ESAB EMP 285ic 3ph - MAIN SUPPLY

INSTALLATION
5-5
5.4 MAIN SUPPLY
The supply voltage should be:
• For 1ph: 230 V AC ±10% or 120 V ±10%
• For 3ph: 460 V AC ±10% or 575 V ±10%
Too low supply voltage may cause poor welding performance. Too high supply voltage will
cause components to overheat and possibly fail. Contact the local electric utility for information
about the type of electrical service available, how proper connections should be made, and
inspection required.
The welding power source must be:
• Correctly installed, if necessary, by a qualified electrician.
• Correctly earthed (electrically) in accordance with local regulations.
• Connected to the correct size power and fuse as table below (Table 5-1, Table 5-2).
NOTE
Main supply requirements:
This equipment complies with IEC 61000-3-12 provided
that the short-circuit power is greater than or equal to
Sscmin at the interface point between the user’s supply
and the public system. It is the responsibility of the
installer or user of the equipment to ensure, by
consultation with the distribution network operator if
necessary, that the equipment is connected only to a
supply with a short-circuit power greater than or equal
to Sscmin.
NOTE
Use the welding power source in accordance with the
relevant national regulations.
.
CAUTION
Disconnect input power and secure employing ‘Lock-out’ / ‘Tagging’ procedures. Ensure
input power line disconnect switch is locked (Lock-out/Tagging) in the ‘Open’ position
BEFORE removing input power fuses. Connection/Disconnect should be carried out by
competent persons.