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Installation
Power System
Installing Power Cord and Plug
Power Cord and Plug Installation, North America (60Hz)
For North America, the 99x/T-Class SPU cabinet is shipped with a 10-foot length of 3-wire
#10 AWG line power cord. A twist-lock (NEMA L6-30P) plug on one end connects to the AC
power source; the other end of the cord is connected to the terminal block (labeled TB1)
and to the grounding terminal, both in the AC front end.
Power Cord Installation, International (50Hz)
For European and other international locations, an AC line power cord and plug different
from those supplied for North America are used to satisfy local requirements. The
international power cord is not shipped with the SPU cabinet and must be connected
according to the following procedure.
This procedure applies only to configuring the power system for international (50Hz)
systems. The rating of the cord should be determined by a qualified electrician familiar
with the electrical codes for the site location. The customer should supply the power cord.
The cross-sectional area of the cord conductors should be not less than 2.5 mm
2
figure of 2.5 mm
is based on a rated current range of 16 to 25 Amps, per IEC 950; local or
national codes should also be consulted to determine the appropriate conductor
cross-sectional area. The strain relief bushing provided will accept a cord with a diameter
of 15.9 to 19.1 mm (.625 to .750 inches).
CAUTION
Tighten all connections firmly. Loose connections can overheat, restrict
current flow, and may burn! Double check all connections before
proceeding. Make sure cord size is adequate for system load.
Install the cord as follows:
1. Remove the sheetmetal enclosing the AC unit. This sheetmetal surrounds the circuit
breaker on the lower right of the cabinet rear. You should see the components shown in
Figure 3-12.
2. Insert the power cord into the AC unit through the strain relief.
3. Connect the two phase wires (or the phase and neutral wires) to the terminal block
according to the color code listed in Table 3-5 and tighten the screws. (Color code may
not apply at all installation sites.)
4. Connect the green/yellow conductor to the earthing terminal as shown in Figure 3-12.
3-26
2
. This
Chapter 3
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