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System Manual – MOVITRAC® 07
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Selection of the braking resistor
Project Planning
Example
When an intermittent braking power of 7 kW is needed with a cyclic duration factor of 30
%, this requires a braking resistor with a continuous power of 2 kW, for example BW247.
Grid resistor 230 V
Braking resistor type
BW039-003
BW039-006
BW039-012
BW039-026
BW027-006
BW027-012
Load capacity
100 % cdf
0.3 kW
0.6 kW
1.2 kW
2.6 kW
0.6 kW
1.2 kW
Resistance value
R
BW
39
Ω
±
10 %
27
Ω
±
10 %
Trip current of F16
I
F
2.0 A
RMS
3.2 A
RMS
4.2 A
RMS
7.8 A
RMS
2.5 A
RMS
4.4 A
RMS
Enclosure
IP20 (when mounted)
For MOVITRAC
®
07A...-2..
015/022
015 ... 037
05814AXX
Figure 49: Grid resistor 230 V
P = Intermittent power [kW]
cdf = Cyclic duration factor of the braking resistor [%]
100 % cdf = Continuous power [kW]
Содержание MOVITRAC 07
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