Francais

Power clamps

Overcurrents

Overcurrents cause considerable increase of contact pressure by mutual inductance.


This prevents  :
  - contacts repulsion,
  - risks of contact soldering ,
  - risks of priming.

 

Motor startup

The characteristics of moving contacts are improved during motor start up and allow to obtain the following overcurrents  :

  • 1 contact  (Nominal current = 125 A) ; Icw = 1 000 A/22,1 sec.

  • 3 contacts (Nominal current =400 A) ; Icw = 3 200 A/10,5 sec.


Brevet Holec

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