General Information - Telwin PLASMA 30 Manual

- Avoid any "DIRECT CONT ACT" with NON-insulated parts
of the "CUTTING CIRCUIT". (1)
- Always wear protection clothing. Ex.:insulating gloves and
shoes.
- Keep protection wear clean and do not damage them.
- DO NOT use cables and torch, if the insulation is worn out
or if electric connections are loosened.
- DO NOT use the unit in damp rooms or in the rain.
- Switch off the machine during routine maintenance of the
torch, ex.: replacement of electrode and nozzle.
- Disconnect the machine from the outlet during installation
and operations of inspections and maintenance.
NOTE (1)
The electric circuit includes all conductors crossed by
cutting current.
IRRADIATION PRODUCED BY PLASMA ARC
MAY DAMAGE THE EYES AND CAUSE SKIN BURNS.
- Always protect the eyes with non-actinic glasses for iron
soldering set on masks or on graduation helmets: DIN 4-
10, depending on the cutting mode (close or distant
mode), and on the intensity of current.
- Wear protective clothing without exposing the skin to UV
rays produced by the arc.
- Make sure that everybody standing in proximity is
protected by the harmful effects of the arc.
SMOKE AND GAS MAY BE DANGEROUS TO
YOUR HEALTH.
- Ensure a proper change of air as well as the existence of
smoke suction devices in the area of the cutting arc. Ex.:
suction benches or at water level.
- Use individual respirators if ventilation is not enough to
intercept all smokes and gases.
- Do not cut material cleaned with chlorinated solvents or
near said solvents: vapors from the action of arc UV rays
may produce toxic gases.
- Avoid cutting on painted, galvanic coated surfaces or
parts dirty with oil or grease; clean the part thoroughly
before cutting it.
NOISE MAY DAMAGE HEARING.
- The level of noise produced by the cutting arc may exceed
85 dB (A).
- Check the level of INDIVIDUAL DAILY EXPOSURE to the
noise.
- Use proper means of individual protection in case the limit
is exceeded.
FIRE AND EXPLOSIONS MAY BE IGNITED BY
SPARKS AND HOT SLAGS.
- Do not cut on containers and pipes containing
inflammable products or liquid and gaseous fuels.
- Remove all inflammable material from the cutting area,
wastes included, ( rags, cartons, etc.) within a range of 10
meters.
All manuals and user guides at all-guides.com
- Make sure there are proper fire proof means in the cutting
area.

2. GENERAL INFORMATION

PLASMA ARC AND BASIC PRINCIPLES FOR THE
PERFORMANCE OF PLASMA CUTTING.
- Plasma is a gas that is heated to an extremely high
temperature and ionised so that it becomes a conductor of
electricity.
- This cutting procedure utilises the plasma to transfer the
electric arc to the metal workpiece, which is melted by the
heat and then separated.
- The torch uses compressed air from a single source, for
both the plasma and cooling and protective gas.
- The start of the cycle is determined by an arc, called the
pilot arc, which is struck between the mobile electrode ( -
ve polarity) and the torch nozzle ( +ve polarity ) due to the
short circuit between these two elements.
- When the torch is brought into direct contact with the
workpiece to be cut (connected to the +ve polarity of the
power source) the pilot arc is transferred between the
electrode and the workpiece itself thus striking a plasma
arc, also called cutting arc.
- The duration of the pilot arc is set in the factory at 2 sec; if
the transfer has not been made within this time, the cycle
is automatically stopped except for the cooling air which is
kept on.
- To recommence the cycle, the torch button must be
released and pressed again.
UNIT COMPOSITION.
The plasma cutting system includes:
- POWER SOURCE PLASMA 30
complete with:
- Mains cable 2.5 mt
- Kit of connectors for compressed air
- Work cable with clamp 5 mt
- PLASMA CUTTING TORCH(*)
with:
spare kits (electrodes, nozzles).
NOTE:
(*) Standard cable 6 mt
available.
PLASMA CUTTING POWER SOURCE 30
- Electric protection
- Case protection degree
- Insulation class
- Dimensions (mm)
- Torch included
Mains voltage1ph-50/60 Hz (V)
Duty Cycle (%)
Absorbed current (A)
Power (kW)
Power factor (cosph )
Delayed fuses
No-load voltage (V)
Duty Cycle (%)
Rated cutting voltage (V)
Rated cutting current (A)
Cutting capacity (carbon steel) (mm) :
MANUAL TORCH FOR PLASMA CUTTING
- Gas used
- Compressed air pressure :
- Total air flow rate (for Plasma and cooling): 100 litres / min
- 10 -
long; on request 12mt cable
:
:
:
: 430x165x270
:
INPUT
230±15%
: 100
: 12
: 1.9
: 0.68 0.72
: 16
OUTPUT
:
: 100
: 86.8
: 17
2
: dry compressed air
Class I
IP 23
H
30
21
3.5
16
370
30
92
30
10
4.5 bar