SHARDA Electronics & Co. Low Voltage APP Capacitor
  • Low Voltage APP Capacitor
  • Low Voltage APP Capacitor
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SHARDA ELECTRONICS & CO1 SHARDA ELECTRONICS & CO2 SHARDA ELECTRONICS & CO3 SHARDA ELECTRONICS & CO4 SHARDA ELECTRONICS & CO5
 
 

Low Voltage APP capacitors, Surge Capacitors, High Voltage Capacitors, MPP Heavy Duty Capacitors, Panel Mounted APP Capacitors, Manufacturer, India

SHARDA CAPACITOR MANUFACTURING FACILITY


 
WINDING
WINDING :
 
Power Capacitor Contains several elements which are wound by winding two layers of aluminium foil interleaved by many layers of PP film having extended foil construction. The aluminium foil winding is Edge folded throughout the length of winding and also end folding at the beginning and end of the winding. The ideal manufacturing condition involve the use of temperature Control & filtered Air Conditioning system in which environment of winding is free from dust , moisture etc.
 
ELEMENT TESTING
ELEMENT TESTING :
 
The winding elements are individually inspected and tested before being send in batches to the processing area. Dry element testing is necessary to confirm the voltage withstand capacity, design parameters etc.
 
ELEMENT PACK ASSEMBLY
ELEMENT PACK ASSEMBLY :
 
No. of elements are packed together in series / parallel group separated by insulating paper as per design. This pack is pressed on pneumatic press under desired pressure and Firmly held by insulating strips.
 
SOLDERING, CONNECTION
SOLDERING, CONNECTION, WRAPPING :
 
The extended portion of the elements is soldered with special soldering material by special type of gas flame gun on both sides of pack of specific width. The connection terminals, discharge resistors plate fitting, paper insulation wrapping is done. The insulation level shall be strictly observed while wrapping to avoid terminal to body breakdown. This dry pack is tested for DC voltage. Its capacitance value is measured to confirm the design requirement. This pack is housed in sheet steel container fitted with leads upon which are mounted in two porcelain bushings. The small hole is kept open on top plate for pre drying and impregnation.
 
IMPREGNATION :
 
The next important process is vaccum drying and impregnation of capacitors. The Container assembled winding packs are loaded in impregnation chamber. When they are dried under elevated temp. and under vaccum ,then impregnating fluid is filtered taken through vaccum dehydrating and degassing processes before it passes,still under vaccum to the impregnation chamber. After impregnation the capacitors are left for soaking period. Then capacitors are unloaded. This impregnation process is the heart of capacitor manufacturing.
 
ELECTRICAL TESTING
ELECTRICAL TESTING :
 
After completing the impregnation processes each & every capacitor is tested for leakage check at elevated temp. in the chamber. Capacitors are electrically tested as per IS & IEC Specifications to ensure the design data, quality parameters etc.
 
1. ROUTINE TESTS :
a. Measurement Of Capacitance.
b. Capacitor loss tangent (tan δ) measurement.
c. Voltage test between terminals
d. A.C. Voltage test between terminals & container.
e. Test of discharge device
f. Sealing test.
 
2. TYPE TESTS :
a. Thermal stability test.
b. Capacitor loss tangent (tan δ) measurement at elevated temp.
c. A.C. Voltage test between terminals & container.
d. Lighting impulse voltage test between terminal & container.
e. Short Circuit discharge test.
 
PAINTING :
 
Successfully passing through final electrical testing and Quality Control parameters capacitors are painted with a special primer and then epoxy painting.
 
FINISHING :
 

After completing these processes and finishing  with other accessories like Name plate, Nut Bolts etc. , the Capacitors will be ready for dispatch.

 
OUR CONTACT
Plot No.105, Yashwantnagar, Sangli, 416416
Maharashtra., INDIA
+ 91 - 233 - 2645875, 2645775
+ 91 - 233 - 2645775
www.shardacapacitor.com
www.htcapacitors.net
www.surgecapacitors.net
www.mppcapacitors.com