User Manual

Page 28
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
2.3.4 Connection to AC supply
• ConnectiontoanACsupplymustonlybecarriedoutbyqualiedpersonnelandthedevice
must always be run directly on a power grid (transformer are permitted) and not on generators
or UPS equipment!
• Cable cross section must be suitable for the maximum input current of the device! See tables
below. The device should furthermore be fused externally and according to the current rating
and cable cross section
• BeforepluggingtheACplugensurethatthedeviceisswitchedo󰀨byitsmainsswitch!
• Ensure that all regulations for the operation of the device and connection to the public grid
of energy back-feeding equipment have been considered and requirements have been met!
The device is delivered with a 5 pole AC plug. That plug is connected either to a single-phase supply (L, N, PE) or
two-phase supply with 208 V rating (2x L, PE).
The PE conductor is imperative and must always be wired!
2.3.4.1 Cross sections
For the selection of a suitable cable cross section the rated AC current of the device and the cable length are
decisive. Based on the connection of a single unit the table below lists the maximum input current and recom-
mended minimum cross section for each phase. The plug is labeled with L1, L2, L3 and PE, but only inputs L2
and L3 are used to supply the device. When using a single-phase supply, the input L3 will usually be connected to
N. This assignment L3 = N is, however, not mandatory. The two phases can also be switched. It’s only important
to connecte the correct two inputs.
Input L1 Input L2 Input L3 / N PE
Nominal power ø I
max
ø I
max
ø I
max
ø
2.5 kW - - 2,5 mm² 16 A 2,5 mm² 16 A 2,5 mm²
2.3.4.2 AC cable
The included connection plug can receive crimped cable ends of up to 6 mm². The longer the connection cable,
the higher the voltage loss due to the cable resistance. Therefore the mains cables should be kept as short as
possible or have a bigger cross section.
Figure 7 - Example for a mains cord (cable not included in delivery)