HarmonicGuard
®
Low Capacitance
Introduction
HGL IOM Manual - Rev. B
5
Pre-installation Planning
Verify the Application
HGL Ratings
Make sure that the HGL filter is correct for the application. The voltage rating of the filter must match
the input voltage rating of the connected drive. The horsepower and current ratings of the filter must be
appropriate for the connected load.
Select a Suitable Location
Environment
Locating the HGL in a suitable environment will help ensure proper performance and a normal operating
life. Refer to the environmental specifications listed in Table 2 and/or noted on the drawings furnished
with the unit.
The unit must be installed in an area where it will not be exposed to:
•
Direct sunlight
•
Rain or dripping liquids (unless filter is in a Type 3R enclosure)
•
Corrosive liquids or gasses
•
Explosive or combustible gases or dust
•
Excessive airborne dirt and dust
•
Excessive vibration
Working Space
Provide sufficient access and working space around the unit to permit ready and safe installation,
operation and maintenance. Make sure that the installation conforms to all working space and clearance
requirements of the National Electrical Code (NEC) and/or any other applicable codes. Provide sufficient
unobstructed space to allow cooling air to flow through the unit. Keep the widest or deepest portion of
the unit enclosure having ventilation openings a minimum of six inches from adjacent walls or other
equipment. The unit enclosure sides that do not have ventilation openings should be kept a minimum of
three inches from adjacent walls or other equipment.
Mounting an Open Panel Unit
If you are mounting an open panel unit in your own enclosure, you must provide an enclosure that is
adequately sized and ventilated sufficiently to prevent overheating. The rating and dimension tables for
open panel units list the watts of heat loss dissipated by the HGL filter. The maximum temperature of
the air around the HGL filter capacitors, line reactor, and tuning reactor should not exceed 50°C (122°F).
Power Wiring
When selecting a mounting location for the HGL filter, plan for the routing of the power wiring.
Route the conduit and wiring from the power source to the filter and then to the VFD.
The HGL is provided with internal fuses.
Warning
Unless specifically labeled as approved for such use, this equipment is not
suitable for use in an explosive atmosphere or in a "Hazardous (Classified)
Location" as defined in article 500 of the National Electrical Code (NEC).
Summary of Contents for HarmonicGuard Series
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