{"id":400039,"date":"2024-10-20T04:47:00","date_gmt":"2024-10-20T04:47:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-841-2021\/"},"modified":"2024-10-26T08:34:58","modified_gmt":"2024-10-26T08:34:58","slug":"ieee-841-2021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-841-2021\/","title":{"rendered":"IEEE 841-2021"},"content":{"rendered":"

Revision Standard – Active. This standard applies to premium-efficiency totally enclosed fan-cooled (TEFC) and totally enclosed nonventilated (TENV), horizontal and vertical, single-speed, squirrel cage polyphase induction motors, 0.75 kW to 370 kW (1 hp to 500 hp), and up to 4000 V nominal, in National Electrical Manufacturers Association (NEMA) frame sizes 143T and larger, for petroleum, chemical, and other severe-duty applications (commonly referred to as premium-efficiency severe-duty motors). Excluded from the scope of this standard are motors with sleeve bearings and additional specific features required for explosion-proof motors.<\/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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEEE Std 841\u2122-2021 Front cover <\/td>\n<\/tr>\n
2<\/td>\nTitle page <\/td>\n<\/tr>\n
4<\/td>\nImportant Notices and Disclaimers Concerning IEEE Standards Documents <\/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>\n1.\u2002Overview
1.1\u2002Scope
1.2\u2002Purpose
1.3\u2002Word usage <\/td>\n<\/tr>\n
14<\/td>\n2.\u2002Normative references <\/td>\n<\/tr>\n
15<\/td>\n3.\u2002Definitions, acronyms, and abbreviations
3.1\u2002Definitions
3.2\u2002Acronyms and abbreviations
4.\u2002Service conditions
4.1\u2002Usual service conditions <\/td>\n<\/tr>\n
16<\/td>\n4.2\u2002Unusual service conditions
5.\u2002Ratings
5.1\u2002Basis of rating <\/td>\n<\/tr>\n
17<\/td>\n5.2\u2002Frame assignments
5.3\u2002Voltage and frequency ratings
5.4\u2002Synchronous speed ratings
5.5\u2002Enclosures
6.\u2002Electrical performance
6.1\u2002General
6.2\u2002Motor designs and starting characteristics
6.3\u2002Power supply variations <\/td>\n<\/tr>\n
18<\/td>\n6.4\u2002Insulation system and temperature rise <\/td>\n<\/tr>\n
19<\/td>\n7.\u2002Mechanical features
7.1\u2002Bearings and lubrication <\/td>\n<\/tr>\n
20<\/td>\n7.2\u2002Rotor and shaft <\/td>\n<\/tr>\n
21<\/td>\n7.3\u2002Frames, endshields, and fan covers
7.4\u2002Fans
7.5\u2002Main terminal boxes and terminal leads <\/td>\n<\/tr>\n
22<\/td>\n7.6\u2002Drains <\/td>\n<\/tr>\n
23<\/td>\n7.7\u2002Hardware
7.8\u2002Airborne sound
7.9\u2002Vibration <\/td>\n<\/tr>\n
24<\/td>\n8.\u2002Corrosion-resistant treatment
8.1\u2002Frame paint
8.2\u2002Assembly
8.3\u2002Exposed internal stator, rotor, and shaft surfaces
8.4\u2002Miscellaneous
9.\u2002Efficiency <\/td>\n<\/tr>\n
25<\/td>\n10.\u2002Tests
10.1\u2002Test methods
10.2\u2002Factory tests
10.3\u2002Additional tests
10.4\u2002Prototype tests <\/td>\n<\/tr>\n
26<\/td>\n10.5\u2002Test information supplied with motor
11.\u2002Nameplate
11.1\u2002Nameplate marking <\/td>\n<\/tr>\n
27<\/td>\n11.2\u2002Nameplate material
12.\u2002Space heaters\u2014requirements
13.\u2002Data exchange\u2014user and manufacturer
14.\u2002Core technical features and allowable options for an \u201cIEEE Std 841-2021\u201d motor and options that exclude a motor from referencing the standard
14.1\u2002Introduction <\/td>\n<\/tr>\n
28<\/td>\n14.2\u2002Core technical features of an \u201cIEEE Std 841-2021\u201d motor
14.3\u2002Allowable options for an \u201cIEEE Std 841-2021\u201d motor <\/td>\n<\/tr>\n
29<\/td>\n14.4\u2002Allowable options for an \u201cIEEE Std 841-2021 Features\u201d motor <\/td>\n<\/tr>\n
30<\/td>\n14.5\u2002Options that do not allow a motor to reference IEEE\u00a0841 in any way <\/td>\n<\/tr>\n
31<\/td>\nAnnex\u00a0A (informative) Motor datasheet example <\/td>\n<\/tr>\n
32<\/td>\nAnnex\u00a0B (informative) ASD motor applications and considerations
B.1\u2002Introduction
B.2\u2002ASD considerations for all applications <\/td>\n<\/tr>\n
33<\/td>\nB.3\u2002Uncommon adjustable speed drive (ASD) applications
B.4\u2002Practices frequently used to mitigate surface temperature concerns for ASD applications
B.5\u2002Practices used to mitigate sparking in ASD applications and improve motor reliability <\/td>\n<\/tr>\n
35<\/td>\nAnnex\u00a0C (informative) Bibliography <\/td>\n<\/tr>\n
36<\/td>\nBack cover <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Standard for Petroleum and Chemical Industry–Premium-Efficiency, Severe-Duty, Totally Enclosed Squirrel Cage Induction Motors from 0.75 kW to 370 kW (1 hp to 500 hp)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2021<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":400041,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-400039","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\/400039","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\/400041"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=400039"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=400039"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=400039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}