SLM1-2 Casing Single-Head Electric Heating Tube Structure: The heating tube has a single lead wire from one end, and the other end is connected to the element. It is also divided into soft wire lead-out, screw rod lead-out, and screw hole lead-out (directly screw into the terminal). Voltage: 6-440V, normally 36V, 55V. Recommended specifications: 6︿14×60︿100
SLM1-2 Casing Single-Head Electric Heating Element Dimension Drawing Display:
SLM1-2 Casing Single-Head Electric Heating Tube models include: SLM1-1 Casing Single-Head Electric Heating Tube, SLM1-3 Casing Single-Head Electric Heating Tube, SLM1-4 Casing Single-Head Electric Heating Tube
A. Calculation of resistance for single-head electric heating element casing single-head electric heating tube
Example: 220V 1500W heating tube
P=1500 watts (power) U=220 volts (voltage) Find: I (current)
I=P/U=1500/220≈6.82 amps
Ohm's law Find: R (resistance)
R=U/I=220/6.82≈32.27 ohms
B. Common tests and inspections for casing single-head electric heating tubes
1. Resistance inspection, cold-state withstand voltage inspection, cold-state insulation inspection.
2. Power inspection, hot-state insulation inspection, hot-state withstand voltage inspection, leakage current inspection.
3. Damp heat test, salt spray test, life test, and other mechanical tests.
C. Performance requirements for casing single-head electric heating tubes
1. Heating-up time: Under the test voltage, the time for the element to rise from ambient temperature to test temperature should not exceed 15 minutes. 2. Rated power deviation: Under conditions of sufficient heating, the deviation of the element's rated power should not exceed the specified range;
2. Ability to withstand on-off cycles: The element should be able to undergo 2000 on-off tests under specified test conditions without damage.
3. Overload capacity: The element should withstand 30 cycles of overload tests under specified test conditions and input power without damage.
4. Heat resistance: The element should withstand 1000 cycles of heat resistance tests under specified test conditions and test voltage without damage.
D. Precautions for using casing single-head electric heating tubes
1. The element should be stored in a dry place. If the insulation resistance drops below 1 megohm due to long-term storage, it can be dried in an oven at about 200°C for several hours (or pass low voltage through the element for several hours) to restore the insulation resistance.
2. If carbon deposits are found on the tube surface, they must be completely removed before use to avoid reducing efficiency or even burning out the element.
3. When melting solid oils such as asphalt and paraffin, the voltage should be reduced, and then raised to the rated voltage after melting, to prevent concentration of electricity and reduce the service life of the element.
Features: Casing single-head electric heating tube
Model: SLM1
Structure: The heating tube has a single lead wire from one end, and the other end is connected to the element.
It is also divided into soft wire lead-out, screw rod lead-out, and screw hole lead-out (directly screw into the terminal)
Voltage: 6-440V, normally 36V, 55V
Power: Determined by negotiation between customer and our factory
Recommended specifications: 6︿14×60︿100
Specifications:
Voltage: 6-440V, normally 36V, 55V
Power: Determined by negotiation between customer and our factory
Recommended specifications: 6︿14×60︿100
