MiCOM P846

MiCOM P846 is an Open Line Detection relay providing fast detection for local and remote end opening.

A robust transmission system is critical for the transport of power from generating stations to demand centers. Today, with system loading much closer to design limits, the loss of a transmission corridor could unbalance the grid, risking power swings or even unwanted cascade tripping. The MiCOM P846 quickly detects open lines and initiates a safe, efficient defense plan.

Open-line detection with no auxiliary contacts

MiCOM P846 detects local or remote end breakers open in 2 cycles. This open line detection does not rely on any auxiliary contact indications, or any teleprotection channel from the remote line end. It is therefore highly reliable. As a result, the utility can ensure automatic initiation of a defense plan if one or several open lines - loss of a power corridor – are detected.

Reliability, safety and speed

MiCOM P846 ensures fast, open line detection for local and remote end opening, with no use of CB auxiliary contacts. Applied equally to heavy and light load flows, this T&D relay device is simple and secure.