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The Development of Electrical Performance Testing Technology for Contactors
- The data processing in the literature mainly focuses on the calculation of power grid frequency and power factors
How to get the relay time parameter
- Therefore, when the contact circuit is connected to the AC circuit, the contact instantaneous value between the contacts to determine the size of the contact closed and off the state, the error will be great, so no accurate value.s
What is the effect of the open contact of the AC contactor and the pushbutton switch?
- Loosen the start button, although the button is disconnected from the coil, the coil is still passed through the auxiliary contact Control line connected, still have electric pull.s
What are the principles of selection of contactors?
- When the rated current of the contactor main contact is selected, the rated current of the main contact shall be equal to the rated current of the loads
Three-phase AC contactor has several terminals that have a role
- Hello, the general three-phase contactor a total of 8 points, three input, three output, there are two control points.s
What does the contactor lock mean?
- If the contactor is not self-protected, you hold the start button and it is running, let it stop.s
The working principle of permanent magnet AC contactor
- According to the needs of the scene, with the control of electronic modules to control the set the release voltage value can also be delayed for some times
On the difference between the contactor and the relay
- so that the contactor to work the current is also very large, that is to say its control circuit flows through the current is very large, with ordinary relays difficult to turn off its control circuits
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