ABB RET670 1MRK004816-AC

Description

ABB RET670 1MRK004816-AC

Product introduction

The ABB RET670 1MRK004816-AC is a state-of-the-art digital protection and control relay designed for high-voltage transmission lines, serving as a critical component in power grid infrastructure. This advanced relay combines precise protection functions with comprehensive control capabilities, ensuring reliable operation and rapid fault clearance in high-voltage networks.

ABB RET670 1MRK004816-AC integrates seamlessly with communication modules like 3BHB045647R0003, enabling real-time data exchange with SCADA systems and substation automation platforms. Its support for IEC 61850, the global standard for substation communication, ensures interoperability with other intelligent electronic devices (IEDs) and controllers such as the PM865K02. Whether deployed in a transmission substation or a renewable energy grid interconnection point, RET670 1MRK004816-AC provides robust protection, advanced monitoring, and flexible control to enhance grid stability and reliability.

Core advantages and technical highlights

Advanced protection algorithms

RET670 1MRK004816-AC features adaptive distance protection algorithms that automatically adjust to changing network conditions, ensuring accurate fault detection even in complex grids with renewable energy integration. In a 400kV transmission line connecting a wind farm to the main grid, this capability allows it to distinguish between temporary faults (which can be cleared with auto-reclosure) and permanent faults (requiring manual intervention), reducing unnecessary outages by up to 40%. The relay’s ultra-high-speed tripping (≤10ms) minimizes fault duration, protecting equipment from damage and maintaining system stability.

Comprehensive communication capabilities

Equipped with native IEC 61850 support and multiple protocol options, RET670 1MRK004816-AC enables seamless integration into modern digital substations. When paired with 3BHB045647R0003, it can transmit real-time fault data, measurement values, and status information to central control centers with sub-millisecond latency. In a smart grid application, this allows operators to visualize network conditions in real time, enabling proactive load management and rapid response to disturbances. The relay’s built-in web server provides easy access to configuration and diagnostic data, simplifying commissioning and maintenance.

Cybersecurity and reliability

RET670 1MRK004816-AC incorporates layers of cybersecurity features, including secure communication (TLS 1.3), role-based access control, and firmware integrity verification, meeting IEC 62351 standards. In critical infrastructure like nuclear power plant switchyards, these features protect against unauthorized access and tampering, ensuring the integrity of protection settings and operational data. The relay’s rugged design, with wide temperature tolerance (-40°C to +70°C) and immunity to electromagnetic interference, guarantees reliable operation in harsh substation environments.

ABB RET670 1MRK004816-AC

Typical application scenarios

Transmission line protection

In a 765kV ultra-high-voltage transmission network, RET670 1MRK004816-AC provides primary and backup protection for long-distance lines, using directional distance elements to accurately locate faults. Its integration with 3BHB045647R0003 enables fast communication with neighboring relays, supporting pilot protection schemes that trip both ends of a line simultaneously for high-speed fault clearance. For example, in a cross-country transmission corridor, this coordination reduces fault current duration, minimizing voltage sags and preventing cascading outages.

Renewable energy grid integration

RET670 1MRK004816-AC is ideally suited for protecting interconnection points between large-scale renewable energy plants (solar, wind) and the main grid. In a 500MW wind farm, it monitors power flow, voltage stability, and frequency, activating protection functions if grid codes are violated. The relay communicates with the PM865K02 controller via 3BHB045647R0003, enabling coordinated control actions such as curtailment or reactive power adjustment to maintain grid stability during sudden changes in wind speed.

Industrial substation protection

In large industrial facilities like steel mills or chemical plants with on-site high-voltage substations, RET670 1MRK004816-AC protects critical feeders and transformers. Its flexible logic programming allows customization of protection schemes to match specific industrial processes, such as enabling fast tripping for faults near sensitive equipment while allowing time-delayed tripping for downstream faults. The relay’s integration with 3BHB045647R0003 ensures that protection events are immediately relayed to the plant’s DCS, triggering appropriate process shutdowns or alarms to prevent equipment damage.

Related model recommendations

• 3BHB045647R0003: Communication module that enhances RET670 1MRK004816-AC‘s connectivity to SCADA and DCS systems via multiple protocols.
• PM865K02: AC800M CPU module that coordinates with RET670 1MRK004816-ACfor integrated substation control and automation.
• RET543 1MRK004563-AA: ABB’s medium-voltage protection relay, complementary to RET670 1MRK004816-ACin mixed-voltage substations.
• 3BHB009884R5211: Digital I/O module used with RET670 1MRK004816-ACfor 扩展 local control functions in substation automation.
• HMI602 1MRK005912-BA: ABB’s human-machine interface panel, providing local visualization and control for RET670 1MRK004816-AC.
• CI854A 3BSE013232R1: Profibus DP module that enables communication between RET670 1MRK004816-ACand legacy devices in retrofitted substations.
• REL670 1MRK004815-AC: ABB’s distribution line protection relay, used alongside RET670 1MRK004816-ACin transmission-distribution interface points.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing RET670 1MRK004816-AC, ensure the substation control panel is clean, dry, and free from vibration. Verify that the mounting surface can support the relay’s weight (approximately 2.5kg) and that ambient temperature remains within -40°C to +70°C. Use copper conductors (1.5-4mm²) for power and signal connections, with appropriate fuses (1A) in the power supply circuit. For integration with 3BHB045647R0003, use shielded Ethernet cables (Cat6A) with shield grounding at both ends to prevent electromagnetic interference. Configure initial IP settings and communication parameters using ABB’s PCM600 software before energization.

Maintenance suggestions: Inspect RET670 1MRK004816-AC semi-annually for loose connections, dust accumulation, or signs of corrosion. Clean the front panel with a dry cloth; avoid using liquids or abrasive materials. Perform monthly self-test routines via PCM600 to verify protection functions and communication with 3BHB045647R0003. Update firmware annually to ensure compatibility with the latest IEC 61850 standards and security patches. In case of protection misoperations, check current transformer (CT) and voltage transformer (VT) connections first, then verify settings against the latest network single-line diagrams. When replacing RET670 1MRK004816-AC, transfer configuration files using a secure USB drive and re-test all protection functions before returning to service.

Service and guarantee commitment

ABB provides a 5-year warranty for RET670 1MRK004816-AC, covering defects in materials and workmanship under normal operating conditions. Our global technical support team, specializing in power system protection, offers 24/7 assistance for configuration, fault analysis, and integration with components like 3BHB045647R0003, with response times within 2 hours for critical issues.

Factory repair services for RET670 1MRK004816-AC include full functional testing and calibration, with a 5-business-day turnaround. For urgent replacements, we offer next-business-day delivery in major power markets. ABB also provides comprehensive training on relay settings, IEC 61850 configuration, and coordination with PM865K02 controllers, ensuring customers maximize the reliability and performance of their protection systems.