Page 197 - Electrical Safety of Low Voltage Systems

180 Chapter Te n

Endnotes

1. See Chap. 15 for more details.
2. Voltages exceeding the above limits, up to 1 kV a.c. and 1.5 kV d.c., are consid-
ered low voltages.
3. As already defined in Chap. 2, the double insulation comprises both basic and
supplementary insulations. The reinforced insulation is a single insulation sys-
tem, which provides the same degree of protection against electric shock as the
double insulation.
4. The protective separation between the windings of the safety transformer ren-
ders the SELV system equivalent to Class II equipment for which bonding is
not permitted.