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Technical
Section 11
Dimensions
Section 12
4
iPRD surge arresters
Type 2 or 3 LV withdrawable surge arresters (cont.)
Protection
Load protection
4P
2P
Catalogue number iPRD surge arresters
Rated discharge
current (Imax)
Nominal
discharge
current (In)
Type of protection Network
Incoming Secondary 1P+N
3P+N
iPRD65
65 kA
Very high risk level
(strongly exposed site)
20 kA
iPRD65
A9L65501
A9L65601
iPRD40
40 kA
High risk level
15 kA
iPRD40
A9L40501
A9L40500
A9L40601
A9L40600
iPRD20
20 kA
Medium risk level
5 kA
iPRD20
A9L20501
A9L20500
A9L20601
A9L20600
iPRD8
8 kA
Secondary protection:
placed near the loads to
be protected when they
are at a distance of more
than 10 m from the
incoming surge arrester
2.5 kA
iPRD8
A9L08501
A9L08500
A9L08601
A9L08600
iPRD withdrawable surge arresters allow quick
replacement of damaged cartridges.
Type 2 surge arresters are tested with a 8/20 μs current
wave.
Type 3 surge arresters are tested with a 1.2/50 μs and
8/20 μs combined wave.
Each surge arrester in the range has a specific application:
b
b
incoming protection (type 2):
v
v
the iPRD65r is recommended for a very high risk level (strongly exposed site)
v
v
the iPRD40(r) is recommended for a high risk level
v
v
the iPRD20(r) is recommended for a medium risk level
b
b
secondary protection (type 2 or 3):
v
v
the iPRD8(r) ensures secondary protection of loads to be protected and is placed
in cascade with the incoming surge arresters. This surge arrester is required when
the loads to be protected are at a distance of more than 10 m from the incoming
surge arrester.
The iPRD surge arresters with “r” indication have remote transfer of the information:
“cartridge to be replaced”.
DB123854
DB106604
e
Country approval pictograms
DB122942
DB122943
PB110274-35
PB110280-35