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  Protective Device Coordination Study  
Recent Protective Device
Coordination Study Projects
Protective devices detect an overload or short circuit in a power system component and, if found, remove the component from the power system. 

A protective device coordination study is performed to:
 

  • Select proper protective devices (relays, circuit breakers and fuses).
     
  • Calculate protective relays and circuit breaker trip unit settings.
A protective device coordination study is performed either during the design state of a new system, to verify the protective devices will operate correctly in an existing system, or when the protective devices are not operating correctly. 

Objectives of the study are:

  1. Prevent damage to the faulty components.

  2.  
  3. Minimize the damage to the faulty components

  4.  
  5. Selectively isolate the faulty component so a minimum non-faulty components are removed.
 
 
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