Product Core Brief
- Model: RET316
- Brand: ABB
- Series: RET 316*4
- Core Function: Protects power transformers numerically.
- Type: Transformer Protection Relay
- Key Specs: Differential protection (87T), multi-winding support, numerical algorithms
Condition: New Original (New Surplus) — not refurbished. Older series — limited stock. Verify compatibility with current systems.
Product Introduction
Transformer faults during peak load demand fast, selective response. The ABB RET316 functions as a numerical protection relay for two- or three-winding power transformers, including autotransformers and generator-transformer units. It delivers comprehensive monitoring and control in utility and industrial substations.
In field deployments of RET 316*4 systems, this relay excels at through-fault stability while providing sensitive internal fault detection. It integrates differential, overcurrent, and thermal functions effectively. Honestly, the design choice for modular analog inputs proves practical for varied transformer setups.







