Product Usage

The series reactor, which passes AC power, is connected in series with the power factor compensation capacitor to form series resonance for the steady-state harmonics (5th, 7th, 11th, and 13th). Usually there are reactors with a reactance rate of 4.5~6%. For the 5th harmonic, the reactance rate is usually 4.5%, which is a high inductance value reactor. For the 3rd harmonic, the reactance rate is usually 12~13%. The rate of 26~27% is a very high inductance reactor.

When the series reactor is connected, the capacitor voltage increase coefficient - K=1 d 1 such as K= 6% 1.06 10.06 1≈ -d = that is, the operating voltage increases by 6%, and the operating current is also about 6%. Operational experience holds that when the capacity of capacitors equipped with series reactors accounts for 2/3 or more, harmonic resonance will not occur, which can effectively absorb grid harmonics, improve the voltage waveform of the system, improve the power factor of the system, and can effectively absorb the harmonics of the grid. Effectively suppress closing inrush current and operating overvoltage, and effectively protect capacitors.

Structural features

★The reactor is divided into two types: three-phase and single-phase, both of which are iron core dry type.

The iron core is made of imported cold-rolled oriented silicon steel sheet with high quality and low loss. The core column is divided into uniform small sections by multiple air gaps. The air gaps are separated by epoxy laminated glass cloth plates to ensure that the reactance air gap does not change during operation. .

★The coils are made of grade H or grade C enamelled flat copper wires, which are closely arranged and evenly arranged. The outer surface is not covered with an insulating layer, which has excellent aesthetics and good heat dissipation performance.

★The coil and the iron core of the reactor are assembled into one body and go through the process of pre-baking→vacuum dipping→heat-baking and curing. The H-level dipping varnish is used to firmly combine the coil and the iron core of the reactor. The noise during operation is reduced, and it has a very high heat resistance level to ensure that the reactor can operate safely and noiselessly at high temperatures.

★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 a low temperature rise, ensuring a better filtering effect.

★Exposed parts are treated with anti-corrosion treatment, and the lead-out terminals are cold-pressed copper tube terminals.

★Compared with domestic similar products, this reactor has the advantages of small size, light weight and beautiful appearance, which can be compared with well-known foreign brands.

Use environmental conditions

★The altitude does not exceed 2000 meters.

★The operating ambient temperature is -25℃～+45℃, and the relative humidity does not exceed 90%.

★There is no harmful gas around, no flammable and explosive materials.

★The surrounding environment should have good ventilation conditions. If it is installed in the cabinet, ventilation equipment should be installed.

Performance parameters

★Can be used for 400V, 660V system.

★Types of reactance rate: 1%, 6%, 12%

★The rated insulation level is 3kV/min.

★The temperature rise limit of each part of the reactor: the iron core does not exceed 85K, and the temperature rise of the electric coil does not exceed 95K.

★The noise of the reactor is not more than 45dB

★The reactor can run for a long time under the power frequency plus the harmonic current not more than 1.35 times the rated current.

★Reactance value linearity: the ratio of the reactance value at 1.8 times the rated current to the reactance value at the rated current is not less than 0.95.

★The difference between any two-phase reactance values of the three-phase reactor is not more than ±3%.

★Temperature resistance class H (180℃) or above.

Series Reactor Parameters and Dimensions

CKDG type, 230V, single phase, XL/XC=6%, matching capacitor voltage: 250V

☆Note: Reactors with other voltage levels, different capacities and different reactance rates can be manufactured according to user requirements.

CKDG type, 230V, single phase, XL/XC=12%, matching capacitor voltage: 280V