The Paton Welding Journal, 2001, №02

2001 №02 (09)

2001 №02 (11)

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The Paton Welding Journal, 2001, #2, 46-49 pages

Limiting the open-circuit voltage in resonance welding sources

A.E. Korotynsky

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The paper describes different variants of circuits of resonance welding sources incorporating open-circuit voltage limitation modules. Advantages and disadvantages of single- and two-transformer circuits, as well as those with phase regulation of welding current are considered. It is shown that by the energy parameters the most preferable circuit is that with a current-limiting resistor, in which the current drawn from the mains is not more than 0.13 A. The circuit with the phase regulator in the secondary contour, in which the output voltage in the limitation mode can be lowered to 6 V, is characterized by the highest electrical safety.
Keywords: arc welding, resonance welding sources, open circuit voltage limitation modules, electrical safety

References

1. Lauzhadis, A.l., Ojzerman, A.V. (1988) Technical requirements made of devices limiting the open-circuit voltage of welding transformers. Svaronoye Proizvodstro, 7, 25 -27.
2. Lauzhadis, A.l., Ojzerman, A.V. (1988) Purpose and main functions of devices limiting the open-circuit voltage of welding transformers. Ibid., 5, 27 - 28.
3. Lauzhadis, A.I., Ojzerman, A.V. (1988) On devices limiting the open-circuit voltage of welding transformers. Requirements of safety standards. Ibid., 3, 19 - 21.
4. (1990) EN 60 974-1-90. Ibid.: BS 638-90. Arc welding power sources, equipment and accessories. Part 10. Specification for safety requirements for arc welding equipment: welding power sources. Great Britain.
5. Vereshchago, E.N., Kvasnitsky, V.V., Makhov, V.A. eta/. (1999) Contact less device limiting the open-circuit voltage of arc welding power sources. Avtomaticheskaya Svarka, 6, 49-52.
6. Lebedev, V.K., Korotynsky, A.E. (1994) Arc in a circuit with an inductance and capacitance connected in series. Ibid., 12, 47-48.

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Suggested Citation

A.E. Korotynsky (2001) Limiting the open-circuit voltage in resonance welding sources. The Paton Welding J., 02, 46-49.

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