5.4
Supply voltage
5.4.1
Mains voltage
Power from the mains is connected to terminals: PE, L1, L2, L3 and N (depending on type). Here, it
must be strictly observed that the mains voltage lies within the allowable tolerance speci
fi
cations (see
Technical data and nameplate a
ffi
xed to the side).
The neutral conductor connection
“
N
”
is only available for the device types with
25 A
rated current for
the reduction of the leakage current. It is irrelevant for the device
’
s functionality, for those supply
networks without neutral conductors the connection is not required. Because however, higher leakage
currents can
fl
ow through the
“
PE
”
conductor connection, undesirable erroneous activation may occur
on systems equipped with FI circuit breakers.
Type FXDM4.2 + FXDM5
The PE connection for the supply mains must be connected at the
same terminal as the existing connection to the printed circuit board
(increase in interference immunity).
Attention!
•
Not suitable for IT system!
•
Do not operate on Grounded Delta System!
•
To activate the on current limitation, you must wait at least 90 seconds after switching o
ff
the line
voltage before switching back on!
5.4.2
Line protection fuse
The connection must be fused depending on the used cable, the type of routing, the operating
conditions and according to the standards applicable on site. The speci
fi
cation for the maximum
admissible line fuse of the device must be observed (see technical data).
Possible components for the line protection (recommendation):
•
Safety fuses of operating class
“
gG
”
(whole range fuse cartridges for general applications according
to EN 60269-1).
•
Line protection switch with characteristic
“
C
”
(according to EN 60898-1).
5.4.3
Required quality attributes for the mains voltage
Danger due to electric current
The mains voltage must comply with the EN 50160 quality characteristics and the de
fi
ned standard
voltages in IEC 60038!
5.4.4
Leakage current, securely attached, ground wire double up to 10 mm
²
Danger due to electric current
In accordance with the de
fi
ned networks in DIN EN 60990, the device has a leakage current > 3.5 mA
so it must be permanantly connected. The protective ground must be made double in accordance with
EN 50178 Point 5.2.11and 5.3.2.1 up to a cross section of at least 10 mm
²
.
5.5
Residual-current-operated protective device
Danger due to electric current
For an installation of r.c.d. protection, it shall be observed that this must be of
“
universal-current
sensitivity
”
(Type B). In accordance with EN 50 178, Section. 5.2. other types of current-operated
protective devices may not be used. To ensure as high a degree of reliability as possible , we
recommend a tripping current of 300 mA.
Residual current circuit breaker (type B)
Operating Instructions
Icontrol
–
model series FXDM
Electrical installation
L-BAL-E036-GB 2022/47 Index 011
Part.-No.
18/108
