BS EN IEC 60519‑8:2020 pdf download – Safety in installations for electroheating and electromagnetic processing Part 8: Particular requirements for electroslag remelting furnaces
Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 6051 9 series, published under the general title Safety in installations for electroheating and electromagnetic processing, can be found on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. This part of IEC 6051 9 is to be read in conjunction with Part 1 . It supplements or modifies the corresponding clauses of Part 1 . Where the text indicates a “modification” of, “addition” to or a “replacement” of the relevant provision of Part 1 , these changes are made to the relevant text of Part 1 . Where no change is necessary, the words “This clause of Part 1 is applicable” are used. When a particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is reasonable. When a particular subclause of Part 1 is not applicable, the word “Void” is used. Additional specific provisions to those in Part 1 , given as individual clauses or subclauses, are numbered starting from 1 01 . NOTE The following numbering system is used: – subclauses, tables and figures that are numbered starting from 1 01 are additional to those in Part 1 ; – unless notes are in a new subclause or involve notes in Part 1 , they are numbered starting from 1 01 , including those in a replaced clause or subclause; – additional annexes are lettered AA, BB, etc. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http://webstore.iec.ch” in the data related to the specific document. At this date, the document will be • reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
3.3 Parts and accessories Additions: 3.3.1 01 multi-station configuration electroslag remelting furnace configuration having more than one melt station 3.3.1 02 cooling-water flow rate addition of the following flow rates: – flow rate of water to cool mould and base plate – flow rate of water to cool high-current line – flow rate of water to cool the furnace transformer – flow rate of water to cool the other elements of the furnace Note 1 to entry: The cooling-water flow rate is expressed in m 3 /h. 4 Classification and sub-division of equipment and installations This clause of Part 1 is applicable except as follows. 4.1 Classification by processing frequency Addition: The voltage band is determined by the line-to-line open-circuit rated supply voltage to the electrode(s). 5 Risk assessment This clause of Part 1 is applicable. 6 General provisions This clause of Part 1 is applicable. 7 Protection against hazards from electric shock This clause of Part 1 is applicable except as follows. 7.6 Protective equipotential bonding Addition: 7.6.1 01 The following requirements apply to the power circuit. 1 ) This circuit shall include an earthing connection preferably at the base plate, which supports the ingot. If the installation enables several melting stations to be supplied from the same power supply, each station shall be provided with an earth connection. For the particular case of a single-head multi-station co-axial electroslag remelting furnace, it is preferable to ground the power circuit at the power supply instead of at the base. In no case shall the operating personnel be exposed to harmful voltages.