Ac-Powered Units; Dc-Powered Units - GE MDS 4790 Series Installation & Operation Manual

Internal Units
External Units
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RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8457-MDS-UP-9790X.aspx
Redundant units have two identical internal or external power supplies
depending on the option chosen when the order was placed. Non-redun-
dant units have only one internal or external power supply. The 15 Vdc
models have an interface panel and switch on the chassis, but no internal
supply.

AC-Powered Units

AC-powered radios are designed to operate from 115 to 230 Vac
(50-60 Hz). The supply automatically adjusts to match either standard
voltage. However, the supply voltage must be between 90 and 132 Vac,
or 180 to 264 Vac. Operation outside these two ranges might cause
damage to the power supply. A North American-style AC power cord is
supplied with these units.
supply module's receptacle and switch.
AC power supply module's replaceable fuse.
Table 4. AC Power Supply Module Fuse
Part Description
Replaceable Fuse Fuse, 5x20mm Glass 3.15A 250V
on AC Power
Supply Module
Replaceable Fuse Fuse, 3AG Fast .25x1.25 250V 1A
on Battery Control
Assembly

DC-Powered Units

Figure 9 shows a rear view of in internal DC power supply. Connection
to the power supply is made with a three-conductor plug-in terminal
strip (Phoenix connector P/N 73-1194A22). The radio operates in either
a positive or negative-ground configuration. The center pin of the
chassis connector is not connected within the radio.
Figure 9. Rear View of Master Station, DC Power Input
External DC-power supplies are available as an option
Page 15). Two DC-to-DC power inverters are provided on an open rack
shelf. Each inverter is protected from dust and debris by a clear plastic
cover.
MDS 4790/9790 Series I/O Guide
Figure 13 on Page 18 shows the AC power
Table 4 provides details for the
Invisible place holder
ON/OFF SWITCH
DC POWER INPUT
MDS 05-3438A01, Rev. F
Part No.
29-2130A06
29-1064A06
(Figure 10 on