Alstom Motor Protection relay Agile P253 (Numerical relay)

Product Description

Technical Specification

The Agile P253 provides basic motor protection for small and medium size MV/LV motors. It includes a wide range of measurements for motor supervision and operations including starting current record, and features flexible SCADA communication options such as Modbus/IEC 60870-5-103 or DNP3.0.

The principal protection functions include thermal overload, negative sequence over current, loss of load, prolonged start, locked rotor (starting / normal running), restricted earth fault, excessive number of starts and speed switch input. Additional versatility is provided through backup over current and earth fault protection, with up to 3 independent stages, breaker fail and trip circuit supervision functions. The hardware capability is broadened by a sensitive earth fault CT option.

The user may assign any of the logical/physical statuses to binary inputs, outputs and programmable LEDs. All the output contacts are changeover type for ease of implementing the desired wiring schematic.

Key Features