1MRK002810-AB RED670 ABB 765kV Current Differential Relay

1MRK002810-AB RED670 ABB 765kV Current Differential RelayProduct Overview The ABB RED670 (Order Number 1MRK002810 AB) serves as a high performance Intelligent Electronic Device (IED) engineered for the current differential protection (87L) of overhead transmission lines and underground utility cables. Part of the elite Relion 670 series, this unit delivers ultra fast, phase segregated protection for complex power grid topologies up to 765 kV, including multi terminal lines and meshed networks. By evaluating

Flexible Distance Rating: The module supports a 4-slot distance rating from the power supply

Feature Specification User Memory 512 KB (Volatile RAM with Battery Backup) Embedded Digital I/O 16 DC Inputs / 16 DC Outputs (24V DC Sourcing) Embedded Analog I/O 4 Inputs (Diff/Single-ended) / 2 Outputs Analog Resolution 14-bit High-Speed Counters 4 Hardware Counters Communication Ports 1 x EtherNet/IP

which is optimized for use with pre-assembled Telefast cordsets to accelerate cabinet assembly and eliminate wiring errors

ensuring the processor is protected from high-voltage transients

Isolation: 1500 VDC Input-to-Output / Input-to-Chassis

This qualifies the controller for strict safety protocols in explosive environments where capacitors could otherwise act as an ignition source

and start fuel fuel-enrichment limits

Filtering Time: 4 ms typical (Configurable 1–128 ms via software)

A 1000 Vrms isolation rating (0-60 Hz) provides robust line protection against voltage surges

Processor: 32-bit RISC

Status reporting is communicated directly to the master controller via the Slave Expander Bus (SEB)

Its integrated firmware stack handles complex protocol translation while maintaining backward compatibility with existing controller communication drivers