OBO system solutions for photovoltaic systems - OBO Bettermann

Protect the heart of the photovoltaic system
Our system solutions for the protection of the inverter
Buildings without external lightning protection
Surge protection for the current inverter
– the heart of the system – is
particularly important on buildings
without external lightning protection.
A protection system should cover
6
Location Description U DC max Type Article No. Figure
A
B
C
3-pin complete unit 1,000 V V20-C/3-PH-1000 509460 8
2-pin complete unit 1,000 V V20-C/2-PH-1000 509461 7
System solution in housing 1,000 V VG-C/DC-PH-MS 1000 5088 69 1
System solution in housing with
MC 4 connector
745 V VG-C/DC-PH 550 5088 69 0
230 V (L, N, PE) V20-C/1+NPE-280 509465 0
230/400 V (L1, L2, L3, N, PE) V20-C/3+NPE-280 5094 656
Equipotential bonding rail
VDE-tested
all at-risk lines that are connected to
the current inverter. The DC surge
arrester (protection circuits up to
1,000 V DC available) must be
matched to the maximum no-load
External lightning protection is not necessary or required. A type 2 surge protection is sufficient.
Solar module Power inverter
DC
protection
PAS
AC
protectio
Main distribution
voltage of the solar module. The
maximum no-load voltage is typically
up to 20% above the indicated noload
voltage (U OC STC ).
Energy
network
tributor box with protection device is greater
than 10 m line length
1801 VDE 5015 650
Note: An equipotential qu bonding between the metallic PV framework and the main m equipotential bonding g should be created.
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