Power Supplies; Watt Power Supply (Mpws175) - Intergraph InterServe 800 System Reference Manual

Power Supplies

Two power supply options are available, as follows:
u
Single 300 Watt power supply (MPWS175)
u
Dual 550 Watt power supplies (MPWS139)

300 Watt Power Supply (MPWS175)

MPWS175 is a 300 Watt autoranging supply, that switches between 90-132 VAC or 180-264
VAC, depending on the location. The input frequency is 47-63 Hz, single phase. At full
load, the power supply has a minimum efficiency of 65 percent.
The power supply is enclosed in a case that includes a fan to provide additional airflow
through the system. Refer to "Cooling Fans and Temperature Sensors" later in this chapter
for more information.
DC Output Specifications
The following table details the DC output specifications for the power supply.
Nominal Output Voltages
Continuous Load (Maximum.)
Continuous Load (Minimum.)
Noise and Ripple (PARD) (DC to 30
MHz)
Initial Setting Tolerance
2, 5
Regulation Line/Load
Overshoot (Turn on/off)
1
1, 5 4
+3.3
1 3, 4
48
1
0
50
2, 5
3%
3%
5%
Outputs
2 3 4
4 4
+5.1 +12.0
12.0
3, 4 4
0.5
76 12
6 0 0
50 100 250
3% 5% 10%
3% 5% 10%
5% 10% 10%
59
Unit
5
VDC
5.0
0.5 ADC
0 ADC
100 mVp-p
Max
Max
10%
Max
10%
10% Max