CLC/TR 50462:2008
(Main)Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors
Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors
This Technical Report illustrates the procedures and criteria to be applied to evaluate the uncertainty affecting the measurements of no load and load losses during the routine tests on power transformers. Even if the attention is especially paid to the transformers, the document can be also used for the measurements of reactor losses, when applicable.
Regeln zur Bestimmung der Messunsicherheiten von Verlusten in Leistungstransformatoren und Drosselspulen
Pravila za ugotavljanje negotovosti pri meritvah izgub na močnostnih transformatorjih in dušilkah
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TP CLC/TR 50462:2008
01-november-2008
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Rules for the determination of uncertainties in the measurement of the losses on power
transformers and reactors
Regeln zur Bestimmung der Messunsicherheiten von Verlusten in
Leistungstransformatoren und Drosselspulen
Ta slovenski standard je istoveten z: CLC/TR 50462:2008
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST-TP CLC/TR 50462:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TP CLC/TR 50462:2008
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SIST-TP CLC/TR 50462:2008
TECHNICAL REPORT
CLC/TR 50462
RAPPORT TECHNIQUE
July 2008
TECHNISCHER BERICHT
ICS 29.180
English version
Rules for the determination of uncertainties in the measurement
of the losses on power transformers and reactors
This Technical Report was approved by CENELEC on 2008-03-07.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TR 50462:2008 E
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SIST-TP CLC/TR 50462:2008
CLC/TR 50462:2008 – 2 –
Foreword
This Technical Report was prepared by the Technical Committee CENELEC TC 14, Power
transformers.
The text of the draft was submitted to vote in accordance with the Internal Regulations, Part 2,
Subclause 11.4.3.3 (simple majority) and was approved by CENELEC as CLC/TR 50462 on
2008-03-07.
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SIST-TP CLC/TR 50462:2008
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Contents
Introduction. 5
1 Sc op e . . 6
2 Normative references . 6
3 Definitions . 6
4 Symbols . 6
4.1 General symbols . 6
4.2 Symbols for uncertainty . 7
5 Power measurement, systematic deviation and uncertainty . 8
6 Procedures for no-load loss . 8
6.1 General . 8
6.2 Model function for no-load losses at reference conditions . 9
6.3 Uncertainty budget . 10
7 Procedures for load loss . 11
7.1 General . 11
7.2 Model function for load loss at reference conditions . 11
7.3 Uncertainty budget for measured power P referred to rated current . 12
2
7.4 Uncertainty budget for reported load loss . 14
8 Three-phase calculations . 14
8.1 Power . 14
8.2 Reference voltage (current) . 15
9 Reporting .
...
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