Braking Resistor/Unit Selection - IACDRIVE I5000 Series Operation Manual

Installation Dimension and External Dimension for 380V
A（mm）
Power
(kW)
Installation Dimension
0.7~2.2 106.6
4.0~7.5 148
11~15 205
18.5~30 200
37~55 240.0
75~90 350
230*2
110~160
——
270*2
185~220
——
250~315 350*2

1.5 Braking resistor/unit selection

1.5.1 Selection reference
When all the control devices driven by the inverter need quick braking， the braking units
need to consume the energy which feedbacks to the DC bus. In SKI5000 series inverters， the
inverters below 15kW (including 15kW) are embedded with braking units and the inverters above
18.5kW (including 18.5kW) should select external braking units. It is necessary to select proper
braking resistor according to the inverter capacity. In the application with 100% braking torque
and 10% utilization rate of the braking unit， the braking resistor and braking unit are shown as
below. For the load which works in the braking state for a long time， it is necessary to adjust the
braking power according to the braking torque and utilization rate of the braking. Counting at a
long working time， the power of the braking resistor is:
p= CP8.16)2 IR
B（mm）
175
235
305
454
530
748
928
——
1028
——
1168
，
of which， R is the braking resistor.
H(mm) W(mm)
External Dimension
185 118
247 160
320 220
470 227
546 336
780 520
960 560
---- ----
1060 650
---- ----
1200 825
6
D(mm)
Installation
Hole（mm）
154 4
175 5
198 6
245 7
278 9.0
330 11.0
380 13
---- ——
400 13
---- ——
400 13