Installation and Operation Manual (Rev E)
SGI Series Inverters
DOCR-060371
5
CAUTION:
Please follow these guidelines:
Be sure to verify load capacity of floor, roof or concrete pad mounting area.
Table 2.1 – Weight and Required Fork Lift Capacity
The ambient temperature must be between –40
o
C and +50
o
C for full power, continuous
operation. The inverter will automatically reduce power or may shut down to protect itself
if ambient air temperature at the intake rises above 50
o
C.
The National Electrical Code (NEC) requires that the inverter be connected to a dedicated
circuit and no other outlets or device may be connected to this circuit. See NEC Article 690.
The NEC also imposes limitations on the size of the inverter and the manner in which it is
connected to the utility grid. See NEC Article 690 for guidance within the US.
A minimum distance of 18 inches must be clear
behind
the inverter for cooling air exhaust
and service access. A clearance distance of 36 inches behind the inverter is highly
recommended to aid in cleaning the exhaust screens.
A minimum distance of 12 inches must be clear
above
the inverter for ventilation.
A minimum distance of 6 inches must be clear to the
sides
of the inverter.
If you are installing the inverter in a utility vault or electrical closet, the air circulation must
be sufficient for heat dissipation. Provide external ventilation to maintain an ambient
condition of less than 50
o
C. The ambient temperature should be kept as low as possible at
all times for optimal inverter operation and life.
Model
Max. heat loss
SGI 500
55000 Btu/hr
SGI 500PE
55000 Btu/hr
SGI 300
32000 Btu/hr
SGI 266
28000 Btu/hr
SGI 250
26000 Btu/hr
SGI 225
24000 Btu/hr
Table 2.2 – Indoor Cooling Requirements
Inverter Model
Weight
Fork Lift
SGI 500, 500PE
6980 lbs.
8000 lbs
SGI 300, 266, 250
5650 lbs.
6000 lbs
SGI 225
5170 lbs
6000 lbs
