IEEE DRAFT 741 : D1 2006

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CRITERIA FOR THE PROTECTION OF CLASS 1E POWER SYSTEMS AND EQUIPMENT IN NUCLEAR POWER GENERATING STATIONS

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Withdrawn date: 18-10-2023

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Published date: 12-01-2013

Publisher: Institute of Electrical & Electronics Engineers

Table of Contents - (Show below) - (Hide below)

1 Scope
2 Normative references
3 Definitions
4 General design criteria
5 Principal design criteria and requirements
  5.1 AC power distribution systems
  5.2 DC power system
  5.3 Instrumentation and control power system
  5.4 Primary containment electrical penetration assemblies
  5.5 Valve actuator motors (direct gear driven)
6 Testing and surveillance
  6.1 Device testing
  6.2 Preoperational tests
  6.3 Surveillance
Annex A (informative) Illustration of concepts associated with
        degraded voltage protection
      A.1 Purpose
      A.2 Discussion
      A.3 Degraded voltage relay voltage settings
      A.4 Degraded voltage relay time delay settings
      A.5 Loss of voltage relay settings
      A.6 High voltage conditions
      A.7 Off-Site system voltage considerations
      A.8 Tolerances
      A.9 Bibliography
Annex B (informative) Guidelines for selection of overload
        protection for valve actuator motor circuits
      B.1 Purpose
      B.2 Definitions
      B.3 Discussion
      B.4 Overload protection devices
      B.5 Typical procedures for selection of TORs
      B.6 Bibliography
Annex C (informative) Auxiliary system automatic bus transfer -
        protection concerns
      C.1 Purpose
      C.2 Discussion
      C.3 Bus transfer analysis
      C.4 Bus transfer protection issues
      C.5 Implementation of a bus transfer scheme using dynamic
          modeling
      C.6 Bibliography
Annex D (informative) Use of high-speed magnetic circuit
        breakers for special applications
      D.1 Purpose
      D.2 Discussion
Annex E (informative) Bibliography

Abstract - (Show below) - (Hide below)

Presents criteria that establish protection requirements for Class 1E power systems and equipment. It specifies the purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter than that required for operator action. It includes testing and surveillance requirements.

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Comment Closes On
Document Type	Draft
ISBN
Pages
Published
Publisher	Institute of Electrical & Electronics Engineers
Status	Withdrawn
Superseded By	IEEE 741-2007

Standards Referencing This Book - (Show below) - (Hide below)

IEEE C37.91-2008 REDLINE	IEEE Guide for Protecting Power Transformers
IEEE C62.41-1991	IEEE Recommended Practice for Surge Voltages in Low-Voltage AC Power Circuits
IEEE 487-2015	IEEE Standard for the Electrical Protection of Communications Facilities Serving Electric Supply Locations -- General Considerations
ISA 67.04.01 : 2006	SETPOINTS FOR NUCLEAR SAFETY-RELATED INSTRUMENTATION
IEEE 242-2001	IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book)
IEEE 142 : 2007	GROUNDING OF INDUSTRIAL AND COMMERCIAL POWER SYSTEMS
IEEE 384-2008 REDLINE	IEEE Standard Criteria for Independence of Class 1E Equipment and Circuits
IEEE C62.92.3-2012	IEEE Guide for the Application of Neutral Grounding in Electrical Utility Systems, Part III -Generator Auxiliary Systems
NEMA ICS 2:2008	Controllers, Contactors and Overload Relays Rated 600 V
IEEE 765-2012	IEEE Standard for Preferred Power Supply (PPS) for Nuclear Power Generating Stations (NPGS)
IEEE 141 : 1993	IEEE Recommended Practice for Electric Power Distribution for Industrial Plants
IEEE C37.96-2012	IEEE Guide for AC Motor Protection
IEEE 338-2012	IEEE Standard for Criteria for the Periodic Surveillance Testing of Nuclear Power Generating Station Safety
IEEE 308-2012 REDLINE	IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations
IEEE 317-2013 REDLINE	IEEE Standard for Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating Stations
IEEE 603-2009 REDLINE	IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations
IEEE 1290-2015 REDLINE	IEEE Guide for Motor-Operated Valve (MOV) Motor Application, Protection, Control, and Testing in Nuclear Power-Generating Stations

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