{"id":396763,"date":"2024-10-20T04:26:19","date_gmt":"2024-10-20T04:26:19","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-12-90-1993-2\/"},"modified":"2024-10-26T08:13:53","modified_gmt":"2024-10-26T08:13:53","slug":"ieee-c57-12-90-1993-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-12-90-1993-2\/","title":{"rendered":"IEEE C57.12.90-1993"},"content":{"rendered":"

Revision Standard – Superseded. Replaced by IEEE Std C57.12.90-1999 (SH\/SS94778) Abstract: Methods for performing tests specified in IEEE Std C57.12.00-1993, IEEE Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers, 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 measurement, polarity and phase-relation tests, ratio tests, no-load-loss and excitation current measurements, impedance and loadloss measurements, dielectric tests, temperature tests, short-circuit tests, and audible-sound-level measurements.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nTitle page <\/td>\n<\/tr>\n
3<\/td>\nIntroduction
Participants <\/td>\n<\/tr>\n
7<\/td>\nCONTENTS <\/td>\n<\/tr>\n
10<\/td>\nPart I: IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
1. Scope
2. References <\/td>\n<\/tr>\n
12<\/td>\n3. Terminology <\/td>\n<\/tr>\n
13<\/td>\n4. General
4.1 Types of tests
4.2 Test requirements
4.3 Purpose
4.4 Test sequence <\/td>\n<\/tr>\n
14<\/td>\n4.5 Instrumentation
5. Resistance measurements
5.1 Determination of cold temperature
5.2 Conversion of resistance measurements <\/td>\n<\/tr>\n
15<\/td>\n5.3 Resistance measurement methods <\/td>\n<\/tr>\n
16<\/td>\n6. Polarity and phase-relation tests
6.1 Subtractive and additive polarity
6.2 Polarity tests: Single-phase transformers <\/td>\n<\/tr>\n
18<\/td>\n6.3 Polarity and phase-relation tests: Polyphase transformers <\/td>\n<\/tr>\n
22<\/td>\n7. Ratio tests
7.1 General
7.2 Tolerances for ratio
7.3 Ratio test methods <\/td>\n<\/tr>\n
24<\/td>\n8. No-load losses and excitation current
8.1 General <\/td>\n<\/tr>\n
25<\/td>\n8.2 No-load loss test <\/td>\n<\/tr>\n
27<\/td>\n8.3 Waveform correction of no-load losses <\/td>\n<\/tr>\n
28<\/td>\n8.4 Temperature correction of no-load losses
8.5 Determination of excitation (no-load) current <\/td>\n<\/tr>\n
29<\/td>\n9. Load losses and impedance voltage
9.1 General
9.2 Factors affecting the values of load losses and impedance voltage <\/td>\n<\/tr>\n
30<\/td>\n9.3 Tests for measuring load losses and impedance voltage <\/td>\n<\/tr>\n
36<\/td>\n9.4 Calculation of load losses and impedance voltage from test data <\/td>\n<\/tr>\n
39<\/td>\n9.5 Zero-phase-sequence impedance <\/td>\n<\/tr>\n
42<\/td>\n10. Dielectric tests
10.1 General <\/td>\n<\/tr>\n
44<\/td>\n10.2 Switching impulse test procedures <\/td>\n<\/tr>\n
45<\/td>\n10.3 Lightning impulse test procedures <\/td>\n<\/tr>\n
49<\/td>\n10.4 Routine impulse test for distribution transformers <\/td>\n<\/tr>\n
51<\/td>\n10.5 Low-frequency tests <\/td>\n<\/tr>\n
52<\/td>\n10.6 Applied voltage tests
10.7 Induced voltage tests for distribution and Class I power transformers <\/td>\n<\/tr>\n
53<\/td>\n10.8 Induced voltage test for Class II power transformers <\/td>\n<\/tr>\n
54<\/td>\n10.9 Partial discharge measurement <\/td>\n<\/tr>\n
55<\/td>\n10.10 Insulation power-factor tests <\/td>\n<\/tr>\n
58<\/td>\n10.11 Insulation resistance tests <\/td>\n<\/tr>\n
59<\/td>\n11. Temperature rise
11.1 Ambient temperature measurement <\/td>\n<\/tr>\n
60<\/td>\n11.2 Liquid rise measurement
11.3 Average winding temperature-rise measurement <\/td>\n<\/tr>\n
62<\/td>\n11.4 Other temperature measurements
11.5 Test methods <\/td>\n<\/tr>\n
65<\/td>\n11.6 Correction of temperature rises for differences in altitude
12. Short-circuit tests
12.1 Scope <\/td>\n<\/tr>\n
66<\/td>\n12.2 Test connections <\/td>\n<\/tr>\n
67<\/td>\n12.3 Test requirements <\/td>\n<\/tr>\n
68<\/td>\n12.4 Test procedure <\/td>\n<\/tr>\n
69<\/td>\n12.5 Proof of satisfactory performance <\/td>\n<\/tr>\n
70<\/td>\n13. Audible sound emissions
13.1 General <\/td>\n<\/tr>\n
71<\/td>\n13.2 Instrumentation <\/td>\n<\/tr>\n
72<\/td>\n13.3 Test conditions <\/td>\n<\/tr>\n
74<\/td>\n13.4 Microphone positions <\/td>\n<\/tr>\n
75<\/td>\n13.5 Sound power rating <\/td>\n<\/tr>\n
77<\/td>\n13.6 Presentation of results <\/td>\n<\/tr>\n
79<\/td>\n14. Calculated data
14.1 Reference temperature
14.2 Losses and excitation current <\/td>\n<\/tr>\n
80<\/td>\n14.3 Efficiency
14.4 Voltage regulation of a constant-voltage transformer <\/td>\n<\/tr>\n
87<\/td>\n15. Bibliography <\/td>\n<\/tr>\n
88<\/td>\nAnnex to Part I\u2014Minimum information to be included in certified tes data
0.1 Minimum information to be included in certified test data <\/td>\n<\/tr>\n
90<\/td>\nPart II: IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers
1. Scope
2. Short-circuit testing techniques
2.1 Fault application <\/td>\n<\/tr>\n
91<\/td>\n2.2 Test connections
2.3 Duration of test <\/td>\n<\/tr>\n
93<\/td>\n2.4 Number of tests
2.5 Calibration tests <\/td>\n<\/tr>\n
95<\/td>\n2.6 Voltage and current measurements <\/td>\n<\/tr>\n
97<\/td>\n3. Failure-detection techniques
3.1 Voltage and current waveshapes <\/td>\n<\/tr>\n
98<\/td>\n3.2 Leakage impedance
3.3 Excitation current
3.4 Low-voltage impulse (LVI) testing <\/td>\n<\/tr>\n
105<\/td>\n3.5 Visual inspection
3.6 Dielectric tests
4. Analysis of test results
4.1 Terminal measurements <\/td>\n<\/tr>\n
107<\/td>\n4.2 Visual inspection <\/td>\n<\/tr>\n
115<\/td>\n4.3 Dielectric tests
5. Bibliography <\/td>\n<\/tr>\n
116<\/td>\nAnnex to Part II\u2014Essential information for inclusion in transformer short-circuit test reports
A.1 Essential information for inclusion in transformer short-circuit test reports <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard Test Code for Liquid-Immersed Distribution, Power and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power 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>\n1993<\/td>\n116<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":396772,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-396763","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\/396763","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\/396772"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=396763"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=396763"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=396763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}