Glossary term
SELV
cablageBasics
Also known as
Safety Extra Low VoltageTBTS
Definition
Electrical classification for Safety Extra-Low Voltage. The KNX TP1 bus (30 V DC) is classified as SELV: it may share conduits with other SELV circuits, but must be kept separate from 230 V wiring.
Questions using this term
- The spare wire pair (white/yellow) of the KNX bus cable may be used for which of the following?KNX Installation · Bus cable types, installation & distribution boards
- Which voltage is used for the KNX TP bus?KNX Installation · SELV networks & insulation
- What does the abbreviation SELV mean, and what is its key property?KNX Installation · SELV networks & insulation
- What is the permitted voltage range in a SELV network?KNX Installation · SELV networks & insulation
- Below which voltages is NO special protection against direct contact required?KNX Installation · SELV networks & insulation
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