Product Core Brief
- Model: RET620
- Brand: ABB
- Series: Relion 620
- Core Function: Protects and controls power transformers.
- Type: Transformer Protection IED
- Key Specs: Stabilized differential protection, IEC 61850 support, two- or three-winding applications
Condition: New Original (New Surplus) — not refurbished. Verify specific ordering code for your configuration.
Product Introduction
Transformer protection in distribution networks demands both speed and stability. The ABB RET620 serves as a dedicated IED for protection, control, measurement, and supervision of two- or three-winding power transformers and generator-transformer blocks.
In field deployments of 620 series units, this relay provides reliable differential protection with harmonic restraint while handling thermal overload and backup functions. Honestly, the flexible configuration options make it suitable for varied substation layouts. Bottom line — it works when settings match your transformer nameplate data.
