Table of contents
3.3.4
Installation altitude ............................................................................................................ 39
4
Application planning ........................................................................................................................... 41
4.1
4.2
4.3
4.4
4.5
Operation on a TN system .................................................................................................. 43
4.6
Operation on a TT system .................................................................................................. 44
4.7
Operation on an IT system ................................................................................................. 45
4.8
4.9
4.10
24 V DC supply voltage ...................................................................................................... 47
4.10.1
Selecting power supply ...................................................................................................... 47
4.10.2
4.10.3
4.10.4
Overcurrent protection....................................................................................................... 50
4.10.5
Overvoltage protection ...................................................................................................... 51
4.10.5.1
4.10.5.2
4.11
Cable lengths..................................................................................................................... 54
4.11.1
4.11.2
4.11.3
4.12
signal cables ..................................................................................................................... 57
4.12.1
4.12.2
4.12.3
4.12.4
4.13
Power losses ...................................................................................................................... 60
4.13.1
4.13.2
4.13.3
4.13.4
4.14
4.14.1
4.14.2
Electromagnetic compatibility (EMC).................................................................................. 65
4.14.3
4.14.4
EMC category .................................................................................................................... 66
4.14.5
4.14.5.1
4.14.5.2
4.14.5.3
4.14.5.4
4.14.6
4
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA