Description

ABB RET670 – Transformer Protection Relay

Product Overview

RET670 is a dedicated numerical protection and control IED designed for power transformers. It integrates differential protection, over‑current, over‑voltage and thermal supervision functions to detect internal transformer faults and trigger fast circuit breaker tripping. This intelligent relay prevents transformer damage caused by short‑circuits and overloads in power generation and transmission facilities.

Technical Specifications

• Brand: ABB
• Model: RET670
• Warranty: One Year
• Condition: 100% New & Original
• Function: Transformer differential & backup protection, monitoring, control
• Communication: IEC 61850, Modbus, SPA bus
• Operating Temp: -25 °C ~ +70 °C
• Mounting: Standard 19‑inch protection rack

Application Scenarios

• Thermal Power Station: Main power transformer primary and backup protection
• Heavy‑Industry Substation: Distribution transformer fault detection and tripping control
• Solar Power Plant: Step‑up transformer protection for renewable energy grid connection