Woer Incorporation

PO Non-shrinkable Tubing
Cold Shrink Silicone Rubber IEC / GB

Cold Shrink MV Cable Accessories Terminations & Straight‑Through Joints

WOER cold shrink cable accessories are manufactured with advanced liquid silicone rubber, offering high resilience, strength, excellent electrical insulation, UV stability, and water resistance. Available for 1kV to 36kV (1kV, 12kV, 15kV, 20kV, 36kV). Most accessories have passed KEMA type test. No heat or special tools required – simply remove the plastic string.

No flaming / no special tools
Permanent radial pressure – no flashover
Triple hermetic sealing – watertight
Ideal for high altitude, cold, humid, polluted regions

Key Characteristics

Advanced liquid silicone rubber technology

No Heat / No Tools

Simply pull out the plastic string from the silicone rubber tube – it shrinks tightly onto the cable without flame or special equipment.

Reliable Insulation

Imported liquid silicone rubber provides permanent radial pressure, keeping contact surfaces tightly joined – no flashover, no arcing.

Superior Hermetic Sealing

Triple hermetic sealing technology + hydrophobic silicone rubber prevent environmental faults – perfect for wet or submerged installations.

Easy Installation

Enlarged stress‑cone dimensions allow larger tolerances, reducing installation errors to a minimum.

Wide Usage

Anti‑pollution, long service life, hydrophobic, cold‑resistant. Suitable for high‑altitude, cold, humid, salt‑fog and polluted regions.

KEMA Type Tested

Most accessories have passed KEMA type tests, ensuring proven reliability for power plants (nuclear), wind farms, substations, subways.

Order Reference

Terminations (WLW(N)) and straight‑through joints (WLJ) for 3(1) core cables – indoor/outdoor

6.35/11kV (12kV)

Type / Order NumberNameCable Range (mm²)
6.35/11kV WLW(N) -3(1)/1Termination (indoor/outdoor)25‑50
6.35/11kV WLW(N) -3(1)/2Termination (indoor/outdoor)70‑120
6.35/11kV WLW(N) -3(1)/3Termination (indoor/outdoor)150‑240
6.35/11kV WLW(N) -3(1)/4Termination (indoor/outdoor)300‑400
6.35/11kV WLW(N) -3(1)/5Termination (indoor/outdoor)500‑630
Straight Through Joints
6.35/11kV WLJ -3(1)/1Straight through joint25‑50
6.35/11kV WLJ -3(1)/2Straight through joint70‑120
6.35/11kV WLJ -3(1)/3Straight through joint150‑240
6.35/11kV WLJ -3(1)/4Straight through joint300‑400
6.35/11kV WLJ -3(1)/5Straight through joint500
6.35/11kV WLJ -3(1)/6Straight through joint630

8.7/15kV (17.5kV)

Type / Order NumberNameCable Range (mm²)
8.7/15kV WLW(N) -3(1)/1Termination (indoor/outdoor)25‑50
8.7/15kV WLW(N) -3(1)/2Termination (indoor/outdoor)70‑120
8.7/15kV WLW(N) -3(1)/3Termination (indoor/outdoor)150‑240
8.7/15kV WLW(N) -3(1)/4Termination (indoor/outdoor)300‑400
8.7/15kV WLW(N) -3(1)/5Termination (indoor/outdoor)500‑630
Straight Through Joints
8.7/15kV WLJ -3(1)/1Straight through joint25‑50
8.7/15kV WLJ -3(1)/2Straight through joint70‑120
8.7/15kV WLJ -3(1)/3Straight through joint150‑240
8.7/15kV WLJ -3(1)/4Straight through joint300‑400
8.7/15kV WLJ -3(1)/5Straight through joint500
8.7/15kV WLJ -3(1)/6Straight through joint630

12/20kV (24kV)

Type / Order NumberNameCable Range (mm²)
12/20kV WLW(N) -3(1)/1Termination (indoor/outdoor)25‑50
12/20kV WLW(N) -3(1)/2Termination (indoor/outdoor)70‑120
12/20kV WLW(N) -3(1)/3Termination (indoor/outdoor)150‑240
12/20kV WLW(N) -3(1)/4Termination (indoor/outdoor)300‑400
12/20kV WLW(N) -3(1)/5Termination (indoor/outdoor)500‑630
Straight Through Joints
12/20kV WLJ -3(1)/1Straight through joint25‑50
12/20kV WLJ -3(1)/2Straight through joint70‑120
12/20kV WLJ -3(1)/3Straight through joint150‑240
12/20kV WLJ -3(1)/4Straight through joint300‑400
12/20kV WLJ -3(1)/5Straight through joint500
12/20kV WLJ -3(1)/6Straight through joint630

18/30kV (36kV)

Type / Order NumberNameCable Range (mm²)
18/30kV WLW(N) -3(1)/1Termination (indoor/outdoor)25‑50
18/30kV WLW(N) -3(1)/2Termination (indoor/outdoor)70‑150
18/30kV WLW(N) -3(1)/3Termination (indoor/outdoor)185‑400
18/30kV WLW(N) -3(1)/4Termination (indoor/outdoor)500‑630
Straight Through Joints
18/30kV WLJ -3(1)/1Straight through joint50‑70
18/30kV WLJ -3(1)/2Straight through joint95‑150
18/30kV WLJ -3(1)/3Straight through joint185‑300
18/30kV WLJ -3(1)/4Straight through joint400‑500
18/30kV WLJ -3(1)/5Straight through joint630

Note: WLW(N) = outdoor/indoor termination; WLJ = straight‑through joint. All products comply with IEC60502.4 and GB12706.4.

Technical Index

Tested according to IEC 60502.4 – all tests PASS

Test Item6.35/11(12)kV8.7/15(17.5)kV12/20(24)kV18/30(36)kVIEC 60502.4
AC withstand voltage test (in air, ambient temp)29kV/5min – no breakdown39kV/5min – no breakdown54kV/5min – no breakdown81kV/5min – no breakdownPASS
Partial discharge≤10pC at 11kV≤10pC at 15kV≤10pC at 20kV≤10pC at 31kVPASS
Impulse withstand test75kV (10 pos/10 neg)95kV (10 pos/10 neg)125kV (10 pos/10 neg)170kV (10 pos/10 neg)PASS
Heating cycles in air30 cycles 95‑100°C, 16kV – no breakdown30 cycles 95‑100°C, 22kV – no breakdown30 cycles 95‑100°C, 30kV – no breakdown30 cycles 95‑100°C, 30kV – no breakdownPASS
Heating cycles under water30 cycles 95‑100°C, 16kV – no breakdown30 cycles 95‑100°C, 22kV – no breakdown30 cycles 95‑100°C, 30kV – no breakdown30 cycles 95‑100°C, 30kV – no breakdownPASS
Partial discharge at 95‑100°C≤10pC at 11kV≤10pC at 15kV≤10pC at 20kV≤10pC at 31kVPASS
Thermal short‑circuit (screen)3.0 kA, 1s – no visible deteriorationPASS
Thermal short‑circuit (conductor)16.8 kA, 2s23.0 kA, 2s31.7 kA, 2s47.5 kA, 2sPASS
Dynamic short‑circuit59.1 kA / ≥10ms81.0 kA / ≥10ms112.8 kA / ≥10ms167.4 kA / ≥10msPASS
Impulse withstand at 95‑100°C75kV (10 pos/10 neg)95kV (10 pos/10 neg)125kV (10 pos/10 neg)170kV (10 pos/10 neg)PASS
AC withstand voltage (15 min)16kV – no breakdown22kV – no breakdown30kV – no breakdown45kV – no breakdownPASS
Salt fog (outdoor terminations)1000h at 7.5kV – no breakdown1000h at 11kV – no breakdown1000h at 15kV – no breakdown1000h at 22.5kV – no breakdownPASS
Humidity (indoor terminations)1000h at 7.5kV – no breakdown1000h at 11kV – no breakdown1000h at 15kV – no breakdown1000h at 22.5kV – no breakdownPASS