Beijer Electronics Frequency Inverter BFI-P2
KI00306B 2020-03
www.beijer.se www.beijer.no www.beijer.dk
www.beijerelectronics.com www.beijerelectronics.de www.beijerelektronik.com.tr
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4.6 Overview of power supply, grounding and motor cable
3-phase and single-phase drives
Drive is to be connected with ground/PE by separate grounding wire.
1-phase power supply should be connected to L1/L, L2/N. L3 is not accessible.
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 have shield.
400V
230V
690V
400V
STAR
DELTA
Motor cable must be a 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 being installed close to telephone-, network- or signal wiring.
Minimum distance is 30 cm.
M ~
U
V
W
L1/L
L2/N
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
Inverter Power supply 1*230 VAC
-
Rated voltage of motor 230/400, Delta connection
