Insulation Resistance "MEGGER" Testing
Insulation Resistance “Megger” Testing – San Jose, CA
Specialized Engineering Services, Inc. (SES) provides comprehensive Insulation Resistance Testing, commonly referred to as “Megger Testing,” for facilities throughout San Jose and the greater Bay Area.
This essential test is part of our Electrical Testing and Maintenance services and is trusted by industrial plants, commercial facilities, and power generation stations across the region.
Our San Jose-based field engineers and technicians are available 24/7 to respond quickly to emergency testing needs.
What Is an Insulation Resistance Test?
Insulation Resistance Testing uses high-voltage test equipment (commonly called a Megger) to detect insulation weaknesses in electrical systems.
While similar to an ohmmeter in function, a Megger applies much higher test voltages—ranging from 300V to 10kV—to identify potential breakdowns in:
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Transformers
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Medium-voltage cables
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Switchgear and switchboards
These tests are non-destructive and are conducted following NETA, IEEE, and manufacturer standards to ensure accuracy and safety.
Benefits of Megger Testing for San Jose Facilities
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Extends equipment life with routine, preventative diagnostics
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Minimizes downtime by identifying issues during planned outages
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Quick and non-invasive, allowing fast testing with minimal disruption
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Cost-effective field services with expert personnel
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Ideal for high-demand operations across Silicon Valley and Bay Area infrastructure