Intergraph DHAF02430, Справочное руководство системы

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81
10 Power Supply and Fans
This chapter describes the 539-watt power supply and cooling fans used in all rack-mount systems.
Differences among systems are noted.
Power Supply (MPWS145)
MPWS145 is a 539 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.
DC Output Specifications
The following table details the DC output specifications for the power supply.
Output #1 Output #2 Output #3 Output #4 Output #5 Unit
Nominal Output
Voltages
1, 5
+3.3
4
+5.1
4
+12.0
4
−
12.0
−
5.0
VDC
Continuous Load
(Maximum.)
1
48
3, 4
76
3, 4
12
4
0.5 0.5 ADC
Continuous Load
(Minimum.)
1
0 6 0 0 0 ADC
Noise and Ripple
(PARD) (DC to
30 MHz) 50 50 100 250 100 mVp-p
Max
Initial Setting
Tolerance
2, 5
±
3%
±
3%
±
5%
±
10%
±
10% Max
Regulation
Line/Load
2, 5
±
3%
±
3%
±
5%
±
10%
±
10%
Max
Overshoot
(Turn on/off) 5% 5% 10% 10% 10% Max
The following items apply to the table of DC output specifications.
1. The power supply meets or exceeds these specifications. For the noted specifications, the
maximum values describe the smallest acceptable maximum load, and the minimum values
describe the largest acceptable minimum load.
2. These outputs are measured at the user end of an unloaded peripheral cable.
3. +3.3 V and +5.1 V will never draw over 400 Watts combined.
4. Any combination of +3.3 V, +5.1 V, and +12 V do not exceed their maximum or 539 watts of
total power.
5. The sum of Initial Setting Tolerance and Line/Load Regulation do not exceed 3% for the +3.3 V
and +5.1 V outputs, 5% for the +12 V output, and 10% for the negative output voltages.