Self-Healing Low Voltage Power Capacitor for Reactive Power Compensation
Operating conditions: Ambient temperature -25℃ to +70℃, humidity ≤85%, altitude below 2000 meters.
Rated voltages: 250V, 280V, 300V, 400V, 415V, 450V, 480V, 525V, 690V, 750V, 1050V.
Rated capacity: 1 to 50kvar.
Capacity tolerance: -5 to +10%.
Loss tangent value: At the rated power frequency voltage, tgδ≤0.1% at 20℃ (1000Hz).
Ac withstand voltage: 2.15 times the rated voltage between poles for 10 seconds, 3KV between poles and shells for 10 seconds.
Maximum allowable overvoltage: 1.10 times the rated voltage.
Maximum allowable overcurrent: 1.30 times the rated current.
Self-discharge characteristic: When a √2Un DC voltage is applied to the capacitor and the power is disconnected for 3 minutes, the remaining voltage drops to 75V or lower.
Symbol standards: GB12747-2004, UL810, IEC60831-2014.
Product Overview
The tuned self-healing capacitor -HRDQ-TC can enhance the power factor of the power system, optimize the power quality of the power grid, and improve the reliability and stability of the power system. Reduce the power loss of the power grid and improve the output efficiency of transformers. The quality level is significantly higher than that of similar products in the domestic industry. It features low temperature rise, is more environmentally friendly, and has a lifespan of up to 100,000 hours.
Main features
The aluminum alloy shell cover plate, the touch-type terminal block is equipped with an internal pressure cut-off explosion-proof device, which is safe and reliable. The bottom is fitted with M12/M16 installation and grounding bolts. It adopts a dry structure and meets the highest environmental protection requirements.
The bolt lead-out method ensures reliable and stable wiring, meeting the requirements of large capacity and high current. M8/M10 copper bolts, capable of connecting cables up to 25mm ², with anti-electric shock protective covers.
The safe and reliable German-style overpressure explosion-proof structure and the built-in discharge resistor make the product safer and more reliable.
The long service life and multi-component design increase the heat dissipation area, making the temperature rise of the capacitor lower and extending its service life to 100,000 hours.
The metallized film used for capacitor components adopts a special square resistance design, which not only has a very high self-healing performance, but also meets the requirements of high-reliability contact and high withstand voltage.
It can be used in power systems to improve the power factor. Local compensation for inductive equipment such as motors, transformers and power frequency electric furnaces; The requirements for electric traction locomotives, UPS systems, and the filtering of harmonics in power systems and other aspects.
Product features
The tuned self-healing capacitor -HRDQ-TC is produced and processed with original imported film materials and equipment, avoiding the shortcomings of traditional power capacitors in the past. The base material of the original imported film material is HIPP high-standard vertical structure, featuring: It features low shrinkage, high mechanical strength, low dielectric loss coefficient, excellent low-temperature frequency characteristics, high withstand voltage strength, high resistivity, very few weak points, easy pretreatment for coating, high resistance to stretching, impact and needling, uniform and stable thickness, no plasticizer and slow aging, and uniform thickness in both the transverse and longitudinal directions. The design of the tuned self-healing capacitor ensures that it does not experience issues such as high-temperature oil leakage, wax leakage, or bulging of the casing like other power capacitors, significantly enhancing its safety performance.
The tuned self-healing capacitor -HRDQ-TC achieves an even better sealing level, with 100% sealing. There is no need to worry about capacitor failures caused by leakage, or situations where compensation equipment is not in operation. When a problem occurs, directly activate the pressure explosion-proof safety device to open the circuit of the capacitor. The perfect seal creates a vacuum state inside the capacitor, with a pressure of -0.3 Pa and no air.
The tuned self-healing capacitor -HRDQ-TC also has significant advantages in terms of volume and installation. Its volume is only two-thirds or even smaller than that of the old products, and its compensation capacity can also meet the appropriate standards. Different installation methods can be designed according to different schemes, which is both simple and convenient.
The internal structure of the tuned self-healing capacitor has a strong heat resistance and heat conduction effect. It will not explode due to overvoltage, making the operation of power equipment highly stable and eliminating the worry of frequent capacitor replacement and other troublesome issues.