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220 volts is a group of live wires and a group of neutral wires, 380 volts is two groups of live wires and a group of neutral wires, 380 volts are suitable for large load power, 220 volts are suitable for small load power.
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No, if the control supply voltage is 380 volts, you must use an AC contactor with a coil of 380 volts. Similarly, a 220 volt AC contactor can only be used in a line with a control voltage of 220 volts
The working principle of the AC contactor is to use the electromagnetic force and the spring elastic force to match the contact to realize the connection and breaking of the contact. AC contactors have two working states: power-loss state (release state) and power-up state (action state).
When the suction coil is energized, the static iron core generates electromagnetic attraction, the armature is sucked, and the connecting rod connected with the armature drives the contact action, so that the normally closed contact breaker is in an energized state; When the suction coil is de-energized, the electromagnetic attraction disappears, the armature is reopened, the normally open contact is closed, the position spring is released, and all the contacts are reset accordingly, and the contactor is in a state of power loss.
AC contactors often use three arc extinguishing methods: double-fracture electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the dynamic and static contacts in the process of splitting and closing. Contactors with a capacity of more than 10 A have arc extinguishing devices.
AC contactors also have auxiliary components such as reaction springs, buffer springs, contact pressure springs, transmission mechanisms, bases and binding posts.
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The coil voltage does not match, and it is generally not suitable for use In your case, it can be used in an emergency, and there are two ways: 1. Add a transformer, turn 220 to 380 2, add two diodes, one for half-wave rectification, and one for freewheeling (this method is only used in emergencies).
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It is necessary to change the coil with a rated voltage of 220V.
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Of course, you can, but the AC contactor coil needs to be closed with a 220V power supply.
AC contactor 380V and 220V is the voltage of the electromagnetic coil, which has nothing to do with the main contact, the main contact can be 380V page, 220V, or 36V, all in all, how many V voltage is OK. Some machines use 24V voltage for solenoid coils, which is in consideration of operator safety. The motor voltage is still 380V voltage.
The voltage of the contactor is generally the specified coil voltage, mainly 380V, 220V. The voltage of the main circuit mainly depends on the voltage on the line.
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Summary. Hello, no.
If the control supply voltage is 380 volts, you must use an AC contactor with a coil of 380 volts. Similarly, a 220 volt AC contactor can only be used in a line with a control voltage of 220 volts
Can a 380V voltage be controlled with a 220V AC contactor?
Hello, no, no, if the control power supply voltage is 380 volts, you must use an AC contactor with a coil of 380 volts. Similarly, a 220 volt AC contactor can only be used in a line with a control voltage of 220 volts
Because it can't be used in the first place, and then it's mandatory to use it, and it's okay at first, but slowly the problem will appear.
It's burned out. A 380 coil must be used.
Good. You give it a try.
If you don't understand, you can continue to ask me.
Contactors. Control protection circuit, for reference:
AC contactor wiring: AC contactor often adopts three arc extinguishing methods: double-fracture electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the dynamic and static contacts in the process of splitting and closing. Contactors with a capacity of more than 10 A have arc extinguishing devices. >>>More
Let me tell you a basic common sense, for the human body, the voltage below 36V is safe, when the voltage is higher than 36V, it will cause electric shock. However, the injury caused by electric shock depends on the state of the human body at that time, and the resistance of the human body is not stable. However, according to your question, if the human body is directly connected to the circuit, if there is no other resistor in this circuit, people should finish playing, but there is an exception, there is a resistance in the circuit that connects your human body to a much larger resistance than yours, and it is connected in series with you, you are safe, because as long as the voltage distributed to you is less than 36V, it will be fine.
Household 220V is alternating current.
1. Direct current: refers to the current that does not change periodically in direction and time, but the current magnitude may not be fixed, and the waveform is generated. Also known as constant current. The circuit through which it passes is called a DC circuit, which is a closed conductive circuit composed of a DC power supply and a resistor. >>>More
Generally, the three-phase contactor has a total of 8 points, three inputs, three outputs, and two control points. The output and input are corresponding, and it is easy to see. If you want to add self-locking, you also need to connect the wire from one of the terminals at the output point to the control point. >>>More