Klockner Moeller Electric Parts from KlocknerMoeller.net
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Electronic motor starters and drives
Basics of drives engineering |
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Soft Starters and classification
type to IEC/EN 60947-4-3
The following classification types are defined in IEC/EN 60947-4-3,
8.2.5.1:
Type “1” coordination
In type “1” coordination, the contactor or soft starter must not
endanger persons or the installation in the event of a short-circuit and
does not have to be capable of continued use without repairs or parts
replacements.
Type “2” coordination
In type “2” coordination, the contactor or soft starter must not
endanger persons or the installation in the event of a short-circuit and
must be capable of continued use without repairs or parts replacements.
For hybrid control devices and contactors, there is a risk of contact
welding. In this case the manufacturer must provide appropriate
maintenance instructions.
The coordinated short-circuit protection device (SCPD) must trip in the
event of a short-circuit. Blown fuses must be replaced. This is part of
normal operation (for the fuse), also for type “2” coordination.
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