आज हम कान्टैक्टर क्या होता है, कैसे काम करता है। कान्टैक्टर में NO NC क्या होता है तथा पॉवर और कन्ट्रोल कान्टैक्टर के बीच अंतर को जान लेंगे?
तो कृपया इस वीडियो को अंत तक देखें |
a contactor is an electrical switching device. It is used for switching an electrical circuit on and off. It is a special type of relay, but there is a basic difference between the contactor and a relay. The contactor is mostly used in applications where higher current carrying capacity is involved, while the relays are used for lower current applications. Contactors are compact and can be field mounted easily. Usually, these devices feature multiple contacts. The contacts are mostly normally open, and they provide operating power to the load whenever the contactor coil is powered. Contactors are popularly used with electric motors.
Operating Principle of a Contactor:
The operating principle of the contactor is quite simple; the current flowing through the contactor energizes the electromagnet. The energized electromagnet then creates a magnetic field. This causes the core of the contactor to move the armature. The circuit is then completed between the fixed and moving contacts by a normally closed (NC) contact allowing the current to pass through the contacts to the load. When the current is stopped from passing through, the coil is de-energized and opens the circuit. The contactors contacts are able to rapidly open and close, which is why they are able to handle larger loads. Since contactors are designed to rapidly open and close contacts, moving contacts may bounce as they rapidly collide with fixed contacts. Bifurcated contacts are used in many contactors to avoid bouncing.
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contactor kaise kaam karta hai
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कंडक्टर कैसे बने
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25 мар 2020
