Cabinet Requirements; Table 3-2 48Vdc Power Bus Color Coding; Table 3-3 Cabinet Power System Requirements - Motorola iDEN Site Controller System Manual

Chapter 3 Pre-Installation
Electrical Requirements

Cabinet Requirements

3-14
The positive (+) return lead is grounded at a single point on the rectifier load
return bus. Table 3-2 shows the color coding for these wires.
Table 3-2 48Vdc power bus color coding
Description
-48 Vdc (nominal)
DC return
NOTE: The hot side is negative polarity (-) in the 48 Vdc
system power bus and the ground side is positive polarity (+).
Proper sizing of the rectifiers and batteries is accomplished by the iDEN
System Manager when the site controller is ordered. The information in
Table 3-3 is provided for customers that prefer to design a unique DC power
system. This table lists the power system requirements of the Cabinet.
Table 3-3 Cabinet power system requirements
Configurations
DC power system: *
minimum
maximum
Cabinet:
Site Controller
EAS/EAS2
* Voltage is measured at the circuit breaker panel input of the
equipment cabinets.
Gen 3 Site Controller System Manual
Battery Wire
connection color
negative (-) red
positive (+) black
Requirement
-40 Vdc
-60 Vdc
40 Watts
50 Watts
68P80801E30-A 5/1/2002