DC Input Voltage Specification

The power supply will operate within all specified limits over the input voltage range outlined in Table 9. The power supply will power-off if the DC input is less than -34 V DC.

Table 9. DC Input Rating

 

 

Minimum

 

Nominal

 

Maximum

 

 

Maximum Input

Parameter

 

Tolerance

 

Rating

 

Tolerance

1

 

Current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

-

38 V DC

-48

to –60 V DC

-75 V

DC

 

13.5 Amps

 

 

 

 

 

 

 

 

 

 

 

1Maximum input current is measured at the lowest input voltage that the power supply continues to operate. This is not to be used for determining agency input current markings.

DC Output Current Specifications

The combined output power of all outputs will not exceed 350 W. Each output has a maximum and minimum current rating shown in Table 10. The power supply meets both static and dynamic voltage regulation requirements for the minimum dynamic loading conditions. The power supply meets only the static load voltage regulation requirements for the minimum static load conditions.

Table 10. 350 W Load Ratings

 

 

+3.3 V

 

+5 V

 

+12 V

-12 V

 

5 V SB

 

 

 

 

 

 

 

 

 

 

PEAK (10sec)

 

 

 

 

30A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MAX

 

20A

20A

 

25A

0.5A

 

1.5A

 

 

 

 

 

 

 

 

 

 

 

MIN DYNAMIC

2.0A

2.0A

 

1.5A

 

0A

0A

 

 

 

 

 

 

 

 

 

 

 

 

MIN STATIC

1A

1A

 

0A

 

0A

0A

 

 

 

 

 

 

 

 

 

 

 

 

Note: The maximum combined power of the 3.3 V and 5 V outputs is 150 W.

Peripheral Bay

The peripheral bay consists of the following two bays for removable media:

Low profile media bay 1 – for a ½-inch Floppy drive

Low profile media bay 2 – for a ½-inch CD-ROM drive

Hard Drive Tray

The hard drive tray supports two 3.5-inch x 1.0-inch Ultra160 SCSI hard disk drives (non-SCA). The hard drive tray is designed to accept 15 K RPM (and below) hard drives that consume up to 18 Watts of power.

Chassis Description

25

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IBM 343 manual Peripheral Bay, Hard Drive Tray, DC Input Voltage Specification, DC Output Current Specifications