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HGL Manual
4.0 Installation Guidelines
9
4.0 Installation Guidelines
Installation Checklist
The following are the key points to be followed for a successful installation. These points
are explained in detail in the following sections of this manual.
Make sure that the installation location will not be exposed to direct sunlight,
corrosive or combustible airborne contaminants, excessive dirt or liquids.
Select a mounting area that will allow adequate cooling air and maintenance access.
Make sure that all wiring conforms to the requirements of the National Electrical Code
(NEC) and/or other applicable electrical codes.
Connect the HGL equipment-grounding lug to the system ground of the premises
wiring system.
Use a properly sized grounding conductor.
Connect three-phase power to the input terminals of the HGL, L1, L2 & L3.
Connect the output power terminals, of the HGL, T1, T2 & T3, to the input power terminals
of the VFD.
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.
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).
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 enough 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 enough 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
The HGL must be mounted vertically on a smooth, solid surface, free from heat, dampness, and
condensation.
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).
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