Brochure/Catalogue

Type I and II lightning arrester
Electrical connection for building installation
The type 1 VPU I series lightning arrester is connected
between the external conductors (L1, L2, L3) and N/PE. The
N/PE spark gap is produced with the VPU I LCF N-PE 50 kA
or 100 kA. Cables as short as possible should be used.
The maximum permissible operating voltage U
C
is 280 V AC.
Decoupling to downstream type II arresters is not necessary.
Please note the installation instructions.
Energy co-ordination
The maximum permissible operating voltage Uc is 330 or
440 V AC. Decoupling from downstream type II arresters is
unnecessary because triggered sparkover gaps with a low
sparkover voltage are used.
Important: for Uc 330 V, VPU II is used with 280 V and for
Uc 440 V, the VPU II with 600 V.
Please follow the installation instructions.
Checking operation, maintenance and approvals
All arresters based on varistor technology have large status
windows. If the status window is red, the corresponding
arrester must be changed. With the VPU I LCF 35 kA
products, the entire unit must be replaced in the event of an
error message or a red status window.
Dimensional drawing VPU I
Width: 17
. 5 mm (1 x TE)
29
110.5
90
45
44
50
76
77.5
C
C.112028840000
Lightning and surge protection for low voltage supply