DUTY CYCLES
Models up to and including 230TE are
covered by Reg’s EN 50060 and EN
50199, where the Duty Cycle is
expressed as a number of electrodes
that may be burned continuously in
a given time.
Referring to the table opposite,
n
c
indicates the number of
electrodes that may be burned
before the thermal cutout will
operate at a specified welding
current.
Example 1. 230TE Data Plate
Example 2. 260TE Data Plate
Models 260TE onwards are
covered by regulations EN
60974-1 and EN 50199, where
the Duty Cycle (X) is expressed
as a percentage of time the
machine may be used in a
given period for a specified
welding current.
i.e. using the example above:
.......... using 2.5mm dia rods, 34 may be burned continuously at 80 A welding current
or ....... using 4.0mm dia rods, 8.5 may be burned continuously at a 160A welding current
n
h
...... indicates the max. no. of electrodes that may be burned once the
overload has operated but has cooled sufficiently for it to begin operating
again..the machine is said to be in a ‘hot state’.
E/h
indicates the max. no. of electrodes of a given size that may be burned
per hour
i.e. using the example above:
When welding at 160 Amps the machine may be used for 6 minutes (60%) in any
10 minute period, or, the machine may be used continuously, (100%) when welding
at 125 Amps
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