The ABB REL670 1MRK004812-DC is a sophisticated Intelligent Electronic Device (IED) engineered for the protection, monitoring, and control of overhead transmission lines and cables. As a core component of the ABB Relion® 670 series, it provides high-speed, selective, and reliable distance protection for various voltage levels in power networks.

Technical Specifications

Feature	Specification
Product Model	REL670 1MRK004812-DC
Protection Type	Distance Protection
Operating Frequency	50/60 Hz
Communication	IEC 61850 compliant
Dimensions (Approx.)	6U, 1/2 of 19″ rack width
Weight	Approximately 10–12 kg (varies by configuration)
Origin	Sweden / Switzerland
Mounting	Flush or Rack-mounted

 

Application Areas

• Transmission Lines: Suitable for single and multi-terminal overhead lines and underground cables.
• Power Grids: Integrated into HV and EHV substations for secure fault detection.
• Smart Substations: Designed for modern digital substations utilizing IEC 61850 station bus protocols.
• Grid Stability: Provides backup protection for transformers and busbars when configured within a larger protection scheme.

 

Product Usage Guide

1. Installation: Secure the IED in a standard 19-inch rack. Ensure proper grounding to prevent electromagnetic interference.
2. Configuration: Use the PCM600 (Protection and Control IED Manager) software to configure the protection logic and set relay parameters according to your specific line impedance data.
3. Testing: Perform a secondary injection test before energizing the line to verify trip times and distance zone reaches.
4. Commissioning: Verify all binary inputs/outputs and communication links with the SCADA system.

 

Frequently Asked Questions (Q&A)

Q: What is the primary function of the REL670? A: Its primary function is distance protection, which detects faults by measuring the impedance between the relay location and the fault point.

Q: Does this model support IEC 61850? A: Yes, the REL670 series is fully compliant with IEC 61850 standards for interoperability in digital substations.

Q: How do I update the firmware? A: Firmware updates are managed through the PCM600 software tool via the front-mounted Ethernet or USB port.

 

Recommended Stock Inventory

Item No.	Model Number	Description
1	REL670 1MRK004812-AB	Line distance protection
2	REL670 1MRK004812-DC	Enhanced distance protection module
3	RET670 1MRK002422-AC	Transformer protection IED
4	REB670 1MRK002432-BD	Busbar protection
5	REC670 1MRK002442-BA	Control IED
6	RED670 1MRK002452-AC	Line differential protection
7	RES670 1MRK002462-AD	Phasor Measurement Unit (PMU)
8	REQ670 1MRK002472-AB	Breaker protection
9	REX670 1MRK002482-AC	Generator protection
10	REF670 1MRK002492-BC	Feeder protection