Hold-up time

The hold-up time is the time during which the output voltage of a power supply unit remains within the specification after a loss of input power. The hold-up time depends on the output load. Without load the hold-up time can be several seconds. The green DC-OK lamp also lights up during this time.

 

 

AC 100 V

AC 120 V

AC 230 V

 

Mains failure

Hold-up time

Typ.

26 ms

27 ms

28 ms

At 24 V, 10 A, see Fig. Hold-up time over input voltage

Typ.

51 ms

53 ms

55 ms

At 24 V, 5 A, see Fig. Hold-up time over input voltage

Min.

21 ms

22 ms

22 ms

At 24 V, 10 A, see Fig. Hold-up time over input voltage

Min.

41 ms

42 ms

44 ms

At 24 V, 5 A, see Fig. Hold-up time over input voltage

Hold-up time 1:
Hold-up time over input voltage; switch-off behavior, definitions