Application notes
PS2001-2410-0000
31
Version: 1.0
Fig. 22: Series connection
4.6
Parallel use to increase power
PS2001-2410-0000 power supplies can be connected in parallel to increase the output power. The output
voltage of all power supplies must be set to the same value (±100mV) and with the same load conditions on
all devices, or the factory settings of the devices can be retained. No feature is included to balance the load
current between the power supplies. Normally the power supply draws current at the higher set output
voltage until its current limitation takes effect. This power supply is therefore not damaged as long as the
ambient temperature is less than 40°C.
If more than three devices are connected in parallel, a fuse or circuit breaker with a rated current of 15A or
16A is required at each output. Alternatively a diode can be used.
Energize all devices at the same time to avoid overload hiccup mode. It may also be necessary to ramp up
and shut down the input power (turn off for at least five seconds) if the output was in hiccup mode due to
overload or short circuit and the required output current is higher than the current of a device.
Restrictions: Keep a mounting distance of 15mm (left/right) between two power supplies and do not install
the power supplies above each other. In parallel 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 ...).
Remember that leakage current, electromagnetic interference, inrush current and harmonics increase when
using multiple power supplies.
Fig. 23: Parallel connection
