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Grading Protection – Fault current devices discrimination

Dr. Brown of Fraser George and Associates, is presently helping in a matter concerning an explosion in a 33/11 KV substation where inherent electrical fault current protection devices have failed, provoking a study of the grading protection, i.e. fault current device discrimination of the substation electrical network.

A grading protection scheme is the consecutive time/current settings of fault protection devices such as circuit breakers fuses etc., so that in the event of a fault, the smallest possible part of the system is isolated.

Eur Ing Dr Robert Brown (Robert) is the Executive Director of Fraser George and Associates Limited and is a Consultant and Forensic Engineer in the fields Electrical Electronic and Control Engineering.

Robert is an accomplished professional Expert Witness having prepared and presented many court compliant reports and presented oral evidence within the High Court, Crown Courts and County Courts.

For further information please contact Robert via;

Email,… or

Tel Land: +44 (0)1777 709175

Tel Mobile: +44 (0) 7976250624

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