HV Cable Terminations – Heat Shrink Terminations 11kV 33kV High Voltage Cables

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HV Cable Terminations

Cable Terminations | 11kV 33kV | Medium & High Voltage Cables MV HV | Heat Shrink

Thorne & Derrick distribute HV Cable Terminations for 6.6kV 11kV 33kV high voltage cables – we provide competitive prices for indoor and outdoor heat shrink terminations for HV cables from extensive stocks to UK and international destinations.

HV cable terminations suit single and 3 core medium/high voltage cables with XLPE, EPR or PILC insulation operating at 6.6kV, 11kV and up to 33kV – cable terminations are complete with components including screen earth kit (copper tape screen cables), cable glands (bolt-on, compression or heat shrink type for armoured cables), insulating bushing boots and either crimp or mechanical shearbolt cable lugs.

Cable terminations are designed to terminate and connect 11kV/33kV cables into medium or high voltage electrical equipment including switchgear, transformer, motor, enclosure or pole-top mounted for overhead line distribution networks.

Summary of Cable Termination Test Voltages

Test Test Voltage Rated Voltages U0 1U (Um) kV
3.8/6.6 (7.2) 6.35/11 (12) 8.7/15 (17.5) 12.7/22 (24) 19/33 (36)
Humidity 1.25 U0 5 8 11 16 24
Partial Discharge 1.73 U0 6.5 11 15 22 33
2 U0 7.5 12.5 17.5 25 38
Heating Cycle Voltage & AC Voltage / 15 min & 500 hrs 2.5 U0 9.5 16 23 32 47.5
AC Voltage / 1 Min 4 U0 15 25.5 35 51 76
AC Voltage / 5 Min 4.5 U0 17 28.5 39 57 85.5
DC Voltage / 15 Min 6 U0 23 38 52 76 114
Impulse (Peak) 60 95 95 125 194

Test Sequence & Requirements

Test Test Clause of EN 61442 Test Sequence Test Requirements
A1 A2 A3
1 DC Voltage Dry 5 X X 15 min at 6U0 no breakdown of flashover
2 AC Voltage Dry 4 X X 5 min at 4.5 Uno breakdown of flashover
3 Partial Discharge At Ambient Temperature 7 X Max 10p C at 1.73U0
4 Impulse Voltage At Elevated Temperature 6 X 10 impulses of each polarity, no breakdown or flashover
5 Heating Cycle Voltage In Air 9 X 126 cycles at 2.5U0 no breakdown or flashover for terminations and 63 cycles in water for joints
6 Partial Discharge At Elevated & Ambient Temperature  7 X Max 10C at 1.73U0
7 Thermal Short Circuit (Screen) 10 X 2 short circuits at 1sc no breakdown
8 Thermal Short Circuit (Conductor) 11 X 2 short circuits to raise conductor to 6sc of the cable, no breakdown
9 Dynamic Short Circuit 12 X 1 short circuit at 1d no breakdown
10 Impulse Voltage At Ambient Temperature 6 X X 10 impulses of each polarity, no breakdown or flashover
11 AC Voltage Dry 4 X X 15 min at 2.5U0 no breakdown or flashover
12 Humidity 13 X 300 hrs duration at 1.25U0
13 Examination X X X For information

 

See: HV Cable Joints – Heat Shrink 6.6kV 11kV 33kV High Voltage Cables

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Heat Shrink Cable Terminations 6.6kV 11kV 33kV

HV Joints & Terminations | High Voltage Cables