BeiJer BFI-H3 - Overview of Power Supply, Grounding and Motor Cable

Beijer Electronics Frequency Inverter BFI-H3 KI00363B 2019-09
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4.6 Overview of power supply, grounding and motor cable
 Drive is to be connected with ground/PE by separate grounding wire.
 3-phase power supply should be connected to L1, L2 and L3.
 Phase sequence of power supply is not important and cable doesn’t have to be a shielded.
400V
230V
690V
400V
S
TAR
DELTA
 Motor cable must be a symmetrical shielded cable to fulfil EMC requirements. Example of
cables to be used are RKFK, Ölflex Classic 100 CY, FKKJ-EMC, or similar.
 Shield of the motor cable should be connected to ground/earth in both ends. On motor side an
EMC-gland is to be used.
 Shield of motor cable is to be connected to ground terminal in the drive itself. For IP20 drives
the shield can instead be clamped to the mounting plate with a clip.
 Motor must also be well attached into the mechanical frame of the machinery and have the
same potential as the electrical cabinet. Separate earth connection might be necessary.
 Motor cable should avoid to be installed close to telephone-, network- or signal wiring.
Minimum distance is 10 cm.
M ~
U
V
W
L1
L2
L3
 Protective grounding of motor is connected to drive
 Motor cable should be connected to U, V, W.
 Inverter Power supply 3*400 VAC:
- Rated voltage of motor 230/400, Star connection
- Rated voltage of motor 400/660, Delta connection