4 Installation
4.5.8
Erecting the Double-Break Assembly
The coupling bolt 10.9 on the corner gear should be removed and laid out ready for later use.
Remove the 90° offset jack rings 1.8 and laid out ready for the next insulator column.
Attention
During assembly work, the open insulator column should be protected against atmospheric influences
using suitable covers.
Remove the packaging cover from the insulator column and read the moisture indicator on the inside of the cover
immediately.
Handling the humidity indicator
The effectiveness of the drying agent can be determined using the humidity indicator.
In its initial state (dry) the indicator display is blue. If the relative humidity increases, the indicator display changes
from blue to pink.
When taking the reading, check which semicircle is the most pink or is already lighter than the area around all the
semicircles. (Fig. 39). The relative humidity in % is above this figure, but still below the next higher figure.
)
Note
The humidity value reading may not exceed 40 %. If the humidity value is above this, inform the nearest
Siemens representative!
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