ABB POLIM 4.5 ID, Operating Instructions Manual

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1HC0075079 AB | EN | Operating instructions |
5
Thanks to its extra high energy absorbing capability, the POLIM®4.5 ID is especially suited for over-
voltage protection of
ƒ
locomotives and other apparatuses in railway applications
The POLIM®4.5 ID is intended to be used indoors.
3.3 Technical data
The technical data, dimensions and weights are specified in the following documents:
ƒ
Surge arrester POLIM®4.5 ID for applications in d.c. systems in the pamphlet 1HC0075852.
ƒ
POLIM®4.5 ID dimensional drawing HAWA 380212
3.3.1 Technical data on the surge arrester
The rating plate contains the following data:
Data Meaning
POLIM®4.5 ID Complete type designation with specification of the maximum permissible
continuous operating voltage U
c
I
n
= 40 kA Nominal discharge current
U
c
= ... kV
dc
Maximum permissible continuous operating voltage (d.c. voltage)
U
r
= ... kV
dc
Rated voltage (d.c. voltage)
HA … Serial number
xx-20xx Date of manufacture: month-year
3.3.2 Application guidelines
The following guidelines apply for the use of POLIM®4.5 ID surge arresters:
ƒ
„Application guidelines“ for railway systems, 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 / High
voltage terminal 48 18 25
3.3.4 Behaviour in fire
The silicone housing of the surge arrester is self-extinguishing.