{"id":396931,"date":"2024-10-20T04:27:24","date_gmt":"2024-10-20T04:27:24","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-12-20-2005-2\/"},"modified":"2024-10-26T08:14:51","modified_gmt":"2024-10-26T08:14:51","slug":"ieee-c57-12-20-2005-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-12-20-2005-2\/","title":{"rendered":"IEEE C57.12.20-2005"},"content":{"rendered":"

Revision Standard – Superseded. This standard covers certain electrical, dimensional, and mechanical characteristics and safety features of single- and three-phase, 60 Hz, mineral-oil-immersed, self-cooled, overhead-type distribution transformers 500 kVA and smaller, high voltages 34 500 V and below and low voltages 7970\/13 800Y V and below.<\/p>\n

PDF Catalog<\/h4>\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>\nFront Cover
\n <\/td>\n<\/tr>\n
3<\/td>\nIEEE Standard for Overhead-Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34 500 V and Below; Low Voltage, 7970\/13 800Y V and Below <\/td>\n<\/tr>\n
5<\/td>\nIntroduction <\/td>\n<\/tr>\n
6<\/td>\nNotice to users
Errata
Interpretations
Patents
Participants <\/td>\n<\/tr>\n
8<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\nIEEE Standard for Overhead-Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34 500 V and Below; Low Voltage, 7970\/13 800Y V and Below
1. Overview
1.1 Scope
1.2 Purpose
2. Normative references <\/td>\n<\/tr>\n
10<\/td>\n3. Definitions
4. Ratings
4.1 Kilovolt-ampere ratings
4.2 Voltage ratings and tap ratings <\/td>\n<\/tr>\n
11<\/td>\n5. Basic lightning impulse insulation levels and dielectric tes
5.1 Basic lightning impulse
5.2 Dielectric test
6. Tests
6.1 General
6.2 Dielectric tests
7. Construction
7.1 Bushings and Terminals <\/td>\n<\/tr>\n
12<\/td>\n7.2 Accessory equipment <\/td>\n<\/tr>\n
15<\/td>\n7.3 Polarity, terminal markings, and angular displacement <\/td>\n<\/tr>\n
16<\/td>\n7.4 Oil preservation
7.5 Tanks <\/td>\n<\/tr>\n
18<\/td>\n8. Storage and installation
8.1 Storage
8.2 Installation
9. Design tests for fault current capability of overhead distri
9.1 Objective
9.2 General requirements <\/td>\n<\/tr>\n
19<\/td>\n9.3 Tests
9.4 Test number 1\u2014an arcing fault in an enclosure
9.5 Test number 2\u2014for enclosures with internal fusible elements <\/td>\n<\/tr>\n
20<\/td>\n9.6 Test results <\/td>\n<\/tr>\n
42<\/td>\nAnnex A (informative) Auxiliary Mounting Devices <\/td>\n<\/tr>\n
48<\/td>\nAnnex B (informative) Bibliography
\n <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Standard for Overhead Type Distribution Transformers, 500 kVA and Smaller: High Voltage, 34500 Volts and Below; Low Voltage, 7970\/13800Y Volts and Below<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2005<\/td>\n48<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":396934,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-396931","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\/396931","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\/396934"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=396931"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=396931"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=396931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}