What is the difference between 220v and 380v heating tube? The electric heating tube used as the heating element is also the heating tube. Wiring method, the following is a detailed explanation of the difference and nature of the two.
What is the difference between 220v and 380v heating tube:
There are 380V and 220V heating tubes, and how to use it depends on the specific conditions of the equipment. The current of the 380V heating tube is smaller than that of the 220V heating tube under the condition of uniform power, that is, the current of the 1WK 380 heating tube is 2A, and the current of the 1WK 220V heating tube is about 4.5. The 380 heating tube needs a three-phase power supply. So when choosing a wire. It's finer. 220V heating tube when choosing the wire. The thicker one is fine, but the number of wires required is less than that of the 380. It can also be said that each has its own strengths.
380V and 220V heating tubes have the same heating efficiency under the same power. The security is the same. 380v coils are used more in the previous electronic control systems. Directly taking the two-phase power supply can have the function of phase failure protection. Nowadays, safe use of electricity is advocated. Isolation transformers are used to provide the control power supply. The 220v control power supply is basically used on ordinary equipment. 110v is generally used as the control power supply voltage level of machine tool electrical.
A three-phase motor has a phase difference of 120 degrees within 360 degrees of an electrical cycle, and is evenly distributed; a unidirectional motor is actually two-phase, one phase is the power supply live wire, and the other is the live wire connected to the capacitor with a 90-degree lagging voltage. Within 360 degrees, the two-phase difference is 90 degrees, uneven and asymmetrical, so the performance and stability of the three-phase motor are much better than that of the one-way motor. Single-phase motors not only have poor performance and low power factor, but also interfere with the return of the power grid. This is the reason why the TV has snowflakes when the hair dryer is turned on. In high-power, high torque and speed control situations, only three-phase motors are available.
The difference between 220v and 380v heating tube:
1. The voltage of 380v is the voltage between two phase wires, which is generally used for large-capacity electrical appliances such as power demand; the voltage of 220v is the voltage difference between a phase wire and a neutral wire, which is generally used for lighting , Small appliances.
2. The 380 is generally suitable for controlling electrical equipment that does not allow phase loss, such as three-phase motors. Generally, phases A and C are used. Two-thirds of a phase loss and phase loss fault may be released by the magnet. It is easy to check the fault with an electric pen; 220 control is generally suitable for obtaining electricity separately. Multiple sharing. The load is not connected with the control. It is general to check the fault with an electric pen.
Four wiring methods for heating tube 220v and 380v:
1. Series connection: In series connection, the total voltage of the electric heating tube is equal to the voltage of each phase. Then the total voltage of the three 220V heating tubes is 220*3=660V. Obviously, this wiring method is not used.
2. Parallel connection: In parallel connection, the total voltage of the electric heating tube is equal to the voltage of each phase. Then the total voltage of the three 220V heating tubes is 220V, so it is not connected to a 380V power supply.
3. Delta connection method: In this connection, the total voltage of the electric heating tube is equal to the voltage of each phase. That is to say, the three 220V heating tubes should be connected to the 220V power supply.
4. Star connection method: Using this connection method, the total voltage of the electric heating tube is equal to the voltage of each phase *1.732. That is to say, three 220V heating tubes should be connected to a power supply of 220*1.732 approximately equal to 380V.