Transformers and 18 Medium Voltage (MV) Cubicles (SM6-36). The maintenance scope was

carried out to ensure the continued safety, reliability, and operational performance of the electrical distribution systems. The works included detailed inspection, functional testing, cleaning, lubrication, grounding

continuity checks, and verification of critical electrical and mechanical components.

Dry Type Power Transformers

 The maintenance activities for the 7 Dry Type Power Transformers included:

 Physical and mechanical inspection

 Transformer room condition checks

 Thermistor and cooling fan testing

 Grounding continuity verification

 OLTC self-protection testing, where applicable

 General cleaning and maintenance reporting

MV Cubicles – SM6-36

 The maintenance activities for the 18 MV Cubicles included:

 Cleaning and inspection of breaker compartments

 Grounding continuity checks

 Inspection of indicators, heaters, and measuring devices

 Testing of grounding disconnectors and interlocking systems

 Lubrication and inspection of mechanical components

 Inspection and torque verification of MV cable and busbar connections

 Breaker, contact, coil, and spring charging motor testing

 Contact transition resistance measurement

 Inspection of epoxy insulation and cubicle components

Project Outcome

Through the completion of the maintenance program, 7 Dry Type Power Transformers and 18

MV Cubicles (SM6-36) were systematically inspected, cleaned, tested, and serviced.

The completed maintenance activities enhance the reliability, safety, and operational

readiness of the electrical distribution infrastructure, while supporting preventive maintenance

requirements and reducing the risk of unexpected equipment failures and operational

interruptions.