-
HYXHX series 10kv Arc Suppression Cabinet
In my country’s 3~35KV power supply system, most of them are neutral point ungrounded systems. According to national regulations, when a single-phase grounding occurs, the system is allowed to run with a fault for 2 hours, which greatly reduces the operating cost and improves the reliability of the power supply system. However, due to the gradual increase in the power supply capacity of the system, the power supply mode is The overhead line is gradually transformed into a cable line, and the capacitance current of the system to the ground will become very large. When the system is single-phase grounded, the arc formed by the excessive capacitive current is not easy to extinguish, and it is very likely to evolve into intermittent arc grounding. At this time, the arc grounding overvoltage and the ferromagnetic resonance overvoltage excited by it will be It seriously threatens the safe operation of the power grid. Among them, the single-phase arc-ground overvoltage is the most serious, and the overvoltage level of the non-fault phase can reach 3 to 3.5 times the normal operating phase voltage. If such a high overvoltage acts on the power grid for several hours, it will inevitably damage the insulation of electrical equipment. After several times of cumulative damage to the insulation of electrical equipment, a weak point of insulation will be formed, which will cause an accident of ground insulation breakdown and short circuit between phases, and at the same time cause insulation breakdown of electrical equipment (especially the insulation breakdown of the motor) ), the cable blasting phenomenon, the saturation of the voltage transformer stimulates the ferromagnetic resonance body to burn down, and the explosion of the arrester and other accidents.
-
HYSQ1 series 10kv Soft Starter Cabinet
The complete HYSQ1 series high-voltage solid-state soft starter is a standard motor starting and protection device, which is used to control and protect high-voltage AC motors. The standard HYSQ1 product is mainly composed of the following components: high-voltage thyristor module, thyristor protection components, optical fiber Trigger components, vacuum switch components, signal acquisition and protection components, system control and display components.
-
Sine wave reactor
Converts the motor’s PWM output signal to a smooth sine wave with low residual ripple voltage, preventing damage to the motor’s winding insulation. Reduce the phenomenon of resonance caused by distributed capacitance and distributed inductance due to the length of the cable, eliminate the motor overvoltage caused by high dv/dt, eliminate the premature damage of the motor caused by eddy current loss, and the filter reduces the audible noise of the motor.
-
HYSVC series high voltage dynamic reactive power compensation filter device
Electric arc furnaces, high-power rolling mills, hoists, electric locomotives, wind farms and other loads will have a series of adverse effects on the grid when they are connected to the grid due to their non-linearity and impact.
-
HYTBB series high voltage reactive power compensation device – outdoor frame type
Product Introduction The device is mainly used in 6kV 10kV 24kV 35kV three-phase power system to adjust the balance network voltage to improve power factor, reduce loss and improve power supply quality.
-
HYFC-ZP series intermediate frequency furnace passive filter energy saving compensation device
The intermediate frequency furnace is a nonlinear load. It injects harmonic current into the grid during operation, and generates harmonic voltage on the impedance of the grid, resulting in voltage distortion of the grid, affecting the quality of power supply and the safety of equipment operation.
-
HYYSQ series high voltage motor water resistance starter cabinet
Liquid resistance starter, low-voltage motor liquid starter cabinet, integrated starter cabinet, high-voltage slip ring motor fluid.
Starter cabinet, liquid rheostat starter, high-pressure liquid resistance soft starter, high-voltage squirrel cage liquid rheostat starter, liquid resistance cabinet starter, high-pressure liquid resistance soft starter cabinet, high-pressure liquid resistance cabinet, liquid resistance cabinet, water resistance cabinet , Starter cabinets, Yueqing liquid resistance cabinets, Zhejiang liquid resistance cabinets, high pressure cage liquid resistance cabinets, liquid resistance starting cabinet control cabinets, water resistance.
-
HYAPF series cabinet active filter
Fundamental
The active power filter is connected to the power grid in parallel, and the voltage and current of the compensation object are detected in real time, calculated by the command current operation unit, and the lower module of the IGB is driven by wide-band pulse modulation signal conversion technology. Input the current with opposite phase and equal magnitude to the harmonic current of the grid to the grid, and the two harmonic currents just cancel each other out, so as to achieve the functions of filtering harmonics and dynamically compensating for reactive power, and obtaining the desired power supply current.
-
Output reactor
Used for smooth filtering, reducing transient voltage dv/dt, and extending motor life. It can reduce motor noise and reduce eddy current loss. Leakage current caused by low-voltage output high-order harmonics. Protect the power switching devices inside the inverter.
-
Input reactor
Line reactors are current limiting devices used on the input side of the drive to protect the AC drive from transient overvoltage. It has the functions of reducing surge and peak current, improving real power factor, suppressing grid harmonics, and improving input current waveform.
-
CKSC high voltage iron core series reactor
CKSC type iron core high-voltage reactor is mainly used in 6KV~10LV power system in series with high-voltage capacitor bank, which can effectively suppress and absorb high-order harmonics, limit closing inrush current and operating overvoltage, protect capacitor bank, and improve system voltage waveform , improve the grid power factor.
-
smart capacitor
The intelligent integrated power capacitor compensation device (smart capacitor) is an independent and complete intelligent compensation composed of an intelligent measurement and control unit, a zero-switching switch, an intelligent protection unit, two (type) or one (Y-type) low-voltage self-healing power capacitors The unit replaces the automatic reactive power compensation device assembled by intelligent reactive power controller, fuse (or micro-break), thyristor composite switch (or contactor), thermal relay, indicator light, and low-voltage power capacitor.