Pre-molded Cable Accessories >> 20kV Silicone Rubber Pre-molded Indoor(Outdoor) Termination

                             

                    Indoor                                                 Outdoor

 

20KV Silicone Rubber Pre-molded Termination

 

Features:

Ÿ           Adopt imported liquid silicone rubber material

Ÿ           High elasticity

Ÿ           Aging resistance

Ÿ           Corrosion resistance

Ÿ           Superior waterproof

Ÿ           Excellent pollution resistance

Ÿ           Meets or exceeds IEC60502.4, GB/T12706.4, JB/T8144

Ÿ           Suit for 1-core or 3-core XLPE power cable

Ÿ           Indoor and outdoor are available

 

Silicone Rubber Features

Index

Unit

Insulated Silicon Rubber

Conduction Silicon Rubber

Pull strength

Mpa

≥1.0

≥6.0

Part Tensile strength rate

%

≥800

≥550

Tearing strength

N/mm

≥30

≥18

Anti short circuit

 

1A4.5

/

Dielectric constant

 

<3.5

/

Electric volume resistivity

ΩCm

>1014

<100

Tensile set

 

≤5%

 

 

Technical Specification

Product Model

Items

Requirements

Results

Remarks

20kV Indoor and Outdoor Pre-molded Terminations

AC withstand

voltage test

No breakdown nor flashover shall occur at 55kv for 1 min

No breakdown nor flashover shall occur at 55kv for 1 min

PASS

Partial discharge test

18kv,≤20pc

20kv, ≤1pc

PASS

Heating cycle voltage test

Heated for 5 hours,

Cooled for 3h, Heating at the temperature of 95

During 3 cycles at conductor temperature of 90 to 95

Approved by bellow

tests

Partial discharge test

18kv,≤10pc

20kv, ≤1pc

PASS

Impulse withstand voltage test

1.2/50 u s±10 times

125kv, ±10 times

PASS

Cathode DC voltage test

No breakdown nor flashover shall occur at 72kv for 15 min

No breakdown nor flashover shall occur at 72kv for 15 min

PASS

AC withstand

voltage test

No breakdown nor flashover shall occur at 48kv for 4 h

No breakdown nor flashover shall occur at 48kv for 4 h

PASS

 

Termination Selection Guide

Voltage Grade

Applicable Section(mm2)

3-core(1-core) Pre-molded Type Indoor(Outdoor) Termination

External Insulation Diameter of Applicable Cables

12/20KV

 

3550

N(W)YZ-20/3(1).1

19.021.5

7095

N(W)YZ-20/3(1).2

21.524.5

120150

N(W)YZ-20/3(1).3

24.527.5

185240

N(W)YZ-20/3(1).4

28.031.0

300400

N(W)YZ-20/3(1).5

32.036.0

500630

N(W)YZ-20/3(1).6

37.542.5

 
 

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