Application

The RED 670 IED is used for the protection, control and monitoring of overhead lines and cables in all types of networks. 

The IED can be used up to the highest voltage levels. 

It is suitable for the protection of heavily loaded lines and multi-terminal lines where the requirement for tripping is one-,two-, and/or three pole. 

The IED is also suitable for protection of cable feeders to generator block transformers.

The phase segregated current differential protection provides an excellent sensitivity for high resistive faults and gives a secure phase selection.

The availability of six stabilized current inputs allows use on multi-breaker arrangements in three

terminal applications or up to five terminal applications with single breaker arrangements.

Remote communication based on the IEEE C37.94 standard can be redundant when required for important installations. 

Charging current compensation allows high sensitivity also on long overhead lines and cables.

A full scheme distance protection is included as independent protection or as back-up at remote end communication failures. 

Eight channels for intertrip and binary signals are available in the communication between the IEDs.