Isolator Maintenance Service in India

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Isolator Maintenance Service
33kV Isolator Maintenance
Substation Isolator Maintenance

Isolator Maintenance Service

SPKN India offers specialized isolator maintenance services as part of its substation maintenance solutions. Our trained and certified team ensures reliable performance, safety, and long-term operational efficiency of electrical isolators used in HT substations.

We conduct both preventive and breakdown maintenance at defined intervals — quarterly, half-yearly, or annually — ensuring uninterrupted power flow and extended equipment life. Each activity is executed under strict safety protocols and electrical standards.

Our services include comprehensive inspection, cleaning, lubrication, mechanical alignment, and contact resistance testing for various isolator configurations. We also undertake maintenance for approved isolator disconnectors, including banging type and turn-and-twist type, with ratings up to 400A/800A for 11kV and 400A/800A/1600A for 33kV systems.

With a focus on precision, safety, and timely execution, SPKN India ensures that every isolator operates efficiently, minimizing downtime and maximizing reliability.



About Isolator Maintenance

Professional maintenance services for isolator disconnectors to ensure smooth operation, safety, and reliability.

Isolator disconnectors play a vital role in electrical substations as mechanical offload switches used to safely separate electrical circuits. For fault-free operation, proper mechanical movement, alignment, and contact pressure are essential.

Maintenance Steps We Follow:

  • Replacement of worn-out or damaged isolator components with rated, approved parts.
  • Cleaning of insulators and contacts (male and female) using suitable solvents.
  • Application of high-grade petroleum jelly or grease to all moving joints and bearings.
  • Tightening and verification of all electrical and earthing connections.
  • Mechanical alignment checks to ensure smooth and uniform operation.
  • Inspection of interlocking systems between isolator and VCB for synchronization accuracy.
  • Contact Resistance Measurement (CRM) testing to ensure effective conductivity and pressure.

At SPKN India, we ensure the complete mechanical and electrical health of isolators — delivering safe, reliable, and uninterrupted substation operations.

132kV Isolator Maintenance

Why Choose SPKN India

Skilled professionals, MSEDCL-approved services, and advanced testing methods for high-voltage isolators.

Expert team for substation isolator maintenance
Specialized in both periodic and breakdown maintenance
Certified and approved electrical contractor
CRM testing and mechanical alignment verification
Proper greasing, cleaning, and tightening practices
Use of genuine, rated spare parts
Technical expertise across 11 kV to 132 kV isolator systems
Comprehensive earthing and interlock checks