Protective Relay Testing
Relay Testing Overview
Circuit protection relays are part of the protection scheme which contains or isolates faults protecting employees and equipment. Proper electrical testing and simulation of relay functions is a complex task for most types of substation relays.
SES performs electrical testing, calibration, and repair of electro-mechanical, solid state, and microprocessor circuit protection relays. State of the art test equipment (ex. MANTA 5100 Relay Test Set) and software (RTS Relay Test Software) are used to complete testing.
Field Engineers with proper understandings of circuit schematics, switching schemes, Input/Outputs, Ladder Logic, power generation, and more are tasked with performing the relay testing.
SES is capable of performing line to line or also described as end to end relay testing and calibration.
Additional Relay Services
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Programming and Start Up
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Function Tests (simulating fault and physically trip breaker)
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Relay coordination (electrical coordination)
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Relay sales
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Relay retrofits
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Construction of relay panels
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Relay circuit protection design
Common Relays Serviced
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SEL - Schweitzer Engineering Laboratories Relays
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SEL-2664, SEL-300G, SEL-700G, SEL-311C, SEL-321, SEL-351, SEL-352, SEL-387, SEL-411, SEL-451, SEL-487, SEL-501, SEL-551, SEL-701, SEL-710, SEL-751, SEL-849, and other SEL Relays
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Beckwith
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M-3425, M-3410, M-3520, M-7679, M-2001, M-3311
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GE - General Electric
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BDD, CFD, CFVB, GCX, GCY, GGP, IAC, IAV, ICW, IJC, PJC, PVD, Multiline
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ABB - ASEA Brown Boveri
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TPU, DPU, CO, CV, HU, IRP, KAB, KC, KD, KDTG, KDXG, SC, SV, TD
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Basler - BE1 Models
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Bently Nevada
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Allen Bradley
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Rockwell Automation
Specialized Engineering Services, Inc.
At Specialized Engineering Services (SES), we deliver thorough and reliable Relay Testing services as part of our full suite of Electrical Testing and Maintenance solutions.
Serving facilities across San Jose and the Bay Area, we test protective relays in environments such as industrial plants, commercial complexes, utility substations, and power stations to ensure your systems respond correctly to electrical faults.
Our field engineers are available 24/7 to handle emergency situations, helping you minimize downtime and maintain safety-critical operations around the clock.