English
Installation and operating instructions Wilo-SC/SCe-HVAC
79
7.2
Electrical connection
Safety
DANGER! Risk of fatal injury!
An improper electrical connection can result in a fatal electrical
shock.
• Have the electrical connection established by an electrician
approved by the local electricity supplier only and in accordance
with local regulations.
• Observe the installation and operating instructions for the acces-
sories!
7.2.1
Mains connection
DANGER! Risk of fatal injury!
There is a potentially fatal voltage on the supply side, even when
the main switch is switched off.
• Observe general safety instructions!
The mains type, current type and voltage of the mains connection
must match the details on the rating plate of the control device.
Mains requirements
NOTE:
In accordance with EN / IEC 61000-3-11, the switchgear and pump
with a power of ... kW (column 1) are intended for operation on a
mains power supply with a system impedance Zmax at the building
connection of max. ...
Ω
(column 2) with a maximum number of
switching operations per hour of ... (column 3) (see Table 6 below).
If the mains impedance and the number of switching operations 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 dis-
turbing voltage fluctuations (flickering) due to the unfavourable
mains conditions.
Therefore, measures may be necessary before the switchgear with
pump can be operated as intended on this connection. The necessary
information must be obtained from the local energy supply company
and the manufacturer.
Column 1:
Power [kW]
Column 2:
System
impedance [
Ω
]
Column 3:
Switching
operations
per hour
3~400 V
2-pole
Direct starting
2.2
0.257
12
2.2
0.212
18
2.2
0.186
24
2.2
0.167
30
3.0
0.204
6
3.0
0.148
12
3.0
0.122
18
3.0
0.107
24
4.0
0.130
6
4.0
0.094
12
4.0
0.077
18
5.5
0.115
6
5.5
0.083
12
5.5
0.069
18
7.5
0.059
6
7.5
0.042
12
9.0 - 11.0
0.037
6
9.0 - 11.0
0.027
12
15.0
0.024
6
15.0
0.017
12
Содержание SC-HVAC SC
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