Passive filter compensation device for HYFC-ZJ series rolling mill

Short Description:

The harmonics generated in cold rolling, hot rolling, aluminum oxidation, and electrophoresis production are very serious. Under a large number of harmonics, the cable (motor) insulation attenuates rapidly, the loss increases, the output efficiency of the motor decreases, and the capacity of the transformer decreases; when the input power is caused by the user When the waveform distortion caused by harmonics exceeds the national limit value, the electricity consumption rate increases and the power supply may be terminated. Therefore, no matter from the perspective of equipment, the impact on power supply, or the interests of users themselves, the harmonics of electricity consumption should be handled well and the power factor of electricity consumption should be improved.

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Product Detail

Product Tags

product description

equipment composition
●Dedicated 210V, 315V. 400 V, 600V. 900V, 1300V single-phase filter capacitor
●High quality filter reactor
●SCR switching unit device
●Dynamic compensation filter controller

Equipment introduction
Our company’s low-voltage filter dynamic reactive power compensation equipment is used in inductive loads with severe harmonics below 10KV (for example: DC rolling mill, spot welding machine, elevator, etc.) according to the nature of the load, select a single-tuned filter channel; Power grid harmonics make the voltage and current distortion rate meet the requirements of the international “GB/T-14549-93″, which can effectively improve the quality of power supply, reduce power loss, and improve the economic benefits of enterprises.
Products are widely used in industrial and mining enterprises, oil fields, ports, residential quarters and rural power grids. Use the controller to track the system load, automatically and reasonably switch, without the problems of switching oscillation and reactive power transfer, and maintain the system power factor in the best state. The switching mechanism can choose any one of contactor, thyristor or compound switch switching mode, which meets the requirements of different power grid environments for switching mechanisms.
National limits on harmonic content of public power grids – excerpted from GB/T 14549.

product model

form of compensation
●Low-voltage dynamic filter reactive power compensation has three forms: three-phase common compensation, three-phase separate compensation, and common compensation plus split compensation;
●According to the actual load situation, taking into account the compensation effect and cost, rationally select the compensation form, fully solve the contradiction between reactive power compensation and three-phase unbalance, three-phase compensation and cost, and optimize the user input cost;
●Three-phase co-compensation is adopted for the three-phase basic unbalanced system, which has good compensation effect and low cost;
●The three-phase compensation form is used in the system with serious three-phase unbalance, which can effectively solve the problem of over-compensation of one phase and under-compensation of the other phase in the three-phase unbalanced system, and the cost is relatively high;
●For systems with less serious three-phase unbalance, the compensation in the form of total compensation plus sub-compensation is adopted, which not only avoids the problem of over-compensation and under-compensation, but also has a relatively low cost;

Technical Parameters

●Using thyristor as switching switch to realize non-contact automatic switching of the filter, no closing inrush impact, no arc re-ignition, re-switching without discharge, continuous and frequent switching without affecting the performance of switches and capacitors Long life, fast response, ultra-low noise.
●Using dynamic compensation filter controller, dynamic compensation, response time ≤20ms.
●Over-current protection, overheating protection, while filtering out the 5th, 7th, 11th, 13th and other harmonics.
●The voltage total harmonic distortion rate THDu will drop below 5% of the national limit;
●The harmonic current injected into the public 10KV power grid is less than the allowable value of the national standard;
●Power factor COSφ> 0.92 (usually up to 0.95-0.99).

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