Damping Absorption Capacitor

Application:

The capacitor adopts advanced technology and mature production process, and is made of polypropylene Oil immersed full film high voltage power electronics with film, electrical aluminum foil and oil as main production materials capacitor. This product is mainly used for overvoltage protection of high-power semiconductor devices, and is widely used Applied to electrolysis, electroplating, metallurgy, industrial electric furnace, etc., especially in aerospace and orbit . It has outstanding performance in the fields of transportation, new energy and smart grid.

Features:

The capacitor adopts two or more layers of polypropylene film medium, and the electrical aluminum foil is the electrode plate, with stable capacity, Low voltage, high voltage resistance, large dV / dt value, able to withstand the impact of high peak current and high voltage repeatedly hit.

The impregnating agent is filled in the drying technology under high vacuum, which increases the withstand voltage of the capacitor to a greater extent.

Reduce the loss tangent value (tanδ) of the capacitor.

The capacitor end face and lead wire are reliably welded by soldering, with dense contact, low resistance and good conductivity with strong overcurrent capacity.

The lead out electrode adopts PBT polymer insulator, which has high withstand voltage and no oil leakage.

Cylindrical aluminum shell,  beautiful appearance,  good heat dissipation performance.

The product is small in size, light in weight and easy to install.

Work Condition:

Altitude: ≤ 1000m

Ambient temperature: - 40 ℃ ~ 70 ℃

Relative humidity: ≤ 95%

Installation conditions: no gas or steam that seriously corrodes the metal around, and no violent mechanical movement, No conductive or explosive dust, etc.

Technical Parameters:

Executive standard: Power Electronic Capacitors (GB / T 17702.1-2013).

Product voltage range: 0.5kvac-10kvac

Product capacity range: 0.01 ~ 50 µ F

Capacity deviation: ± 5%, ± 10%

Tangent of loss angle of capacitor at 1000Hz frequency (Tan δ） ≤0.0003

Insulation resistance between terminals: ≥ 3000s

Test voltage between terminals: DC voltage test 2.15Un or AC voltage test 1.5Un, time 10s.

Test voltage of terminal and housing: 2Ui + 1000V or 2000V, whichever is greater.

Capacitor tightness test: no leakage under the constant temperature of 70 ℃± 5 ℃ for 4 hours.

Charging and discharging between terminals: withstand more than 10⁶ times of charging and discharging under the rated voltage.

Production Process:

The core components of the capacitor are high-quality double-sided roughened polypropylene film, electrical aluminum foil as the electrode, and cylindrical element made by non inductive winding.

The components are coated by tin, the electrode plate and the lead wire are closely welded, finalized assembly process put into the cylindrical aluminum shell.

After rolling and pressing the shell and cover, the positions are completely sealed except for the oil sealing hole above the cover.

Entering the tank, the capacitor is pumped with high vacuum (vacuum degree is within 1pA) and then injected with low-temperature insulating oil.

The products are cleaned, sealed at 75 ± 5 ℃ and tested, then packaged and put into storage.