (Shielded and armored) | Cable shield ISC, short circuit, and no visible damage. |
|
10 | Short thermal stability (Conductor) | Elevated to the cable conductor QSC, short circuit, and no visible damage |
|
11 | Short circuit dynamic stability | Id under short circuit, no visible damage |
|
12 | Impulse voltage test | 250kV, ± 10 times |
|
13 | The middle joints machinery impact test 6) | The standard Appendix H.1 |
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14 | AC withstand | 69kV, 15min |
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