Page 224 - 35_DS702_E_2014_Lightning_Protection_Guide

external LPS lightning current arrester sub-distribution board surge arrester terminal devices
main distribution board

protection as per IEC 62305 (EN 62305)
protection as per IEC 60364-4-443
F1
L1
L2
RCD
Wh L3
N
SEB
PE
F2 F3

MEB local EBB

Figure 8.1.3.5 SPDs used in a TN-S system

L1 L2 L3 NPE
type 3 surge arrester type 3 surge arrester

heating controller socket outlet
1 2
heating
DEHNrail DR M 2P 255 FM
cable length ≥ 5 m P ROTECTOR

1 x DPRO 230
1 x DPRO 230 F Part No. 909 230
Part No. 909 240
1 x DR M 2P 255 Part No. 953 200 1 x SFL PRO Part No. 912 260
16 A
KW h
As an alternative, surge arresters
type 1 combined arrester (e.g. DG M TNC 275 Part No. 952 300)
L1 L1' L2 L2' L3 L3'
can also be used downstream of meter
panels if there is no
DEHNventil DV MOD 255 DEHNventil DV MOD 255 DEHNventil DV MOD 255 – lightning protection system
– electrical power supply via the service central MDB / SDB
entry mast
– antenna of the roof
PEN
1x DV M TNC 255 Part No. 951 300 – if none of the conditions mentioned
alt. 1x DV M TNC 255 FM Part No. 951 305 above applies to an adjoining building
≤ 315 A
MEB
L1 L2 L3 PEN
Figure 8.1.3.6 SPDs used in a TN system – Single-family house

www.dehn-international.com LIGHTNING PROTECTION GUIDE 223