Application notes
PS1111-2403-0002
26
Version: 1.0
4
Application notes
4.1
Charging batteries
Do not use the power supply to charge batteries.
4.2
Series connection
Power supplies of the same type can be connected in series to increase the output voltages. As many
devices can be connected in series as necessary, as long as the sum of the output voltages does not exceed
150Vdc. Voltages with a potential higher than 60Vdc are no longer regarded as safety extra-low voltage and
can be dangerous. Such voltages must be protected with a contact hazard protection.
Avoid application of return voltage (e.g., from a braking motor or battery) to the output terminals.
Restrictions: Keep a mounting distance of 15mm (left/right) between two power supplies and do not install
the power supplies above each other.
Remember that leakage current, electromagnetic interference, input inrush current and harmonics increase
when using multiple power supplies.
Fig. 14: Series connection
4.3
Parallel use to increase power
Do not connect devices for higher output currents in parallel.
4.4
Operation on two phases
The power supply can also be used on two phases of a three-phase system. Such a phase-to-phase
connection is permissible as long as the supply voltage is below 240V+10%.
