Fronius TransSteel 2700c, Operating Instructions Manual

Page: 48 / 120

Generator-powered operation
Generator-
powered opera-
tion The power source is generator-compatible.
The maximum apparent power S
1max
of the power source must be known in order to
select the correct generator output.
The maximum apparent power S
1max
of the power source is calculated as follows:
3-phase devices: S
1max
= I
1max
x U
1
x √3
Single-phase devices: S
1max
= I
1max
x U
1
See device rating plate or technical data for I
1max
and U
1
values
The generator apparent power S
GEN
needed is calculated using the following rule of
thumb:
S
GEN
= S
1max
x 1.35
A smaller generator may be used when not welding at full power.
IMPORTANT! The generator apparent power S
GEN
must always be higher than the max-
imum apparent power S
1max
of the power source.
When using single-phase devices with a 3-phase generator, note that the specified gen-
erator apparent power is often only available as a whole across all three phases of the
generator. If necessary, obtain further information on the single-phase power of the gen-
erator from the generator manufacturer.
NOTE!
The voltage delivered by the generator must never exceed the upper or lower lim-
its of the mains voltage tolerance range.
Details of the mains voltage tolerance can be found in the "Technical data" section.
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