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motor
24 V d.c. < 4 A
wind / rain sensor
smoke detector No. Surge protective device Part No.

DG M TN 275 (TN-S system) 952 200
DG M TT 2 P 275 (TT system) 952 110
fire control BXT ML4 BE 24 920 324
panel 3* + BXT BAS 920 300
2*
4*
2 x BXT ML4 BE 24 920 324
230 V / 50 Hz + 2 x BXT BAS 920 300
BXT ML4 BE 36 (1.8 A) 920 336
+ BXT BAS or 920 300
2 x BVT ALD 36 (4 A) 918 408
6* 4* (6*)
BXT ML2 BE S 24 920 224
SDS VS + BXT BAS 920 300
=

6* Alternative
4* (6*)
TL2 10DA CC 907 991
SDS VS DRL 10 B 180 FSD 907 401
EF 10 DRL 907 498
8 x DRL RE 24 907 422
* Minimum number of required cores
(observe manufacturers’ instructions)
Figure 9.27.4 Domelight located on a non-metal roof of a structure without external lightning protection system

sents a fire hazard. Lightning current arresters are not capa- Therefore, surge arresters must be installed to protect the
ble of coping with direct lightning strikes to the domelights. structure from inductive coupling (Figure 9.27.4).

414 LIGHTNING PROTECTION GUIDE www.dehn-international.com