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Operating instructions
| EN | 1HC0076149 AC
3.3.2
Application guidelines
The following guidelines apply for the use of POLIM®-C surge arresters:
„Application guidelines - Overvoltage protection“
Dimensioning, testing and application of metal-oxide surge arrresters in medium voltage systems,
pamphlet 1HC0075561
„Application guidelines - Overvoltage pRotection“
Dimensioning, testing and application of metal-oxide surge arrresters in railway facilities, pamphlet
1HC0075573
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
Position
Maximum
torque
[Nm]
Minimum
screw-in depth
[mm]
Maximum
screw-in depth
[mm]
M12
Head end terminal 42
18
22
M12
Foot end terminal
42
18
22
3.3.4
Behaviour in fire
The silicone housing of the surge arrester is self-extinguishing.
4
Transportation, unpacking and storage
4.1
Transportation
CAUTION!
Surge arresters not secured during transportation.
Damage to surge arresters that have fallen during transport.
X
Secure surge arresters against sliding or falling before transportation.
X
Observe safety precautions printed on the packaging for proper handling during transportation
and storage.
4.2
Unpacking
The surge arresters provided are packaged in stable cardboard boxes or wooden crates.
The routine test report for the final electrical inspection is included in the packaging material.
X
After receiving the shipment, compare the order and delivery documents immediately to check for
completeness and accuracy of the shipment. In case of incompleteness or deviations, inform the
supplier and shipper immediately.
WARNING!
Damaged surge arresters.
Material damage and personal injury due to the installation and commissioning of damaged surge
arresters.
X
Do
not
use damaged surge arresters.
X
Examine shipment immediately to check for damage.
X
Notify the insurance company, the shipper and the supplier of the damage immediately and create
a damage log.
