Ac And Dc Current Load; Backup Battery - Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual

AC and DC Current Load

Table 3-7 Typical Power Loads and Heat Dissipation Values - Expansion Cabinet 800 MHz
Configuration (Continued)
Expansion
Cabinet
Consumptions
MTS 800 MHz
Configuration
TETRA TX 25 W and TEDS TX 10 W
MTS4 with 1 BR w.
MTCC
MTS4 with 2 BRs w.
MTCC
MTS4 with 3 BRs w.
MTCC
MTS4 with 4 BRs w.
MTCC
AC and DC Current Load

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
Heat
AC AC
(W) (W)
405 380
700 650
1130 1055
1445 1345
• 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
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.
AC Heat AC
When When
Charg-
Charging
ing (W) (W)
790 455
1085 740
1890 1215
2205 1515
Chapter 3: Site Preparation
DC Heat
-48 V DC
(W) (W) Comment
395 370
High power PA,
fans
685 635 High power PA,
fans
1105 1030 High power PA,
fans
1410 1310 High power PA,
fans
6802800U74-N September 2009