ABB RET670 1MRK002816-AC – Advanced Line Differential Protection Relay_ABB_Manufactures_Shenzhen Silk Road XY Technology Co., Ltd

Description

The ABB RET670 1MRK002816-AC is a high-end, multifunctional line protection and control relay engineered for the secure and reliable operation of transmission and sub-transmission power networks. As part of ABB’s Relion® 670 series—a flagship family of IEC 61850-compliant digital relays—the ABB RET670 1MRK002816-AC integrates advanced distance protection, overcurrent backup, fault location, breaker failure detection, and synchrocheck into a single, compact platform. Designed for utilities and industrial power systems operating at voltages from 69 kV to 500 kV, this relay delivers sub-cycle tripping accuracy and robust communication capabilities essential for modern smart grid architectures.

Built on ABB’s proven 670-series hardware platform, the ABB RET670 1MRK002816-AC supports dual redundant Ethernet ports with native IEC 61850 Edition 2, including GOOSE messaging and Sampled Values (SV) over PRP/HSR networks. Its powerful signal processing engine enables precise impedance measurement even during evolving faults or power swings, while built-in oscillography captures pre- and post-fault waveforms for forensic analysis. The ABB RET670 1MRK002816-AC is not merely a protective device—it is a critical intelligence node that enhances grid visibility, accelerates outage restoration, and ensures compliance with NERC PRC-005 and other regulatory standards.

Technical Specifications

Parameter Name	Parameter Value
Product Model	ABB RET670 1MRK002816-AC
Manufacturer	ABB
Product Type	Multifunction Line Protection Relay
Protection Functions	Quadrilateral distance (zones 1–4), directional overcurrent, breaker failure, auto-reclose, fault locator
Input Channels	3× phase CTs, 1× neutral CT, 3× phase VTs, 1× residual VT
Sampling Rate	48 samples/cycle (2.88 kHz at 60 Hz)
Communication Interfaces	2× 10/100 Mbps Ethernet (IEC 61850-8-1 GOOSE, MMS, SV), RS-485 (Modbus RTU), IRIG-B
Redundancy Support	Dual power supply inputs (88–265 V DC/AC), PRP/HSR-ready
Operating Temperature	–25°C to +55°C (extended range available)
Power Supply	88–265 V DC or 100–240 V AC, 50/60 Hz
Mounting	Flush or surface mount (19″ rack compatible)
Certifications	IEC 60255, IEEE C37.94, IEC 61850-9-2 LE, CE, UL

Main Features and Advantages

Adaptive distance protection with power swing blocking: The ABB RET670 1MRK002816-AC employs dynamic load encroachment logic and multi-blinder schemes to distinguish between genuine faults and stable power swings—preventing unnecessary tripping during system stress while maintaining high-speed response to close-in faults.

Integrated fault location with<1>ABB RET670 1MRK002816-AC calculates fault distance within seconds, reducing crew dispatch time by up to 70%. This feature is especially valuable for long overhead lines in remote terrain.

Cyber-secure by design: The ABB RET670 1MRK002816-AC enforces role-based access control (RBAC), secure firmware updates, and audit logging per IEC 62351. All IEC 61850 communications support TLS/SSL encryption when deployed in segmented OT networks.

Seamless digital substation integration: With native support for Sampled Values (IEC 61850-9-2 LE) and GOOSE, the ABB RET670 1MRK002816-AC eliminates copper CT/VT wiring in process bus architectures. Its dual Ethernet ports enable ring or star topologies with zero recovery time using PRP.

Local intelligence and diagnostics: The front-panel color display allows operators to view real-time phasors, event logs, and trip records without external tools. Built-in self-monitoring checks CT/VT integrity, memory health, and communication status—alerting before failures occur.

Long-term lifecycle support: ABB provides configuration migration tools from legacy REL5xx/6xx relays, ensuring the ABB RET670 1MRK002816-AC can modernize existing substations without rewiring or re-engineering protection schemes.

Application Field

The ABB RET670 1MRK002816-AC is the protection relay of choice for high-voltage transmission corridors, interconnect ties, and industrial microgrids where reliability and speed are paramount. In regional transmission organizations (RTOs), it secures 230 kV double-circuit lines against phase-to-phase and phase-to-ground faults, coordinating with adjacent zone relays via GOOSE for ultra-fast isolation. At mining or petrochemical complexes with captive power plants, the ABB RET670 1MRK002816-AC protects feeders connecting generation to process loads, using synchrocheck to safely reconnect after islanding events.

For renewable integration, wind and solar farms deploy the ABB RET670 1MRK002816-AC on collector feeders to provide sensitive ground fault detection and anti-islanding protection—critical for grid code compliance. In urban distribution substations undergoing digital transformation, the relay’s IEC 61850-9-2 capability enables full process bus implementation, reducing copper costs and improving scalability.

Utilities upgrading aging electromechanical or early solid-state relays often select the ABB RET670 1MRK002816-AC as a future-proof replacement that consolidates multiple discrete functions (distance, O/C, recloser, fault locator) into one maintainable unit. In every deployment, the ABB RET670 1MRK002816-AC strengthens grid resilience while simplifying engineering and maintenance workflows.

Installation and Maintenance

Pre-installation preparation: Before mounting the ABB RET670 1MRK002816-AC, verify that CT/VT ratios match the configured settings in PCM600. Ensure both power supply inputs (if used redundantly) are isolated and within 88–265 V range. Route Ethernet cables away from high-voltage conduits to avoid EMI; use shielded CAT6 with proper grounding at the cabinet. Confirm IEC 61850 network topology (PRP, HSR, or standard) and assign unique IP/MAC addresses prior to energization.

Maintenance recommendations: The ABB RET670 1MRK002816-AC requires no periodic calibration, but its event and disturbance records should be reviewed quarterly. Perform functional tests annually using secondary injection through the test plug. Keep firmware aligned with your utility’s cybersecurity baseline—ABB regularly issues patches for protocol vulnerabilities. Clean the front display and ventilation slots with a dry, lint-free cloth. Always back up the configuration (.CID file) before any maintenance; restoring settings incorrectly can compromise protection coordination.

ABB RET670 1MRK002816-AC – Advanced Line Differential Protection Relay