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NEMA ICS 10.2 : 2005

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

INDUSTRIAL CONTROL AND SYSTEMS - PART 2: STATIC AC TRANSFER EQUIPMENT
Superseded date

01-19-2021

Published date

12-06-2012

FOREWORD
Part 2 - STATIC AC TRANSFER EQUIPMENT
1 SCOPE
   1.1 General
   1.2 Normative references
2 DEFINITIONS
   2.1 Transfer Equipment
   2.2 Operation of static transfer equipment
3 CLASSIFICATIONS
4 CHARACTERISTICS AND RATINGS
   4.1 Rated and Limiting Values for the Main (Power) Circuit
        4.1.1 System Voltage Ratings
        4.1.2 Continuous Current Rating
        4.1.3 Rating Based on Load Characteristics
        4.1.4 Interrupting Rating
        4.1.5 Motor Starter Rating
        4.1.6 Withstand and Closing Ratings
        4.1.7 Overcurrent Protection
5 PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION
   5.1 Markings
        5.1.1 Transfer Equipment
        5.1.2 Bypass Isolation Switch Equipment
        5.1.3 Control Circuits
   5.2 Maintenance of Transfer Equipment
6 SERVICE AND STORAGE CONDITIONS
7 CONSTRUCTION
   7.1 Spacings
   7.2 Test Switch
   7.3 Interlocks and Protective Circuits
        7.3.1 Protection from Cross-Connection
        7.3.2 Bypass Isolation Switch Interlock
   7.4 Service Equipment
   7.5 Emergency Power Circuit Service
   7.6 Control Circuits
8 PERFORMANCE REQUIREMENTS
   8.1 Performance Requirements
        8.1.1 Control Circuits
        8.1.2 Ground-Fault Protection
        8.1.3 Undervoltage Monitoring Characteristics
   8.2 Design Tests
        8.2.1 Required Testing
        8.2.2 Optional Performance Verification
9 APPLICATION
   9.1 AC Transfer Equipment Specification
   9.2 Power Quality
   9.3 Motor Transfer
   9.4 Features for Particular Applications
   9.5 Considerations for Non-Linear Load Applications
   9.6 Graphical Symbol for Static Transfer Equipment
ANNEX A Non-Linear loads
   A.1 General
   A.2 Non-Linear Electrical Load
   A.3 Crest Factor (CF) of a System
ANNEX B Short Time Rating
ANNEX C Neutral Conductors in Power Transfer Systems
   C.1 Separately Derived Sources
   C.2 Non-Separately Derived Sources

Applies to static automatic and static non-automatic transfer equipment without cross-connection of sources during transfer or retransfer, with or without bypass isolation switches rated 600 volts AC or less, not exceeding 6000 amps, for use on single-phase and polyphase AC circuits.

DocumentType
Standard
PublisherName
National Electrical Manufacturers Association
Status
Superseded
SupersededBy

NEMA ICS 20:2009 (R2015) Informational Guide to Electrical Industrial Topics
NEMA ICS 3.1 : 2009(R2014) GUIDE FOR THE APPLICATION, HANDLING, STORAGE, INSTALLATION, AND MAINTENANCE OF MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTERS
IEEE 1662-2008 IEEE Guide for the Design and Application of Power Electronics in Electrical Power Systems on Ships
NEMA ICS 6-1993 (R2006) Industrial Control and Systems: Enclosures
NEMA ICS 2:2008 Controllers, Contactors and Overload Relays Rated 600 V
EEE 602 : 2007 ELECTRIC SYSTEMS IN HEALTH CARE FACILITIES

NEMA MG 1 : 2016 MOTORS AND GENERATORS
NEMA ICS 1.3:1986 (R2001, R2009, R2015) Preventive Maintenance of Industrial Control and Systems Equipment
UL 869A:4ED 2006-11 Standard for Reference Standard for Service Equipment
UL 1008:8ED 2014-12 Transfer Switch Equipment
NFPA 99 : 2018 HEALTH CARE FACILITIES CODE
NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
NEMA ICS 1 : 2000(R2015) INDUSTRIAL CONTROL AND SYSTEMS: GENERAL REQUIREMENTS

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