De-Gassing Cable End Cap with Pressure Relief Valve (INSULCAP RV)

About De-Gassing Cable End Cap with Pressure Relief Valve (INSULCAP RV)

Gas keeps evolving inside high-voltage and extra-high-voltage cables while drums are transported and stored, especially in hot climates. With an ordinary sealed cap that gas is trapped in the cable. Gala's INSULCAP De-gassing cap seals the cable end and lets the gas out.

The cap is a heat-shrinkable cross-linked polyolefin end cap with a brass-and-steel relief valve through its domed tip. It is shrunk over the outer sheath with a gas torch, on both ends of the cable. As gas pressure inside the cable rises above 1 psi, the valve opens and releases the excess; because the valve is non-return, moisture, water and dirt cannot enter.

Cable makers use these caps on HV and EHV power cables (33 kV and above) between the factory and installation, during transport and storage. Relieving the gas while the cable is on the drum may shorten the time it needs in the de-gassing (heating) chamber.

Fourteen sizes cover cable outside diameters from 12 mm to 200 mm, most in a standard and a long version. The cap material has a minimum tensile strength of 12 N/mm2, minimum elongation of 350 % and a continuous temperature limit of -40 to +100 deg C. Gala is an ISO 9001, ISO 14001 and ISO 45001 certified manufacturer.

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

Specifications

• Brand: Gala
• Product type: Heat-shrinkable cable end cap with non-return pressure relief valve
• Material: Cross-linked polyolefin cap; brass-and-steel valve
• Colour: Black
• Voltage rating: Not applicable - a sealing cap for HV and EHV cable ends (33 kV and above) in transport and storage, not an electrical component
• Operating temperature: -40 to +100 deg C (continuous)
• Size range: GEC 102 RV to GEC 801 RV, cable outside diameter 12 to 200 mm
• Application: Sealing both ends of HV and EHV cable drums while venting evolved gas
• Installation: Shrunk over the outer sheath with a gas torch
• Country of origin: India
• Valve: Non-return relief valve, opens above 1 psi
• Tensile strength: 12 N/mm2 min (ASTM D638)
• Elongation: 350 % min (ASTM D638)
• Water absorption: 0.2 % max (ASTM D570)

Sizes

• All in mm.
• Code | Cable OD range | Supplied ID (min) | Recovered ID (max) | Length (min) | Recovered wall
• GEC 102 RV | 12 - 26 | 30 | 11 | 75 | 2.5
• GEC 201 RV | 16 - 35 | 40 | 15 | 90 | 3.3
• GEC 201 L RV | 16 - 35 | 40 | 15 | 120 | 3.3
• GEC 301 RV | 25 - 47 | 55 | 25 | 125 | 3.8
• GEC 301 L RV | 25 - 47 | 55 | 25 | 170 | 3.8
• GEC 401 RV | 35 - 68 | 75 | 35 | 140 | 4.0
• GEC 401 L RV | 35 - 68 | 75 | 35 | 180 | 4.0
• GEC 501 RV | 45 - 90 | 100 | 45 | 160 | 4.0
• GEC 501 L RV | 45 - 90 | 100 | 45 | 200 | 4.0
• GEC 801 RV | 140 - 200 | 230 | 125 | 220 | 4.0
• Also in the range: GEC 601 RV, GEC 601 L RV, GEC 701 RV, GEC 701 L RV.

Applications: HV and EHV power cable manufacturing, cable export and storage yards, transmission utilities, EHV cable laying contractors, substation projects