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Section 3. Electrical installations for special purposes
Chapter 3.2. Electrothermal installations. High frequency settings
Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)
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3.2.39. Ultrasonic and radio frequency installations include electrical installations used for heat treatment of materials (metals - with induction heating, non-conductive materials - in the electric field of capacitors) and their ultrasonic processing.
3.2.40. The frequency of the generated oscillations should be checked periodically according to the schedule, and also after each repair associated with the dismantling of the oscillatory circuit or the replacement of its parts, for compliance with the passport data.
3.2.41. The operation of unshielded heating stations, working capacitors or other technological devices in which the level of the electromagnetic or electric field at the workplace exceeds the rated values is not allowed.
3.2.42. When carrying out adjustment or repair work under voltage with the removal of a permanent guard from the installation or its release, make sure that the guard is removed or released and additional measures should be taken to create safe working conditions.
3.2.43. During measurements on a running installation, it is not allowed to carry out any adjustment work related to penetrating permanent fences and approaching live parts.
3.2.44. In the technological elements of installations for ultrasonic treatment, measures must be provided to ensure the absence of electrical potentials in those media and materials that the operating personnel have to come into contact with. All high-frequency parts must be shielded in accordance with the requirements of sanitary codes and regulations and permissible radio interference.
3.2.45. All work on the replacement of defective parts of the installation, fuses, etc. must be carried out after the voltage has been removed.
See other articles Section Rules for the technical operation of consumer electrical installations (PTE).
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