大型风扇行业的领航者
Electrical installation
5.1
Control Options
BloBlades series HVLS fans are driven by standard three phase, dual input voltage
(220V/480V) motors. Standard single fan control panels available from BloBlades
include, a variable frequency drive, a control switch , and an enclosure. They are available
for single phase inputs of 220 volts, and for three phase inputs of 480v.
The VFDs in these control panels are preprogrammed for proper normal operation of the
fan. The factory can assist you in configuring them to receive special inputs-i.e. If you
want the fans to be controlled from a remote location, or want them go on and off at certain
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After making sure safety cables are installed, an easy way to test the mounting's ability t
o
handle the torque is to insert a 3-5' long 2x4 in the motor frame and try to twist it
as
shown in fig.4.10. if the fan is hanging from an extension you will have to use one hand
on the 2x4 and the other on the motor frame so as to create a torque without exerting a
big
side load. The mount should withstand a 110lb force applied 3' from the center of fan.
Lastly, if there is any potential for a clearance problem, before you start the fan for the first
time, rotate it one time by hand to find the position and blade of least clearance. Grasp
the blade and shake it vigorously both up and down and in and out, make sure there is no
chance of it hitting the obstructions, whether it is due to blade deflection or movement of
the
fan as a whole.
4.11Specification parameter table
