Technical Characteristics - ESAB LAF 1250 BR Manual De Instrucciones

2) DESCRIPTION
Power Source LAF 1250 BR is a rectifying source with characteristic of Constant Tension specially
designed for submerged arc welding (SAW), tubular wire welding (FCAW) and MIG/MAG (GMAW)
automated.
LAF 1250 BR is used together with ESAB A2-A6 command Process Controller (PEH).
The source and the command are interconnected through a command cable which accompanies the A2-A6
control.The source is regulated by the PEH command.
The process is totally controlled by the PEH command through which the welding parameters are regulated.
The regulated parameters can be monitored during welding. For detailed information about PEH command
operation refer to respective Instruction Manual.
Power Source LAF 1250 BR has got forced ventilation and protection against components overheating. In
case internal temperature is over the limits described in the project, welding is interrupted and the orange
pilot lamp on the panel goes on and the fan keeps on working. When temperature goes back to normal
operation levels the lamp goes off and welding can be restarted.
Duty cicle is the relation between the time during which a welding machine can supply a certain maximum
welding current (charge time) and a reference time; according to international rules, reference time is 10
minutes.
LAF 1250 BR nominal duty cicle of 100% means that the machine can supply repeatedly its nominal
welding current (charge), with no need to be followed by a rest period (the machine does not supply welding
current) and without overheating the internal components.

3) TECHNICAL CHARACTERISTICS

TABLE 3.1
ABNT Class
Open circuit voltage (V)
Current/tension (A/V)
Nominal current (A)
Permitted load
Duty cicle (%)
Current (A)
Tension (V)
Power supply (V -Hz)
Apparent nominal power (KVA)
Thermal class
Enclosure class
Dimensions (W x L x H-mm)
Weight (kg)
16
LAF 1250 BR
I
17 - 53
MIG/MAG-> 60/17 -12 50/44
SUBMERGED -> 40/22 - 1250/44
1250
100
1250
44
220/380/440-50/60
75
H (180° C)
IP22
620 x 750 x 1450
490