ABB RED670 1MRK004810-CC | Line Differential Protection IED

Description

Key Technical Specifications

• Protection Functions: Line differential (87L), Distance protection (21), High impedance differential (87X)
• Breaker Configuration: Single or Multi-breaker arrangements (Configurable)
• Trip Logic: Three-phase tripping with automatic reclosing & synchrocheck
• Communication Protocols: IEC 61850-8-1, IEC 60870-5-103, LON, SPA, C37.94, G.703
• CT/VT Inputs: Supports up to 6 CT groups and 3-5 line ends (with optional transformer inclusion)
• Measurement Accuracy: Current/Voltage <0.25%, Power <0.5% (Field calibratable)
• Disturbance Recorder: Integrated, records up to 40 analog and 96 binary signals
• Time Synchronization: Built-in GPS, Echo method, or via IEC 61850/SPA
• Engineering Tool: Configured via ABB PCM600 platform (Signal Matrix tool)
• Operating Temperature: -20°C to +60°C (Standard industrial substation rating)
• HMI: Multifunction local Human-Machine Interface with event logging

Product Introduction

The ABB RED670 (1MRK004810-CC) is a versatile feeder and line protection IED (Intelligent Electronic Device) from the Relion 670 series. It is engineered to secure transmission lines using high-speed differential protection (87L) and comprehensive distance protection (21), making it a staple in modern utility and industrial power substations.This specific configuration is typically optimized for single-breaker applications with three-phase tripping. Field engineers appreciate its robust communication stack—native IEC 61850-8-1 support allows for seamless integration into digital substations without extra gateways. Its built-in disturbance recorder captures up to 136 signals, which drastically cuts down post-fault analysis time during grid incidents.

Installation & Configuration Guide

Follow these four phases for a reliable deployment. Always adhere to local substation safety regulations.Phase 1: Preparation (15 min)

• ESD Safety: Wear an anti-static wrist strap. The optical ports and CPU board are highly sensitive.
• Documentation: Have the OEM wiring diagram and the specific PCM600 configuration file ready.
• Physical Check: Verify the catalog number (1MRK004810-CC) matches your Single Line Diagram (SLD) requirements, specifically the CT/VT input count.

Phase 2: Removal / Unboxing (5 min)

• Inspect: Check the module for shipping damage. Ensure the front HMI screen is intact.
• Photo Record: Before installing, take a photo of the rear terminal labels and any pre-set DIP switches (if applicable).
• Rack Prep: Ensure the 19-inch rack or substation panel cutout matches the RED670 standard dimensions.

Phase 3: Installation (15 min)

• Mounting: Slide the unit into the rack and secure it with the four corner screws. The insertion should feel smooth—do not force it.
• Wiring: Connect the CT (Current Transformer) and VT (Voltage Transformer) secondary wires. Crucial: Ensure CT secondary circuits are never left open while energized.
• Comms: Plug in the fiber optic cables for C37.94 or the Ethernet cable for IEC 61850.

Phase 4: Power-On & Test (15 min)

• Verify Voltage: Use a multimeter to check the auxiliary DC supply (typically 24V, 48V, or 110V DC depending on the substation battery). Ensure polarity is correct.
• Power Up: Switch on the auxiliary power. The HMI should light up, and the “Healthy” LED should turn solid green.
• Communication Handshake: Check the local HMI or use PCM600 to verify the IED is communicating with the substation automation system (SAS).

Troubleshooting Quick Reference

Dimensions, Mounting & Wiring Notes

• Dimensions: Standard 1/3 or 1/2 19-inch rack width (Exact HxWxD depends on the specific I/O module count—refer to the 1MRK004810-CC mechanical drawing).
• Mounting Method: Flush or surface mounting in a standard substation control panel.
• Terminal Notes:
  • CT Circuits: Use high-impedance differential protection (87X) settings carefully to avoid CT saturation issues.
  • Fiber Optics: Keep bend radii >30mm for C37.94 fiber cables to prevent signal attenuation.

FAQ

Q: Can I use this RED670 for a multi-breaker (1.5 breaker) scheme?
A: Yes, the RED670 platform supports multi-breaker arrangements. However, the specific 1MRK004810-CC configuration is often optimized for single-breaker applications. You may need to use the PCM600 Signal Matrix tool to reconfigure the binary I/Os and logic for a 1.5 breaker setup.Q: I’m seeing a “CT Supervision” alarm. What does that mean?
A: This usually means the relay detects a mismatch in the current inputs, often due to a blown CT fuse or a broken wire in the secondary circuit. Check the continuity of your CT wiring. It could also be a setting issue if your load current is fluctuating near the supervision threshold.Q: Is this unit compatible with our existing IEC 61850 substation network?
A: Absolutely. This model has a built-in data communication module for the station bus (IEC 61850-8-1). Just make sure you have the correct ICD (IED Capability Description) file to import into your substation automation system.Q: What is the difference between New Original and New Surplus?
A: Both are unused. “New Original” typically means it comes directly from recent ABB production batches with full traceability. “New Surplus” is genuine, factory-sealed stock that has been in a distributor’s warehouse. We perform full functional testing on both to ensure they meet OEM specs.Q: Do I need a special cable to configure this relay?
A: You will need a standard Ethernet cable to connect the RED670 to a laptop running ABB’s PCM600 engineering tool. Ensure your laptop’s IP address is in the same subnet as the relay’s default service IP.Q: What’s the lead time if I need a spare unit urgently?
A: For emergency MRO replacements, we usually have stock available for 24-48 hour dispatch. Since this is a critical protection device, we recommend verifying the exact firmware version requirement with your site engineer before ordering to avoid compatibility delays.