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10kV heat shrink joint

10kV heat shrink joint

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Application areas:

Intermediate treatment for 10kV cross-linked cables

Product Description

a . Many cable joint failures are caused by poor sealing. Our company uses a new process (three-layer sealing process) to make the cable safer and more reliable in operation. The so-called three-layer sealing refers to the outer sheath sealing, the inner sheath sealing, and the sealing at both ends of the inner insulation tube, for a total of three seals.

b . The insulation tube was lengthened, which solved the creepage problem.

c . The sheath is flexible and flame-retardant.

Product Parameters

Serial Number

Test Item 1)

Standard requirements

Indoor

outdoor

middle

1

Power frequency withstand voltage test

AC 39kV , 5min or

DC 35kV , 15min

Power frequency withstand voltage test under rain

----

At 35kV , for 1 minute, the combined sample did not exhibit flashover or breakdown.

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2

Partial discharge test at room temperature

No discharge was detected in the combined sample at 15kV.

3

High-temperature impulse voltage test, under θ t 2)

95kV , 10 positive and 10 negative polarity impacts without flashover or breakdown

4

Constant pressure load cyclic test

Cycled 60 times at temperature θt and 23kV (in air)

Cycle 30 times (in air) and 30 times (in water ) at θt temperature and 23kV.

5

Partial discharge (at θ t 2) 4) and ambient temperature t )

≤10pC at 15kV

6

Short-circuit thermal stability (shielded 5 )

Under the I SC shielding of the cable, two short circuits resulted in no visible damage;

7

Short-circuit thermal stability (conductor)

When the conductor temperature is raised to θ SC , two short circuits occur without visible damage.

8

Short-circuit dynamic stability

Under cable shielding condition I d , a single short circuit resulted in no visible damage.

9

Impulse voltage test

95kV , 10 positive and 10 negative polarity impacts without flashover or breakdown

10

AC withstand voltage

23kV , 15min

11

Fog test 7)

11kV , 300H

12

Salt spray test 7)

11kV , 1000H

1 ) Unless otherwise specified, the test shall be conducted at ambient temperature;

2 ) θt is the highest temperature of the conductor during normal operation plus (5-10)℃;

3 ) Each cycle lasts 8 hours, with a temperature stabilization time of at least 2 hours and a cooling time of at least 3 hours;

4 ) Take measurements at the end of the heating period;

5 ) This test is only applicable to terminals that can be directly or indirectly connected to the cable's metal shield via a bushing;

6 ) This requirement applies to single-core cable accessories with a peak current ip>80kA and three-core cable accessories with a peak current ip>63kA;

7 ) This requirement does not apply to the terminals of porcelain bushings and porcelain insulating bushings; for terminals with protective covers, testing should be conducted under three-phase conditions.

Product Selection

voltage level

Number of wire cores

Cable cross-section /mm2

Product Code

8.7/15(17.5)kV

3,1

25-50

70-120

150-240

300-400

500-630

8.7/15kVRSJY-3/1(1/1)

8.7/15kVRSJY-3/2(1/2)

8.7/15kVRSJY-3/3(1/3)

8.7/15kVRSJY-3/4(1/4)

8.7/15kVRSJY-3/5(1/5)

6/10(12)kV

6.35/11(12)kV

3,1

25-50

70-120

150-240

300-400

500-630

6/10kVRSJY-3/1(1/1)

6/10kVRSJY-3/2(1/2)

6/10kVRSJY-3/3(1/3)

6/10kVRSJY-3/4(1/4)

6/10kVRSJY-3/5(1/5)

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