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ABB RET620 – Transformer Protection and Control Relay

ABB RET620 – Transformer Protection and Control Relay

  • Manufacturer: ABB

  • Product No.: RET620

  • Condition：in Stock

  • Product Type: Transformer Protection and Control Relay

  • Product Origin: Switzerland

  • Payment:T/T, Western Union

  • Weight: 5500g

  • Shipping port: Shanghai/Yiwu/Shenzhen

  • Warranty: 12 months

ABB RET620 – Transformer Protection and Control Relay

Product Description

The ABB RET620 is an advanced transformer protection and control relay, developed as part of ABB’s Relion® product family. Designed for power and step-up transformers, the RET620 delivers a complete suite of protection, control, measurement, and supervision functions.

This device ensures safe, reliable, and efficient transformer operation in power distribution systems. With its compact, withdrawable-unit design, installation, commissioning, and maintenance are straightforward. Additionally, the RET620 supports voltage regulation for transformers equipped with on-load tap changers, enhancing system stability.

The relay is fully IEC 61850-compliant, supporting modern substation automation. Its wide protocol support ensures seamless integration into both utility and industrial networks.

Technical Specifications

Parameter Specification
Maker ABB
Model RET620 (IEC)
Product Type Transformer Protection and Control Relay
Dimensions (W × H × D) 192 × 186 × 230 mm (approx.)
Weight Approx. 3.5 – 5.5 kg
Input Voltage 110–220 V AC/DC
Rated Frequency 50/60 Hz
Operating Temperature -20 °C to +60 °C
Protection Functions Differential (87T), Overcurrent (50/51), Earth Fault (50N/51N), Thermal Overload (49), Overexcitation (V/Hz)
Communication Protocols IEC 61850, Modbus RTU, DNP3
Mounting Type DIN rail or panel mounting
Display 128 × 64 LCD graphical display

 

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