Operating instructions
W3G910-KU25-03
Translation of the original operating instructions
4.2.4 Residual current circuit breaker (RCCB)
If the use of a residual current device (RCD) is required in your
installation, only AC/DC-sensitive residual current devices
(type B or B+) are permissible. As with variable frequency
drives, residual current devices cannot provide personal safety
while operating the device. When the device power supply is
switched on, pulsed charging currents from the capacitors in the
integrated EMC filter can lead to the instant tripping of residual
current devices. We recommend the use of residual current
circuit breakers (RCCB) with a trip threshold of 300 mA and
delayed tripping (super-resistant, characteristic K).
4.2.5 Leakage current
For asymmetrical power systems or if a phase fails, the
leakage current can increase to a multiple of the nominal value.
4.2.6 Locked-rotor protection
Due to the locked-rotor protection, the starting current (LRA) is
equal to or less than the nominal current (FLA).
4.3 Connection in terminal box
4.3.1 Preparing cables for connection
Only strip the cable as far as necessary, ensuring that the cable gland is
sealed and there is no strain on the connections. For tightening torques,
see Chapter 3.1 Product drawing.
NOTE
Tightness and strain relief are dependent on the cable
used.
→ This must be checked by the user.
Fig. 1: Recommended stripped lengths (inside terminal box)
(1) supply line (2) control and relay line
4.3.2 Terminal connection data
Supply line
min.
max.
Rigid cable cross-
section
0.2 mm²
4 mm²
Flexible cable cross-
section
0.2 mm²
4 mm²
AWG/kcmil cable
cross-section
24
12
Wire-end ferrules with
insulating collar,
in accordance with
DIN 46228-4 for
flexible cable
0.25 mm²
4 mm²
Wire-end ferrules
without insulating
collar,
in accordance with
DIN 46228-1 for
flexible cable
0.25 mm²
4 mm²
NOTE
The cable and cable cross-section must be selected taking into
account the max. starting current of the drive and the type of
cable routing (see Chapter 4.2.2 Supply connection and fuses)
Control and relay cables
min.
max.
Rigid cable cross-
section
0.2 mm²
1.5 mm²
Flexible cable cross-
section
0.2 mm²
1.5 mm²
AWG/kcmil cable
cross-section
24
16
Wire-end ferrules with
insulating collar,
in accordance with
DIN 46228-4 for
flexible cable
0.14 mm²
0.75 mm²
Wire-end ferrules
without insulating
collar,
in accordance with
DIN 46228-1 for
flexible cable
0.25 mm²
1.5 mm²
NOTE
Crimping and pressing forms of the wire-end ferrules
For flexible control and relay cables, from a cable cross-section
of 1.0 mm², a trapezoid crimp is required to ensure correct
installation on the connector.
Fig. 2: Trapezoid crimp
Item no. 55565-5-9970 · ENU · Change 247619 · Approved 2021-11-25 · Page 8 / 16
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