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Medium Frequency Welding Transformer with Welding Diode
Medium Frequency Welding Transformer with Welding Diode Medium Frequency Welding Transformer with Welding Diode Medium Frequency Welding Transformer with Welding Diode Medium Frequency Welding Transformer with Welding Diode Medium Frequency Welding Transformer with Welding Diode

Medium Frequency Welding Transformer with Welding Diode

Product ID : Welding Transformer with Welding Diode
Product Attributes :

For all kinds of intermediate frequency, power frequency resistance welding machine.

Such as automobile welding clamp,seam welding machine, mesh welding machine and so on.

Product Description

Resistance MF welding transformers

 

Application 

 

1) Spot Welder 2) SEAM Welder 3) Projection Welder 4) High Frequency Induction Heating

 

For all kinds of intermediate frequency, power frequency 

resistance welding machine.Such as automobile welding clamp,

 

seam welding machine, mesh welding machine and so on.

 

 

Brief introduction 

 

 

Medium-frequency (MF) transformers are a result of recent advances in resistance welding technology. 

They are powered by a transistor inverter, supplying square wave AC 500 V @ 1000 Hz which is converted 

by the MF transformer to a low voltage high current AC. This low voltage AC current is rectified to DC by 

a diode block built into the transformer.The higher operating frequency of an MF system allows efficient 

energy conversion using a smaller and lighter transformer.Other benefits with MF transformers used in 

portable and robotic welding guns are:The reactance of the welding loop only limits the upslope and down

slope of the welding current, while the peak welding current in limited only by the welding loop’s resistance. 

The net result is again smaller transformer, especially when welding with large throat, high-impedance guns.

MF welding is less demanding on the plant power system. The MF inverter draws balanced line current from 

all 3 phases and operates at a high power factor (0.9).With MF transformers the peak welding current almost 

equals its RMS value, which helps to obtain quality welds with no splash and constantstrength even at lower 

pressure.The high frequency permits much faster – 1000 times per second - process control, which again results

in better weld quality.

 

Technology selection table

 

型号 / TYPE Unit MF6160 MF170-3G MF130 MF170 MF220 MF225

初级额定电压 /primary nominal voltage

v 500 500 500 500 500 500
频率 / frequency Hz 1000 1000 1000 1000 1000 1000
负载持续率为 20%的标称功率/ nominal power at 20%ED kVA 170 170 130 170 220 350
负载持续率为 50%的标称功率/ nominal power at 50%ED


kVA 105 105 85 105 150 225
负载持续率为 100%的标称功率/ nominal power at 100%ED


kVA 75 75 58 75 117 170
空载电压/ secondary  voltage V 9 9 9 9 13 13

持续直流电流 / permanent DC current 100%   

A 8500 8500 6500 8500 9000 13000
短路电流/ short-circuit current KA 38 38 32 38 45 55
变压比 / turns ratio N1/N2 55:1 55:1 55:1 55:1 38:1 38:1
重量 / weight kg 20 20 15 20 25 40
温度开关 / temperature switch   2 x 150 °C, 1 x 70 °C  温度开关 (热保) /Temperature switch 

绝缘等级 /insulation class   F(155°C)
测流线圈/ eddy current testing   150mV/KA±3%  150mV/KA±3%  150mV/KA±3%  150mV/KA ±3% - 150mV/KA±3% 
尺寸/ size mm 171.5×127×295 160*130*256 150*106*276+82 160X125X262 160×125×318 171.5*151*450
冷却水流量/ cooling water quant. Q              Tmax. 30℃ I/ min 8 8 8 8 12 12
压差 / pressure drop p (Q=6l / min ) Mpa <0.2 <0.2 <0.2 160X125X262 <0.1 <0.1
注:电极输出方式可以按需要调整   内置()个整流管   2 2 2 2 4 4

 

Load endurance chart   

Type    
MF6160

负载曲线 

Load diagram

尺寸图

Drawings

MF170-3G

负载曲线 

Load diagram

尺寸图

Drawings

MF130

负载曲线 

Load diagram

尺寸图

Drawings

MF170

负载曲线 

Load diagram

尺寸图

Drawings

MF220

负载曲线 

Load diagram

尺寸图

Drawings

MF225

负载曲线 

Load diagram

尺寸图

Drawings

注:

整流器额定值:负载持续率%基于从一次焊接开始到下一次焊接开始的最短时间 

                        开机时间/(开机时间+关机时间)

变压器额定值:负载持续率%为一分钟内的总开机时间

NOTE:

If the secondary connection and secondary voltage need to be adjusted , please contact Manufacture  

Duty factor diodes:from the beginning of one welding time to the beginning of the next welding  (Spot to Spot)

Duty factor transformer:all welding time within 60s

 

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