Output Protection; Dummy Load; Output Voltage Sequencing; Outputs - IBM 5170 Technical Reference

Nominal
Load Current (A)
Regulation
Output
Tolerance
Min Max
+5Vdc 7.0
19.8 +5% to -4%
-5 Vdc 0.0
0.3 +10% to -8%
+12 Vdc
2.5 7.3 +5% to -4%
-12 Vdc 0.0
0.3
+10% to -9%
DC Load Requirements
Output Protection
If
any output becomes overloaded, the power supply will switch
off within 20 milliseconds. An overcurrent condition will not
damage the power supply.
Dummy Load
If no fixed disk drive is connected to the power supply, the
Dummy Load must be connected to PIO. The Dummy Load is a
5 ohm, 50 watt resistor.
Output Voltage Sequencing
Under normal conditions, the output voltage levels track within
300 milliseconds of each other when power is applied to, or
removed from the power supply, provided at least minimum
loading is present.
3-4 Power Supply