High-efficiency Switch Welder SIC

High efficiency switch welder is specially designed for straight seam welding of the steel tube. It is current type parallel step up resonance circuit composed by transistor inverter of module power unit by SiC, DSEI60-06A fast recovery, rectifier diodes, large power IGBT and such power components, tank circuit capacitance C and the inductive coil L. This circuit adapts well to low load impedance of H.F welding. No output transformer needed. Thus achieves the high efficiency and the whole machine reliability.

SIC High-efficiency switch welder contact type consists of the following components:

1.The Inverter Cabinet

The inverter cabinet is mainly composed of power board group, parallel resonant slot circuit and inverter trigger board.

2.Central control unit

The control of DC motor, high-efficiency switch all-in-one machine and cooler on the welding pipe production line is concentrated in the central control board for the convenience of overall control. The display screen is established to show DC current, DC voltage, armature voltage, armature current, excitation voltage and excitation current indication and welder status.

Installed with LCD, power and speed adjust module; indicate the output current and voltage of the DC power unit; armature voltage and current, excitation voltage and current of the DC speed adjust unit. The pipe line can be completely controlled by the central control unit.

3.Water-water heat exchange system

Composition：Plate heat exchanger, water tank, pump and electrical control part.

Working principle: The internal cooling is called inner water (distilled water), and the external cooling is called outer water (ordinary water). External and inner water exchange through the plate heat exchanger to reduce the temperature of the inner water. Thus, the equipment inside is cooled.

Features:

A. Seal circulation, outer water (normal) cools down the inner water (distilled water), no scaling.

B. High efficiency of heat radiation, low cost.

C. Reservoir is used for outer water. Comparing to air-water heat exchanger, it covers les area.

D. Long operation life.

4.Three dimension adjusting bracket

Three dimension adjusting bracket can conveniently adjust the welding machine up and down, left and right, forward and backward. It makes the mechanical and electrical cooperation more closely and improves the efficiency after changing the steel pipe specification.

5.Full digital DC speed adjust unit

The core part uses the British Europe 591P Series original controller (the power is larger than the 132KW/440V, suggest to choose the European Land expansion mode). It has the overcurrent, the speed feedback fault, the excitation fault, the power failure, the overspeed, the electric motor overheat, the plugging, the over-voltage and such protection function.

Features: Easy to operate, just input the motor parameter to controller storage.

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