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About usKonstanz Electric Group Co., Ltd. is an industry leading enterprise integrating intelligent manufacturing and technology research and development of high and low voltage transmission and distribution equipment, power quality,
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ProductsRelying on imported technologies and raw materials, the company, under the brand of "KONSTANZ", wholeheartedly serves the national grid, metallurgical manufacturing, petrochemical industry, rail transit, ports, airports, new
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ServiceConstants Electric always adheres to the service concept of integrity and professionalism, and wholeheartedly provides users with high-quality lifelong service.
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NewsTo provide safe and reliable power distribution solutions for smart cities and smart factories, we are always committed to becoming "trusted electrical experts" around you.
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Contact usConstants Electric always adheres to the service concept of integrity and professionalism, and strives to provide high-quality lifelong service for users, and provide safe and reliable power distribution solutions for smart c
Low voltage intelligent capacitor
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KD-Z series intelligent low-voltage power capacitor is a new generation of reactive power compensation equipment for 0.4KV low-voltage power grid, which can save energy efficiently, reduce line loss, and improve power factor and power quality. It consists of intelligent measurement and control unit, synchronous switch circuit, line protection unit and low-voltage power capacitor. It replaces the conventional automatic reactive power compensation device composed of intelligent controller, fuse, composite switch or mechanical contactor, thermal relay, low-voltage power capacitor, indicator light and other loose parts connected by wires in the cabinet and on the cabinet surface It has changed the bulky and cumbersome structure mode of the traditional reactive power compensation device, so that the new generation of low-voltage reactive power compensation device has the characteristics of better compensation effect, smaller volume, lower power consumption, cheaper price, more cost saving, more flexible use, more convenient maintenance, longer service life, and higher reliability, which adapt to the higher requirements of modern power grid for reactive power compensation.
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KD-Z series intelligent low-voltage power capacitor is a new generation of reactive power compensation equipment for 0.4KV low-voltage power grid, which can save energy efficiently, reduce line loss, and improve power factor and power quality. It consists of intelligent measurement and control unit, synchronous switch circuit, line protection unit and low-voltage power capacitor. It replaces the conventional automatic reactive power compensation device composed of intelligent controller, fuse, composite switch or mechanical contactor, thermal relay, low-voltage power capacitor, indicator light and other loose parts connected by wires in the cabinet and on the cabinet surface It has changed the bulky and cumbersome structure mode of the traditional reactive power compensation device, so that the new generation of low-voltage reactive power compensation device has the characteristics of better compensation effect, smaller volume, lower power consumption, cheaper price, more cost saving, more flexible use, more convenient maintenance, longer service life, and higher reliability, which adapt to the higher requirements of modern power grid for reactive power compensation.
● Rated voltage level (kV): 0.23, 0.25, 0.4, 0.45, 0.48, 0.525;
● Rated capacity (KVAR): 5~40;
● Loss tangent (tan δ)： ≤0.1%(Un50Hz20°C);
● Interelectrode withstand voltage: 2.15Un5s, no permanent breakdown or flashover;
● Pole case withstand voltage: 2Un+2kV (3kV if lower than 3kV) for 10s, without breakdown or flashover;
● Maximum allowable voltage: 1. When IUn is applied, it shall not exceed 8h every 24h; 1.15Un, not more than 0.5h every 24h; 1.2Un, no more than 300s; Not more than 60s at 1.3Un;
● Maximum allowable current: the capacitor can operate for a long time under 1.3In; Considering the influence of overvoltage, positive capacitance deviation and harmonic, the transition current shall not exceed 1.35In;
● Discharge device: the voltage of capacitor drops to below 50V 180s after the power is cut off;
● Adopt synchronous switch, zero crossing switching, no inrush current; It can be controlled autonomously.
● The altitude shall not exceed 2000 meters (if it is more than 2000 meters, it shall be corrected according to the standard)
● Ambient temperature: - 40~+50C
● The installation site shall be free of violent mechanical vibration, harmful gas and steam, conductive and explosive dust
● The continuous operating voltage is 1.0Un, and the maximum long-term overvoltage does not exceed 1.1Un
● Steady state overcurrent (including harmonic current) shall not exceed 1.35In
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Model of intelligent capacitor
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Rated capacity/kvar
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LxWxH/mm |
| KD-Z0.45-5T | 5 | 340x72x225 |
| KD-Z0.45-10T | 10 | 340x72x225 |
| KD-Z0.45-15T | 15 | 340x72x275 |
| KD-Z0.45-20T | 20 | 340x72x325 |
| KD-Z0.45-25T | 25 | 340x72x325 |
| KD-Z0.45-30T | 30 | 340x72x325 |
| KD-Z0.45-40T | 40 | 340x72x355 |
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Model of intelligent capacitor
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Rated capacity/kvar
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LxWxH/mm |
| KD-Z0.25-5F | 5 | 340x72x225 |
| KD-Z0.25-10F | 10 | 340x72x275 |
| KD-Z0.45-15F | 15 | 340x72x325 |
| KD-Z0.45-20F | 20 | 340x72x355 |
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