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Mica capacitor is a reliable and high precision capacitor, that uses mica as the dielectric to store electric charge. These are very stable and very accurate. Their capacitance changes little overtime. Mica capacitors have low resistive and inductive losses (high Q factor). Their characteristics are mostly frequency-independent, which allows for their use at high frequency. Silver Mica capacitors have tolerances as low as 1%.
They are made with cut condensor films that are thoroughly cleaned with the help of de-greasing agents and are then silvered on both sides by screen printing process. There is perfect adhesion between mica and silver which results in optimum performance of the plates. Individual plates are used in the manufacturing of single film mica capacitors, whereas multiple pieces are used for all other types.
They are made of multiple layers of parallel printed silvered mica plates interleaved with tin/lead foil. A pre-determined number of plates are stacked together to arrive at the required capacitances for the finished capacitors. Thick pieces of plain mica is used as backing on either side to reinforce the units. The finished units are then dipped in solvent and subjected to pressure with heat to make the units compact.
The individual pieces of stacked units are cut into sections with the means of a saw cutting machine The cut units we get after the cutting are the capacitors themselves without the final touches of terminals and coatings.
In this type, multiple layers of over-the-edge printed mica are stacked together. These units do not have any foil but use the silver itself for the purpose of termination. The units are edge bonded using high content silver paste on which the terminals are directly soldered.
DM capacitors are clamped units having radial terminals that are powder coated with electronic grade epoxy. The process is repeated a number of times, to achieve the desired dimensions and complete encapsulation of the product.
These are finished mica capacitors impregnated in electrical grade epoxy and provided with terminals ready for mounting. These capacitors are widely used in transmission lines and are manufactured over a wide voltage and capacitance range. These are custom manufactured based on requirements.
These are finished mica capacitors impregnated in electrical grade epoxy and provided with radial terminals ready for mounting. These capacitors are widely used in transmission lines and are manufactured over a wide voltage and capacitance range. These are custom manufactured based on requirements.
We have also developed in house capability to manufacture high frequency, high voltage mica capacitors with voltage ratings of 6500 to 10000pF. We can manufacture customized high voltage capacitors based on the client’s requirements.
High Voltage High Current Cylindrical Type Mica Capacitor are designed for frequencies ranging from 0.1MHz to 3 MHz ideal for high current and high voltage circuits like broad casting, welding, induction heating and especially for RF application & also high frequency equipment.
These are high frequency mica capacitors that are applicable for high-current and high-voltage circuits like radio transmitters. They can be manufactured to suit voltage range of upto 40 KV and can be custom manufactured based on the capacitance requirements. These capacitors are cast in cylindrical cases to provide easy mounting and terminal connections. They are very reliable and work effectively in harsh environments, over a wide temperature range.
Partial Discharge coupling capacitor is a special type of capacitor used to couple PD signal and fed to the measuring instruments. PD coupling capacitor energizes and couples signal when the discharge occurs in any void between the copper conductor and insulation wall or internal to the insulation itself. PD signal is developed from defected or damaged insulation of transformer wires used mainly in sub-station, motor winding insulation, XPLE cable insulation etc.