For insulation coordination, the protection level the
SPDs must less than equal the rated impulse
voltage the electrical system according IEC
60364-5-53. Table 3.5 kV
OBO SPD protection level: 1.Choosing the right surge protection devices
The classification surge protection devices into
types means they can matched different require-
ments with regard location, protection level and cur-
rent-carrying capacity.3: SPDs zone transitions
TBS
Blitzschutz-Leitfaden
2018
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Chapter The internal lightning protection system
. the sub-distributor/storey distributor
V20
Item no.
Devices: Type (class III),
e.: V20
Required surge voltage resistance: 1.g.
Zone transition Protection device and device type Product example Product figure
LPZ LPZ
1
SPD for lightning protection equipotential bonding ac-
cording IEC 62305 for direct nearby lightning
strikes.g. g.:
5092451
Table 3.g.
Devices: Type (class II),
e.: ÜSM-A
Required surge voltage resistance: 1.:
5096987
LPZ LPZ 2
SPD for equipotential bonding according IEC
60364 case surge voltages.3 kV
Installation e.
Devices: Type (class I)/type 1+2 (class I+II),
e.3 kV
Installation e. also shows which
OBO surge protection devices can installed the
energy supply network and their respective function.5 kV
Installation e.g.5 kV
OBO SPD protection level: 1.3 below provides an
overview the zone transitions. the main distributor/at the entrance
to the building
MCF100-
3+NPE+FS
Item no.g. directly front the terminal
ÜSM-A
Item no.: MCF100-3+NPE+FS
Required surge voltage resistance: kV
OBO SPD protection level: 1.:
5095253
LPZ LPZ 3
Surge protection for surge protection the terminals
