Operating instructions

6 Installation
1.1.3 Unit Preparation
To remove unit from the shipping pallet, set the pallet in a level area where there is enough room
to maneuver and remove the unit.
Remove the rear and side panels (if furnished) to provide access to the unit frame and to prevent
damage to the exterior panels during handling. Be sure to carefully disconnect the panel ground
wires by pulling the quick-disconnect terminals at the unit frame before lifting off the panels.
Remove the bolts holding the unit to the shipping pallet (located in the base of the unit). Remove
the shipping blocks from under the frame of the unit.
If unit is provided with an unloading ramp, locate the ramp against the pallet at the front or rear
of the unit. Secure ramp to the pallet such as by nailing the overlapping edge of the ramp to the
pallet. Carefully roll the unit off the pallet onto the floor.
If unit is not provided with an unloading ramp, use unit lifting equipment to raise the unit off the
pallet and onto the floor.
Roll the unit to its intended location. Before maneuvering the unit to the intended location, see
1.1.4 - Location Considerations.
1.1.4 Location Considerations
The Static Switch is intended to be bolted to the associated Precision Power Center. The unit may
also be used without a Precision Power Center, but then it must be equipped with the optional
side panels.
If unit is used with a Precision Power Center, the recommended location is bolted to the Precision
Power Center to minimize the interconnecting cable runs.
Operating Environment— The unit is designed to be installed indoors where the ambient air
temperature is in the range of 0°C and 40°C with a relative humidity of 0% to 95% non-condens-
ing.
The unit is designed with top and bottom cable terminations to allow maximum flexibility in its
installation. If bottom cable entry is used, sufficient cable bending space must be provided by a
raised floor or the optional floor pedestals.
Altitude—The standard units are designed for full load operation up to 4000 feet (1200m) above
sea level. See Figure 4 for recommended deratings for altitudes greater than 4000 feet (1200 m).
Operation at full load at higher altitude can be accommodated in ambient temperatures less than
40°C ambient. Figure 5 shows the maximum allowable ambient temperature for full load opera-
tion at altitudes above 4000 feet (1200 m).
Recommended Minimum Service Clearances are at the front and rear of the unit. Side
access is required on 80 to 600 amp units to facilitate input/output connections and to allow main-
tenance of input/output connections. The minimum service clearance required by the National
Electrical Code (NEC) Article 110-16 is 30 in. (762 mm) for units with voltages up to 150 volts to
ground and 42 in. (1067 mm) for units with voltages over 150 volts to ground. Clearance of at least
18 in. (457 mm) is required above the unit for cooling air flow.
Heat Output—The unit produces minimal heat during normal operation.
Switch Size
Heat Output
BTU/Hr (kW)
100/100 amp 1,600 (0.47)
250/250 amp 2,800 (0.82)
400/400 amp 4,000 (1.17)
600/480 amp 5,600 (1.64)
800/640 amp 8,000 (2.34)
1200/960 amp 11,000 (3.22)