Direct-on line connection/Delta connection
Direct-on line connection
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- Rated current Ie of the DM4 corresponds to
the motor current IN
- 3 cables to the motor
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Delta connection
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- Rated current Ie of the DM4 corresponds to
58 % of the motor current IN
- 6 cables to the motor (as with a
star-delta starter)
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Advantage of the delta connection
In this type of connection, the individual phases
of the DM4 are switched in series with the
individual motor windings (6-conductor connection as
with a star-delta starter).
In this connection, the softstarter only has to
carry about 58 % of the motor rated current,
therefore a much smaller device can be used.
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