INVT DBU100H Series

Operational manual for dynamic braking unit
-17-
Crane(the height of lifting is more than 100m) K
f
＝20－40%
Occasionally braking load K
f
＝5%
Others K
f
＝10%
Basis of resistor calculation: the braking resistor needs to absorb all the regenerative electric
energy of the motor.
Absorbed power of the resistor(V*V/R)＝The regenerative electric energy of the motor (W)＝
1000*P*

Basis of resistor power calculation:
The regenerative electric energy of the motor needs to be absorbed by the resistor and
converted into heat to release.
P
R
=P* K
f
*

*

=P* K
f
*1.0*1.4
8.4 Usage standard and selection reference of the input voltage degree
for adaptation DBU (220V)
Below is the selection reference when the DC operating point of the braking unit is 380V:
Power
Model
100% of the
adaptation
braking
resistor of
the braking
torque(Ω)
Dissipated
power of the
braking
resistor(kW)
(10% of the
braking)
Dissipated
power of the
braking
resistor(kW)
(50% of the
braking)
Dissipated
power of the
braking
resistor(kW)
(80% of the
braking)
Mini
allowable
braking
resistor(Ω)
15kW
DBU100H-60-2
9.6
2
11
18
6.4
18kW
8.0
3
14
22
22kW
6.5
3
17
26
30kW
DBU100H-110-2
4.8
5
23
36
3.5
37kW
3.9
6
28
44
45kW
DBU100H-160-2
3.2
7
34
54
2.4
55kW
2.6
8
41
66
75kW
DBU100H-220-2
1.9
11
56
90
1.8
90kW
Two
DBU100H-160-2
1.6
7*2
34*2
54*2
2.4*2
110kW
1.3
9*2
43*2
66*2
8.5 Usage standard and selection reference of the input voltage degree
for adaptation DBU (380V)
Below is the selection reference when the DC operating point of the braking unit is 700V: