User manual

Chapter 3 Wiring
© 1999 DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
10
CH 3-2 External Wiring
Item Explanation
Power
supply
Please follow the specific power supply
requirement shown in APPENDIX-A.
FUSE or
NFB
There may be inrush current during
power up. Please select the correct
fuse with rated current from the chart on
next page.
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.
AC
Reactor
(Optional)
In order to improve the power factor. An
AC Reactor may be necessary when
capacity is above 1000kVA, and the
wiring distance is within 10m.
EMI filter
(Optional)
To reduce the electromagnetic
interference.
Please refer to Appendix B for detailed
information on EMI filters
DC Link
Reactor
(Optional)
Please wire to manufacturer’s
specification to avoid damage to the AC
drive.
Braking
Resistor
(Optional)
Used to reduce stopping time of the
motor. Select MVR200W120 or
MVR200W200, depending on the
application.