ESAB LAW 400, Service Manual

Page: 37 / 66

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TECHNICAL DATA
LAW 410/410W
LAW 400/400W
400 -- 415 V
LAW 410/410W
LAW 400/400W
230 -- 500 V
LAW 510/510W
LAW 500/500W
400 -- 415 V
LAW 510/510W
LAW 500/500W
230 -- 500 V
Mains voltage
400--415V 3
~
50Hz
230/400--415/500V
3
~
50Hz
230/440--460V
3
~
60Hz
400--415V 3
~
50Hz
230/400--415/500V
3
~
50Hz
230/440--460V
3
~
60Hz
Load capacity
At 45% duty cycle 400A/34V 400A/34V
At 60% duty cycle 350A/32V 350A/32V 500A/39V 500A/39V
At 80% duty cycle 450A/37V 435A/36V
At 100% duty cycle 280A/28V 280A/28V 400A/34V 390A/33.5V
Operating range 60A/17V--400A/34V 60A/17V--400A/34V 60A/17V--500A/39V 60A/17V--500A/39V
Open--circuit voltage 53--58V 53--58V 53--60V 53--60V
Open--circuit power 590/790W 640/840W 670/870W 720/920W
Power factor 0.86 0.84 0.90 0.90
Efficiency 0.74 0.76 0.78 0.78
Control voltage 42V 50/60Hz 42V 50/60Hz 42V 50/60Hz 42V 50/60Hz
Enclosure class IP 23 IP 23 IP 23 IP23
Electrical protection class
Weight 200/214kg 201/215kg 225/239kg 227/241kg
Dimensions l x b x h 800x640x835mm 800x640x835mm 800x640x835mm 800x640x835mm
These welding power units fulfil the requirements of IEC 974--1
The
S
symbol indicates that the power units have been designed for use in areas of elevated electrical danger.
Units of Class IP 23 are intended for indoor and outdoor use.
PRIMARY CURRENT, MAINS FUSE RATING AND MAINS CABLE CROSS--SECTIONAL AREA
LAW 400/410
* 400--415V
400--415V
50Hz
** 230--500V
230V
50Hz
** 230--500V
400--415V
50Hz
** 230--500V
500V
50Hz
** 230--500V
230V
60Hz
** 230--500V
440--460V
60Hz
Primary current at:
45% duty cycle 31A 51A 31A 25A 51A 30A
60% duty cycle 28A 47A 28A 22A 45A 27A
100% duty cycle 23A 39A 23A 19A 37A 22A
Cable CSA mm
2
4x4 4x10 4x4 4x4 4x10 4x4
Fuse rating, slow blow 25A 35A 25A 20A 35A 20A
LAW 500/510
* 400--415V
400--415V
50Hz
** 230--500V
230V
50Hz
** 230--500V
400--415V
50Hz
** 230--500V
500V
50Hz
** 230--500V
230V
60Hz
** 230--500V
440--460V
60Hz
Primary current at:
60% duty cycle 42A 69A 42A 31A 69A 42A
80% duty cycle 38A 63A 38A 29A 61A 37A
100% duty cycle 34A 59A 34A 27A 56A 33A
Cable CSA mm
2
4x6 4x16 4x6 4x6 4x16 4x6
Fuse rating, slow blow 35A 63A 35A 35A 50A 25A
* = Power unit suitable only for a single supply voltage, 400--415V 50Hz.
** = Power unit suitable for various supply voltages.