SSI
ERP2U Power Supply Design Guide, V1.0
power supplies shall continue to operate with no interruption of performance. It is required that all redundant power supply modules be present to support redundant AC inlets.
5.3AC Input Voltage Specification
STATUS
Required
The power supply must operate within all specified limits over the following input voltage range. Harmonic distortion of up to 10% THD must not cause the power supply to go out of specified limits. The power supply shall operate properly at 85 VAC input voltage to guarantee proper design margins.
Table 2: AC Input Rating
PARAMETER | MIN | RATED | MAX | 350W Max | 480W Max |
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| Rated Input | Rated Input |
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| Current | Current |
Voltage (110) | 90 Vrms | 140 Vrms | 1 | 1 | |
5.5 Arms | 7.0 Arms | ||||
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| Vrms |
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|
Voltage (220) | 180 Vrms | 264 Vrms | 1 | 1 | |
2.3 Arms | 3.5 Arms | ||||
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| Vrms |
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Frequency | 47 Hz |
| 63 Hz |
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1Maximum rated input current is measured at 100 VAC and 200 VAC.
5.4Efficiency
STATUS
Required
The power supply shall have a minimum efficiency shown in the table below for the different power ratings. The power dissipated within the
Table 3: | Efficiency | |
Output |
| Minimum |
Power |
| Efficiency |
350W |
| 70% |
|
|
|
480W |
| 77% |
|
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|
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