{"id":146955,"date":"2024-10-19T08:37:25","date_gmt":"2024-10-19T08:37:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c37-74-2003\/"},"modified":"2024-10-25T00:53:41","modified_gmt":"2024-10-25T00:53:41","slug":"ieee-c37-74-2003","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c37-74-2003\/","title":{"rendered":"IEEE C37.74 2003"},"content":{"rendered":"

Revision Standard – Inactive – Superseded. Required definitions, ratings, procedures for performing design tests and production tests, and construction requirements for subsurface, vault, and pad-mounted load-interrupter switchgear and fused load-interrupter switchgear for ac systems up to 38 kV are specified<\/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\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nCover <\/td>\n<\/tr>\n
2<\/td>\nIEEE Standard Requirements for Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Swit <\/td>\n<\/tr>\n
5<\/td>\nIntroduction <\/td>\n<\/tr>\n
6<\/td>\nParticipants <\/td>\n<\/tr>\n
8<\/td>\nContents <\/td>\n<\/tr>\n
10<\/td>\n1. Scope
2. References <\/td>\n<\/tr>\n
12<\/td>\n3. Definitions <\/td>\n<\/tr>\n
13<\/td>\n4. Service conditions
4.1 Usual service conditions
4.2 Unusual service conditions <\/td>\n<\/tr>\n
14<\/td>\n4.2.1 Abnormal ambient temperatures
4.2.2 Altitudes above 1000 m
5. Ratings, required related capabilities, and test requirements
5.1 General
5.2 Rating information
5.2.1 Overall ratings <\/td>\n<\/tr>\n
16<\/td>\n5.2.2 Individual way ratings <\/td>\n<\/tr>\n
17<\/td>\n5.3 Continuous current ratings and related test requirements
5.3.1 Conditions of continuous current rating <\/td>\n<\/tr>\n
18<\/td>\n5.3.2 Limits of observable temperature rise
5.3.3 Application of fuses <\/td>\n<\/tr>\n
21<\/td>\n6. Design tests (type tests)
6.1 General <\/td>\n<\/tr>\n
22<\/td>\n6.1.1 Condition of DSG to be tested
6.1.2 Mounting of the DSG
6.1.3 Maintenance
6.1.4 Power-frequency
6.2 Tests on connectors and bushings used on DSG <\/td>\n<\/tr>\n
23<\/td>\n6.3 Testing of DSG as an entity
6.3.1 General
6.3.2 Test requirements
6.3.3 Condition of DSG following short-circuit tests <\/td>\n<\/tr>\n
24<\/td>\n6.4 Testing of switches installed in switched ways and fused-switch ways
6.4.1 General
6.4.2 Test sequence
6.4.3 Condition of switching device in switched and fused-switch ways after test sequence <\/td>\n<\/tr>\n
25<\/td>\n6.5 Testing of switching devices in fused-loadbreak ways
6.5.1 General <\/td>\n<\/tr>\n
26<\/td>\n6.5.2 Test sequence
6.5.3 Condition of switching device in fused-loadbreak ways after test sequence
6.6 Testing of fusing devices used in fused ways, fused-switch ways, or fused- loadbreak ways
6.6.1 General
6.6.2 Test sequence <\/td>\n<\/tr>\n
27<\/td>\n6.6.3 Interrupting performance of fusing devices in the DSG
6.7 Test methods
6.7.1 General
6.7.2 Dielectric tests <\/td>\n<\/tr>\n
30<\/td>\n6.7.3 Continuous current test <\/td>\n<\/tr>\n
31<\/td>\n6.7.4 Short-circuit withstand current tests <\/td>\n<\/tr>\n
34<\/td>\n6.7.5 Switching tests <\/td>\n<\/tr>\n
37<\/td>\n6.7.6 Thermal runaway test
6.7.7 Partial discharge (corona) tests <\/td>\n<\/tr>\n
38<\/td>\n6.7.8 DC withstand voltage test <\/td>\n<\/tr>\n
39<\/td>\n6.7.9 Sealed test pressure tests
6.7.10 Mechanical operations tests <\/td>\n<\/tr>\n
40<\/td>\n7. Production tests (routine tests)
7.1 Circuit resistance test
7.2 Power-frequency withstand voltage test
7.3 Partial discharge test
7.4 Leak test
7.5 Operating tests <\/td>\n<\/tr>\n
41<\/td>\n8. Field tests on units in service, including dc withstand tests on cables <\/td>\n<\/tr>\n
42<\/td>\n9. Construction requirements
9.1 Grounding provision
9.2 Manual operating provisions
9.3 Position indicators
9.4 Insulating medium quantity indicators
9.5 Drain and replacement provision <\/td>\n<\/tr>\n
43<\/td>\n9.6 Sampling and adding provisions
9.7 Parking stands
9.8 Bushings
9.9 Enclosure construction\u2014submersible and pad-mounted equipment
9.10 Enclosure construction\u2014pad-mounted equipment
9.11 Nameplate <\/td>\n<\/tr>\n
44<\/td>\n9.12 User identification plate <\/td>\n<\/tr>\n
45<\/td>\n10. Shipping requirements <\/td>\n<\/tr>\n
46<\/td>\nAnnex A\u2014(informative) X\/R ratios
A.1 Time constant (tcc) and X\/R ratio
A.2 Asymmetrical fault current <\/td>\n<\/tr>\n
48<\/td>\nAnnex B\u2014(informative) Altitude correction factors
B.1 Introduction
B.2 Altitude correction factors <\/td>\n<\/tr>\n
49<\/td>\nB.3 Examples for switchgear with 110 kV\/BIL already rated for 1000 m <\/td>\n<\/tr>\n
50<\/td>\nB.4 Examples for switchgear ratings based on 110 kV BIL withstand tests referred to sea level NTP… <\/td>\n<\/tr>\n
51<\/td>\nAnnex C\u2014(informative) Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard Requirements for Subsurface, Vault, and Padmounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems up to 38 kV<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2003<\/td>\n51<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":146956,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-146955","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\/146955","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\/146956"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=146955"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=146955"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=146955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}