Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523)最新文献

Medium voltage reduced voltage autotransformer starter failures $explaining the unexplained 中压降压自耦变压器起动器故障$解释原因不明

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-11-15 DOI: 10.1109/PCICON.2004.1352803

L.B. Farr

引用次数: 5

A unique paper machine drive system revamp 独特的纸机驱动系统改造

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338360

D.D. West, D. Honaker, K. Barry

引用次数: 1

A review of the design considerations of replacement drive system installation 更换传动系统安装的设计考虑

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338358

W. Hopper

引用次数: 0

Direct drive induction motors 直接驱动感应电动机

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338362

S. Evon, R. Schiferl

引用次数: 6

Understanding arc flash hazards 了解电弧闪光危害

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338372

K. Lippert, D. M. Colaberardino, C. Kimblin

{"title":"Understanding arc flash hazards","authors":"K. Lippert, D. M. Colaberardino, C. Kimblin","doi":"10.1109/PAPCON.2004.1338372","DOIUrl":"https://doi.org/10.1109/PAPCON.2004.1338372","url":null,"abstract":"The purpose of this paper is to clarify the use of the recently published IEEE 1584-2002 - Guide for Performing Arc-Flash Hazard Calculations. The paper also discusses the reduction of arc flash hazards by the current limitation of molded case circuit breakers. Understanding arc flash hazards is a critical element in order to reduce the risk of electrical accidents and personal injuries. The guide contains formulas to numerically quantify the arc flash energy and includes an Excel spreadsheet \"arc-flash hazard calculator.\" This spreadsheet uses the formulas stated in the guide to automatically perform the calculations to obtain incident energy, and arc flash hazard distances. The present paper provides an expanded explanation of the guide/calculator with the objective of simplification. The paper also approaches possible methods for including the impact of molded case circuit breaker current limitation into the calculation methods. The subject of breaker clearing times in the presence of arcing faults will also be addressed. The paper concludes with a discussion of circuit breaker applications for arc flash reduction.","PeriodicalId":189773,"journal":{"name":"Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129759740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Safety aspects of permanent magnet motors in paper machine applications 纸机用永磁电机的安全问题

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338361

T. Huhtanen, K. Erkkila

{"title":"Safety aspects of permanent magnet motors in paper machine applications","authors":"T. Huhtanen, K. Erkkila","doi":"10.1109/PAPCON.2004.1338361","DOIUrl":"https://doi.org/10.1109/PAPCON.2004.1338361","url":null,"abstract":"The worldwide pulp & paper industry has significantly increased its use of 3-phase AC permanent magnet motors in recent years. Many precision applications for squirrel cage induction motors can now use permanent magnet motors with improved project costs and application performance. The different characteristics between the newer permanent magnet motor compared to the common squirrel cage induction motor necessitate a discussion of the safety implications when implementing this change in motor technology. The primary reason for use of a permanent magnet motor is to eliminate the negatives associated with a gearbox. This reduces the mechanical drive between the AC drive motor and paper machine section to one coupling. Because of their built-in field, permanent magnet motors generate voltage onto their stator terminals whenever the rotor is turned. Maintenance work such as roll inspection and cleaning, or accidental events which turn the rotor, can cause this condition. This condition also exists in the event of an operator initiated coast stop or during any other coasting stop such as a power failure or upstream trip. The generated voltage can be hazardous to those servicing the motor and its associated electric drive. This paper presents configurations and procedures for achieving optimal safety when using permanent magnet motors. At the conclusion of this paper, optimal safety configurations are offered.","PeriodicalId":189773,"journal":{"name":"Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115899706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Field commissioning and maintenance of small power liquid filled transformers 小型电力充液变压器的现场调试和维护

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338381

T. Nunn, D. Cherry

引用次数: 1

Optimizing NEMA TP 1 transformers for process industry substation service 优化NEMA TP - 1变压器为过程工业变电站服务

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338377

S. Merritt, S. Chaitkin

引用次数: 0

Protection, control, reliability and diagnostic improvements via single-processor control of circuit breakers in low voltage switchgear 通过单处理器控制低压开关柜断路器的保护、控制、可靠性和诊断改进

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338375

M. Valdes, I. Purkayastha, T. Papallo

{"title":"Protection, control, reliability and diagnostic improvements via single-processor control of circuit breakers in low voltage switchgear","authors":"M. Valdes, I. Purkayastha, T. Papallo","doi":"10.1109/PAPCON.2004.1338375","DOIUrl":"https://doi.org/10.1109/PAPCON.2004.1338375","url":null,"abstract":"Protection of low-voltage circuits has been a key area of innovation and continuous improvement since the invention of electricity. In the current state of the art, fuses and circuit breakers protect individual circuits. These devices, in turn, use many different kinds of trip mechanisms, operating in various modes that require sensing the current that travels through the circuits. However these devices, largely, operate separately and independently from each other. Communication networks and external relays are sometimes used to enhance selectivity and provide better protection that the independent over-current devices can provide. In this paper, the authors explore a protection-and-control architecture based on a single processor that provides all the protection and control functions for a line up of low-voltage switchgear. How this method of protection changes the paradigm from individual circuit protection to system protection, while cost-effectively and significantly increasing system reliability and protection is discussed.","PeriodicalId":189773,"journal":{"name":"Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121917899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of IEEE 841 1994 to 2001 - where might the standard go on the next revision cycle? IEEE 841 1994与2001的比较——下一个修订周期该标准将走向何方?

Conference Record of 2004 Annual Pulp and Paper Industry Technical Conference (IEEE Cat. No.04CH37523) Pub Date : 2004-10-08 DOI: 10.1109/PAPCON.2004.1338355

J. Holmquist, J. Malinowski

引用次数: 0