NEC 2400 ipx Bedienungsanleitung PDF herunterladen (Seite 45)

100

101

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 mm

(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 mm

(14 AWG)

is to be used. For the ground cable for the line protector of the MDF, an IV cable of 14 mm

(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

MAT

MDF

GROUND

TERMINAL

IV (G)

(ex. 6 AWG)

-48V

IV (BL)

IV (R)

-48V

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 mm

(6AWG)

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 427 428

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