TECHTOP TD350 - Standard Wiring of Main Circuit

TD350 Series VFD Installation guidelines
-23-
4.3 Standard wiring of main circuit
4.3.1 Wiring diagram of main circuit
3-PH power supply
50/60Hz
Braking resistor
Fuse
Input
reactor
Input
filter
Output
reactor
Output
filter
VFD
Fig 4.7 Connection diagram of main circuit for the VFD of 220V ≤15kW and 460V ≤30kW
3-PH power supply
50/60Hz
Fuse
Input
reactor
Input
filter
DC reactor
Braking unit
Braking resistor
Output
reactor
Output
filter
VFD
Fig 4.8 Connection diagram of main circuit for the VFDs of 220V 18.5–55kW, and 460V ≥37kW
Note:
 The fuse, DC reactor, brake unit, brake resistor, input reactor, input filter, output reactor, and
output filter are optional parts. See Appendix D "Optional peripheral accessories" for details.
 P1 and (+) are short circuited in factory for VFDs of 220V (≥18.5kW), 460V (≥37kW). If you
need to use them to connect the DC rector, remove the contact tag between P1 and (+).
 When connecting the brake resistor, take off the yellow warning signs marked with (+) and (-)
on the terminal block before connecting the brake resistor wire. Otherwise, poor contact may
occur.
3-PH power supply
50/60Hz
Fuse
Input
reactor
Input
filter
Output
reactor
Output
filter
VFD
Braking resistor
Fig 4.9 Connection diagram of main circuit for the VFDs of 575V 0.75–18.5kW