HT & LT POWER CABLES & ELECTRIC CONTROL CABLES

Chemistry of Cross-Linked Polythylene(XLPE), Natural Polythylene (PE) is a compound of Carbon and Hydrogen with linear molecular structure and its principal drawback is that it is thermally unstable at temperatures above 1100c thus limiting its applicability for electrical power cables like HT power cables and LT power cables. To overcome this limitation, the polyethylene is cross-linked by a method called the Catenary Continuous Vulcanisation (CCV) process. This process improves the properties of the cables and makes it suitable for power transmission.

Uniflex has the latest CCV line with triple tandem extruder, micro-processor controlled DC drives, synchronised on-line dia-eccentricity measurement and controls, and a state-of-the-art technology which has been imported from Royle Systems, USA.

STRIKING PROPERTIES OF XLPE CABLES

• Higher current carrying capacity (Higher permissible continuous conductor temperature upto 90°C )
• Higher short circuit rating (XLPE can withstand short circuit temperature upto 250°C )
• Higher Temperature to withstand emergency overload (upto 130°C )
• Extremely low dielectric losses (very important for HV cables)
• Are light in weight and much easier jointing & termination with smaller bending radius

DIFFERENT TYPES OF XLPE CABLES

• H.T.Power Cables upto 33KV to IS : 7098
• L.T. Power Cables To IS : 7098 (Part I) 1988
• Control Cables
• Aerial Bunched Cables