38
Information on the compressor power supply
(power circuit)
■
!
Please note
Incorrect phase sequence can cause damage
to the appliance.
Make the compressor power supply
only
in
the phase sequence specified (see terminals)
with a
clockwise
rotating field.
■
The compressor power fuses must have C charac-
teristics.
Control circuit power supply (230 V~) and power circuit (400 V~)
Make connection in accordance with the separate
"Connection and wiring diagram".
Electrical connection requirements
Recommended power cables (minimum values)
Note
■
The power connections must be carried out by an
authorised electrician in accordance with local regu-
lations. The specified cross-sections are "minimum
cross-sections" and are indicative. They apply to
routing cables in empty pipes or ducts at an ambient
temperature of up to 25 °C.
■
In the case of cable routing in the vicinity of heating
pipes or encapsulated routing, the cross-sections
and max. cable lengths must be recalculated (on
site).
Power circuit (400 V~) on site, control circuit (230 V~) factory-fitted
Type
Main cable fuse protection
Power circuit (400 V~)
Cable cross-section
BW 301.CS090, BW 302.CS090
80 A
5 x 25 mm
2
BW 301.CS120, BW 302.CS110
100 A
5 x 35 mm
2
BW 302.CS140
125 A
5 x 50 mm
2
BW 302.CS180
160 A
5 x 70 mm
2
BW 302.CS230
200 A
5 x 95 mm
2
In conjunction with a power-OFF and omnipolar shutdown: power circuit (400 V~) and control circuit
(400 V~/230 V~) on site
Type
Control circuit (400 V~/230 V~)
Power circuit (400 V~)
Fuse protection
Cable cross-section
Main cable fuse pro-
tection
Cable cross-section
BW 301.CS090
BW 302.CS090
25 A
5 x 16 mm
2
80 A
5 x 25 mm
2
BW 301.CS120
BW 302.CS110
25 A
5 x 16 mm
2
100 A
5 x 35 mm
2
BW 302.CS140
25 A
5 x 16 mm
2
125 A
5 x 50 mm
2
BW 302.CS180
25 A
5 x 16 mm
2
160 A
5 x 70 mm
2
BW 302.CS230
25 A
5 x 16 mm
2
200 A
5 x 95 mm
2
Installation sequence
Power supply
(cont.)
5789 986 GB
Installation
