Keba SO84.115.S - Cooling the Step-Up Choke

Operation Manual ServoOne Supply Unit
25
ID no.: 1101.21B.6-00 Date:04/2020
3.6.2 Cooling the step-up choke
The step-up choke is a primary source of heat and is to be treated as a hotspot
component. This component is cooled by natural air convection (gravity circulation).
To exploit effectively this physical effect, this component should be mounted in the lower
plinth area of the switch cabinet on robust mounting rails (that permit unhindered air
flow from below).
On selecting the position, the area of the air inlet at the filter mat or, even better, at the
fan blowing in air is to be recommended.
NOTE:
It is imperative you wire the temperature sensor integrated into the winding on
the step-up choke to terminal X5 for temperature monitoring!
A1
A
H
T
D1
B
Figure 3.16 Dimensional drawing, step-up choke, based on BG5 and BG6a as an example
A1
A
H
T
ØD1
ØD2
B
Figure 3.17 Dimensional drawing, step-up choke, based on BG7 as an example
Mechanical installation