CHANGE REQUEST |
Request identity number: |
C00026 |
Applies to: |
S01391, S01392, S01393, S01396, S01397, S01398, S01399, S01400 |
Type of request: |
Technically new |
Request status level: |
Resolved |
Proposal: |
This change request was prepared on the basis of discussions at the SC 3A meeting in New Delhi and the comments from the German National Committee (3A/478/CC) on a proposal from the UK National Committee (3A/467/CD).
The document 3A/478/CC, which was formulated to fit the printed publication IEC 60617, required:
1. A change in the title.
2. A re-arrangement of the description texts so that the main index can have the symbols together because of their special nature.
3. Changes to the descriptions of symbols S01398 and S01399.
In the database the names have been modified as required. The keywords have been chosen to correspond to the suggested change of the title.
At the loading and validation of symbols when entering the printed publication IEC 60617 into the database it has been observed that a number of existing symbols do not distinguish clearly between the defined symbol and its context. It is often desirable to show parts of the anicipated context to improve the understanding and explain the application in a simple way. On the other hand it is also important to show clearly how much that really belongs to the symbol, to support e.g. the creation of symbol libraries.
In the actual case the originally proposed symbols consisted very much of context, and a solution to the problem was therefore desirable.
The context is now indicated by dotted lines, and an application note (A00262) has been added as explanation.
The method can be applied generally at the revision of existing symbols. It is also used in ISO 14617.
The original proposal also suggested double line thickness to be used for the conductor in the published symbol. Differences in line thickness is principally a matter of application of a symbol in a diagram, see IEC 61082-1, and the symbols are therefore shown with one line thickness only.
As the propsal has been discussed at a plenary meeting, no formal evaluation would have been necessary. However, the number of modifications to the original propsal is now so significant, that formal evaluation is reasonable.
Since the proposal contains technically new symbols it is relevant to consider the extended procedure for the approval.
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Reason: |
In some kinds of diagrams it is desirable to indicate parts that are gas-insulated.
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Requested by: |
TC3 Secretary
per-ake.svensson@se.abb.com
TC3 |
General comments: |
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Comments at evaluation: |
Submitted for evaluation 2001-08-26. Closing date 2001-09-21.
Because of the acceptance of the work at a plenary meeting, the evaluation is in this case limited to choise of procedure and general comments on the symbols.
NO(ES): I do think that the matter of a general method for indicating context related matters in a graphical symbol should be discussed by the NCs in full. The principle may have influence on many other symbols, and also rules to be provided in the revised edition of 61082. This matter is also dealt with in ISO 14617 I believe. I suggest that the extended procedure to be applied.
AT(WGAS):I am not sure if the dotted line is appropriate to indicate a conductor. May be it is better to discuss this in the national committees.
DE(RESC): As far as I see, the technical comments on 3A/467/CD are included in CR C00026. So I agree for a FDIS as the next step.
JP(HYAM): I think this proposal should be discussed in the NCs and be applied the extended database procedure.
Conclusion by the Secretary (2001-09-24): The continued procedure of this will be discussed at the meeting of TC3 in Oslo.
Addition by the Secretary (2001-10-09): This CR was discussed at the plenary meeting of TC3 in Oslo 2001-10-04:
- The method of indicating the context by dotted lines was accepted at the meeting.
- The procedure will continue with the circulation of a CDV. (The meeting accepted a direct circulation of an FDIS, but the Central Office later suggested to use a CDV, pointing at the present possibility to publish without the circulation of an FDIS if there are no negative votes.) |
Comments at validation: |
The validation is replaced by the circulation of document 3/587/CDV in accordance with the extended database procedure.
Comment 2002-07-07 by the Secretary: The commenting and voting on 3/587/CDV is recorded in document 3/611/CDV. The Change request was formally approved and document is 3/612/FDIS circulated for voting.
Because of comments on the symbols S01399 and S01400 these symbols are excluded from voting in that document. These symbols will be discussed at the plenary meeting of TC3 in Prague for further action.
Comment 2002-09-21 by the Secretary: Document 3/612/FDIS was approved 2002-09-20, and the symbols listed in this document were released 2002-09-21.
Comment 2002-10-30 by the Secretary: The further processing of S01399 and S01400 is continued in C00098. |
Voting at validation: |
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Requested on: |
2000-01-28 |
Evaluated on: |
2001-10-09 |
Resolved on: |
2002-09-21 |
Withdrawn on: |
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Evaluation closing on: |
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Validation closing on: |
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