Description
Technical Specifications
- Product Model: RET670 VERSION2.2
- Brand: ABB (Relion 670 Series)
- Warranty: One Year
- Input Voltage: 48‑250 V DC / 110‑240 V AC auxiliary supply
- Operating Temperature: -40 °C to +70 °C
- Storage Temperature: -40 °C to +85 °C
- Response Time: ≤15 ms transformer differential trip operate time
- Protection Class: IP40 front panel, IP20 rear terminal area
- Accuracy Class: Class 0.2S for metering and protection‑grade measurement
- Output Frequency: 50 / 60 Hz adaptive power‑system frequency support
- Rated Current Range: 1‑5 A CT secondary input
- Communication Interface: Multi‑port Ethernet, RS485 serial ports, local HMI interface
- Supported Protocols: IEC 61850 MMS/GOOSE/SV‑9‑2LE, HSR, IEC 60870‑5‑103, DNP3.0, SPA, Modbus TCP
- Overload Capacity: 10× rated continuous current for 1 second short‑time withstand
- Dimensions: 266 mm × 448 mm × 230 mm (6U full‑size 19‑inch rack‑mount unit)
Product Overview
The ABB RET670 VERSION2.2 is a multifunctional transformer‑protection IED and bay controller within the Relion 670 product family. This firmware‑version‑2.2 intelligent electronic device integrates transformer differential protection, overcurrent/earth‑fault protection, voltage supervision, breaker control, disturbance recording, metering and user‑configurable CFC logic within one rack‑mounted hardware unit. It addresses typical substation pain points such as magnetizing‑inrush false tripping, complex digital‑substation protocol interoperability, limited time‑synchronisation precision and fragmented bay‑level control hardware. Protection engineers, substation integrators and utility‑site maintenance teams gain tangible operational value from this IED. Version 2.2 adds HSR redundancy, IEC 61850‑9‑2LE process‑bus sampled‑value support and enhanced PTP time‑synchronisation performance for digital‑substation deploymentsABB Group. It fits green‑field substation construction, bay‑control integration and legacy‑system retrofit projects for two‑winding and three‑winding power transformers.
Application Scenarios
- Main & Backup Protection for Power Transmission Transformers: Deployed as primary differential protection for two‑winding and three‑winding station transformers. Inrush‑restraint logic prevents nuisance tripping during transformer energisation, while backup overcurrent and earth‑fault functions provide layered protection for winding and bushing faults.
- Digital‑Substation Bay‑Level Control & Monitoring: Operates within IEC 61850‑based digital substations. It receives process‑bus sampled values, executes protection algorithms locally, exchanges GOOSE inter‑bay signalling and provides breaker‑control logic without hard‑wired binary‑intertrip cabling.
- Generator‑Step‑Up Unit Transformer Protection: Applied for generator‑step‑up transformer bays inside power‑generation plants. It handles through‑fault detection, winding‑fault discrimination and interfaces with generator‑protection IEDs for coordinated tripping sequences during plant‑wide disturbance events.
- Substation Retrofit & Modernisation Projects: Replaces older numerical or electromechanical transformer‑protection relays. Version‑2.2 protocol stack enables integration into both conventional hard‑wired substations and newly built digital‑substation automation systems, reducing cabinet‑rework scope during upgrade cycles.
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