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Medium pressure heat shrinkable intermediate joint

Medium pressure heat shrinkable intermediate joint

It is widely used in the fields of electric power industry, communications, automobiles, ships, aircraft manufacturing, etc.

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Product Description

It is widely used in the fields of electric power industry, communications, automobiles, ships, aircraft manufacturing, etc.


Many failures of cable intermediate joints are caused by poor sealing. Our company adopts a new process (three seal process), which makes the operation of cables safer and more reliable. The so-called three seals, namely, the outer protective layer seal, the inner protective layer seal, and the seals at both ends of the inner insulating pipe, constitute a total of three seals.

The insulation pipe is lengthened to solve the problem of creepage.

The protective sleeve is soft and flame retardant.



序号

试验项目1)

标准要求

户内

户外

中间

1

工频耐压试验

AC 39kV,5min或

DC 35kV,15min


淋雨下工频耐压试验

----

35kV下,1min,组合试样未闪络和击穿

------

2

室温下局部放电试验

在15kV下组合试样无可检测放电

3

高温下冲击电压试验,在θt2)下

95kV,正负极性冲击各10次不闪络,不击穿

4

恒压负荷循环试验

在θt温度下和23kV下循环60次3)(空气中)

在θt温度下和23kV下循环30次3)(空气中)和30次3)(水中)

5

局部放电(在θt2)4)下和环境温度下t)

在15kV下≤10pC

6

短路热稳定(屏蔽5))

在电缆屏蔽的ISC下,短路2次,无可见损伤;

7

短路热稳定(导体)

升高到电缆导体的θSC下,短路2次,无可见损伤

8

短路动稳定

在电缆屏蔽的Id下,短路1次,无可见损伤

9

冲击电压试验

95kV,正负极性冲击各10次不闪络,不击穿

10

交流耐压

23kV,15min

11

潮雾试验7)

11kV,300H

12

盐雾试验7)

11kV,1000H

1)除非另有规定,试验应在环境温度下进行;

2)θt是正常运行时导体最高温度加(5-10)℃;

3)每一循环8H,温度稳定时间至少2H,冷却时间至少3H;

4)在加热期结束时进行测量;

5)本试验仅适用于能直接或通过衬套与电缆金属屏蔽相连接的终端;

6)进对峰值电流ip>80kA的单芯电缆附件和峰值电流ip>63kA的三芯电缆附件有此要求;

7)对瓷套管、瓷绝缘套管的终端无此要求;对有护罩式终端应在三相条件下试验。


产品名称

规格型号

适用电缆截面

热缩单芯中间接头

JRSY-10/1.1

25-50mm2

JRSY-10/1.2

70-120mm2

JRSY-10/1.3

150-240mm2

JRSY-10/1.4

300-500mm2

热缩三芯中间接头

JRSY-10/1.1

25-50mm2

JRSY-10/1.2

70-120mm2

JRSY-10/1.3

150-240mm2

JRSY-10/1.4

300-500mm2


contact us

Tel: + 86 0577 61758955

Mobile: + 86 13587882088

Address: No. 13, Xiangzhong West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province