ERICO TSG Series Surge Reduction Filters (TSG-RSF) - Manual (Page 10)

www.erico.com 10
Identify the Distribution System
Figure 5. TT system: A system having one point of the source of energy earthed and the exposed conductive
parts of the installation connected to independent earthed electrodes.
Figure 6. Split-phase distribution systems.
CRITEC TSG-SRFs provide protection for
equipment on TN-C, TN-S, TN-C-S, TT, delta
or split-phase distribution systems when
selected, installed and earthed in the speci-
fied manner.
The TSG-SRFs are designed to be used in
distribution systems that provide a separate
earth and neutral connection. TSG-SRFs
should not be used in IT distribution systems.
(Figure 7).
Specialist application advice should be sought
in the protection of delta supplied three-
phase systems (Figure 8) before the purchase
of the protection equipment.
E535IS06ENAS 10/6/06 11:12 AM Page 10