{"id":80689,"date":"2024-10-17T18:47:02","date_gmt":"2024-10-17T18:47:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c57-105-1978\/"},"modified":"2024-10-24T19:44:23","modified_gmt":"2024-10-24T19:44:23","slug":"ieee-c57-105-1978","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c57-105-1978\/","title":{"rendered":"IEEE C57.105 1978"},"content":{"rendered":"

New IEEE Standard – Active. Reaffirmed 2008. The characteristics of the various transformer connections and possible operating problems under normal or abnormal conditions are treated for three-phase distribution systems. These systems are characterized by primary voltages up to and including 34.5 kV, usually have a preponderance of connected transformers with low-voltage windings below 1000 V, and furnish electric service to consumers. All combinations of Delta and Y, grounded and ungrounded, T connected, zigzag, and certain special connections are considered. Only two-winding transformers are included. Phasing procedures and loading practices are not covered.<\/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>\nTitle Page <\/td>\n<\/tr>\n
3<\/td>\nIntroduction
Participants <\/td>\n<\/tr>\n
5<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\n1. Scope
2. Electrical Connections
2.1 Primary and Secondary Systems <\/td>\n<\/tr>\n
8<\/td>\n2.2 Delta and Y Connections <\/td>\n<\/tr>\n
9<\/td>\n2.3 Zigzag-Connected Winding <\/td>\n<\/tr>\n
11<\/td>\n2.4 T-T Connections
2.5 Terminal Markings, Phase Relations, and Paralleling <\/td>\n<\/tr>\n
15<\/td>\n2.6 Connection of the Neutral
3. Magnetic Circuits
3.1 General Transformer Design <\/td>\n<\/tr>\n
16<\/td>\n3.2 3-Phase Transformer Core Configuration <\/td>\n<\/tr>\n
18<\/td>\n3.3 Magnetic Circuit Effects on 3-Phase Transformer Behavior <\/td>\n<\/tr>\n
19<\/td>\n4. Harmonic Currents and Voltages
4.1 Exciting Current Harmonics
4.2 Harmonic Generation <\/td>\n<\/tr>\n
20<\/td>\n4.3 Flow on 3-Phase System <\/td>\n<\/tr>\n
21<\/td>\n4.4 Telephone Noise
5. Primary Faults
5.1 Types and Clearing of Faults
5.2 Ground Faults <\/td>\n<\/tr>\n
22<\/td>\n5.3 Open Conductor Faults <\/td>\n<\/tr>\n
23<\/td>\n6. Unbalanced Loads and Secondary Ground Faults
6.1 Phase-to-Neutral Loads <\/td>\n<\/tr>\n
24<\/td>\n6.2 Phase-to-Phase Loads <\/td>\n<\/tr>\n
25<\/td>\n6.3 Secondary Faults <\/td>\n<\/tr>\n
26<\/td>\n7. Ferroresonance
7.1 Qualitative Description <\/td>\n<\/tr>\n
28<\/td>\n7.2 Transformer Connections Highly Susceptible to Ferroresonance <\/td>\n<\/tr>\n
30<\/td>\n7.3 Measures to Minimize the Probability of Ferroresonance with Ungrounded Primary Connection <\/td>\n<\/tr>\n
31<\/td>\n7.4 Transformer Connections Least Susceptible to Ferroresonance <\/td>\n<\/tr>\n
32<\/td>\n7.5 Measures to Minimize the Probability of Ferroresonance with Grounded Primary Connections <\/td>\n<\/tr>\n
33<\/td>\n7.6 Bibliography
8. Unsymmetrical Banks and Special Considerations
8.1 T-Connected
8.2 Circulating Delta Currents <\/td>\n<\/tr>\n
34<\/td>\n8.3 Grounded Delta Secondary <\/td>\n<\/tr>\n
36<\/td>\n8.4 Open-Delta Secondary <\/td>\n<\/tr>\n
37<\/td>\n8.5 Open-Y primary to a 4-Wire 208 V Service
8.6 Effect on Voltage Balance
9. References and Bibliography
9.1 General
9.2 Ferroresonance <\/td>\n<\/tr>\n
39<\/td>\n9.3 Special Connections <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Guide for Application of Transformer Connections in Three-Phase Distribution Systems<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n1978<\/td>\n39<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":80690,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-80689","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\/80689","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\/80690"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=80689"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=80689"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=80689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}