The relay protection tester is connected to a 220V AC power supply, and the grounding wire jack is reliably grounded. List of regulations and Clauses which do not apply to existing Electrical Installations 107 A5. (b) Locally Earthed System (TT) 109 A5. Our testing equipment is specifically designed to provide comprehensive assessments, allowing you to verify the functionality. The handbook for protection engineers includes guidelines on protective circuitry, protective relay principles, and testing procedures for switchgear and relays. If applicable, documentation is required detailing how verified protection segments overlap to ensure there is not a gap. Primary Injection Test Kit – for injecting large currents directly into CT circuits. Clamp Meter – used for non-intrusive current measuring.
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