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reactor

Starting reactor

QKSc

Starting reactor

When an AC asynchronous motor starts up under rated voltage, the initial starting current is very large, often many times (generally 5-7 times) the rated current. To reduce the starting current and avoid affecting the power grid, the AC asynchronous motor is usually started by reducing the voltage. Common voltage reduction methods include using reactors or autotransformers. The starting process of the AC motor is very short (generally a few seconds to two minutes). After starting, the reactor or autotransformer used for reduced-voltage starting is removed. This product is designed according to the starting characteristics of high-voltage asynchronous motors and generally matches motor power of 220-1400kW.

high and low voltage series reactor

CKSC

high and low voltage series reactor

Series reactors are mainly used in 0.4～35kV power systems and are connected in series with high-voltage capacitor banks. They can effectively suppress and absorb high-order harmonics, limit inrush current and switching surges, protect capacitors, improve power quality, and ensure the safe operation of the power grid.

Grounding transformer

DKSC

Grounding transformer

The function of a grounding transformer is to provide a neutral point when the system is connected in a delta (△) or Y configuration where the neutral point cannot be brought out. This neutral point is used to connect an arc suppression coil or resistor. This type of transformer uses a Z-connection (or zigzag connection). The difference from an ordinary transformer is that each phase winding is divided into two groups and wound in opposite directions on the same magnetic pole. The advantage of this connection is that the zero-sequence flux can flow along the magnetic pole, while in an ordinary transformer, the zero-sequence flux flows along the leakage magnetic path. Therefore, the zero-sequence impedance of a Z-type grounding transformer is very small (around 10Ω), while that of an ordinary transformer is much larger.

Filter air core reactor

lKGKl

Filter air core reactor

The filter reactor and filter capacitor are connected in series to form a resonant circuit, which resonates at a specified frequency point to filter out specified high-order harmonics. It can also achieve reactive power compensation for the power system and limit the inrush current when the capacitor bank is connected to the grid. Dimensions can be customized according to user requirements.

current limiting air core reactor

XKGKl

current limiting air core reactor

Adding system impedance to the system lines limits the short-circuit current when a system fault occurs, reducing the fault current to an allowable value. Dimensions can be customized according to user requirements.

Shunt air core reactor

BKGKl

Shunt air core reactor

Generally connected between the end of an extra-high voltage transmission line and the ground, it acts as a reactive power compensator. Connected in parallel to the power grid, it is used to compensate for the capacitive current of the reactor. Dimensions can be customized according to user requirements.

Series air core reactor

CKGKl

Series air core reactor

Dry-type air-core series reactors are a new type of reactor using new processes, new materials, and new technologies. In parallel capacitor compensation devices, they are connected in series with parallel capacitors to suppress harmonic voltage amplification, reduce system voltage waveform distortion, and limit the inrush current when the capacitor circuit is switched on. Dimensions can be customized according to user requirements.

Filter Reactor

LKSG

Filter Reactor

Filtering reactors are widely used in low-voltage filter cabinets, connected in series with filter capacitors, tuned to a specific resonant frequency to absorb harmonic currents of the corresponding frequency in the power grid. The series connection of filtering reactors and capacitors not only effectively absorbs power grid harmonics but also improves the power factor of the system, playing a significant role in the safe operation of the system.

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