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M-7
© FANTECH
2016
CONTROLLERS, VSD, SENSORS & RUN-ON TIMERS
The SD1-S unit is a star/delta switch designed for use with
three-phase star/delta motors. Speed change is approximately in the
ratio of 1.3:1 and the power saving is up to 50%.
The SD1-S switch is suitable for the entire range of three-phase two
speed star/delta external rotor motors used on the backward-curved
centrifugal fan products supplied by Fantech. In addition it can be
used with a range of two speed star/delta motors fitted to axial
flow fans.
The unit is a simple switch and does not provide any protection to
the motor. As defined in the wiring code AS/NZS3000:2000, three-
phase motors that are unattended must be suitably protected; HRC
fuses are not sufficient for that purpose.
WIRING DIAGRAM
DESCRIPTION
114W
×
70H
×
90D
Recess
20
SD1-S
Dimensions, mm
Mounting
Maximum Amps
Model Number
The unit incorporates an ON-OFF switch with high and low speed settings.
TECHNICAL DATA
SPEED CONTROLLERS THREE-PHASE MOTORS
TYPE - SD1-S
M