HV Cable Joints – Heat Shrink Joints 11kV 33kV High Voltage Cables
Thorne & Derrick distribute HV Cable Joints for 6.6kV 11kV 33kV high voltage cables – we provide competitive prices for heat shrink joints for HV cables from extensive stocks to UK and international destinations.
Heat shrink cable joints include straight, transition and branch types for XLPE, PILC and EPR single and 3 core cables – suitable for all types of polymeric and paper insulated medium/high voltage cables with/without steel wire armour or braid, copper tape/wire screens and copper or aluminium conductors up to 33kV.
- Mechanical connectors for conductor and copper wire /screen shield are supplied
- Short, slim profile and compact space saving design for installation
Robust Outer Cable Sealing & Protection
Modern cable laying techniques require a robust oversheath and jacket replacement capable of withstanding high mechanical stresses during conventional cable pulling and laying as well as mechanical impact occurring during the entire cable life time. The thick-wall heat-shrinkable tubing is internally coated with a hot melt adhesive to ensure an effective moisture seal and corrosion protection for the joint.
➡ Video: Heat Shrink Cable Joint 11kV 3 Core XLPE & EPR High Voltage Cable Joints
& Cable Joints
The following table provides an excerpt of data from the Type Test Reports for Heat Shrink Cable Joints for 6.6kV, 11kV and 33kV voltages.
|Summary of Test Voltages|
|Test||Test Voltage||Rated Voltage U01U (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 & Salt Fog||1.25U0||5||8||11||16||24|
|Heating Cycle Voltage & AC Voltage / 15 min and 500 hours||2.5U0||9.5||16||23||32||47.5|
|AC Voltage / 1 min||4U0||15||25.5||35||51||76|
|AC Voltage / 5 min||4.5U0||17||28.5||39||57||85.5|
|DC Voltage / 15 min||6U0||23||38||52||76||114|
|Test Sequence & Requirements|
|Test||Test Clause of EN 61442||Test Sequence||Test Requirements|
|1||DC Voltage Dry||5||X||X||15 min at 6U0, no breakdown or flashover|
|2||AC Voltage Dry||4||X||X||5 min at 4.5U0, no breakdown or flashover|
|3||Partial Discharge At Ambient Temperature||7||X||Max 10pC 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 air and 63 cycles in water for cable joints|
|6||Partial Discharge At Elevated & Ambient Temperature||7||X||Max 10pC 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 hours duration at 1.25U0|
|13||Examination||–||X||X||X||For information only|
Shrink Polymer Systems test and qualify their products to the criteria above as outlined in Cenelec standards HD 628 S1 and 629.1 S2:2006.
This testing criteria also encompasses VDE 0278 and IEC 60502.
Cable Joints For Paper Insulated Cables MV HV
Heat shrink cable joints are available for single-core and 3-core impregnated paper-insulated metal-sheathed cables that have copper or aluminium conductors and lead, lead alloy or corrugated seamless aluminium sheaths with rated voltages from 3,3/3,3kV up to 19/33kV.
- Impregnated, single-core paper cables – 3,8/6,6kV, 6,35/11kV, 12,7/22kV and 19/33kV
- Impregnated, single-core paper cables – 3,8/6,6kV and 6,35/11kV
- Impregnated, 3-core belted cables – 3,8/6,6kV, 6,6/6,6kV, 6,35/11kV and 11/11kV
- Impregnated, 3-core screened cables – 6,35/11kV, 12,7/22kV and 19/33kV
- Impregnated or drained, 3-core belted cables – 3,3/3,3kV, 3,8/6,6kV, 6,6/6,6kV, 6,35/11kV and 11/11kV
- Impregnated 3-core screened cables – 6,35/11kV
➡ Should you require customer service or technical support to specify and select the correct cable joint please contact us – view the full range of HV Cable Joints below.