CKSG-Series low voltage reactor

Main purpose and scope of application
This series of low-voltage series reactors are used in low-voltage reactive power compensation devices and are connected in series with capacitors. When there are a large number of harmonic sources such as rectifiers and converters in the low-voltage power grid, the high-order harmonics produced by them will be serious Endanger the safe operation of the main transformer and other electrical equipment. After the reactor is connected in series with the capacitor, it can effectively suppress the harmonic amplification, improve the voltage waveform of the system, increase the power factor of the system, and effectively suppress the closing inrush current and operating overvoltage, effectively protecting the capacitor.

Model and meaning

Description: reactor capacity = capacitor capacity x reactance rate

Working conditions
1. Altitude: ≤2000m;
2. Ambient temperature: -25℃-+45℃, relative humidity ≤90%;
3. No harmful gases around, no flammable and explosive materials;
4. The surrounding environment should be good Ventilation conditions;

Structural features
1. The reactor is divided into three-phase, split-phase and single-phase, all of which are iron core dry;
2. The iron core is made of high-quality low-loss cold-rolled oriented silicon steel sheet, and the core column is divided evenly by multiple air gaps In the small section, the air gap is separated by epoxy laminated glass cloth board to ensure that the reactance air gap does not change during operation;
3. The coil is wound with H-class or C-class enameled aluminum or copper wire, and the arrangement is tight and uniform , Has excellent heat dissipation performance;
4. The coil and iron core of the reactor are assembled into one body and go through the process of pre-baking-vacuum dipping-heat curing. The H-level impregnating paint is used to make the coil and iron of the reactor The cores are firmly combined together, which not only greatly reduces the noise during operation, but also has a very high heat resistance level;
5. The fasteners of the core column of the reactor are made of non-magnetic materials to ensure that the reactor has a high quality factor And low temperature rise;
6. The exposed parts are all treated with anti-corrosion treatment, and the lead-out terminals are tinned copper tube terminals.

Main technical parameters
1. Can be used in 380V, 660V and other systems;
2. Types of reactance rate: 1%, 6%, 7%, 12%, 13%, 14%, etc.;
3. Rated insulation level 3kV/min;
4. The temperature rise limit of each part of the reactor: the iron core does not exceed 85K, and the coil temperature rise does not exceed 95K;
5. The noise of the reactor is not more than 50dB;
6. The reactor can add harmonic current to the power frequency and not more than 1.35 times the rated current Under long-term operation;
7. Linearity of reactance value: the ratio of reactance value under 1.8 times rated current to reactance value under rated current is not less than 0.95;
8. The difference between any two-phase reactance value of three-phase reactor is not more than ±3%;
9. Temperature resistance class H (180℃) or higher.

Specification model (three-phase common compensation reactor)
380V system, the main specification with a reactance rate of 6% (Note: the reactor voltage and capacitor voltage must be the same, 450V, 480V, 525V or higher can be selected)

380V system, the main specification with a reactance rate of 7% (Note: the reactor voltage and capacitor voltage must be the same, you can choose 450V, 480V, 525V or higher)

380V system, the main specification with a reactance rate of 12% (Note: the reactor voltage and capacitor voltage must be the same, you can choose 480V, 525V or higher)

Three-phase sub-compensation reactor
380V system, reactance rate is 6%, three-phase sub-compensation reactance, with 0.25kV capacitor specifications as shown in the table below (Note: reactor and capacitor voltage must be consistent, 0.28YN, 0.3YN grade can be selected) .

Single-phase reactor
380V system, single-phase reactor specifications with a reactance rate of 6% (Note: The voltage of the reactor and the capacitor are the same, and the 0.25, 0.28, and 0.3 grades can be selected).

Three-phase total compensation and three-phase separate compensation reactor size

Single-phase reactor size

Ordering instructions
1. Series reactors do not filter out harmonics, but suppress the amplification of system harmonic currents. Therefore, it is not recommended to use series reactors when the system harmonic distortion rate is very serious. Instead, use harmonic control devices. ;
2, selecting the reactance of the harmonic must be based on system status, inhibiting 5 and above harmonic amplification selecting the reactance of 6 to 7%, 3 or more suppressed harmonic reactance selectively amplifying rate 12-14 %;
3. For 660V system, the reactance ratio is 6-7%, and the capacitor voltage reference is 750V or higher;
4. The voltage selection of reactor and capacitor; the higher the voltage level, the more reliable the use, but the output capacity will be reduced accordingly Small;
5. The capacity and reactance rate of the above specifications are not exhaustively listed, and the capacity and parameters of other specifications can be calculated in detail;
6. The filter reactor is customized according to the specific parameters of the user