Safety Devices; Explanation Of Technical Specifications - Cebora 359 Manual De Instrucciones

2.3 SAFETY DEVICES

This system comes equipped with the following safety
devices:
Overload cutout:
To avoid overloads. It is evidenced by the G led con-
tinuosly on (see fig.1).
Pneumatic:
Located on the torch inlet to prevent low air pres-
sure. The LED L lights when tripped (see fig.1).
The blinking L led means that the pressure has temporar-
ily gone below 3.2 ÷ 3.5 bar.
Electrical:
Located on the torch body, to prevent hazardous voltag-
es from occurring on the torch when, swirl ring, electrode
or nozzle holder are replaced;
• Do not remove or short-circuit the safety devices.
• Use only original spare parts.
• Always replace any damaged parts of the machine
with original materials.
• Do not run the machine without its housings. This
would be dangerous to the operator and anyone
else in the work area, and would prevent the ma-
chine from being cooled properly.

2.4 EXPLANATION OF TECHNICAL SPECIFICATIONS

This machine is manufactured according to the follow-
ing international standards: IEC 60974.1 - IEC 60974.3 -
IEC 60974.7 - IEC 60974.10 CL. A - IEC 61000-3-11 - IEC
61000-3-12 (61000-3-12 (see note 2).
N°. Serial number.
Must be indicated on any type of request re-
garding the device.
Three-phase static transformer-rectifier fre-
quency converter.
Downslope.
Suitable for plasma cutting.
torch type Type of torch that may be used with this ma-
chine to form a safe system.
U0. Secondary open-circuit voltage.
X. Duty cycle percentage.
The duty cycle expresses the percentage
of 10 minutes during which the welding ma-
chine may run at a certain current I2 and
voltage U2 without overheating.
I2. Cutting current.
Art. 359:
Art. 361:
U2 Secondary conventional voltage with weld-
ing current I2 This voltage depends on the
distance between the contact tip and the
workpiece.
If this distance increases, the cutting
voltage also increases and the duty cycle
X% may decrease.
U1. Rated supply voltage for 208/220/230V -
400/440V with automatic voltage change.
3~ 50/60Hz 50- or 60-Hz three-phase power supply
60A @ 208/220/230/400/440V
a) 100A @ 400/440V
b) 80A @ 208/220/230V
I1 Max Max. absorbed current at the correspond-
ing current I2 and voltage U2.
I1 eff This is the maximum value of the actual cur-
rent absorbed, considering the duty cycle.
This value usually corresponds to the capa-
city of the fuse (delayed type) to be used as
a protection for the equipment.
IP23 S. Protection rating for the housing.
Grade 3 as the second digit means that this
equipment may be stored, but it is not suit-
able for use outdoors in the rain, unless it is
protected.
S
Suitable for use in high-risk environments.
NOTE:
1- The machine has also been designed for use in envi-
ronments with a pollution rating of 1. (See IEC 60664).
2- This equipment complies with IEC 61000-3-12 provid-
ed that the maximum permissible system impedance
Zmax is less than or equal to 0,146 (Art. 359)-0,088
(Art. 361) 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 maximum permissible system impedance
Zmax less than or equal to 0,146 (Art. 359)-0,088 (Art.
361).
2.5 START-UP
The machine must be installed by qualified person-
nel. All connections must be made in compliance
with current safety standards and full observance of
safety regulations (see CEI 26-23 - IEC TS 62081).
Connect the air supply to the fitting B.
If the air supply comes from a pressure regulator of a
compressor or centralized system, the regulator must be
set to an output pressure of no more than 8 bar (0.8 Mpa).
If the air supply comes from a compressed air cylinder,
the cylinder must be equipped with a pressure regula-
tor. Never connect a compressed air cylinder directly
to the regulator on the machine! The pressure could
exceed the capacity of the regulator, which might ex-
plode!
Connect the power cord A: the yellow-green cable wire
must be connected to an efficient grounding socket on
the system. The remaining wires must be connected to
the power supply line by means of a switch placed as
close as possible to the cutting area, to allow it to be shut
off quickly in case of emergency.
The capacity of the cut-out switch or fuses installed in
series with the switch must be equal to the current I1eff.
absorbed by the machine.
The absorbed current I1eff. may be determined by read-
ing the technical specifications shown on the machine
under the available supply voltage U1.
Any extension cords must be sized appropriately for the
absorbed current I1max.
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