Basic of Electrical Maintenance

 Basic of Electrical Maintenance

1. Introduction to Electrical Maintenance:

It involves inspection, testing, servicing and repair of electrical systems to ensure safe and efficient operation.

2. Importance of Maintenance:

Prevents failures, improves reliability, reduces downtime and extends equipment life.

3. Types of Maintenance:

Includes preventive (planned), predictive (condition-based) and breakdown (after failure).

4. Safety Practices:

Use PPE, follow LOTO, ensure isolation and avoid working on live circuits.

5. PPE (Personal Protective Equipment):

Includes gloves, helmet, safety shoes, goggles to protect from electrical hazards.

6. Basic Tools & Instruments:

Tools like multimeter, tester, pliers, clamp meter help in maintenance and troubleshooting.

7. Electrical Hazards & Risk Assessment:

Identifies risks like shock, fire, arc flash and applies control measures.

8. Maintenance of Cables & Wiring:

Check insulation, connections, routing and avoid overloading.

9. Maintenance of Switches & Sockets:

Inspect for loose contacts, overheating, cracks and replace if faulty.

10. Maintenance of Earthing System:

Ensure low resistance path, check electrodes, moisture and connections.

11. Maintenance of Lighting System:

Clean fixtures, replace lamps, check wiring and ensure proper illumination.

12. Maintenance of Distribution Board:

Tighten connections, clean dust, check breakers and ensure proper labeling.

13. Inspection & Testing Procedures:

Includes visual checks, insulation testing, continuity and functional tests.

14. Maintenance of Transformers:

Check oil level, temperature, connections, insulation and perform tests.

15. Maintenance of Circuit Breakers:

Inspect contacts, trip mechanism, insulation and test operation.

16. Maintenance of Motors:

Check bearings, winding, alignment, lubrication and vibration.

17. Battery & UPS Maintenance:

Check voltage, electrolyte level, backup time and clean terminals.

18. Preventive Maintenance Scheduling:

Plan regular maintenance activities to avoid unexpected breakdowns.

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