Medium Frequency Transformer DC 1000Hz Mf170/130-9

• Customization: Available
• Cooling Way: Water Cooling
• Control: Semi-Automatic
• Model NO.: Transformer DC Unit 1000HZ
• Style: Vertical
• Welding Way: Seam Welding
• Type: Three-Phase Secondary Rectification Welder
• Quality: High Reliability
• Design: Standard
• Delivery Way: by Sea,by Air
• Cool: Water or Air
• Transport Package: Carton Box
• Specification: 400*300*300
• Trademark: SAILTON/STI
• Origin: China
• HS Code: 85413000
• Production Capacity: 50000 Sets/Year
• Package Size: 50.00cm * 40.00cm * 40.00cm
• Package Gross Weight: 25.000kg

Product Description

Medium Frequency Transformer DC Mf Welding Transformer mf 130/170-9

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

 

/ TYPE			Unit	MF6160	MF170-3G	MF130	MF170	MF220	MF225
/primary nominal voltage			v	500	500	500	500	500	500
/ frequency			Hz	1000	1000	1000	1000	1000	1000
20%/ nominal power at 20%ED			kVA	170	170	130	170	220	350
50%/ nominal power at 50%ED			kVA	105	105	85	105	150	225
100%/ nominal power at 100%ED			kVA	75	75	58	75	117	170
/ secondary  voltage			V	9	9	9	9	13	13
/ permanent DC current 100%			A	8500	8500	6500	8500	9000	13000
/ short-circuit current			KA	38	38	32	38	45	55
/ turns ratio			N1/N2	55:1	55:1	55:1	55:1	38:1	38:1
/ weight			kg	20	20	15	20	25	40
/ temperature switch				2 x 150 °C, 1 x 70 °C  () /Temperature switch
/insulation class				F(155°C)
/ eddy current testing				150mV/KA±3%	150mV/KA±3%	150mV/KA±3%	150mV/KA ±3%	-	150mV/KA±3%
/ size			mm	171.5×127×295	160*130*256	150*106*276+82	160X125X262	160×125×318	171.5*151*450
/ cooling water quant. Q              Tmax. 30ºC			I/ min	8	8	8	8	12	12
/ pressure drop p (Q=6l / min )			Mpa	<0.2	<0.2	<0.2	160X125X262	<0.1	<0.1
:   ()				2	2	2	2	4	4

Load endurance chart

MF6160	Load diagram
	Drawings
MF170-3G	Load diagram
	Drawings
MF130	Load diagram
	Drawings
MF170	Load diagram
	Drawings
MF220	Load diagram
	Drawings
MF225	Load diagram
	Drawings

 

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