4
Notice: In order to get better performance and provide proper maintenance, please follow
the below instructions:
1 If welding machine is placed on a slope, a countermeasure should be taken to
keep it from falling on one side.
2 The degree of protection is IP21S, appropriate coverage is required in case of rain.
3 When using forklift, please fork welding machine at the side with “Fork” mark to avoid
falling.
4 When using hoisting machine, please fasten cordage in the rings on the top of welding machine
and make
the angle Φ across the cordage and perpendicular shown in the drawing not more than
15 degrees.
Cautions about electromagnetic disturbance
Extra precaution may be required when welding power source is used in a domestic establishment.
Before installing welding equipment ,the user shall make an assessment of potential Electromagnetic
problems in the surrounding area as below.
a) Other supply cables, control cables, signaling and telephone cables; above, below and adjacent to
the welding equipment;
b) Radio and television transmitters and receivers;
c) Computer and other control equipment;
d) Safety critical equipment, e.g. guarding of industrial equipment;
e) The health of the people around , e.g. the use of the pacemaker and hearing aids;
f) Equipment used for calibration or measurement;
g) The immunity of other equipment in the environment; the user shall ensure that other equipment
being used in the environment is compatible; this may require additional protection measures;
h) The time of day that welding or other activities are to be carried out.
The user shall be observe to reduce emission disturbance as below.
a)
Welding equipment should be connected to mains supply according to the manufacture’s
recommendations.
b) Welding equipment should be routinely m
aintained according to the manufacture’s
recommendations.
c) The welding cables should be kept as short as possible and should be positioned close together,
running at or close to the floor level.
d) Confirm to connection of all metallic components in the welding installation and adjacent to it should
be considered for safety.
e) The work-piece should be connected to earth for electric safety.
f)Selective screening and shielding of other cables and equipment in the surrounding area may
alleviate problems of interference. Screening of entire welding installation may be considered for
special applications.
The user should take the responsibility with respect to interference from welding.
3. SUMMARIZE
YD-400AT3
□□□
is a DC arc welding machine with inverter technology controlled by IGBT, which is
suitable for welding with cellulosic electrode, especially in the all- position-pipeliner welding condition.
□
Features
□
Using IGBT controlled method, a new type of transformer and unique case structure, the light and
compact machine provides a better mobility.
□
Using PWM controlled technology which offers constant welding current and stable welding arc.
□
There is an electric-shock-prevent switch in the frontal panel, when people welding in the danger
of electric shock, please turn it on that would guard the operator against electric shock.
□
There are also designed many guard functions, which can stop the welding and give off alarm at
the power abnormality or over-duty using or IGBT damage caused by over-current conditions.
□
Range of fluctuant power voltage :±20%
□
Unique design of tri-ends output enable to use ordinal electrode or cellulose electrode by
alternating output-ended, that offer easily usage and more advance welding performance.
□
Application
□
Suitable for all kinds of acid, basic, stainless steel, cellulosic and low-hydrogen alloy electrodes.
□
Widely applied to the petrochemical industry, power plant, construction industry, pipe-line
construction and so on.
4.
Rating
Table 4.1