Motorola DIMETRA MTS 2, Installation, Configuration And Basic Service Manual

Page: 72 / 517

AC and DC Current Load Chapter 3: Site Preparation
Table 3-7 Typical Power Loads and Heat Dissipation Values - Expansion Cabinet 800 MHz
Configuration (Continued)
Expansion
Cabinet
Consumptions
MTS 800 MHz
Configuration
AC
(W)
Heat
AC
(W)
AC
When
Charg-
ing (W)
Heat AC
When
Charging
(W)
DC
-48 V
(W)
Heat
DC
(W) Comment
TETRA TX 25 W and TEDS TX 10 W
MTS4 with 1 BR w.
MTCC 405 380 790 455 395 370 High power PA,
fans
MTS4 with 2 BRs w.
MTCC 700 650 1085 740 685 635 High power PA,
fans
MTS4 with 3 BRs w.
MTCC 1130 1055 1890 1215 1105 1030 High power PA,
fans
MTS4 with 4 BRs w.
MTCC 1445 1345 2205 1515 1410 1310 High power PA,
fans
•
All the values in the table are calculated from AC = 230 V
•
Add additional 5% for 110 V
•
Charging is up to 6 A per PSU
AC and DC Current Load
The MTS has a certain power consumption even when the Power Supply Unit
(PSU) is switched off (0.1 A @ -48 VDC, 0.04 A @ 110 VAC, 0.02 A @ 240 VAC).
The switch only disconnects DC outputs and charging currents. In case of
field repair, all PSU connecting cables have to be disconnected.
Backup Battery
The backup battery is normally located near the cabinet(s). The recommended batteries to be used are
a VRLA (Valve Regulated Lead Acid) recombination type, with -48 VDC nominal.
3-20
6802800U74-N September 2009