{PDF} Alstom MiCOM P211 – Three-phase LV Motor Protection Relay. Short Technical Description

Alstom, Electronic Edition, 2002. ? 8 pages.
Publication P211/EN BR/Aa.???? ?????? ?????????? ????????????????? ?? 1000 ?.
??????? ??????????? ???????? ?? ?????????? ?????.The protection device is designed to protect three-phase motors against: overload, shor-circuit fault (phase-to-phase, rotor stall), earth fault, underload (e.g. no-load running of a pump), current unbalance of feeders, operation with a phase loss and overheating. It can control a circuit-breaker or contactor. Thanks to communication port implemented in the relay, it can exchange information with a supervisory system in terms of measurements, relay state, switches control, etc.Table of Contents:Main features.
Protection features.
Overload.
Underload.
Unbalance.
Loss of phase.
Over-temperature.
Eearthfault (option).
Short circuit / long startings.
Technical Data.
Analogue inputs.
Protection features.
Relay outputs.
Inputs.
Environmental conditions.
Communication.
Dimensions.
Connection diagram.
Ordering information.
Alstom T&D protection & control business contact addresses.