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 LED also lights up during this time.

 

 

AC 100 V

AC 120 V

AC 230 V

 

Hold-up time

typically

64 ms

64 ms

99 ms

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

typically

32 ms

32 ms

51 ms

At 24 V, 20 A, see Fig. Hold-up time over input voltage

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