Operation on two phases

No external protective device is required to protect against phase failure.

The power supply may only be operated continuously on two strands of a three-phase system if the output power is reduced according to the curves shown below. Exceedance of these limit values over extended periods leads to thermal shutdown of the device.

Operation on two phases 1:
Operation on two phases

Make sure the EMC performance, Hold-up time and losses are different from three-phase operation. Therefore check the suitability of your individual application.

The use of only two strands of a three-phase system is not covered by the official approval. Therefore, additional examinations may be required during the approval process of the final system.

Operation on two phases 2:
When using only two phases: Permissible output current; Hold-up time
Operation on two phases 3:
When using only two phases: Efficiency relative to output current at 24 V; losses relative to output current at 24 V