{"id":437948,"date":"2024-10-20T08:01:30","date_gmt":"2024-10-20T08:01:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-131-2012-4\/"},"modified":"2024-10-26T15:05:22","modified_gmt":"2024-10-26T15:05:22","slug":"ieee-c57-131-2012-4","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-131-2012-4\/","title":{"rendered":"IEEE C57.131-2012"},"content":{"rendered":"

Revision Standard – Inactive-Reserved. This standard covers electrical and mechanical performance and test requirements for tap changers installed in voltage regulating power and distribution transformers of all voltage and kVA ratings. It covers load tap changers (LTCs), also known as on-load tap changers (OLTCs), which can change taps while the transformer is energized and carrying load; and it covers de-energized tap changers (DETCs), also known as off-circuit tap changers, which may be operated only while the transformer is not energized. For load tap changers, this standard covers both resistor and reactor types. It also covers certain aspects of the attendant tap changer motor-drive mechanism. It does not cover the tap changer control system (manual or automatic).<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std IEEE Std C57.131-2012 Front cover <\/td>\n<\/tr>\n
3<\/td>\nTitle page <\/td>\n<\/tr>\n
6<\/td>\nNotice to users
Laws and regulations
Copyrights
Updating of IEEE documents
Errata
Patents <\/td>\n<\/tr>\n
8<\/td>\nParticipants <\/td>\n<\/tr>\n
10<\/td>\nIntroduction <\/td>\n<\/tr>\n
11<\/td>\nContents <\/td>\n<\/tr>\n
13<\/td>\nImportant notice
1. Overview
1.1 Scope
1.2 Application <\/td>\n<\/tr>\n
14<\/td>\n2. Normative references
3. Definitions <\/td>\n<\/tr>\n
17<\/td>\n4. Service conditions
4.1 Temperature of tap changer environment <\/td>\n<\/tr>\n
18<\/td>\n4.2 Temperature of tap changer motor-drive mechanism environment
4.3 Overload conditions <\/td>\n<\/tr>\n
19<\/td>\n5. Requirements for LTCs
5.1 Rating <\/td>\n<\/tr>\n
20<\/td>\n5.2 Design tests for LTCs <\/td>\n<\/tr>\n
32<\/td>\n5.3 Routine tests for LTCs <\/td>\n<\/tr>\n
33<\/td>\n5.4 LTC test report
6. Requirements for motor-drive mechanisms for load tap changers
6.1 Permissible variation of auxiliary supply <\/td>\n<\/tr>\n
34<\/td>\n6.2 Design tests for motor-drive mechanism
6.3 Routine tests for motor-drive mechanism <\/td>\n<\/tr>\n
35<\/td>\n6.4 Test report for motor-drive mechanism
7. Requirements for de-energized tap changers (DETCs)
7.1 General requirements <\/td>\n<\/tr>\n
36<\/td>\n7.2 Design tests for DETCs <\/td>\n<\/tr>\n
40<\/td>\n7.3 Routine tests
8. Requirements for motor-drive mechanisms for DETCs
8.1 General requirements
8.2 Permissible variation of auxiliary supply <\/td>\n<\/tr>\n
41<\/td>\n8.3 Design tests for motor-drive mechanism
8.4 Routine tests for motor-drive mechanism <\/td>\n<\/tr>\n
42<\/td>\n8.5 Test report for motor-drive mechanism
9. Nameplate
9.1 Load (on-load) and de-energized (off-circuit) tap changers <\/td>\n<\/tr>\n
43<\/td>\n9.2 Motor-drive mechanisms
10. Manufacturer\u2019s operating instructions <\/td>\n<\/tr>\n
44<\/td>\nAnnex A (informative) Switching duty relating to load tap changers (LTCs) with resistor transition <\/td>\n<\/tr>\n
50<\/td>\nAnnex B (informative) Switching duty relating to load tap changers (LTCs) with reactor transition <\/td>\n<\/tr>\n
61<\/td>\nAnnex C (informative) Method of determining the equivalent temperature of the transition resistorusing power pulse currents <\/td>\n<\/tr>\n
62<\/td>\nAnnex D (informative) Simulated circuits for service duty and breaking capacity tests for resistance-type LTCs <\/td>\n<\/tr>\n
66<\/td>\nAnnex E (informative) Tutorial information on LTC application <\/td>\n<\/tr>\n
73<\/td>\nAnnex F (informative) Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard Requirements for Tap Changers (Superseded Redline)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2012<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":437956,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-437948","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\/437948","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\/437956"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=437948"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=437948"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=437948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}