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Products & Services

ALSTOM - Protection Relay MCAG

MCAG relays provide high-speed differential protection for various types of power system plants including generators, reactors, busbars, motors and the individual windings of power transformers.
Basic description:

  • Current-calibrated busbar differential 
  • Attracted armature design with simple and robust construction High impedance protection principle

Key customer benefits:

  • High stability during through faults 
  • Operation is fast and reliable (25ms at 5 x setting) 
  • Easy integration into 4U height MIDOS rack schemes 
  • Highly-tuned to the fundamental to prevent spurious operation

Main characteristics:

  • 3 element relay supplied in a 30TE (size 6 inch) case 
  • Supplied with a stabilising resistor 
  • Optional Metrosil available to limit CT saturation voltage 
  • Use with MVTP where scheme buswire supervision is required

 

http://www.alstom.com/grid/products-and-services/Substation-automation-system/protection-relays/MCAG/






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