What are the reasons for the short circuit or open circuit of the single-head electric heating tube?

What are the reasons for the short circuit or open circuit of the single-head electric heating tube?

1. The distance between the two holes through the lead wire is too close, causing the single-head electric heating tube to short circuit.
2. The position of the heating area of the electric heating tube has been moved to the lead-out port and exposed to the air.
3. Excessive temperature is a sufficient and necessary condition for short circuit caused by the rated voltage of the second lead wire.
4. When in use, the aperture of the mold hole is horn-shaped. This is due to the defect of the module drilling process, which affects the heat conduction.
5. The nozzle of the warhead electric heating tube appears loose at the end of the lead wire, which affects the heat conduction and air breakdown, and causes the single-head electric heating tube to short circuit.
6. The distance between the inferior sealing silica gel and the first circle of screws at the root of the lead wire is too close, and the production process is produced at this time.
7. Using iron, chromium and aluminum as the excessive resistivity of the lead wire to increase the temperature of the lead wire of the electric heating tube and cause an accident.

1. Mold heating has been accepted by a wide range of customers in modern industrial applications.
2. Heating system in plastic machinery.
3. Pharmaceutical production line.
4. Laboratory heat treatment test.
5. Chemical industry, etc.

What is the relationship between the rated voltage and the working voltage?

1. If the customer bought 1 tube

Then the customer must connect the working voltage of 220V when going back. If the working voltage of 380V is connected, the pipe will burn out due to excessive surface load. (According to the formula voltage * voltage = power * resistance)

2. If the customer has purchased multiple heating pipes connected together

1. When connected in parallel, the working voltage is equal to the rated voltage of each tube, that is, 220V.

2. When connected in series, the working voltage is equal to the sum of the rated voltage of each tube, namely 440V.

Three: If the customer buys 3 tubes or a multiple of 3 tubes,

1. In the case of the triangular wiring method, the working voltage is equal to the rated voltage of each tube, that is, 220V.

2. In the case of the star type (Y type) wiring method, the working voltage is equal to the rated voltage of each tube *1.732=220V*1.732≈380V, which is 380V.

So from the above point of view, the rated voltage determines how many volts the final working voltage is connected.

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