{"id":398264,"date":"2024-10-20T04:34:52","date_gmt":"2024-10-20T04:34:52","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-110-2018-2\/"},"modified":"2024-10-26T08:23:10","modified_gmt":"2024-10-26T08:23:10","slug":"ieee-c57-110-2018-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-110-2018-2\/","title":{"rendered":"IEEE C57.110-2018"},"content":{"rendered":"

Revision Standard – Active. Provided in this recommended practice are calculation methods for conservatively evaluating the feasibility for an existing installed dry-type or liquid immersed transformer, to supply nonsinusoidal load currents as a portion of the total load. Also provided is necessary application information to assist in properly specifying a new transformer expected to carry a load, a portion of which is composed of nonsinusoidal load currents. A number of examples illustrating these methods and calculations are presented. Reference annexes provide a comparison of the document calculations to calculations found in other industry standards. Suggested temperature rise calculation methods are detailed for reference purposes.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std C57.110\u2122-2018 Front cover <\/td>\n<\/tr>\n
2<\/td>\nTitle page <\/td>\n<\/tr>\n
4<\/td>\nImportant Notices and Disclaimers Concerning IEEE Standards Documents <\/td>\n<\/tr>\n
7<\/td>\nParticipants <\/td>\n<\/tr>\n
9<\/td>\nIntroduction <\/td>\n<\/tr>\n
10<\/td>\nContents <\/td>\n<\/tr>\n
11<\/td>\nIMPORTANT NOTICE
1.\u2002Overview
1.1\u2002Scope
1.2\u2002Purpose
2.\u2002Normative references <\/td>\n<\/tr>\n
12<\/td>\n3.\u2002Definitions
4.\u2002General considerations
4.1\u2002Transformer losses <\/td>\n<\/tr>\n
13<\/td>\n4.2\u2002Transformer capability equivalent <\/td>\n<\/tr>\n
14<\/td>\n4.3\u2002Basic data
4.4\u2002Transformer per-unit losses <\/td>\n<\/tr>\n
15<\/td>\n4.5\u2002Transformer losses at measured currents <\/td>\n<\/tr>\n
17<\/td>\n4.6\u2002Harmonic loss factor10 for winding eddy currents <\/td>\n<\/tr>\n
20<\/td>\n4.7\u2002Harmonic loss factor for other stray losses <\/td>\n<\/tr>\n
22<\/td>\n5.\u2002Design considerations for new transformer specification
5.1\u2002Harmonic current filtering
5.2\u2002Impact on the neutral
5.3\u2002Power factor correction equipment
5.4\u2002Electrostatic ground shields <\/td>\n<\/tr>\n
23<\/td>\n5.5\u2002Design consideration outside the windings
5.6\u2002Harmonic spectrum analysis
5.7\u2002Design consideration in the windings <\/td>\n<\/tr>\n
24<\/td>\n6.\u2002Recommended procedures for evaluating the load capability of existing transformers11
6.1\u2002Transformer capability equivalent calculation using design eddy-current loss data <\/td>\n<\/tr>\n
31<\/td>\n6.2\u2002Transformer capability equivalent calculation using data available from certified test report <\/td>\n<\/tr>\n
38<\/td>\n6.3\u2002Neutral bus capability for nonsinusoidal load currents that include third harmonic components <\/td>\n<\/tr>\n
40<\/td>\nAnnex\u00a0A (informative) Bibliography <\/td>\n<\/tr>\n
44<\/td>\nAnnex\u00a0B (informative) Tutorial discussion of transformer losses and the effect of harmonic currents on these losses <\/td>\n<\/tr>\n
47<\/td>\nAnnex\u00a0C (informative) Corrected harmonic loss factor for high frequencies19
C.1\u2002Transformer winding losses computation using FEM
C.2\u2002Corrected harmonic loss factor <\/td>\n<\/tr>\n
49<\/td>\nC.3\u2002Example calculation for dry-type transformer <\/td>\n<\/tr>\n
51<\/td>\nC.4\u2002Conclusion <\/td>\n<\/tr>\n
52<\/td>\nAnnex\u00a0D (informative) Comparison of UL K-factor definition and IEEE\u00a0Std\u00a0C57.110 harmonic loss factor definition
D.1\u2002UL definition of K-factor
D.2\u2002Relationship between K-factor and harmonic loss factor <\/td>\n<\/tr>\n
53<\/td>\nD.3\u2002Example calculations <\/td>\n<\/tr>\n
55<\/td>\nAnnex\u00a0E (informative) Temperature rise testing procedures
E.1\u2002Preferred method of performing a temperature rise test21
E.2\u2002Alternative simulated load temperature rise testing procedures22 <\/td>\n<\/tr>\n
60<\/td>\nAnnex\u00a0F (informative) Derivation of the ratio of highest winding eddy loss to average
F.1\u2002Introduction
F.2\u2002Wire wound windings <\/td>\n<\/tr>\n
61<\/td>\nF.3\u2002Foil wound windings
F.4\u2002Conservative loss ratio estimate <\/td>\n<\/tr>\n
62<\/td>\nAnnex\u00a0G (informative) Sample transformer loss data <\/td>\n<\/tr>\n
68<\/td>\nBack cover <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Recommended Practice for Establishing Liquid Immersed and Dry-Type Power and Distribution Transformer Capability when Supplying Nonsinusoidal Load Currents<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2018<\/td>\n68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":398271,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-398264","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ieee","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\/398264","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\/398271"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=398264"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=398264"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=398264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}