Linde BOC Raptor CUT 30C, Operating Manual

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11.0 Plasma Cutting Components
11.1 Plasma Cutting Power Sources
The plasma arc cutting power source changes the
relatively high voltage, low amperage primary power
into low voltage, high amperage secondary power
suitable for plasma cutting.
The size of the power source depends on the cutting
amperage it is expected to deliver. Cutting of heavy
section materials requires more amperage than does
cutting of thinner sections.
11.2 Plasma Cutting Capacity
Rated Output (A) Cutting thickness (mm)
Steel
Stainless
Steel Aluminium
40A Single phase
10 9 4
60A Three phase
20 18 6
80A Three phase
25 22 8
100A Three phase
32 25 12
160A Three phase
50 35 20
11.3 Air Supply
The supply of air to the cutting process plays an
important role. The force of the air is used to blow
the molten material (created by the plasma arc) away
from the cut area thereby creating separation. Air
pressure and amperage are two variables that are
changed when increasing the cut thickness.
Compressed air from compressed air lines is often
contaminated with moisture and oil residue.
Contaminants such as these shorten the life of the
consumable torch parts, it is therefore recommended
that an inline filter drying system is fitted to all air
delivery lines.
When air is supplied from a portable air compressor
it is important to ensure that the compressor has
adequate pressure and airflow rate capacity.
Typical air supply requirements
Pressure
4.5–6 bar
Draw-off rate
150–200 L/min