Type 1: Arc suppression coil complete set Type 2: Neutral point grounding protection equipment Type 3: Small/low current earth-fault line selection device Type 4: Turning arc-suppression coil& grounding transformer complete set Type 5: Bias magnetic arc suppression coil& grounding transformer complete set Type 6: Adjustable capacity arc suppression coil& grounding transformer set Type 7: Phase-controlled arc suppression coil complete set Type 8: Arc extinguishing& harmonic elimination& overvoltage protection device Type 9: Small current grounding fault line selection device

Neutral point grounding protection equipment

Arc suppression coil complete set

Small/low current earth-fault line selection device

Arc suppression coil and grounding transformer complete device

Intelligent arc suppression coil grounding compensation device is mainly used in neutral point grounding through the arc suppression coil of 6kV,10kV,35kV power grids. It automatically tracks and compensates the grid capacitive current to keep it in the setting parameter range, eliminates grid system internal over-voltage and resonance over-voltage, it will automatically alarm when grounding fault occurs in the power grid, and has remote output interfaces to communicate with the host computer. This device is characterized by fast response speed, high accuracy, and solving the problem of crashes, etc. It is the best grounding electrical equipment for the vast of medium voltage distribution networks.

Other devices:

1.Turning arc-suppression coil& grounding transformer complete set

2.Bias magnetic arc suppression coil& grounding transformer complete set

3.Adjustable capacity arc suppression coil& grounding transformer complete set

4.Phase-controlled arc suppression coil complete set

5.Arc extinguishing& harmonic elimination and overvoltage protection device

6.Small current grounding fault line selection device

Turning arc-suppression coil& grounding transformer complete set

The turn-adjusting arc suppression coil is provided with a plurality of taps of the arc suppression coil, and the on-load adjustment switch is used to adjust the tap of the arc suppression coil to change the inductance value, so as to realize the output of the inductor current to the ground for the purpose of automatic tracking compensation.

Bias magnetic arc suppression coil& grounding transformer complete set

The bias magnetic arc extinguishing coil has an iron core magnetizing section arranged in its AC working coil. By changing the DC assisted magnetic flux on the magnetic circuit of the iron core magnetizing section, the AC equivalent permeability is adjusted to achieve the purpose of continuously adjustable inductance. Its DC excitation winding adopts reverse-serial connection to make the power frequency voltages induced on the entire winding cancel each other out. Through the closed-loop adjustment of the output current of the three-phase full-control rectifier circuit, the control of the excitation current of the arc suppression coil is realized. The core controller continuously monitors the neutral point displacement voltage and the arc suppression coil current to realize automatic tracking and detection of the capacitor current under normal operating conditions of the power grid, dynamic compensation under fault operating conditions, and automatic recovery after the fault disappears.

Adjustable capacity arc suppression coil& grounding transformer complete set

Adjustable capacity arc suppression coil body is composed of main winding and secondary winding. The secondary winding is connected to the capacitor adjustment cabinet. The 4 to 5 groups of vacuum contactors control the switching to the secondary adjust the capacitors. The inductive current of the arc suppression coil is adjusted by using the opposite phase of the capacitive current and the inductive current. When the secondary capacitors are all disconnected, the main winding has the smallest inductive reactance and the largest inductor current. After the secondary winding has capacitors connected, according to the principle of impedance conversion, it is equivalent to connecting the same power capacitors at both ends of the main winding, so that the inductor current is reduced. Therefore, the inductance of the main winding and the magnitude of the inductor current can be controlled by adjusting the capacity of the secondary capacitor.

Phase-controlled arc suppression coil complete set

The phase-controlled arc suppression coil uses advanced algorithms to select lines for high-voltage grounding lines. The line selection is accurate and fast. It is widely used in the distribution station of power supply industry, power plants, metallurgy, mining, coal, papermaking, petrochemical and other large factories and mining companies. It is suitable for the voltage level of 6~66KV. It is an ideal replacement product of the old arc suppression coil, and it is also the first choice of supporting products for the grounding compensation and line selection device of the new substation.

Arc extinguishing& harmonic elimination and overvoltage protection device

Arc-suppression& harmonic elimination and over-voltage protection devices can limit the phase-to-phase and phase-to-ground over-voltage of the neutral point ineffectively grounding system to the safe range of the power grid, it completely solve the threat of various over-voltages to the power grid, and improve the reliability  of safe power supply of the power grid.

Chongqing Enrich Engineering and Technology Co., Ltd

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