LEESON SM Series Sub-Micro Inverters - Manual (Page 11)

6.0 INSTALLATION
NOTE: SM Series ™ drives are intended for inclusion within other equipment, by professional
electrical installers according to EN 61000-3-2. They are not intended for stand-alone operation.
DRIVES MUST NOT BE INSTALLED WHERE SUBJECTED TO
ADVERSE ENVIRONMENTAL CONDITIONS SUCH AS:
COMBUSTIBLE, OILY, OR HAZARDOUS VAPORS OR DUST;
EXCESSIVE MOISTURE OR DIRT; VIBRATION; EXCESSIVE AMBIENT
TEMPERATURES. CONSULT LEESON ELECTRIC FOR MORE
INFORMATION ON THE SUITABILITY OF A DRIVE TO A PARTICULAR
ENVIRONMENT.
SM Series ™ models are suitable for UL pollution degree 2 environment only, and MUST be installed in
an electrical enclosure which will provide complete mechanical protection and will maintain the internal
temperature within the drive’s ambient operating temperature rating. All drives models MUST be
mounted in a vertical position for proper heatsink cooling.
Maintain a minimum spacing around the drive of at least 1 inch (25mm) on each side and 2 inches
(50mm) on the top and bottom for units up to 5 HP (4 kW), and 2 inches (50 mm) on each side and 4
inches (100 mm) on the top and bottom for larger units. Allow more spacing if the drive is mounted next
to other heat-producing equipment. Do not mount drives above other drives or heat producing
equipment. Fans or blowers should be used to insure proper cooling in tight quarters.
In order to properly size an enclosure, the heat generated by the drive(s) must be known. Refer to the
HEAT LOSS columns in Section 5.0 - SM Series
™ RATINGS. An enclosure manufacturer can then
determine the required enclosure size based on the total heat generated inside the enclosure (from the
drive(s) and other heat sources), the maximum allowable temperature inside the enclosure, the maximum
ambient temperature outside the outside the enclosure, and the enclosure properties.
The SM Series ™ is UL approved for solid state motor overload protection. Therefore, a separate thermal
overload relay is not required for single motor applications.
6.1 INSTALLATION AFTER A LONG PERIOD OF STORAGE
Severe damage to the drive can result if it is operated after a long period of
storage or inactivity without reforming the DC bus capacitors!
If input power has not been applied to the drive for a period of time exceeding three years (due to
storage etc), the electrolytic DC bus capacitors within the drive can change internally, resulting in
excessive leakage current. This can result in premature failure of the capacitors if the drive is operated after
such a long period of inactivity or storage.
In order to reform the capacitors and prepare the drive for operation after a long period of inactivity,
apply input power to the drive for 8 hours prior to actually operating the motor.
7
WARNING
WARNING