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If the contactor is engaged when the machine is turned on, the fan is working at this time, and the press is not working (the capacitance is good), the contactor can be preliminarily judged to be bad. Because both the press and the external fan are controlled by the normally open contacts of the contactor, the contact work is synchronized. If one of them works, the other does not work, which can be roughly judged as contact with the bad.
2. Listen: a. Listen to whether there is a very loud squeak, if there is, it may be (1) the power supply voltage is low; (2) There is dirt on the contact point or dirt on the contact surface of the moving and static iron core. If you hear the sound of click-contactor not being able to suck it, there are two situations: (1) the power supply voltage is low; (2) The contact suction is not enough.
3. Smell: Smell whether there is any burnt smell, if so, please check the windings and contacts.
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Hello, why don't you connect the contactor of Wubi air conditioner? Normally open and normally closed point, this can be done without turning on according to the built-in content of the required air conditioner, I hope it can help you.
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You just need to remember to connect normally open if you want to connect self-locking, and normally close if you connect to interlocking, mainly depending on the application of the equipment circuit diagram.
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Ah, five horses air conditioner, basically the receiver needs to be connected to a scene, or to pick one, if he has two open or long arms, and he doesn't pick up, then she must not use it again.
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Because the auxiliary contacts of the contactor are used to transmit signals, you should not need a signal in that piece, so there is no connection.
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If the five-horse air conditioner contactor is not connected, if it is normally open and normally closed, it may be a problem that the installer is more proficient in.
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If you have a 5 HP air conditioner contactor, if you don't touch it, it's a man.
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Under normal circumstances, he has to connect the contactor to an open or a factory B, he will definitely choose a person for two signal points, if you don't know, then sure, is the contactor used?
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5 HP air conditioner contactor does not open normally open and normally closed interval because it is such a problem.
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Summary. The time-controlled switch can be used without connecting to the AC contactor. First of all, it is necessary to understand why the time-controlled switch should be connected to the AC contactor, rather than blindly adding.
The direct load of the Bluetooth time-controlled switch is recommended to not exceed 1320W, and when the electrical power of the connected load is less than 1320W, it can be directly controlled by the time-controlled switch. Wiring diagram of time-controlled switch AC contactor plays the role of turning on or off the power switch in the circuit. That is to say, when the electrical power of the load connected to the time control switch is greater than 1320W, it is necessary to add an AC contactor to avoid the time control switch being burned out.
After the AC contactor is installed, the AC contactor is controlled by the time-controlled switch, and the AC contactor controls the electrical appliances. The time-controlled switch is wired with the AC contactor. 1.
The fire zero of the air switch is connected to the inlet of the time-controlled switch. 2.The fire zero of the air switch is connected to L1 and L2 of the AC contactor.
3.The outgoing wire of the timing switch is connected to A1 and A2 of the AC contactor. 4.
The T1 and T2 of the AC contactor are connected to the electrical appliance, I hope mine can help you!
Three-phase five-horse air conditioner, with time-controlled switch, do not need AC contactors.
<>Hello dear, I am happy to answer for you, three-phase five-horse air conditioner, do you need AC contactor with time-controlled switch.
The time-controlled switch can be used without connecting to the AC contactor. First of all, it is necessary to understand why the time-controlled switch should be connected to the AC contactor, rather than blindly adding. The direct load of the Bluetooth time-controlled switch is recommended not to exceed 1320W, and when the electrical power of the connected load is less than 1320W, it can be directly controlled by the time-controlled switch.
Wiring diagram of time-controlled switch: AC contactor plays the role of turning on or off the power switch in the circuit. That is to say, when the electrical power of the load connected to the time control switch is greater than 1320W, it is necessary to add an AC contactor to avoid the time control switch being burned out. After the AC contactor is installed, the AC contactor is controlled by the time-controlled switch, and the AC contactor controls the electrical appliances.
The time-controlled switch is wired with the AC contact bridge. 1.The fire zero of the air switch is connected to the inlet of the time-controlled switch.
2.The fire zero of the air switch is connected to L1 and L2 of the AC contactor. 3.
The outgoing wire of the timing switch is connected to A1 and A2 of the AC contactor. 4.The T1 and T2 of the AC contactor are connected to the electrical appliance, I hope mine can help you!
Contactors. Control protection circuit, for reference:
Contactor working principle:
When the coil is energized, the static iron core generates electromagnetic attraction and engages the moving iron core, because the contact system is linked with the moving iron core, so the moving iron core drives the three moving contacts to run at the same time, and the contacts are closed, so as to connect the power supply. When the coil is de-energized, the suction disappears, and the linkage part of the moving core is separated by the reaction force of the spring, so that the main contact is disconnected and the power supply is cut off. >>>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
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.
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