Kerala State Electricity Licensing Board

As per Rule 45(1) of Indian Electricity Rules 1956: different electrical works like alterations, repairs ,adjustments to existing installations, except such replacement of lamps, fans, fuses, switches, low voltage domestic appliances and fittings supplier, owner, consumers or occupier except by an electrical contractor licensed .So Kerala Government formed Licensing Board,person who holding this certificate having permit issue the work.

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The electrical supervisory interview mainly concentrates on the following areas.

1. SUBSTATION

• a. EHV Substation
• b. Indoor Substation
• c. Outdoor Substation
• d. Parallel operation of transformers
• e. Transformer and panel room

Size of rooms
Equipments kept in rooms (fire extinguisher, HT gloves, shock chart, danger sign etc.)
Cable trench in rooms
Accessibility

2. TRANSFORMER

• a. Types of transformers
• b. Insulation resistance on HV and LV side
• c. Protection devices and its ratings

3. MOTOR

• a. Different types of motors
• b. Different types of motor starters and its features.

DOL
Star Delta
Soft starter
VFD
Reactance starter

4. GENERATOR

• a. Current rating
• b. Parallel operation of generator
• c. Neutral earthing

3. MOTOR

• a. Different types of motors
• b. Different types of motor starters and its features.

DOL
Star Delta
Soft starter
VFD
Reactance starter

4. GENERATOR

• a. Current rating
• b. Parallel operation of generator
• c. Neutral earthing

5. EARTHING

• a. Earthing design
• b. Earth pit
• c. Earthing strip, pipe, plate size
• d. Lightning arrestor
• e. Earthing compound

6. CABLES

• a. Types of cables (XLPE, AYFY etc.)
• b. Different cable sizes for motors, generator and transformers 
• c. Glanding and gland earthing

7. PANEL BOARDS

• a. Panel erection
• b. Materials for panel fabrication
• c. Types of panel boards x MCC – Motor Control Centre x APFC­Automatic Power factor Control x AMF­ Auto Main Failure x LDB & VDB

8. BACK UP PROTECTION DEVICES

• a. MCB­ Miniature Circuit breaker
• b. MCCB­ Metal Clad CB
• c. MPCB­Motor ProtectionCB
• d. Isolator
• e. ACB­ Air CB
• f. VCB­ Vaccume CB
• g. OCB­ Oil CB
• h. SFU­ Switch Fuse Unit
• i. ELCB
• j. Relays and contactors

9. YOUR CURRENT AND PREVIOUS  PROJECT

If you are working in designing section, you should be capable to design an electrical system.

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