Universal Sintered Products and Machinery Is the perfect solution for carbon industry.We Manufacture Various machines which are use to make the carbon Brushes ,Carbon Blocks,Carbon Vanes,Etc. Which has the larger application in various industries like Automobiles, Power tools, sugar,textile,paper mill railways. Etc.This Brushes Can be Use for various application like power tools,Automobile,Industrial ,Electrical etc.
Universal Sintered Products and Machinery is the only solution for providing the Testing Equipments Required for measuring the characteristics of brushes. Various Testing instruments are required such as density tester, resistance tester , hardness tester, voltage drop tester, pig tail pull tester, transverse strength testing Machine etc.All this equipments are designed as per as Indian Standard and calibrated with the standard piece.
Millivolt tester is use to determine the Voltage Drop at Contact of carbon brushes.
Procedure :
Suitable millivolt meter (accuracy class 2.5 percent or better) shall be used for this measurement, the selected range to give an indication of not less than 20 percent full scale deflection. The measuring current shall be the same as that used to conduct the contact drop test. In view of the negligible errors introduced the effect of temperature rise may be ignored. One voltage probe is to be applied to the brush body 5 mm above the sliding surface.
The other voltage probe, of pointed stainless steel, shall be applied to the brush terminal. The value of contact drop voltage obtained by this test shall conform to the values declared by the manufacturer.