8. Permanent insulation monitors for IT networks
8.1 Operating principle
These devices are designed to be installed in fixed positions to continuously monitor the earth insulation of IT networks where no point is connected to earth. However, the advantages of this formula disappear if the insulation develops a fault, and the purpose of these controllers is to trigger an alarm when the insulation resistance falls below a pre-programmed level.
SCROLL TO TOP8.2 Permanent insulation monitors for AC networks
The principle adopted is to measure insulation by means...
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Permanent insulation monitors for IT networks
Bibliography
References
Standardization
French standards (NF) AFNOR (Association française de normalisation)
- Installations électriques à basse tension. - NF C 15-100 - déc. 2002
- Travaux sous tension. Détecteurs de tension. Partie 5 : systèmes détecteurs de tension (VDS). Indice de classement C 18-310. - NF EN 61243-5 - juin 2002
- Degrés de protection...
Manufacturers
Chauvin-Arnoux http://www.chauvin-arnoux.com
French instrumentation http://www.distrame.fr
LEM (Experts in Measuring Electricity) http://www.lem.com
...
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