Delta Electronics VFD-M manual large-capacity, small-capacity, AC motor drive, power, reactor

Models: VFD-M

1 173
Download 173 pages 14.33 Kb
Page 154
Image 154
large-capacity

 

 

 

Appendix B Accessories

Application 2

 

 

Question

Silicon rectifier and AC motor drive

Switching spikes will be generated when the silicon

are connected to the same power.

rectifier switches on/off. These spikes may damage the

 

 

mains circuit.

Correct wiring

 

 

 

 

 

 

Silicon Controlled Rectifier

power

 

reactor

 

 

 

 

 

 

 

DC

 

 

 

AC motor drive

 

 

reactor

motor

 

 

 

Application 3

 

 

Question

Used to improve the input power factor, to

When the mains power capacity is too large,

reduce harmonics and provide protection

line impedance will be small and the charge

from AC line disturbances (surges, switching

current will be too high. This may damage AC

spikes, short interruptions, etc.). The AC line

motor drive due to higher rectifier

reactor should be installed when the power

temperature.

supply capacity is 500kVA or more and

 

exceeds 6 times the inverter capacity, or the

 

mains wiring distance 10m.

 

 

 

Correct wiring

 

 

 

large-capacity

 

 

small-capacity

 

 

AC motor drive

power

reactor

small-capacity motor

Revision May 2008, ME14, SW V3.04

B-9

Page 154
Image 154
Delta Electronics VFD-M manual large-capacity, small-capacity, AC motor drive, power, reactor