Product Overview

The RED670 (1MRK004810-AB) is a high-performance numerical IED (Intelligent Electronic Device) optimized for the high-speed protection of transmission lines in medium- and high-voltage power networks. As a key component of the ABB Relion 670 series, the RED670 (1MRK004810-AB) provides phase-segregated line differential protection combined with full-scheme distance protection zones. This dual-capability ensures sub-cycle fault detection and isolation, maintaining grid stability during complex disturbances. Engineered for the modern digital substation, it features native support for IEC 61850 communication, enabling deterministic data exchange for pilot-wire and fiber-optic protection schemes while providing comprehensive measurement and monitoring functions for critical infrastructure.

Detailed Technical Specifications

• Manufacturer: ABB

• Model Designation: RED670

• Part Number: 1MRK004810-AB

• Product Series: Relion 670 Protection and Control

• Device Type: Distance and Line Differential Protection Relay

• Protection Logic: 5-zone distance protection (phase-to-phase and phase-to-ground), line differential protection, directional overcurrent, and breaker failure logic

• Fault Location Accuracy: Precision fault locator (provides distance in km, miles, or percentage of line length)

• Measurement Precision: High-accuracy monitoring of active/reactive power, energy, frequency, voltage, and current

• Rated Current Input: 1 A or 5 A (Selectable via software/hardware configuration)

• Rated Voltage Input: Up to 110 V AC (Standard VT secondary circuit)

• Nominal Frequency: 50 / 60 Hz (Adaptive tracking)

• Auxiliary Power Supply: Wide-range universal 24–250 V DC or 48–240 V AC

• Binary I/O Configuration: Multiple programmable digital input and output channels for status feedback and trip signaling

• Communication Protocols: IEC 61850-8-1 (Ed. 1 & 2), IEC 60870-5-103, Modbus RTU/TCP, DNP3

• Time Synchronization: SNTP, IRIG-B, and GPS (IEEE 1588 PTP supported)

• Interface: Local HMI with high-resolution LCD, keypad, and programmable LEDs

• Operating Temperature: -25°C to +70°C

• Dimensions (WxHxD): Approximately 190 mm x 170 mm x 200 mm

• Weight: 3.0 kg

• Standards Compliance: IEC 60255 series, CE, UL Listed