Power System Preventive & Corrective Maintenance Services LV / MV Distribution, Switchgear, Transformers & Substation Equipment
Overview
Power System Preventive & Corrective Maintenance Services are essential electrical, mechanical, and technical services designed to ensure reliability and safety.
Preventive Maintenance involves scheduled inspections and testing to prevent failures, while Corrective Maintenance is reactive, repairing or replacing equipment after a breakdown occurs to minimize downtime.
Preventive Maintenance involves scheduled inspections and testing to prevent failures, while Corrective Maintenance is reactive, repairing or replacing equipment after a breakdown occurs to minimize downtime.
Purpose of Maintenance Services
- Prevent unplanned outages
- Prevent catastrophic equipment failures
Scope of Maintenance Services
- Visual, mechanical and electrical inspection of LV and MV switchboards
- Cleaning, tightening and mechanical integrity checks
- ACB / MCCB inspection, contact condition and trip testing
- Busduct inspection, joint resistance measurement and insulation verification
- Verification of interlocking, control and indication circuits
- Protection relay health checks, firmware review and setting verification
- Functional testing of protection, control and tripping circuits
- Visual inspection of tank, bushings, conservator and cooling systems
- Inspection of oil level, breather, silica gel and Buchholz relay
- Tightening of HV / LV terminations and inspection of cable boxes
- Infrared inspection of bushings and terminations
- Insulation resistance testing and winding condition assessment
- Investigation of oil leakage, overheating and abnormal noise
- Rectification of oil leaks and gasket replacement
- Replacement and repair of defective bushings and transformer accessories
- Sampling and laboratory testing of insulating oil (BDV, moisture, acidity, IFT where applicable)
- On-site oil filtration and dehydration using vacuum filtration systems
- Removal of moisture, gas and solid contaminants from insulating oil
- Oil topping-up and level correction
- Monitoring of oil condition before and after treatment
- Advisory on oil replacement, regeneration or continued service