Underground cables

Transmission line

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Construction of cables

1. Core or Conductors
2. Insulators
3. Metallic sheath
4. Bedding
5. Armouring
6. Serving

Construction of cables

Core or Conductors

Materials used for insulation

1. Rubber
2. Vulcanized Indian Rubber
3. Impregnated paper
4. Varnished Cambric
5. PVC

Rubber.

Suspension Type Insulator

Suspension Type Insulator

Types of Insulators

There are several types of insulators but the most commonly used are pin type, suspension type, strain insulator and shackle insulator.

1 Pin type Insulators

Pin Type Insulator