This part of IEC 60076 is applicable to transformers in the scope of IEC 60076-1.<\/p>\n
The energy performance levels given in Clause 6 are not applicable to the following transformers:<\/p>\n
transformers for high current rectifiers as described in the IEC 61378 (all parts) and in the IEC 60146 (all parts);<\/p>\n<\/li>\n
transformers for furnace applications;<\/p>\n<\/li>\n
transformers for offshore applications;<\/p>\n
\nNOTE 1 Transformer to be installed on fixed or floating offshore platforms, offshore wind turbines or on board of ships and all kind of vessels).<\/p>\n<\/blockquote>\n<\/li>\n
- \n
transformers for emergency or temporary mobile installations;<\/p>\n
\nNOTE 2 Transformers designed only to provide cover for a specific time limited situation when the normal power supply is interrupted either due to an unplanned occurrence such as failure or a station refurbishment, but not to permanently upgrade an existing substation.<\/p>\n<\/blockquote>\n<\/li>\n
- \n
traction transformers;<\/p>\n<\/li>\n
- \n
earthing transformers as described in 3.1.10 of IEC 60076-6:2007.<\/p>\n<\/li>\n
- \n
phase shifting transformers;<\/p>\n<\/li>\n
- \n
instrument transformers (IEC 61869-1);<\/p>\n<\/li>\n
- \n
transformers and auto-transformers specifically designed for railway feeding systems, as defined in EN 50329;<\/p>\n<\/li>\n
- \n
traction catenary supply transformer for 16,67 Hz;<\/p>\n<\/li>\n
- \n
transformer for high current rectifiers (IEC 61869-1);<\/p>\n
\nNOTE 3 These are transformers specifically designed and intended to supply power electronic or rectifier loads specified according to IEC 61378-1.<\/p>\n<\/blockquote>\n
\nNOTE 4 This exclusion does not apply to transformers intended to provide AC power from DC sources such as transformers for wind turbine and photo voltaic applications as well as transformers designed for DC transmission and distribution applications.\u201d<\/p>\n<\/blockquote>\n<\/li>\n
- \n
transformers for railway feeding systems (EN 50329);<\/p>\n<\/li>\n
- \n
subsea transformers;<\/p>\n<\/li>\n
- \n
starting-, testing- and welding transformers;<\/p>\n<\/li>\n
- \n
starting transformers, specifically designed for starting three-phase induction motors so as to eliminate supply voltage dips;<\/p>\n
\nNOTE 5 Examples are transformers that are de-energised during normal operation, used for the purpose of starting a rotating machine).<\/p>\n<\/blockquote>\n<\/li>\n
- \n
transformers specifically designed for explosion-proof and underground mining applications;<\/p>\n<\/li>\n
- \n
transformers which cannot fulfil the energy performance requirements due to unavoidable size and weight limitations.<\/p>\n
\nNOTE 6 Due to the unavoidable weight and size limitation for a rolling stock application, this definition includes all traction transformers for rolling stock, irrespective of the frequency (e.g. 16,7 Hz, 25 Hz, 50 Hz, 60 Hz).<\/p>\n<\/blockquote>\n<\/li>\n<\/ul>\n
In this document, “transformers” includes both separate winding transformers and autotransformers.<\/p>\n
\nNOTE 7 Transformers intended to provide AC power from DC sources such as transformers for wind turbine and photo voltaic applications as well as transformers designed for DC transmission and distribution applications are included in the Scope of this document.<\/p>\n<\/blockquote>\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 6<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 8<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 9<\/td>\n 1 Scope <\/td>\n<\/tr>\n \n 10<\/td>\n 2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n\n 11<\/td>\n 4 Efficiency and efficiency index calculation
4.1 General <\/td>\n<\/tr>\n\n 12<\/td>\n 4.2 Methods of evaluating energy performance <\/td>\n<\/tr>\n \n 13<\/td>\n 4.3 Method A
4.3.1 Efficiency index general formula
4.3.2 Peak efficiency index <\/td>\n<\/tr>\n\n 14<\/td>\n 4.4 Method B
4.4.1 Efficiency index general formula (EIB)
4.4.2 Efficiency index at 50 % loading (EIB50) <\/td>\n<\/tr>\n\n 15<\/td>\n 5 Specification of energy performance
6 Energy performance levels
6.1 General <\/td>\n<\/tr>\n\n 16<\/td>\n 6.2 Liquid immersed transformers
6.2.1 Minimum PEI method A
Tables
Table 1 \u2013 PEI values for single-phase transformers with Um \u2264 12 kV and Sr \u2264 100 kVA <\/td>\n<\/tr>\n\n 17<\/td>\n Table 2 \u2013 PEI values for transformers with Um \u2264 36 kV and Sr \u2264 3\u200a150 kVA <\/td>\n<\/tr>\n \n 18<\/td>\n 6.2.2 Maximum load losses and maximum no load losses for transformers with rated frequency equal to 50 Hz
Table 3 \u2013 PEI values for transformers with Um > 36 kV or Sr >3\u200a150 kVA <\/td>\n<\/tr>\n\n 19<\/td>\n 6.2.3 Efficiency index method B
Table 4 \u2013 Maximum load losses and maximum no load losses for transformers with rated frequency equal to 50 Hz <\/td>\n<\/tr>\n\n 20<\/td>\n Table 5 \u2013 EIB50 value for liquid-immersed 60 Hz transformers <\/td>\n<\/tr>\n \n 21<\/td>\n 6.3 Dry type transformers
6.3.1 Minimum PEI value method A
Table 6 \u2013 EIB50 value for liquid-immersed 50 Hz transformers <\/td>\n<\/tr>\n\n 22<\/td>\n Table 7 \u2013 PEI values for dry type transformers with Um \u2264 36 kV and Sr \u2264 3\u200a150 kVA
Table 8 \u2013 PEI values for transformers with Um \u2264 36 kV and Sr > 3 150 kVA <\/td>\n<\/tr>\n\n 23<\/td>\n 6.3.2 Maximum load loss and maximum no load loss for transformers with rated frequency equal to 50 Hz
Table 9 \u2013 PEI values for transformers with Um > 36 kV <\/td>\n<\/tr>\n\n 24<\/td>\n 6.3.3 Efficiency index method B at 50 % load factor
Table 10 \u2013 Maximum load loss and maximum no load loss for transformers with rated frequency equal to 50 Hz <\/td>\n<\/tr>\n\n 25<\/td>\n Table 11 \u2013 EIB50 values for single-phase dry type 60 Hz transformers <\/td>\n<\/tr>\n \n 26<\/td>\n Table 12 \u2013 EIB50 values for three-phase dry type 60 Hz transformers <\/td>\n<\/tr>\n \n 27<\/td>\n 7 Tolerance
7.1 General
7.2 Losses
7.3 PEI
Table 13 \u2013 EIB50 values for dry type 50 Hz transformers <\/td>\n<\/tr>\n\n 28<\/td>\n Annex A (informative)Capitalisation of losses
A.1 General theory, concept of capitalisation <\/td>\n<\/tr>\n\n 29<\/td>\n A.2 Impact of capitalisation values
A.3 Capitalisation formula
A.3.1 General <\/td>\n<\/tr>\n\n 30<\/td>\n A.3.2 Calculation of factor A
A.3.3 Calculation of factor B <\/td>\n<\/tr>\n\n 31<\/td>\n Figure A.1 \u2013 Load profile <\/td>\n<\/tr>\n \n 32<\/td>\n A.3.4 Use of A and B for tender evaluation <\/td>\n<\/tr>\n \n 33<\/td>\n A.3.5 Determination of factors A and B <\/td>\n<\/tr>\n \n 34<\/td>\n Annex B (informative)Efficiency based on a survey of world practices
B.1 General
B.2 50 Hz efficiency
B.3 60 Hz efficiency
Table B.1 \u2013 Efficiency equations for transformers with a primary voltage of 36 kV and below, from 5 kVA to 1 \u200a000 kVA single-phase and 15 kVA to 3 150 kVA three-phase, 50 Hz and 50 % load method A <\/td>\n<\/tr>\n\n 35<\/td>\n Table B.2 \u2013 Efficiency equations for transformers with a primary voltage of 36 kV and below, from 5 kVA to 1 \u200a000 kVA single-phase and 15 kVA to 3 150 kVA three-phase, 60 Hz and 50 % load method B <\/td>\n<\/tr>\n \n 36<\/td>\n Annex C (informative)Japanese practices
C.1 General
C.2 Scope
C.3 Maximum losses calculation methods
C.4 Maximum losses <\/td>\n<\/tr>\n\n 37<\/td>\n Table C.1 \u2013 Maximum losses <\/td>\n<\/tr>\n \n 38<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Power transformers – Energy efficiency<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2018<\/td>\n 40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":421897,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-421887","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/421887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/421897"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=421887"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=421887"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=421887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}