RED670 1MRK004810-KG Line differential protection

Description

RED670 1MRK004810-KG Line differential protection

RED670 is used for the protection, control and monitoring of overhead lines and cables in all types of networks. The IED can
be used from distribution up to the highest voltage levels. It is suitable for the protection of heavily loaded lines and multiterminal lines where the requirement for tripping is one-, two-,
and/or three-phase. 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 per phase allows use on multi-breaker arrangements in
three terminal applications or up to five terminal applications with single breaker arrangements. The communication
between the IEDs involved in the differential scheme is based on the IEEE C37.94 standard and can be duplicated for
important installations when required for redundancy reasons.
Charging current compensation allows high sensitivity also on long overhead lines and cables.
A full scheme distance protection is included to provide independent protection in parallel with the differential scheme in
case of a communication channel failure for the differential scheme. The distance protection then provide protection for
the entire line including the remote end back up capability either in case of a communications failure or via use of an independent
communication channel to provide a fully redundant scheme of protection (that is a second main protection scheme). Eight
channels for intertrip and other binary signals are available in the communication between the IEDs.

RED670

A high impedance differential protection can be used to protect T-feeders or line reactors.
The auto-reclose for single-, two- and/or three phase reclosing includes priority circuits for multi-breaker arrangements. It

cooperates with the synchronism check function with high-speed or delayed reclosing.
High set instantaneous phase and earth overcurrent, four step
directional or un-directional delayed phase and earth overcurrent, thermal overload and two step under- and
overvoltage functions are examples of the available functions allowing the user to fulfill any application requirement.
The IED can also be provided with a full control and interlocking functionality including co-operation with the synchronism
check function to allow integration of the main or back-up control.

Please contact Sunny sales@xiongbagk.cn for the best price.

➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
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