Micom 821 Breaker Failure Protection

Product Description

MiCOM P821

Breaker FailureProtection

Features

MiCOM P821 is an Advanced Breaker Failure and protectionrelay based on the latest numerical technology.

MiCOM P821 provides enhanced protection due to the advanced numericaltechnology used in its design. It is highly reliable and flexible, and can beused with any application.

Wide monitoring capacities for maximum control

MiCOM P821 offers a range of protection functions, combinedwith extensive monitoring capacities, for optimum efficiency and maximumcontrol of electrical schemes. An enhanced breaker failure protection functionprovides back up protection when the primary circuit fails to isolate the fault.

While this numerical relay is designed as a phase segregated detection devicefor EHV/HV/MV levels, it is also flexible enough for all voltage ranges and canbe 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 breakerfailure protection (tBF1 & tBF2).

Reliable detection, easy to program

MiCOM P821 ensures reliable phase segregated detection for1/3 pole breaker tripping, and is suitable for all voltage levels. It alsoprovides sensitive residual current detection and boast a fast RESET time.Equipped with one or two-stage CB failure, it is easy to program with thestandard MiCOM Px20 setting procedure.

Contractual warranty

Period : 2 years