User manual

Table Of Contents
Installation Instructions
15
Figure 8 Low-voltage control junction box connections, typical
Figure 9 Main input junction box connections, typical
1.3.3 System Grounding
The performance and safety of any power conditioning system depend on proper grounding.
Figure 10 shows the typical grounding arrangements for the Liebert
®
FPC
.
Table 9 Main input (power) junction box dimensions, typical
Unit kVa
Input Voltage
208-240V 380-415V 480-600V
15-100 kVA, L x W x H, inches (mm) 27 x 14 x 6 (686 x 356 x (152)
125-150 kVA, L x W x H, inches (mm)
35 x 22 x 6
(889 x 559 x 152)
27 x 14 x 6 (686 x 356 x (152)
200 kVA, L x W x H, inches (mm)
N/A
27 x 14 x 6 (686 x 356 x (152)
225 kVA, L x W x H, inches (mm)
N/A
35 x 22 x 6
(889 x 559 x 152)
27 x 14 x 6
(686 x 356 x (152)
300 kVA, L x W x H, inches (mm)
N/A
35 x 22 x 6 (889 x 559 x 152)
1 2 3 4 5 6 10 11 127 8 9 13 14 15 16 17 18 19 20 21
Building
Interface
Relay
Factory-supplied
low-voltage control cable
A
B
C
N
G
Customer input
power connection
3-phase, 3-wire + GND
for units with transformer
3-phase, 4-wire + GND
for units without transformer
Factory-supplied
input power cable
assemby
NOTE : Parallel cables
are used on units with
higher -ampacity
Neutral busbar and wire
furnished on units
without transformer