RVS28 28mm rvs28 potentiometer carbon film rotary potentiometer for welding machine
Description:
Rotary potentiometers can produce a linear or logarithmic output with tolerances of typically 10 to 20 percent. As they are mechanically controlled, they can be used to the measure the rotation of a shaft, but a single-turn rotary potentiometer normally offers less than 300 degrees of angular movement from minimum to maximum resistance. However, multi-turn potentiometers, called trimmers, are available that allow for a higher degree of rotational accuracy.
Mechanical specifications:
| Total rotation angel | 260°±10° |
| Rotation torque | 30-200gf.cm |
| Stop torque | ≥5kgf.cm |
Electrical specifications:
| Total resistance | Measurement shall be made by the resistance between terminal R1and R3. | 10KΩ |
| Resistance taper | Resistance changes | B |
| Total Resistance tolerance | Measurement shall be made by the resistance tolerance between terminal R1 and R3. | ± 20% |
| Rated power | Rated power is based on continuous full load operation at the maximum voltage between terminal R1 and R3. | 0.5W(50 ℃) |
| Residual resistance | Test residual resistance beteen terminal R1 and R2; terminal R2 and R3 | R≤10KΩ R0≤20Ω 10KΩ<R≤100KΩ R0≤30Ω 100KΩ<R≤250KΩ R0≤50Ω R≥250KΩ R0≤0.1% |
| Rotation of noise | The murmur will appear when shaft turn from terminal 1 to terminal 3 by 30 rounds/minute equably speed. | ≤47mV |
| Voltage proof | Input more then one minute voltage between terminals and shell. | 2500VAC |
| Max. operation voltage | Maximal voltage which sustained by terminal R1 and R3 | 50VAC |
| Operating temperature | Potentiometer of the performance guarantee for the use ambient temperature | -30℃~70℃ |
| Insulation resistance | Test voltage:DC 500V, Test position: Between terminal and case | 200MΩ |
Others:
| Rotation life | After 10,000 rotation after the test, the changes impacted no more than ± (15% R +0.5 Ω) rotational noise of not more than 100 mv |
| Terminal strength | After welding (350℃, 3,5 seconds) after the of terminal contacts should be good, no termination loosening of |
| Soldering ability | Dip the terminals into tin tank at 235°C±5°C for 5±0.5 seconds, the soldering area should be more than 90%. |