Delta Electronics VFD-L Series Especificaciones descargar pdf (Pagina 15)

3

VFD-M Series

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3-3

3.2 External Wiring

Motor

Output AC

Line Reactor

Power Supply

Magnetic

contactor

Input AC

Line Reactor

EMI Filter

R/L1 S/L2

T/L3

U/T1 V/T2

W/T3

B1

B2

Braking

Resistor

Zero-phase

Reactor

Zero-phase

Reactor

FUSE/NFB

Items Explanations

Power

supply

Please follow the specific power

supply requirement shown in

APPENDIX A.

Fuse/NFB

(Optional)

There may be inrush current during

power up. Please check the chart of

APPENDIX B and select the correct

fuse with rated current. NFB is

optional.

Magnetic

contactor

(Optional)

Please do not use a Magnetic

contactor as the I/O switch of the AC

drive, this will reduce the operating

life cycle of the AC drive.

Input AC

Line

Reactor

(Optional)

Used to improve the input power

factor to reduce harmonics and

provide protection from AC line

disturbances. (Surge, switching

spike, power flick, etc.) AC line

reactor should be installed when the

power supply capacity is 500kVA or

more and exceeds 6 times of the

inverter capacity, or the wiring

distance exceeds 10m.

Zero-phase

Reactor

(Ferrite

Core

Common

Choke)

(Optional)

Zero phase reactors are used to

reduce radio noise especially when

audio equipment installed near the

inverter. Effective for noise reduction

on both the input and output sides.

Attenuation quality is good for a

wide range from AM band to 10Mhz.

Appendix B specifies zero phase

reactors. (RF220X00A)

EMI filter

(Optional)

To reduce electromagnetic

interference. Please refer to

Appendix B for detail.

Braking

Resistor

(Optional)

Used to reduce stopping time of the

motor. Please refer to the chart on

Appendix B for specific Braking

Resistors.

Output AC

Line

Reactor

(Optional)

Motor surge voltage amplitudes

depending on motor cable length.

For long motor cable applications

(>10m), it is necessary to install on

the inverter output side.

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