GDHY C72 ac filter capacitor metallized film capacitors ac motor start capacitor

The symbol of the filter capacitor in the circuit is generally represented by "C". In the rectifier circuit of 50 Hz commercial power, in order to obtain a good filtering effect, the capacitance of the selected filter capacitor is relatively large. But in the case of tens of kilohertz or even higher frequencies, the requirements for frequency characteristics are much more important than the requirements for capacitance.                                                                                                                                  

AC filter capacitors are used in power rectifier circuits to filter out AC components. Make the output DC smoother. And for precision circuits, the combination of parallel capacitor circuits is often used at this time to improve the working effect of filter capacitors. Low-frequency filter capacitors are mainly used for mains filtering or filtering after transformer rectification, and their operating frequency is 50Hz consistent with the mains; while high-frequency filter capacitors are mainly used for filtering after rectification of switching power supplies, and their operating frequency is several thousand Hz to several million Hz. Filter capacitors play a very important role in switching power supplies.                                                                                                 
First feature of the metallized film capacitors filter capacitor is low temperature rise. The temperature has a great relationship. The higher the temperature, the lower the service life. The filter film capacitor has the characteristics of low temperature rise, which can ensure its service life. Second is low loss. Dielectric loss tangent (tgδ): ≤0.002. Third is safety. Compliant with GB and IEC standards, the internal single capacitors are equipped with protection devices; when the line or single capacitor is abnormal, the protection device will act immediately and automatically cut off the power supply to prevent the occurrence of secondary disasters. The AC motor start capacitor is equipped with a discharge resistor to ensure the safety of electricity and maintenance. The shell is stamped from steel plate, and the inside and outside are coated with high-temperature baking paint with good weather resistance, which is extremely safe. Small size and light weight, easy to carry and install brings a large convenience.    

● Aluminum round case package, perfused with epoxy resin

● Tinned copper nut or copper screw, plastic cover located

● High withstand voltage, self-healing

● High ripple current, high dv/dt withstand capability

● Large capacitance, small size, easy installation                                                                           

Widely used in power electronic equipment used for the AC filter. Acting as AC filter,harmonic control and power factor improvement in high power UPS, switching power supply, frequency converter and other equipment.