Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles
This part of IEC61643 describes the principles for selection, operation, location and
coordination of SPDs to be connected to 50 Hz to 60 Hz a.c. and to d.c. power circuits and
equipment rated up to 1 000 V rom.s, or 1 500 V d.c.
NOTE 1 Additional requirements may be necessary for special applications such as electrical traction, etc.
NOTE 2 It should be remembered that IEC 60364 series and IEC 62305-4 are also applicable.
NOTE 3 This standard deals only with SPDs and not with SPDs components integrated inside equipment.