12.5W-3000W,Power Type Wirewound Variable Resistors ,Potentiometers
Structure :
1.BCI series Variable Rheostat is wound with copper or chromium-alloy wire as a resistance element. Except for the slide contact surface,the entire component is coated with a high-temperature,non-flammable resin.After cooling and drying,insulation is applied through a high-temperature process.
Then a centered rotatingadjuster component is installed,which slides along the resistance element and varies the resistance to the desired value.
2.Single unit with multiple winding resistance values is available.
3.Different ceramic raw material & knobs,made-to-order rheostats available.
Features:
1.BC1 series Variable Rheostats called varistors or potentiometers.
2.Used as two connections terminals of varistors or as a potentiometer with three connection terminals.When single rheostat cannot meet its power, which can be increased by connection of multiple rheostats,max up to 6 connected rheostats.
Specification:
| Performance Charactertics | |
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | B---D---F---G---J--K |
| Rated Load | 40℃,rated voltage,1hour | △R≤±(3％+0.1Ω) |
| Short Time Overload | 5 times rated power for 10s | △R≤±(0.2％+0.1Ω) |
| Dielectric Withstand Voltage | 2 times Rated Power Voltage +1kv AC 60s (with grounding), leakage current 2.5mA ;
2 times Rated Power Voltage +2kv AC 60s (with grounding), leakage current 2.5mA ; | △R≤±(0.1％+0.05Ω) |
| Insulation Resistance | 500V DC | ≥10GΩ1Min |
| Terminal Tensile Strength | 40N | No off |
| Vibration resistance | 1.5mm,10-55-10Hz,each 2hours | No damage,No off |
| Load Life | at rated voltage,90 min "On",30 min "Off" ,total 500hours | △R≤±(3％+0.1Ω) |
| Low Temperature Resistance Testing | store at -65℃±3℃ for 2H | △R≤±(1%+0.1Ω) |
| High Temperature Resistance Testing | store at 70 ℃± 2 ℃ for 16h, connect the rated voltage DC circuit for 1s | △R≤±(1%+0.1Ω) |
| Non-flammability | 10 times rated power, power on for 5s | without combustion |
Applications
Widely Widely used in the scope of the application includes:
1.Mixer,fan,and electric tools.
2.Motor controller to control motor speed.
3.Test the instrument to provide data accuracy.
4.Load test,load equipment,speed regulation of industrial machinery,voltage and current regulation,instruments,automatic control devices,etc.
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12.5W-3000W Power Wirewound Resistor Variable Potentiometers Images
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