¶ APPENDIX C. ELECTRICAL CONNECTION OF ELECTRIC MOTORS
On the label of three-phase motors, the rated voltage and required connection are always indicated, e.g., 230V. This means that 230V may be connected to each phase winding. If this motor is connected to a 400-volt network, its windings must be connected in star (see table). When connected in star, the phase voltage is therefore 400 V: = 230V.
| Network Voltage | 690V | 400V | 230V |
|---|---|---|---|
| Phase Voltage | 400 V | Y | Δ |
| 230V | Y | Δ |
of the motor with thermistor.
of the motor with thermistor.
of the motor winding connection.
B: Terminal box with thermistor
C: Winding terminals
A: Frequency converter
B: Running Fault
C: On/Off
D: Fan motor
E: Typical connection of the fan motor with Danfoss FC51 frequency converter - control from the terminal box.
A: On/Off
B: Running Fault
C: EC fan motor
D: Typical connection of the EC fan motor Ziehl-Abbeg
D: Typical connection of the EC fan motor Ziehl-Abbeg
A: ModBus
B: Frequency converter
C: Fan motor
D: Typical connection of the fan motor with Danfoss FC51 frequency converter - ModBus control