Saturday, February 21, 2009

j)Mounting position changed

Mounting position changed

QUESTION:

Which technical consequences shall be considered if mounting position other than standard is used?

ANSWER:

Operating the contactor at other than standard mounting position is subject to following restrictions:

- drop out voltage of contactor is reduced.
- shock resistance in OFF position is a little lower
- mechanical lifetime is slightly reduced
- electrical lifetime is not or neglectible influenced
- risk of contact welding is increased by "slow" opening (under incidence of residual currents or under use of free wheeling diode) and by voltage drops.



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