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Introduction
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Thank you for purchasing one of our products. Please read in-
structions on use in this manual as well as the safety rules giv-
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en in the attached booklet and follow them carefully to get the
best performance from the plant and be sure that the parts have
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the longest service life possible. In the interest of customers, you
are recommended to have maintenance and, where necessary,
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repairs carried out by the workshops of our service organisation,
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since they have suitable equipment and specially trained person-
nel available. All our machinery and systems are subject to con-
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tinual development. We must therefore reserve the right to modify
their construction and properties.
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Description
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RAINBOW is the latest evolution in inverter technology generators
for welding. The most advanced materials and components have
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been used to design and produce it such as:
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• Vrd (Voltage Reduction Device), which makes it possible to use
the machine in environments where the risk of electric shock or
electrocution caused by arc welding is enormously increased by
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the presence of water, humidity, or heat, and particularly where
the ambient temperature exceeds 32°C. This device can be ex-
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cluded by means of suitable settings on the electronic board
that controls the inverter (see the "Deactivating the VRD de-
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vice" paragraph).
• Main planar transformer with extremely low load loss.
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• Electronic auxiliary feeder.
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• Voltage doubler ensuring precision striking, constant arc and
very low electrical input from the main supply by the welder.
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• Extremely high frequency power INVERTER with very latest type
of IGBT to reduce switching losses to a minimum.
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• The inverter resists ample current variations (MAX 290V) and
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can be utilized with very long electric cables (MAX 100 m).
• High electric efficiency (> 0,8).
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• Selector with 3 weld procedures:
- Basic and "cellulosic" electrodes with "Hot Start" and "Arc
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Force" devices.
- Stainless steel electrodes with special characteristics for a
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soft arc.
- TIG welding with thermal controlled (TCS) "Lift" type striking
reducing tungsten inclusions to a minimum and allowing to
also strike on sharp edges.
• The generator also conforms to all European Union standards
and directives in force.
Technical data
The general technical data of the system are summarized in ta-
ble 1.
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