Page200 of 544 Powersupplies
553-3011-100 Standard14.00 January 2002
Under-voltage
Under-voltage to the AC/DC or DC power supply will result in pa rtial failur e
of the Option 11C system. The faceplate LED labelled “DC” will be turned
off.
Table61 outlines the nominal and under-voltage limits of the power supply.
WARNING
Under-voltage, in the case of +5.1V, will result in the complete
shutdown of the system.
Table 6 1
Nominal and under-voltage limits of NTAK04, NTAK05, NTDK72, and NTDK78 power
supplies
Nominal Under-voltage limit Power supply status
+5.1V +3.8V Complete Shutdown
8.5V +6.4V Partial failure
-150V -100.0V Partial failure
+15V +11.2V Partial failu re
-15V -11.2V Partial failure
-48V -36.0V Partial failure
Ring (Pk V) 70V Partial failure
-52V -45V Partial failure