SLM1-2 Casing Single-Head Electric Heating Tube Structure: The heating tube has a single wire leading out from one end, and the other end is connected to the component. It is also divided into soft wire lead, screw lead, and screw hole lead (directly screw into the terminal). Voltage: 6-440V, normal 36V, 55V. Recommended specifications: 6︿14×60︿100
SLM1-2 Casing Single-Head Electric Heating Element Dimension Diagram:
SLM1-2 Casing Single-Head Electric Heating Tube models include: SLM1-1 Casing Single-Head Electric Heating Tube, S 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=1500W (power) U=220V (voltage) Find: I (current)
I=P/U=1500/220≈6.82 A
Ohm's Law Find: R (resistance)
R=U/I=220/6.82≈32.27 Ω
B. Common Tests and Inspections for Casing Single-Head Electric Heating Tube
1. Resistance test, cold withstand voltage test, cold insulation test.
2. Power test, hot insulation test, hot withstand voltage test, leakage current test.
3. Damp heat test, salt spray test, life test, and other mechanical tests.
C. Performance Requirements for Casing Single-Head Electric Heating Tube
1. Heating time: Under 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 full heating conditions, the deviation of the element's rated power should not exceed the specified range.
2. Ability to withstand power on/off: The element should be able to undergo 2000 power on/off tests under specified test conditions without damage.
3. Overload capacity: The element should withstand 30 cycles of overload test under specified test conditions and input power without damage.
4. Heat resistance: The element should withstand 1000 cycles of heat resistance test under specified test conditions and test voltage without damage.
D. Precautions for Using Casing Single-Head Electric Heating Tube
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 apply low voltage for several hours) to restore 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, reduce the voltage during melting, then increase to rated voltage after melting to prevent concentrated power from reducing the element's service life.
Features: Casing Single-Head Electric Heating Tube
Model: SLM1
Structure: The heating tube has a single wire leading out from one end, and the other end is connected to the component.
Also divided into soft wire lead, screw lead, and screw hole lead (directly screw into the terminal)
Voltage: 6-440V, normal 36V, 55V
Power: Determined by customer and factory negotiation
Recommended specifications: 6︿14×60︿100
Specifications:
Voltage: 6-440V, normal 36V, 55V
Power: Determined by customer and factory negotiation
Recommended specifications: 6︿14×60︿100 
