Compax3
Accessories
C3I20T11 / C3I32T11
378
192-120103 N13 C3I20T11 / C3I32T11 December 2010
9.4.1.1
Calculation of the BRM cooling time
BRM04/01 (230V_3AC)
100
1000
10000
0
0,5
1
1,5
2
2,5
3
3,5
4
Braking time [s]
P
B
d
y
n
[W
]
F = Factor
Cooling time = F * braking time
Example 1: For a braking time of 1s, a braking power of 1kW is required. The
Diagram shows the following:
The required values can be found in the range between characteristic F = 0.5 and
F = 1. In order to achieve operating safety, please select the higher factor, this
means that the required cooling time is 1s.
F
* Braking time
= cooling time
1
* 1s
= 1s
Example 2: For a braking time of 0.5s, a braking power of 3kW is required. The
Diagram shows the following:
The required values can be found in the range between characteristic F = 2 and F
= 5. In order to achieve operating safety, please select the higher factor, this
means that the required cooling time is 2.5s.
F
* Braking time
= cooling time
5
* 0.5s
= 2.5s
F=10
F=20
F=5
F=2
F=1
F=0.5
