Bushing Cap for Extensible RMU and GIS Bushings - Heat Shrink (GEK)

About Bushing Cap for Extensible RMU and GIS Bushings - Heat Shrink (GEK)

An extensible ring main unit or gas-insulated switchgear panel is supplied with bushings on its side so that more panels can be coupled later. Until then those bushing ends are live parts exposed to dust, water and moisture, and they need sealing and insulating. Gala's bushing cap does this.

The cap is a red, heat-shrinkable moulding of cross-linked, non-tracking polyolefin with a closed, chamfered end. It is slipped over the bushing end and shrunk with a gas torch or hot-air gun so that it grips the bushing, seals out water and moisture and insulates it. It fits standard RMU and GIS bushings, and is supplied as an end sealing kit for the three bushings of a panel together with sealing mastic. When the panel is extended, the cap is removed from the bushing and the new connection is made.

Two sizes are made. GEK-401 has an internal diameter of at least 75 mm as supplied, recovers to 35 mm or less, and leaves a 4.0 mm insulation wall; GEK-501 opens to 100 mm and recovers to 45 mm with the same wall. Both are rated for 11 kV systems (12 kV equipment), shrink at 125 deg C and work continuously from -40 deg C to +100 deg C. The non-tracking material and weather-resistant design give long service with little maintenance.

Manufactured by Gala in India. Datasheet and size selection on request.

Specifications

• Brand: Gala
• Product type: Heat shrinkable bushing end cap (unscreened), end sealing kit
• Material: Cross-linked non-tracking polyolefin
• Colour: Red
• Voltage rating: 11 kV systems (12 kV equipment)
• Operating temperature: -40 deg C to +100 deg C continuous
• Size range: Two sizes; supplied ID 75 or 100 mm min, recovered ID 35 or 45 mm max
• Wall type / thickness: Insulation layer 4.0 mm (+/-10 %) after free recovery
• Adhesive / sealant: Sealing mastic supplied in the kit
• Application: Sealing and insulating unused bushings on extensible RMUs and GIS panels
• Installation: Slipped over the bushing end and heat shrunk; removed before a new connection
• Country of origin: India
• Shrink temperature: 125 deg C

Sizes

• GEK-401 | ID as supplied 75 mm min | ID after recovery 35 mm max | length 125 mm min | insulation wall 4.0 mm +/-10 %
• GEK-501 | ID as supplied 100 mm min | ID after recovery 45 mm max | length 125 mm min | insulation wall 4.0 mm +/-10 %

Applications: Ring main unit and GIS manufacturers, compact secondary substations, electricity distribution utilities, switchgear manufacturers, EPC and electrical contractors