ABB REC670*1.2-B30X00 | Feeder Protection & Control Relay IEC 61850

Description

Product Introduction

The ABB REC670 is a flagship Feeder Protection and Control Relay within the Relion® 670 series, engineered for the demanding needs of modern medium-voltage distribution networks. It goes beyond basic protection by integrating comprehensive condition monitoring and advanced diagnostic capabilities. For engineers dealing with critical infrastructure, the REC670 provides peace of mind through its rigorous self-check mechanisms. Upon power-up, it executes a complete self-test diagnosis in under one second, ensuring the unit is fully operational before activating any outputs.What makes the REC670 particularly reliable in automation scenarios is its intelligent handling of fault conditions. It distinguishes clearly between “Alarms” (warnings that do not interrupt operation) and “Trip/Shutdown” conditions. If a critical trip condition is detected, the relay can be programmed to force the actuator to a predefined safe state—such as shutting off power, or moving to a minimum (0%) or maximum (100%) position. Once the fault clears, it automatically returns to normal operation without needing a manual reset command, which is a huge plus for remote or unmanned substations.

Key Technical Specifications

• Product Model: REC670*1.2 (Relion® 670 Series)
• Core Application: Protection and control of overhead lines and cable feeders in distribution networks
• Diagnostic Features: Power-up self-test (<1 second) and continuous online diagnostics
• Trip Logic: Programmable trip actions (Disable Power, Go to 0%, or Go to 100%)
• Alarm Handling: Non-latching alarm conditions with automatic return to normal state
• Communication: Full fault diagnosis indication via communication ports (e.g., IEC 61850, Modbus)
• Output Control: Discrete outputs for indicating OFF or Alarm status
• Actuator Control: Integrated H-Bridge output control for direct actuator management
• Condition Monitoring: Logs driver alarms and trip conditions for predictive maintenance
• Standard Compliance: Meets rigorous industrial wiring and EMC standards (IEC 60204-1)

Installation & Wiring Guide

Phase 1: Safety & Preparation (Estimated time: 30 mins)

• Safety First: Ensure the entire system is de-energized and the main switch is locked out/tagged out (LOTO). This is critical during maintenance or installation.
• Emergency Stop: Verify that the emergency stop circuit is accessible and that the power contactor can be reliably opened via the emergency stop button.
• ESD Precautions: If handling internal modules or cards, use a grounded wrist strap to release static electricity before touching any components.

Phase 2: Wiring Best Practices (Estimated time: 60 mins)

• Cable Separation: To maximize interference immunity, strictly separate power cables from control cables. ABB recommends maintaining a minimum distance of 200mm between them.
• Shielding: Use shielded cables for critical signals. The shield should be grounded at both ends using large-area (low impedance) connections, preferably with metallized connector shells or shield clamps.
• Brake Control: If using motor power cables that include cores for brake control, these specific cores must be individually shielded.
• Cable Routing: When routing wiring outside the control cabinet, ensure cables are laid durably (e.g., in cable ducts/conduits) to prevent external physical damage.

Phase 3: Power-Up & Diagnostics (Estimated time: 30 mins)

• Visual Check: Before applying power, double-check all wiring against the schematic, ensuring correct terminal assignments and secure grounding.
• Power-Up Self-Test: Apply the auxiliary voltage. The REC670 will automatically perform its power-up self-test (takes less than 1 second). Ensure no diagnostic errors prevent the H-Bridge output from activating.
• Online Monitoring: Once running, monitor the discrete outputs and communication logs. Verify that the relay correctly annunciates any alarm conditions and that trip logic responds as programmed (e.g., driving the actuator to the safe position).
• Troubleshooting Tip: If a diagnostic error occurs during power-up, the outputs will remain disabled. The only way to clear this specific error state is to cycle the power (power down and power up again).