Delta VFD-B User Manual

Appendix B Accessories|VFD-B Series
Revision July 2008, BE16, SW V4.08 & V5.00 B-35
Inductance (mH)
kW HP
Fundamental
Amps
Max.
continuous
Amps
3% impedance 5% impedance
18.5
25
25 37.5 1.2 1.8
22
30
35 52.5 0.8 1.2
30
40
45 67.5 0.7 1.2
37
50
55 82.5 0.5 0.85
45
60
80 120 0.4 0.7
55
75
80 120 0.4 0.7
75
100
100 150 0.3 0.45
B.6.3 Applications for AC Reactor
Connected in input circuit
Application 1 Question
When more than one AC motor drive is
connected to the same power, one of them is
ON during operation.
When applying to one of the AC motor drive,
the charge current of capacity may cause
voltage ripple. The AC motor drive may
damage when over current occurs during
operation.
Correct wiring
M1
M2
Mn
reactor
AC motor drive
AC motor drive
AC motor drive
motor
motor
motor
Application 2 Question
Silicon rectifier and AC motor drive is
connected to the same power.
Surges will be generated at the instant of
silicon rectifier switching on/off. These surges
may damage the mains circuit.

Delta VFD-B Specifications

General

Series	VFD-B
Power Range	0.4kW to 15kW
Control Method	V/F Control, Sensorless Vector Control
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Communication	RS-485
Protection Features	Over-voltage, Over-current, Overheat, Under-voltage, Ground fault, Short circuit