{"id":81017,"date":"2024-10-17T18:50:26","date_gmt":"2024-10-17T18:50:26","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-12-90-2007\/"},"modified":"2024-10-24T19:45:26","modified_gmt":"2024-10-24T19:45:26","slug":"ieee-c57-12-90-2007","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-12-90-2007\/","title":{"rendered":"IEEE C57.12.90 2007"},"content":{"rendered":"

Revision Standard – Inactive – Superseded. Methods for performing tests specified in IEEE Std C57.12.00TM-2006 and other standards applicable to liquid-immersed distribution, power, and regulating transformers are described. Instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers, grounding transformers, and mine transformers are excluded. This standard covers resistance measurements, polarity and phaserelation tests, ratio tests, no-load-loss and excitation current measurements, impedance and load loss measurements, dielectric tests, temperature tests, short-circuit tests, audible sound level measurements, calculated data, and certified test data.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std C57.12.90-2006, IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers <\/td>\n<\/tr>\n
3<\/td>\nTitle page <\/td>\n<\/tr>\n
6<\/td>\nIntroduction
Notice to users
Errata <\/td>\n<\/tr>\n
7<\/td>\nInterpretations
Patents
Participants <\/td>\n<\/tr>\n
11<\/td>\nCONTENTS <\/td>\n<\/tr>\n
13<\/td>\n1. Overview
1.1 Scope
1.2 Purpose
1.3 Word usage <\/td>\n<\/tr>\n
14<\/td>\n2. Normative references <\/td>\n<\/tr>\n
15<\/td>\n3. Definitions <\/td>\n<\/tr>\n
16<\/td>\n4. General
4.1 Types of tests
4.2 Test requirements
4.3 Test sequence
4.4 Instrumentation <\/td>\n<\/tr>\n
17<\/td>\n5. Resistance measurements
5.1 Determination of cold temperature
5.2 Conversion of resistance measurements <\/td>\n<\/tr>\n
18<\/td>\n5.3 Resistance measurement methods <\/td>\n<\/tr>\n
19<\/td>\n6. Polarity and phase-relation tests
6.1 Subtractive and additive polarity <\/td>\n<\/tr>\n
21<\/td>\n6.2 Polarity tests: single-phase transformers <\/td>\n<\/tr>\n
22<\/td>\n6.3 Polarity and phase-relation tests: polyphase transformers <\/td>\n<\/tr>\n
25<\/td>\n7. Ratio tests
7.1 General <\/td>\n<\/tr>\n
26<\/td>\n7.2 Tolerances for ratio
7.3 Ratio test methods <\/td>\n<\/tr>\n
28<\/td>\n8. No-load losses and excitation current
8.1 General
8.2 No-load loss test <\/td>\n<\/tr>\n
31<\/td>\n8.3 Waveform correction of no-load losses
8.4 Temperature correction of no-load losses <\/td>\n<\/tr>\n
32<\/td>\n8.5 Determination of excitation (no-load) current
9. Load losses and impedance voltage
9.1 General <\/td>\n<\/tr>\n
33<\/td>\n9.2 Factors affecting the values of load losses and impedance voltage
9.3 Tests for measuring load losses and impedance voltage <\/td>\n<\/tr>\n
40<\/td>\n9.4 Calculation of load losses and impedance voltage from test data <\/td>\n<\/tr>\n
42<\/td>\n9.5 Zero-phase-sequence impedance <\/td>\n<\/tr>\n
45<\/td>\n10. Dielectric tests
10.1 General <\/td>\n<\/tr>\n
47<\/td>\n10.2 Switching impulse test procedures <\/td>\n<\/tr>\n
48<\/td>\n10.3 Lightning impulse test procedures <\/td>\n<\/tr>\n
52<\/td>\n10.4 Routine impulse test for distribution transformers <\/td>\n<\/tr>\n
55<\/td>\n10.5 Low-frequency tests
10.6 Applied voltage tests
10.7 Induced voltage tests for distribution and Class I power transformers <\/td>\n<\/tr>\n
56<\/td>\n10.8 Induced voltage test for Class II power transformers <\/td>\n<\/tr>\n
58<\/td>\n10.9 Partial discharge measurement
10.10 Insulation power-factor tests <\/td>\n<\/tr>\n
61<\/td>\n10.11 Insulation resistance tests <\/td>\n<\/tr>\n
62<\/td>\n11. Temperature-rise tests <\/td>\n<\/tr>\n
63<\/td>\n11.1 Test methods <\/td>\n<\/tr>\n
65<\/td>\n11.2 Resistance measurements <\/td>\n<\/tr>\n
66<\/td>\n11.3 Temperature measurements <\/td>\n<\/tr>\n
69<\/td>\n11.4 Correction of temperature rise test results <\/td>\n<\/tr>\n
70<\/td>\n12. Short-circuit tests
12.1 General <\/td>\n<\/tr>\n
71<\/td>\n12.2 Test connections <\/td>\n<\/tr>\n
72<\/td>\n12.3 Test requirements <\/td>\n<\/tr>\n
73<\/td>\n12.4 Test procedure <\/td>\n<\/tr>\n
74<\/td>\n12.5 Proof of satisfactory performance <\/td>\n<\/tr>\n
76<\/td>\n13. Audible sound emissions
13.1 General
13.2 Instrumentation <\/td>\n<\/tr>\n
77<\/td>\n13.3 Test conditions <\/td>\n<\/tr>\n
78<\/td>\n13.4 Microphone positions <\/td>\n<\/tr>\n
80<\/td>\n13.5 Sound power rating <\/td>\n<\/tr>\n
83<\/td>\n13.6 Presentation of results <\/td>\n<\/tr>\n
89<\/td>\n14. Calculated data
14.1 Reference temperature
14.2 Losses and excitation current
14.3 Efficiency
14.4 Voltage regulation of a constant-voltage transformer <\/td>\n<\/tr>\n
92<\/td>\nAnnex A (informative) Partial discharge measurement using radio-influence voltage instrumentation and its failure detection <\/td>\n<\/tr>\n
94<\/td>\nAnnex B (informative) Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2007<\/td>\n94<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":81018,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-81017","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\/81017","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\/81018"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=81017"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=81017"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=81017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}