Variable Frequency Power Supply KGPS for Induction Heating

At Yinda we produce the KGPS Series Variable frequency power supply in the parallel circuit version for induction melting, holding and heating equipment. The product page states that the medium frequency power cabinet uses a rectifying series main circuit, with lower harmonic content and good flow characteristics. It also lists two patent technologies for the rectifier pulse circuit and describes the protection functions and the cabinet construction. In this article we describe the main circuit, the protection functions, the cabinet components, the applications and the points a buyer should confirm before an order.

Main Circuit of the KGPS Power Supply

The page states that the medium frequency power cabinet uses a rectifying series main circuit, which gives lower harmonic content and good flow characteristics. Two patent technologies are listed for the rectifier control: the double isolation electric rectifier controlled pulse extension circuit, patent number 201420280539.2, and the expansion of double isolation optical pulse rectifier circuit, patent number 201410232415.1. The control circuit is described as a fully integrated circuit with two further patents for an active high voltage electronic transformer, patent numbers 201420280467.1 and 201410232377 X. The buyer should confirm the input voltage, the rated power, the frequency and the load profile with the supplier, because the page explains the circuit and the protection but does not publish a full model table.

Protection Functions Listed on the Page

The page lists several protections. These include the lack of a main circuit phase and three-phase imbalance protection, rectifier bridge imbalance protection, low voltage protection of the power grid, current limiting and pressure limiting protection, over current protection at any time above the current setting, over voltage protection at any time above the voltage setting, low voltage protection of the control power supply, low frequency protection and a corresponding fault display. These functions are the basis for a safe power cabinet, but the settings should be checked against the furnace and the process. The buyer should ask for the protection setting list and the fault code table so that the operator can understand an alarm and respond correctly.

Cabinet Construction and Components

The page describes a cabinet that uses one main control board without other auxiliary boards, which makes it highly integrated and easier to change. Air flowing equipment should be added to the cabinet so that the door can be closed during work to protect against dust, and the cabinet temperature should match the design data. The power cupboard circuit breaker uses a vacuum circuit breaker from a well-known domestic manufacturer, which the page presents as a solution to the arc strike problem of an ordinary air circuit breaker. The power circulating water hose is carbon-free, with high temperature resistance and good bending. The intermediate frequency inductor is a pouring type inductor, and the internal link uses T2 copper plate with a sandblasted passivation. The buyer should confirm the cooling water quality, the flow and the temperature, because the power cabinet depends on the cooling circuit.

Applications and Buyer Checklist

The page presents the product as a power supply for medium-frequency induction furnaces, holding furnaces and high-power variable-frequency equipment for metal melting, holding and hot working. The buyer should confirm the furnace type, the rated power, the input voltage, the frequency, the cooling water condition and the control interface before the order. The buyer should also confirm the spare parts list, the commissioning support and the training for the operator. The page does not list a price, a minimum order quantity or a delivery lead time, so those points should be requested with a quotation. A factory test and a site commissioning check are the practical way to confirm the power output, the protection settings and the cooling before production starts.

Contact and Order Confirmation

The contact details shown on the page are email yd@ifmcn.cn and kdk@ifmcn.cn, and telephone or WhatsApp +86-0563-6998567. The company also lists medium-frequency induction furnaces, holding furnaces, IGBT power supplies, steel through-heating furnaces and other auxiliary equipment. A buyer who is building a melting or heating line can review the power supply together with the furnace and the auxiliary equipment on the same site. The final configuration, the drawings and the acceptance criteria should be written into the order confirmation.