Maintenance & Retrofits
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At SRESTA, we offer a wide range of high-precision electrical testing services to ensure the integrity, safety, and performance of your power systems. Our expert engineers and certified technicians utilize advanced diagnostic equipment to detect faults, verify functionality, and ensure your equipment operates reliably under real-world conditions
Our Maintenance & Retrofits services include:
Circuit Breaker Testing, Maintenance & Retrofits (up to 400KV)
Circuit Breakers contact testing: Analyzing circuit breakers with respect to tripping properties & contact integrity. Maintenance involve lubrication as well as Timing test & checking of contact resistance. On upgrades offer improved safety and retrofitting of distance reclosures to bring them up to modern environmental, operational and safety standards
What we do:
Evaluate breaker timing and movement with mechanical operation tests.
Use current limiting nano-coated breaker contact resistance measurement.
Check and lube mechanical linkage and operating mechanism with inspection.
Verify proper response to sense protection signals by testing trip and close coils.
Modern trip units or digital protection relays are added to replace old breakers for retrofitting purposes.
Switchgear & Motor Control Maintenance / Retrofits
With switchgear and motor control centers, we take care of them to make sure they keep working without any unscheduled outages. There as may be an upgrade in components or in retrofitting with new protective and monitor systems. This is a preventive service that helps keeping up the operational continuity. Made to Order Solutions & Guaranteeing you Better Performance & Longevity Custom Solutions.
What we do:
Visually inspect switchgear enclosures, busbars and connections damage or corrosion.
Clean up terminals, connectors and arc chutes and tighten them to avoid loose connection failure.
Relay test, meter and control logic is also done.
Older parts are replaced with contemporary control systems or Retrofit.
Check operational safety by ensuring the safety and interlocking systems are working.
Switchgear Modifications & Upgrades
An older system of switchgears may be revitalized with the exchange of outmoded components and control systems with some smart ones on the top. Other services include m odifications, upgrades for protection relays & enhancements to panels. With upgrades to the system, the safety, performance monitoring and energy efficiency are optimized in the switchgear systems. Our work insures you are keeping current with modern standards for improved safety and level of service
What we do:
Detects old-fashioned or solely wrong parts within your current switchgear.
Modifies circuit breakers/protective relays for better confguration/protection.
Changing to new modern protection relays & intelligent metering.
Possibility for Remote control/SCADA integration for remote monitoring.
Upgrades to busbars, insulators, and enclosures for added strength and capacity.
Grounding System Healthiness Checking
A reliableGroundingSystem is crucial for the security of personnel and protection of the system. We test the soil resistivity, ground grid continuity and the grounding electrode performance. Any problems identified and corrected to make sure the fault currents are safely dissipated. Regularly checking will help to prevent hazards, and improve the reliability of your equipment.
What we do:
- Soil Resistivity Testing for grounding effectiveness
- Measurement of Earth pits and Ground conductor resistance
- Continuity Testing between Ground Electrodes and Structural Elements
- Fault or Discontinuity Location in Grounding Grid toCorrect
- Providing recommendations for improvements in grounding system
Why it matters:
A healthyGroundingSystem means safe operation during a fault. Fault currents are safely directed into the Earth by it. Regular checkups prevent shock hazards, damage equipment is avoided and ensure code compliance.
Partner with SRESTA for Reliable Electrical Solutions
At SRESTA, we are committed to delivering trusted expertise in high-voltage electrical testing, commissioning, and maintenance services. With years of hands-on experience and industry-recognized certifications, we specialize in ensuring that your electrical systems function safely, efficiently, and without interruption. Our services are built on a foundation of precision, reliability, and compliance with the latest industry standards. Whether it’s a critical substation, a power plant, or a large industrial installation, we approach every project with meticulous attention to detail and a commitment to long-term performance.
We understand that electrical infrastructure is the backbone of every operation, which is why we provide tailored solutions that address both current needs and future challenges. From detailed equipment diagnostics and fault analysis to system upgrades and preventive maintenance, our team is equipped with advanced tools and a problem-solving mindset. We don’t just test and maintain—we partner with you to improve operational efficiency, reduce downtime, and extend the life of your critical assets.
Reach out to us today—let’s power your success together.