373 / 416
MOTOR INFORMATION
© FANTECH
2016
REFERENCE INFORMATION
O-3
O
Re-starting the motors is achieved by two methods:-
O
auto-reset
O
manual-reset
The ‘auto-reset’ will permit the fan motor to automatically re-start when the windings
cool down. It is recommended they be connected to a current control relay.
The ‘manual-reset’ type requires the thermal contacts to be wired to a remote trip
contactor which has to be reset manually.
SUPPLY VOLTAGE
As the speed of external rotor motors can be controlled by varying the applied voltage,
they can be used where the voltage varies from the standard of 240V/1ph/50Hz or
415V/3ph/50Hz without detrimental effect to the motor. Indeed, on voltages as low as
200 volt on single-phase, or 346 volt on three-phase supply, only a slight reduction of
the motor speed would be detected.
TROPIC-PROOFING
Tropic-proofing consists of an anti-fungal treatment of the windings. Further
modifications may be necessary for high humidity applications.
WARRANTY
Note that warranty is void if the thermal contacts are not used.
AS/NZS3000:2007 wiring rules state that motors required to run unattended shall be
fitted with over-temperature devices such as thermal overload relays. If this is not
complied with warranty will be void.
A licensed electrical contractor or engineer, experienced in motor protection, should be
engaged to assess the motors and specific requirements of the installation.
STANDARD MOTORS
INTRODUCTION
Constructed to appropriate Australian, European and International Standards, standard
motors are used to drive a range of fans extending from window and wall units to large
industrial axial flow and centrifugal fans.
STANDARDS
The standard motors used are foot, flange or pad mounted, metric type and totally
enclosed as produced by most of the world’s major manufacturers. They will run
continuously with the minimum of attention and have been selected for their universal
interchangeability and availability in countries throughout the world. The motors comply
with the appropriate British, Australian and International Standards as far as:-
O
output
O
performance
O
dimensions
O
minimum energy performance standard (MEPS) to AS/NZS1359.5:2004
are concerned.
TEMPERATURE RANGE
AND ALTITUDE
In general the motors can operate in ambients from -20°C to +40°C at altitudes up to
1000 metres above sea level. Motors to operate outside this range can be supplied if
required.
ENCLOSURE STANDARD
The minimum is IP54 in accordance with the appropriate standards. IP55 enclosure can
be supplied for fully weatherproof applications.
FINISH
Standard finish is enamel paint top coat on suitable primer to give good appearance
and protection for general usage. Alternative finishes such as epoxy coating can also
be provided.