Parallel use to increase power

Power supplies of the same type from the PS3xxx series can be connected in parallel to increase the output power.

• The output voltage must be set to the same value (±100 mV) in "Single Use" mode and with the same load conditions on all devices, or the units can be left with the factory settings.
• After the settings have been made, the jumper on the front of the device must be changed from "Single Use" mode to "Parallel Use" mode in order to achieve load splitting.
• In "Parallel Use" mode the output voltage is regulated such that the voltage at no load is approx. 4% higher than at nominal load. See also Output chapter.
• If no jumper is plugged in, the device is in "Single Use" mode. The factory setting is also the "Single Use" mode.
• If more than three devices are connected in parallel, a fuse or circuit breaker with a rated current of 30 A or 32 A is required at each output. Alternatively a diode can be used.
• Energize all devices simultaneously to avoid overload Hiccup mode.
  If the output has been in Hiccup mode due to overload or short circuit and the required output current is higher than the current of a device, it may be necessary to ramp up and shut down the input power (turn off for at least five seconds).

Restrictions:

• Maintain an installation distance of 15 mm (left/right) between two power supplies.
• Do not install the power supplies above each other.
• In "Parallel Use" mode power supplies should only be used in the standard installation position (terminals on the underside of the device), not in other installation positions or under other conditions that require a reduction in the output current (e.g., installation altitude, operation at temperatures about +60°C, ...).
• Note that leakage current, electromagnetic interference, inrush current, and harmonics increase when using multiple power supplies.