ND-71548 (E) CHAPTER 2
Page 27
Issue 2
INSTALLATION DESIGN
10.1 AC Input, DC Power, And Ground Cables
1. For AC input cable, VCT (Polyvinyl Chloride Cabtyre Cable) is to be used. However, if shielding is nec-
essary, as is the case when the AC input cable is to be installed in parallel with a low-voltage power cable,
etc., be sure to use VCT-S (Shielded Polyvinyl Chloride Cabtyre Cable).
2. For the power receiving terminals of the PBX, -48 V and G terminals are provided in dual (A side and B
side). For two PIMs or less, the DC main power cable connects only to A side terminals. For three PIMs
or more, the cable is branched out. A side supplies power to LPM, PIM0 and PIM1, and B side to PIM2
and PIM3.
3. For the main ground cable, an IV or CV cable of more than 14 mm2 (6 AWG) is to be used. (See Figures
2-13 through 2-15).
As the security ground cable for the MAT and externally installed equipment, IV cable of 2 mm2 (14 AWG)
is to be used. For the ground cable for the line protector of the MDF, an IV cable of 14 mm2 (6 AWG) is to
be used.
Figure 2-13 DC Main Power Cable and Main Ground Cable (1- or 2-PIM System) (Single IMG Configuration)
BATTERY
AC POWER
DISTRIBUTION
BOARD
VCT CABLE
BATTERY
CABLES RECTIFIER
POWER AND
GROUND CABLES
CV or IV
PBX
(For 1/2 PIM Configuration)
Earth Bar
AC SERVICE
OUTLET
-48V
A
G
FE
MAT
MDF
GROUND
TERMINAL
GIV (G)
(ex. 6 AWG)
FE
E
-48V
G
IV (BL)
IV (R)
-48V
G
BAB
Note: If the cover of CV Cable to be used is black, use the following clamp cover terminals so they can be
easily identified.
-48V: Black cover G: Red cover E: Green cover
CABLE SPECIFICATION
DC Main Power Cable Calculate the sectional area of cable referring to Figure 2-16.
Main Ground Cable More than 14 mm2 (6AWG)