Features

• Select thyristors with low on-state threshold voltage: thereby reducing power consumption and improving rectification efficiency. According to the loss calculation of the rectifier cabinet, it can be seen that the loss of thyristors accounts for a large proportion of the total loss of the rectifier cabinet, and the on-state threshold voltage has a great influence on the loss of thyristors. Therefore, try to select thyristors with low on-state threshold voltage and stable and reliable performance.
• Minimize the number of parallel elements in the rectifier bridge arm: Due to the inconsistent characteristics of thyristors, the on-state threshold voltage of each thyristor cannot be exactly the same, which causes the conductive imbalance between the parallel elements of the rectifier bridge arm. The more parallel elements, the greater the conductive imbalance. Therefore, try to select thyristors with large forward average current, reduce the number of parallel elements in the rectifier bridge arm, and improve the current sharing coefficient of the rectifier bridge arm.
• Use current-sharing reactors for forced current sharing: Between the two thyristors in the same bridge arm, a low-power current-sharing reactor developed by our company is added for forced current sharing. The current-sharing coefficient is as high as 0.96 or above (when the current-sharing reactor is not used, the current-sharing coefficient is 0.85~0.88), which improves the rectification efficiency.
• Non-ferrous metal electrolysis, such as copper, zinc and aluminum electrolytic.

Description

All new structure rectifier cabinet, not only has the advantages of non-co-phase inverse parallel structure rectifier cabinet, but also has some new technical features, this structure adapts to the This structure adapts to the new requirements of rectifier device in electrolytic aluminum industry (high voltage level of series), and also makes up for the shortage of some traditional vertical structure (same phase inverse parallel structure). Its safety factor The safety coefficient is much higher than the same phase inverse parallel connection, and the failure rate is low and maintenance is convenient. The positive and negative rectifier groups are staggered in front and back, completely separated by insulating materials, forming two completely independent units. Completely independent unit, will not produce positive and negative arcing phenomenon. Two bridge arms of the same polarity of the same phase are fixed to the same element row by means of clamp installation, forming two The bridge arms are combined, thus reducing the number of rectifier arms from 12 to 6, and using spring steel plates and steel plates respectively, which are symmetrically pressed and installed, so that the components flow evenly. Mounting The screw of the components is a special insulated composite screw, which isolates the magnetic path of the components crimped; the skeleton of the cabinet shell is assembled with special aluminum profiles, with a more novel and beautiful structure, and the magnetic isolation effect is greatly improved. The magnetic effect is greatly improved, avoiding the heating of the shell.

The KES series widely used in electroplating, electrolysis, electrochemistry, oxidation, electrophoresis, smelting, electrocasting, communication and other fields, mainly aluminum, magnesium, lead, zinc, copper, manganese, bismuth, nickel and other non-ferrous metal electrolysis; Salt water, potassium salt electrolytic caustic soda, potassium alkali, sodium; Potassium chloride electrolysis to produce potassium chlorate, potassium perchlorate; Wire heating, silicon carbide heating, carbon tube furnace, graphitization furnace, melting furnace and other heating, electrolytic water hydrogen production and other large current fields.

Technical Parameters

Optional Models

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