{"id":81769,"date":"2024-10-17T18:58:17","date_gmt":"2024-10-17T18:58:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-12-51-2009\/"},"modified":"2024-10-24T19:47:53","modified_gmt":"2024-10-24T19:47:53","slug":"ieee-c57-12-51-2009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-12-51-2009\/","title":{"rendered":"IEEE C57.12.51 2009"},"content":{"rendered":"

New IEEE Standard – Active. This standard is intended to set forth characteristics relating to performance, limited electrical and mechanical interchangeability, and safety of the equipment described, and to assist in the proper selection of such equipment. Specific rating combinations are described in the range from 750\/1000 to 7500\/10 000 kVA inclusive, with high-voltage 601 to 34 500 volts inclusive and low-voltage 208Y\/120 to 4160 volts inclusive. Part I of this standard describes certain electrical and mechanical requirements and takes into consideration certain safety features of 60-Hz, two-winding, three-phase, ventilated dry-type transformers with self-cooled ratings 501 kVA and larger, generally used for step-down purposes. Part Il describes other requirements or alternatives which may be specified for some applications and lists forced-air-cooled ratings for certain sizes.<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std C57.12.51-2008 Front Cover <\/td>\n<\/tr>\n
3<\/td>\nTitle Page <\/td>\n<\/tr>\n
4<\/td>\nAbstract\/Keywords <\/td>\n<\/tr>\n
6<\/td>\nIntroduction
Notice to users
Laws and regulations
Copyrights
Updating of IEEE documents <\/td>\n<\/tr>\n
7<\/td>\nErrata
Interpretations
Patents <\/td>\n<\/tr>\n
8<\/td>\nParticipants <\/td>\n<\/tr>\n
9<\/td>\nContents <\/td>\n<\/tr>\n
11<\/td>\nImportant Notice
1. Overview
1.1 Scope
1.2 Purpose <\/td>\n<\/tr>\n
12<\/td>\n2. Normative references
3. Definitions
4. Usual service conditions
5. Ratings and characteristics
5.1 Kilovolt-ampere ratings <\/td>\n<\/tr>\n
13<\/td>\n5.2 Kilovolt-ampere and voltage ratings
5.3 Taps
5.4 Insulation levels <\/td>\n<\/tr>\n
14<\/td>\n5.5 Angular displacement and terminal markings <\/td>\n<\/tr>\n
15<\/td>\n5.6 Percent impedance voltage
6. Construction
6.1 Insulation system
6.2 Accessory location <\/td>\n<\/tr>\n
16<\/td>\n6.3 Nameplate
6.4 Transformer connections <\/td>\n<\/tr>\n
17<\/td>\n6.5 Tap changing
6.6 Lifting, jacking, and moving facilities <\/td>\n<\/tr>\n
18<\/td>\n6.7 Ground pad <\/td>\n<\/tr>\n
19<\/td>\n6.8 Transformer enclosure <\/td>\n<\/tr>\n
20<\/td>\n7. Routine tests
8. Tolerances
9. Other ratings and characteristics
9.1 Forced-air-cooled ratings <\/td>\n<\/tr>\n
21<\/td>\n9.2 40 \u00b0C average ambient temperature conditions
9.3 Other winding temperature rises
9.4 Other temperature class insulation systems <\/td>\n<\/tr>\n
22<\/td>\n9.5 Other high-voltage ratings and connections <\/td>\n<\/tr>\n
23<\/td>\n9.6 Y\u2013Y connected transformers <\/td>\n<\/tr>\n
25<\/td>\n9.7 Increased neutral insulation
9.8 Other basic lightning impulse insulation levels <\/td>\n<\/tr>\n
26<\/td>\n10. Other construction
10.1 High-voltage connection arrangements
10.2 Low-voltage connection arrangements
10.3 Surge arresters <\/td>\n<\/tr>\n
27<\/td>\n10.4 Unit substation application
10.5 Temperature devices
10.6 Forced-air cooling
10.7 Provision for future forced-air cooling <\/td>\n<\/tr>\n
28<\/td>\n10.8 Space heaters
10.9 Current transformers (or provision for their addition in the future)
10.10 Terminal blocks
10.11 Contacts
11. Other tests <\/td>\n<\/tr>\n
29<\/td>\nAnnex A (informative) Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard for Ventilated Dry- Type Power Transformers, 501 kVA and Larger, Three-Phase, with High- Voltage 601 V to 34 500 V; Low- Voltage 208Y\/120 V to 4160 V- General Requirements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2009<\/td>\n29<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":81770,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-81769","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\/81769","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\/81770"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=81769"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=81769"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=81769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}