Electrical Connection - Wilo Control-FLA Einbau- Und Betriebsanleitung

7.2 Electrical connection

DANGER
! Risk of fatal injury!
Improper electrical connections can lead to fatal
electrical shocks.
• Have the electrical connection established by an
electrician approved by the local electricity sup-
plier only and in accordance with local regulati-
ons.
• Observe the installation and operating instruc-
tions for the pumps and accessories.
• Disconnect the power supply before any work.
Warning! Danger of electric shock!
There is a potentially fatal voltage on the supply
side of the main switch, even when the switch is
turned off.
NOTE:
Observe the descriptions for the installation con-
ditions and for selecting electrical lines in the line
installation guidelines and for designing safety
power supply, e.g. in DIN VDE 0100 Part 718.
• The type of mains and current and voltage of the
mains connection must correspond to the details
on the rating plate of the pump/motor.
• Mains requirements:
Connection and Output [kW]
start-up type (Column 1)
3~400 V
2-pole
Direct start
3~400 V
2-pole
Star-delta-starting
• Fuse on mains side in accordance with the infor-
mation in the circuit diagram.
• Feed the ends of the cable through the cable
screw fittings and cable inlets and wire them
according to the markings on the terminal strips.
Installation and operating instructions Wilo-FLA Control
System impedance [Ω]
(Column 2)
3,0
4,0
2,2
3,0
4,0
7,5
11,0
15,0
18,5
22,0
30,0
37,0
45,0
7,5
11,0
15,0
18,5
22,0
30,0
37,0
45,0
NOTE:
In accordance with DIN EN / IEC 61000-3-11 (see
table below), the switchgear and pump with motor
power of ... kW (column 1) are provided for opera-
tion on a mains power supply with a system impe-
dance of Zmax at the supply connection point of
max. ... Ohm (column 2) for a maximum number of
... connections (column 3).
If the mains impedance and the number of con-
nections per hour are greater than the values
given in the table, the switchgear with the pump
may lead to temporary voltage drops and also to
disturbing voltage fluctuations (flickering) due to
the unfavourable mains conditions.
Therefore, measures may be necessary before the
switchgear with pump can be operated as inten-
ded at this connection. The necessary information
must be obtained from the local electricity supply
company and the manufacturer.
Connections per hour
(Column 3)
0,204
0,1300
0,2570
0,1480
0,0940
0,2170
0,1360
0,0870
0,0590
0,0460
0,0270
0,0180
0,0140
0,1570
0,0980
0,0630
0,0430
0,0330
0,0200
0,0130
0,0100
• Earth the pump/installation in accordance with
the regulations.
• Connect the connecting cables directly to the
connection terminals. The cables must not be
interrupted and no further components may be
connected.
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