Technical data

7
7-1
7Power Supplies
3-Slot Power Supply
DC power for the backplane, fan, and drives is furnished by a
UL/CSA/VDE-approved 170W autoranging power supply
module. Power supply modules are available in both –24/–48Vdc-
and 115/230Vac-compatible versions, each providing +5Vdc,
+12Vdc, and –12Vdc to the system (with power factor correction in
the AC version). The power supply module is installed next to the
VMEmodule card cage. The power supply receives forced-air
cooling together with the VMEmodules and mass storage drives.
Table 7-1. 3-Slot Power Supply Specifications
Characteristics Specifications
Physical characteristics
Height
Width
Length
5.7 in. (145 mm)
3.4 in. (86 mm)
14.0 in. (356 mm)
Temperature
Operating
Storage and transit
0˚ to 50˚ C (32˚ to 122˚ F)
-55˚ to 85˚ C (-67˚ to 185˚F)
Relative humidity 0% to 90% noncondensing
Altitude
Operating
Storage and transit
0 to 10,000 feet (3048 m)
0 to 30,000 feet (9144 m)
Power ratings
Input voltage (DC)
Input voltage (AC)
Output voltages
Output power
-18Vdc to -76Vdc
90-132Vac, 180-264Vac, 47-63Hz
+5Vdc @ 20A
+12Vdc @ 5A
-12Vdc @ 1A
170W maximum (total from all outputs)