Autotransformer motor starters (295 up to 375 kW at 415V)

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Description

Standard power
rating of 3-phase
motors
415V
Line
contactor c/w
aux. Contacts
(1)
Transfomer
contactor c/w
timer
(1)
Star
contactor c/w
aux. Contacts
(1)
Thermal
overload
(to befixed
on delta) (2)
kW HP Amp Reference Reference Reference Reference
295 400 500 LC1G500KUEN
LADN22
LC1G400KUEN
LADN11
LADT2
LC1D115U7 LR9G500
300 410 510 LC1G630KUEN
LADN22
LC1G400KUEN
LADN11
LADT2
LC1D150U7 LR9G630
375 500 635 LC1G800KUEN
DR5TE4U
LADN22
LC1G500KUEN
LADN11
LADT2
LC1G185KUEN LR9G630

1) Selection is based on 65% transformer tapping
2) Starting time < 15 seconds
3) Magnetizing current = 0.25In
4) No of peak starts per hour = 6 operations maximum subjected to transformer specification
5) Peak current at closing of KM3 < 7√2In
6) Starting current/ratd motor current = 6
7) Ambient temperature < 40°C