The  MiCOM  P22x  protection  relay  range  is  designed  for  motor  protection applications.  A  complete  set  of  protection  functions  is  performed  on  the measurement  of  current,  voltage*  and  temperature.  In  addition  to  these  basic functions,  the  relay  carries  out  a  large  number  of  other  functions  that  enable  it  to protect  and  run  the  motor  more  effectively.

The  reliability  of  the  system  is  further  enhanced  via  checks  on  bus  voltage  prior  to start-up*  during  reacceleration,  supervision  of  trip-circuit  wiring  continuity  and protection  against  circuit-breaker  failure.

The  MiCOM  P22x  protection  relay  range  is  particularly  adapted  to  oil  refinery, chemical  plant,  metallurgy,  glass  and  cement  manufacturing,  paper  mills,  electrical and  mechanical  engineering,  food  production,  mining  etc.  It  is  also  suitable  for  water treatment  and  in  pumping  stations  as  well  as  in  steam  power  plants.

On  top  of  that  high  inertia  loads  and  anti-backspin  protection  ensures  that  the  rotor stops  before  the  motor  can  be  re-started.

For  motors  whose  current  supply  contains  a  considerable  degree  of  distortion,  the relay  provides  a  true  RMS  base  thermal  image  allowing  efficient  protection  against overload  phenomena  due  to  the  presence  of  harmonic  components.

The  addition  of  power  measurement*  and  energy  metering*,  and  the  presence  of analogue  outputs  (current  loop)  make  the  MiCOM  P22x  protection  relay  range  a highly  competitive  and  effective  equipment  in  terms  of  protection