5.3
EMC-compatible installation
5.3.1
Motor cable
The applicable standard for interference emissions is EN 61000-6-3. Compliance with this standard is
achieved through the use of an unscreened motor feed cable.
5.3.2
Control cables
Pay attention to suf
fi
cient distance from powerlines and motor wires to prevent interferences. The
control cable may not be longer than 30 m. Screened control cables must be used when the cable
length is longer than 20 m. When using a shielded cable connect the shielding to one side only, i.e.
only to the control unit with the protective ground (keep cable short and with as little inductance as
possible!).
5.3.3
Harmonics current and line impedance for devices > 16 A and
≤
75 A
Extract from EN 61000-3-12, valid for equipments with rated current > 16 A and
≤
75 A, connected to
public low-voltage systems.
This equipment complies with IEC 61000-3-12 provided that the short-circuit power S
SC
is greater than or equal
to R
SCE
x S
equ
at the interface point between the user's supply and the public system.
It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution
network operator if necessary, that the equipment is connected only to a supply with a short-circuit power S
SC
greater than or equal to R
SCE
x S
equ
.
S
SC
Short-circuit power from line at the interface point between the user's supply and the public system
S
equ
Rated - apparent power for three phase devices: S
equ
=
√
3 x U
I
x I
equ
(U
I
= phase to phase voltage
Technical data
“
Line voltage
”
)
(I
equ
= rated current of the device
Technical data
“
Rated current input
”
)
R
SCE
Short-circuit ratio
For this devices: R
SCE
≥
120
5.4
Mains connection
5.4.1
Line voltage
Power from the mains is connected to terminals: PE, L1, L2, L3. Here, it must be strictly observed that
the mains voltage lies within the allowable tolerance speci
fi
cations (
Technical data and nameplate
af
fi
xed to the side).
Danger due to electric current
Not suitable for IT system!
5.4.2
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!
5.4.3
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 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 accord-
ance with EN 50178 Point 5.2.11and 5.3.2.1 up to a cross section of at least 10 mm
²
.
Operating Instructions
Fcontrol
–
model series FKDM25/32AM-C
Electrical installation
L-BAL-E214-GB 1446 Index 002
Part.-No.
13/99
