SEW-Eurodrive MOVIPRO ADC, Operating Instructions Manual

Page: 46 / 244

5
Project planning for devices with R15 regenerative power supply module
Supply system requirements
Operating Instructions – MOVIPRO
®
ADC
46
5 Project planning for devices with R15 regenerative power supply
module
5.1 Supply system requirements
Devices with regenerative power supply modules require a stable supply system with
sufficient capacity. The following tables describe the requirements regarding the sup-
ply system (required transformer power) based on the cable length from the trans-
former to the device.
• We presume a short-circuit voltage (U
k
) of the transformer of 6%.
• Observe the following if you use several devices with regenerative power supply
module at one transformer:
For dimensioning the required transformer power, consider the number of simul-
taneously enabled devices.
Example:
– 5 devices with regenerative power supply module and 50 m supply system
cable each
– A maximum of 3 regenerative power supply modules are enabled at the same
time
– 3 × 45 kVA = 135 kVA required transformer power
• Choose the cable cross sections according to the device power and not according
to the mean expected power. Note that smaller cable cross sections and long sup-
ply cables can cause increased voltage for other supply system participants.
5.2 Installation
A star-type wiring from the power supply to the devices is ideal for installation of
devices with regenerative power supply module.
Line topology is also possible. In this case, no more than 3 devices should be connec-
ted in series.
The transformer power is calculated as follows:
Transformer power = Supply system cable length
max
device × Number of enabled
devices
Required transformer power (kVA)
Line length in m 400 V/50 Hz 480 V/60 Hz 500 V/50 Hz
50 45 45 45
100 45 45 45
150 45 45 45
200 45 45 45
250 50 45 45
300 50 45 45
500 55 50 45
22749055/EN – 04/2016