What are the types of cables used in 6.6 kV and 415 V system voltages?

1.	What are the types of cables used in 6.6 kV and 415 V system voltages?
Answer» In 6.6 kV system AC (unearthed) grade having stranded aluminium conductors cables are used. Their insulation’s are as follows. 1. XLPE – Crossed linked polyethylene insulation. 2. FRLS PVC – Fire retardant low smoke insulation with PVC inner and outer insulation. In RB copper conductor stranded cables are used. 3. FS – fire survival insulation. 4. HR PVC – heat resistant insulation. In 415 V system 1100 V grade copper or aluminium stranded cables are used. Their insulations are HR PVC and FS type.

Answer»

In 6.6 kV system AC (unearthed) grade having stranded aluminium conductors cables are used. Their insulation’s are as follows.

1. XLPE – Crossed linked polyethylene insulation.

2. FRLS PVC – Fire retardant low smoke insulation with PVC inner and outer insulation. In RB copper conductor stranded cables are used.

3. FS – fire survival insulation.

4. HR PVC – heat resistant insulation.

In 415 V system 1100 V grade copper or aluminium stranded cables are used. Their insulations are HR PVC and FS type.

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