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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PSB 9000 3U Series
2.3.4 Connection to AC supply
• Connection to an AC supply must only be carried out by qualied 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!
2.3.4.1 Models for wide-range (380 V / 400V /480 V)
The device is delivered with a 5 pole AC plug. Depending on the model, the plug is connected to a 2-phase or
3-phase AC supply, according to the labelling on the plug. Required are following phases:
Nominal power Inputs on AC plug Supply type Configuration
5 kW models L2, L3, PE Two- or three-phase Delta
≥10 kW models L1, L2, L3, PE Three-phase Delta
The PE conductor is imperative and must always be wired!
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 lists the maximum input current and recommended
minimum cross section for each phase:
Input L1 Input L2 Input L3 PE
Nominal power ø I
max
ø I
max
ø I
max
ø
5 kW - - 2,5 mm² 16 A 2,5 mm² 16 A 2,5 mm²
10 kW 4 mm² 28 A 4 mm² 16 A 4 mm² 16 A 4 mm²
15 kW 4 mm² 28 A 4 mm² 28 A 4 mm² 28 A 4 mm²
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)
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