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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
PSI 9000 15U/24U Series
2.3.4
Connection to AC supply
•
Connection to an AC mains supply must only be carried out by qualified personnel!
•
Cable cross section must be suitable for the maximum input current of the device (see table below)!
•
Before plugging in the input plug ensure that the device is switched off by its mains switch!
The cabinet is delivered with a 4 pole screw terminal to connect the AC supply. The terminal is accessible from the
rear side. When connecting it to a 3-phase supply via suitable cables, it has to be wired according to the labelling
printed onto the terminal. Required for the mains connection are following phases:
Power rating Phases
Supply type
all
L1, L2, L3, PE
Three-phase
The PE conductor is imperative and must always be wired!
For the sizing of wiring
cross section,
the power rating resp. rated max. input of the cable and the cable length
are decisive. The table below lists the maximum input current, the recommended minimum cross section per lead
(standard cables) for a length of up to 5 m and an ambient temperature up to 30°C, as well as the required external
fusing. The phase current is balanced with all models in this series.
Based on the connection of a
single cabinet
:
Cross sections
Stripping
length
External fusing
Power rating I
max
Clamp spec. Rec’d cable
Value
Type
30 kW
3x 56 A 0.75 - 35 mm² 10 mm²
16 mm
3x 63 A Circuit breaker (C or K), NH fuse
45 kW
3x 84 A 0.75 - 35 mm² 25 mm²
16 mm
3x 100 A NH fuse
60 kW
3x 112 A 35 - 95 mm²
35 mm² (*
33 mm
3x 120 A NH fuse
75 kW
3x 140 A 35 - 95 mm²
50 mm²
33 mm
3x 160 A NH fuse
90 kW
3x 168 A 35 - 95 mm²
70 mm²
33 mm
3x 200 A NH fuse
(* Must not be less, because this is also the minimum allowed cross section for the terminal
Connection scheme:
