Lorsqu'un PBR (disjoncteur à air) détecte un défaut, il coupe rapidement le passage du courant dans le circuit et éteint l'arc électrique à l'aide d'air à haute pression.
Par conséquent, ils conviennent également à une large gamme d’applications commerciales et résidentielles.
Continuez à lire pour en savoir plus sur le fonctionnement détaillé de l’ACB, y compris les avantages, le dépannage et bien plus encore.
L'ACB possède plusieurs composants qui contribuent à son principe de fonctionnement, tels que :
En cas de problème, les contacts primaires et d'arc se séparent. Cette séparation est activée par le déclencheur, qui est constitué de relais thermiques ou de surintensité, lorsque le courant dépasse la limite en raison d'une surcharge ou d'un court-circuit.
Cependant, cette séparation crée un arc électrique. Par conséquent, les vannes de soufflage s'ouvrent, permettant à l'air à haute pression de circuler à travers les contacts d'arc et la goulotte. Cela contribue à le refroidir et à réduire la taille de l'arc électrique, garantissant ainsi une interruption sûre du flux électrique. vidéo pourrait vous aider à mieux comprendre et à visualiser visuellement le processus de l'ACB.
| Taper | Opération | Application |
| PBR à rupture simple | Le type le plus courant, qui comporte deux contacts qui se déconnectent l'un de l'autre pour empêcher le passage du courant. Ils utilisent simplement l'air et les chambres de coupure pour éteindre l'arc électrique. | Couramment utilisé pour la basse tension (en dessous de 450v) et les applications qui ne nécessitent pas de fonctionnalités avancées. |
| ACB à éruption magnétique | Il est doté de bobines de soufflage qui créent un champ magnétique, ce qui crée un Force de LorentzCela rapproche rapidement l'arc électrique de la chambre de coupure, où il est éteint plus efficacement par l'air à l'intérieur. | Préférable pour les applications impliquant un flux électrique élevé car il offre une protection et une extinction supérieures contre les courts-circuits ou les surcharges. |
| PBR débrochable | Leur mécanisme de déclenchement est comparable à celui des disjoncteurs à rupture simple. Cependant, cette conception permet de les retirer facilement du boîtier pour les entretenir ou les remplacer. | Convient aux environnements industriels qui nécessitent des modifications et un entretien fréquents et nécessaires. |
Il s'agit d'un dispositif qui protège les systèmes électriques contre diverses erreurs, notamment les surcharges et les courts-circuits. De plus, ils peuvent gérer d'énormes quantités d'électricité et disposent souvent de paramètres de déclenchement réglables. Ils sont donc adaptés à de nombreuses applications industrielles.
Enfin, ils sont considérés comme plus respectueux de l’environnement et plus sûrs car ils utilisent de l’air au lieu de l’huile ou des produits chimiques pour éteindre l’arc électrique.
L’un des problèmes les plus courants que vous pourriez rencontrer lors de l’utilisation de ces appareils est « déclenchement intempestif ». Cela peut entraîner un blocage inutile du flux électrique, ce qui perturbe le fonctionnement. Par conséquent, pensez à ajuster les paramètres de déclenchement ou à vérifier s'ils présentent actuellement une faible résistance d'isolement et des connexions défectueuses, ce qui amène les capteurs à donner de fausses lectures en l'absence de surintensité ou de court-circuit.
Si l'appareil ne trébuche pas En cas de défaut électrique, comme une surintensité, vérifiez si les conditions ambiantes sont idéales pour eux, car ils sont également sensibles à la chaleur ou à l'humidité extrêmes. De plus, assurez-vous que tous les composants et les lignes de connexion, y compris les capteurs tels que les relais thermiques, sont correctement serrés, positionnés et non endommagés.
Si le problème persiste, consultez le manuel du fabricant pour obtenir des conseils de dépannage ou remplacez l'ACB si nécessaire.
L'ACB est réputé pour son efficacité énergétique car il peut rapidement arrêter des courants importants et réduire les pertes d'électricité possibles en cas d'erreurs du système électrique. Cependant, plusieurs composants consomment de l'énergie jusqu'à ce que l'arc soit séparé et refroidi, ce qui entraîne des pertes de l'ACB pendant son fonctionnement.
Mais l’une des tendances croissantes est que de nombreux fabricants intègrent des pratiques respectueuses de l’environnement lors de la production de leurs produits, y compris l’ACB, en utilisant :
De plus, certains fabricants intègrent également des technologies uniques dans leurs disjoncteurs comme IoT (Internet des objets) pour améliorer leur facilité d’utilisation pour les clients. Même si l’intégration de telles technologies reste encore rare aujourd’hui.
Si vous recherchez un fabricant possédant une vaste expérience dans le domaine des disjoncteurs, Je suis tout le chemin pourrait être celui qu'il vous faut. iALLWay propose plusieurs types d'ACB qui peuvent être ajustés à vos besoins spécifiques, notamment :
N'hésitez donc pas à demander conseil à un professionnel de iALLWay et même à obtenir dès maintenant un devis pour votre système électrique.
Ressources:
Dépannage des problèmes ACB courants
Principes de fonctionnement et avantages des disjoncteurs à air
Tout ce que vous devez savoir sur les disjoncteurs à air comprimé (ACB)
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