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Thanks to its high energy absorbing capability and mechanical strength, the POLIM®-C is especially
suited for overvoltage protection of
ƒ transformers
ƒ cables and cable sheat
ƒ capacitors
ƒ rotating machines
ƒ apparatuses in railway applications
ƒ other low- and medium-voltage apparatuses and systems
Variants of the surge arrester POLIM®-C suitable for the use in a.c. and d.c. systems are available.
The variants for d.c. systems differ from POLIM®-C surge arresters for a.c. systems by the appen-
dix D as second letter in the complete term of classification (e.g. POLIM®-C 2.0 ND, POLIM®-C 2.0
HD).
3.3
Technical data
The technical data, dimensions, weights and installation distances are specified in the following do-
cuments:
ƒ surge arrester POLIM®-C .. N for applications in a.c. systems in the pamphlet 1HC0075874
ƒ surge arrester POLIM®-C .. LB for applications in a.c. systems in the pamphlet PTHA 3272
ƒ surge arrester POLIM®-C .. ND for applications in d.c. systems in the pamphlet 1HC0075875
ƒ surge arrester POLIM®-C .. HD for applications in d.c. systems in the pamphlet 1HC0093986
ƒ dimensional drawings of POLIM®-C
3.3.1
Technical data on the surge arrester
The rating plate, molded in silicone, on labels or engraved, contains the following data:
Data
POLIM®-C
I
10 kA
n
I
.. kA
s
POLIM®-C .. N
POLIM®-C .. I
POLIM®-C .. LB
POLIM®-C .. ND
POLIM®-C .. ID
POLIM®-C .. HD
U
.. kV
c
U
.. kV
r
xx-20xx
1 ...
1HC0076149 AC | EN | Operating instructions
Meaning
Type designation
Nominal discharge current I
Rated short-circuit current I
Version for a.c. applications
Complete type designation with specification of the maximum permissible
continuous operating voltage U
Version for d.c. applications
Complete type designation with specification of the maximum permissible
continuous operating voltage U
Maximum permissible continuous operating voltage U
Rated voltage U
r
Date of manufacture: month - year
Fabrication number
n
for 0.2 sec
s
c
c
c
|
5
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