Wide monitoring capacities for maximum control

MiCOM P821 offers a range of protection functions, combined with extensive monitoring capacities, for optimum efficiency and maximum control of electrical schemes. An enhanced breaker failure protection function provides back up protection when the primary circuit fails to isolate the fault.

While this numerical relay is designed as a phase segregated detection device for EHV/HV/MV levels, it is also flexible enough for all voltage ranges and can be applied to any application.
The MiCOM P821 can use either single-stage breaker failure protection (tBF1) for back up protection to the local circuit breaker, or two-stage breaker failure protection (tBF1 & tBF2).

Reliable detection, easy to program

MiCOM P821 ensures reliable phase segregated detection for 1/3 pole breaker tripping, and is suitable for all voltage levels. It also provides sensitive residual current detection and boast a fast RESET time. Equipped with one or two-stage CB failure, it is easy to program with the standard MiCOM Px20 setting procedure.

Associated Training Courses

	MiCOM Px20 & Px40 Master Class
	MiCOM Px20 Px30 Px40 Master Class
	All Training Courses