Relay testing requires proper isolation, lockout/tagout procedures per OSHA 1910. Use secondary injection testing when possible to avoid primary current injection. THEY SHOULD BE GIVEN FIRST LINE MAINTENANCE ATTENTION. COMPREHENSIVE INSPECTION, MAINTENANCE AND TESTING PROGRAM. ” relay may only need to operate for 0. But failure to operate as intended can result in extensive damage, extended power outages, and loss of life. NETA. Our protection testing solutions help you to master the challenges involved in testing protection relays and other assets, as well as creating the associated test reports, in the best possible way. As the protection relay and the primary equipment in the medium-voltage substations are close to one. Acceptance tests are generally performed in the laboratory. Therefore, complex type tests simulating the working conditions are completed at the manufacturer's facilities during. Protective circuit functional testing, including lockout relay testing, must take place immediately upon installation, every 2 years thereafter, and upon any change in wiring. If applicable, documentation is required detailing how verified protection segments overlap to ensure there is not a gap. This book has grown from a 45-minute paper presentation at the 2001 InterNational Electrical Testing Association (NETA) conference into a decade-long project. What started as a simple paper about protective relay logic for microprocessor based relays has blossomed into a comprehensive training.
