AAB RET521 Transformer Protection Terminal Servo Valve Terminations: Available with local or

Terminations: Available with local or remote terminations

designed as a component of the Bailey Infi 90 Systems

and thermal protection

Its working principle is to convert the input AC power into the output DC power to meet the power demand of the equipment

High-impedance (HIZ) fault detection

AAB RET521 Transformer Protection Terminal Servo Valve Terminations: Available with local orDescription The AAB RET521 is a transformer protection terminal designed for fast, selective, and reliable protection of power transformers in utility and industrial networks. Specifications Application: Transformer differential and backup protection Rated Voltage: Supports common medium and highvoltage transformer applications Current Inputs: Multiple CT channels for differential and overcurrent functions Voltage Inputs: VT channels for voltagebased