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Operating instructions for POLIM
3.3.2.
Application guidelines
The following guidelines apply for the use of POLIM
3.3.3.
Recommended torques and screw-in depths
The specified values in the table below apply for steel bolts of strength class 8.8 in
aluminum nut threads.
Thread
M10
3.3.4.
Behaviour in fire
The silicone housing of the surge arrester is self-extinguishing.
8
©
R surge arrester
"Application guidelines - Overvoltage potection"
Dimensioning, testing and application of metal-oxide surge arrresters in
medium voltage systems, pamphlet 1HC0075561
"Application guidelines - Overvoltage potection"
Dimensioning, testing and application of metal-oxide surge arrresters in
railway facilities, pamphlet 1HC0075573
Position
Head end
terminal
®
Torque
Minimum
[Nm]
screw-in depth
30
EN
-R surge arresters:
Maximum
screw-in depth
[mm]
[mm]
12
16
Doc. 1HC0075743 AA
ABB
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