Transformer Testing
Transformer Testing Overview
Power Transformers are the lifeblood of every facility.
Whether exporting power, manufacturing, or powering a business park the transformer's proper operation is vital to provide electrical power.
The ideal method to ensure proper operation of your transformer is to conduct periodic maintenance and testing.
Electrical tests, oil samples, inspections of heat and fan circuits, and others will provide valuable data to determine the health of your transformer.
Recommended Transformer Services
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Electrical Testing including winding resistance, transformer turns ratio, insulation resistance, power factor, excitation current, and others.
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Inspection and Verification of proper operation of all components including liquid level gauge, temperature gauge, pressure gauge, fans, load tap changers, radiators, nitrogen delivery systems, oil filtration systems.
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Inspection and Electrical Testing of protection system components including microprocessor relays, potential transformers, current transformers, grounding resistors, bus connections, upstream and downstream protective circuit breakers.
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Laboratory analysis of transformer coolants mineral oil or FR3. Analysis to include dissolved gas analysis, contamination, moisture, and presence of Furan.
Transformer Testing and Repair / Oil Services in San Jose, CA
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Installation
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New Transformers
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All Parts
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Internal Tank Replacement
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Gas Monitoring Systems
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Oil Filtration Systems
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Bushing Replacement
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Gauge Replacement
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Transformer Oil or FR3 conditioning and removal of unwanted particulates or moisture.
Specialized Engineering Services, Inc.
At SES, we proudly offer comprehensive Transformer Testing and Repair services in San Jose and the surrounding Bay Area.
As part of our full suite of Electrical Testing Services, we support critical infrastructure across the region—including power plants, manufacturing facilities, water utilities, and commercial buildings.
Our San Jose-based team is available 24 hours a day, seven
days a week, ensuring we're ready to respond to your emergency needs—anytime, day or night.
Whether you're operating in downtown San Jose, Silicon Valley industrial parks, or municipal utility operations, SES delivers fast, reliable service when and where it matters most.