Publication details
| Publication CODE |
Title |
| NBN EN 60567:2012 (2011-12) |
OIL-FILLED ELECTRICAL EQUIPMENT
SAMPLING OF GASES AND ANALYSIS OF FREE AND DISSOLVED GASES - GUIDANCE |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
3 P.. |
Description
Deals with the techniques for sampling free gases from gascollecting relays from power transformers. Three methods of sampling free gases are described.
The techniques for sampling oil from oil-filled equipment such as power and instrument transformers, reactors, bushings, oil-filled cables and oil-filled tank-type capacitors are no longer covered by this standard, but are instead described in 4.2 of IEC 60475:2011.
Before analysing the gases dissolved in oil, they are first extracted from the oil. Three basic methods are described, one using extraction by vacuum (Toepler and partial degassing), another by displacement of the dissolved gases by bubbling the carrier gas through the oil sample (stripping) and the last one by partition of gases between the oil sample and a small volume of the carrier gas (headspace). The gases are analysed quantitatively after extraction by gas chromatography; a method of analysis is described. Free gases from gas-collecting relays are analysed without preliminary treatment.
The preferred method for assuring the performance of the gas extraction and analysis equipment, considered together as a single system, is to degas samples of oil prepared in the laboratory and containing known concentrations of gases ("gas-in-oil standards") and quantitatively analyse the gases extracted. Two methods of preparing gas-in-oil standards are described.
For daily calibration checks of the chromatograph, it is convenient to use a standard gas mixture containing a suitable known amount of each of the gas components to be in a similar ratio to the common ratios of the gases extracted from transformer oils.
The techniques described take account, on the one hand, of the problems peculiar to analyses associated with acceptance testing in the factory, where gas contents of oil are generally very low and, on the other hand, of the problems imposed by monitoring equipment in the field, where transport of samples may be by un-pressurized air freight and where considerable differences in ambient temperature may exist between the plant and the examining laboratory.
|
| Class |
C27
(ELECTRICAL MANUFACTURE - ELECTROTECHNICAL MATERIALS FLUIDES FOR ELECTROTECHNICAL APPLICATIONS)
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Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 60567:2011.
For the series NBN EN 50XXX, the standards are however complete.
|
DE version
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EN version
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FR version
|
|
Status
Origin
| Committee |
TC 10
FLUIDS FOR ELECTROTECHNICAL APPLICATIONS
|
| Responsible |
Monsieur DE LEEUW Thierry, Technical Officer
Diamant Building
Bd Auguste Reyers, 80
1030
BRUXELLES
Phone: +32 2 706 85 72
E-mail: thierry.deleeuw@ceb-bec.be
|
Approval
| BEC Approval |
2011-11-24 |
| NBN Approval |
2012-01-27 |
| Belgian Official Journal |
2012-03-12 |
| Registration |
125226 |
| ICS-Code (International Standards Classification) |
29.040
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2011-11-24 |
| Date of availability (d.a.v.) |
2011-12-16 |
| Date of announcement (d.o.a.) |
2012-02-24 |
| Date of publication (d.o.p.) |
2012-08-24 |
| Date of withdrawal former edition (d.o.w.) |
2014-11-24 |
|
Correspondences with international standards
| Relation |
International standard |
Date |
| is identical to |
EN 60567:2011
|
2011-12-16 |
| is identical to |
IEC 60567:2011/ed. 4.0
|
2011-10-20 |
Relations to belgian/foreign publications
| Type |
Origin |
Code |
Date |
| Document |
Foreign |
ASTM D2780 |
|
| Standard |
Foreign |
ISO 5725 |
|
| Standard |
Belgium |
NBN EN 60296 |
|
| Standard |
Belgium |
NBN EN 60475 |
|
| Standard |
Belgium |
NBN EN 60599 |
|
|
