15kV / 20kV 630A Insulation Protection Cap Sparable Connectors

15kV 630A insulation protection cap is an accessory of live bushing. It is reserved to provide insulation and seal protection for live bushing lines, and provides dustproof, moisture-proof and seal protection for non-live interface. It is suitable for the inlet and outlet terminals of ring network switchgear (crosslinked power cable). It is suitable for C type casing in EN50180-50181, such as inlet and outlet bushing seat of switch cabinet, wall bushing of cable branch line and double pass bushing.

OEM production is accepted

This is plug type accessories,also named Separable Connectors.It includes separable Elbow,straight and Tee connector kits.Our separable connectors are widely used in switchgears,transformers,cabinets and other electrical equipments.It is made of EPDM or silicone rubber with integrated field control.And adopts advanced triple-layer( a conductive inner layer,an insulation layer and a conductive outer layer) injection technique to guarantee the interface property to avoid gaps between layers and decrease partial discharge maximally.Our separable connectors are mainly includes IEC type & IEEE type.

  • EN 50181 Plug-in type bushings above 1kV up to 52kV and from 250A to 2.5kA for liquid filled transformers.
  • EN 50180 Bushings above 1kV up to 36kV and from 250A to 3.15kA for liquid filled transformers.
  • HD629.1 Test requirements on accessories for used on power cables of rated voltage from 3.6/6(7.2)kV up to 20.8/36(42)kV-Part 1:cables with extruded insulation.
  • IEC 60502.4 Power cable with extruded insulation and their accessories for rated voltages from 1kV(U=1.2kV)up to 30kV(U=36kV)-part 4:test requirements on accessories for cable with rated voltages from 6kV up to 30kV(U=36kV.
  • lEc60099 Metal oxide surge arresters without gaps for A.C.systems.
  • JB/T 8952 Polymer-housed metal oxide surge arresters without gaps for A.C.systems.
  • IEEE 386 Separable insulated connector system for power distribution system above 600V.
  • GB11032 Metal oxide surge arresters without gaps for A.C.system.
  • JB/T 8952 Polymer-housed metal oxide surge arresters without gaps for A.C.systems


separable connector


separable connector

1.Insulating layer: special formula and mixing technology to ensure high quality of prefabricated silicone rubber.
2.Internal semi conductive layer: prefabricated inner semi conductive layer to effectively control the stress of electric field.
3.Outer semi conductive layer: The prefabricated outer semi conductive layer adheres closely to the insulating layer and ensures that the outer semi conductive layer is grounded.
4.Operating ring: made of stainless steel and more easy for installation and operation.
5.With the thread: thread size metric coarse thread M16.
6.Grounding hole: Pre-wired to the outer shield for ground wire connection.


separable connectorseparable connector  separable connectorApplication:

15kV 630A / 20kV 630A Silicone Rubber Insulated Cap

  • 630A insulated cap is an accessories of live bushing, which provides insulating cover protection for the live bushing, and provides a dust-proof and moisture-proof protection for the nonelectrified connector.
  • 630A insulated cap can be installed on the 630A bushing and busbar or other equipments. When the cable wiring reserved backup connectors, it must be sealed with a 630A insulated cap.
  • 630A insulated cap made of high quality silicone rubber, fully insulated, fully sealed, safe and reliable.
  • Customers: Electricity company, switch manfuacturer, transformer manufacturer, capacitor manufacturer, cabinets manufacturer, and other electrical equipments manufacturer.

cable connector





IEC type


switchgears, transformers, cabinets


IEC, IEEE, EN 50180, EN 50181, HD629.1, JB/T 8952


15kV 630A, 20kV 630A

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