Project Details
Three-phase and single-phase AC synchronous and induction electric machines in ratings 0.18 kW (1/4 hp) and larger are
covered in this guide. Primary emphasis is on the use of open or nonexplosionproof or nonflameproof enclosed machines in Zone 2 and
Class I, Division 2 locations as covered in National Electrical Code(R) (NEC(R)) (NFPA 70-2020) and Canadian Electrical Code(R) (CE
code(R)) (CSA C22.1-2018 Safety Standard for Electrical
Installations) as applicable. Surface temperature test methods and sine
wave and non-sine wave applications are covered. Precautions against
excessive surface temperatures and sparking are included. To mitigate
hot surface temperatures and sparking, this document provides
guidance for selecting, operating, and maintaining machines in Zone 2
and Class I, Division 2 locations. This guide does not cover ac wound
rotor machines and dc electric machines. Machines installed in
locations other than Zone 2 and Class I, Division 2 as covered in NFPA 70-2020 or CSA C22.1 - 2018 are not covered in this guide.
This document is not a specification and is not intended to be used as a
specification for purchasing electric machines.
The voltage breaks in this document are 1000 V and less, and over
1000 V.
Standards Committee | |
PAR Approval |
2019-09-05
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PARs |
Additional Resources Details
Historical Base Standard |
Working Group Details
Working Group |
1349_WG - Machines in Hazardous Locations Working Group
|
Standards Committee | |
Society | |
IEEE Program Manager | |
Existing Standards |
Three-phase and single-phase AC synchronous and induction electric motors in ratings 0.18 kW (1/4 hp) and larger are covered in this guide. Primary emphasis is on the use of open or nonexplosionproof or nonflameproof enclosed motors in Class I, Division 2 and Class I, Zone 2 locations as covered in NFPA 70-2011. Surface temperature test methods and sine wave and non-sine wave applications are covered. Precautions against excessive surface temperatures and sparking are included. To mitigate hot surface temperatures and sparking, this document provides guidance for selecting, operating, and maintaining motors in Class I, Division 2 and Class I, Zone 2 locations. This guide does not cover AC wound rotor motors and DC electric motors. Motors installed in locations other than Class I, Division 2 and Class I, Zone 2 as covered in NFPA 70-2011 are not covered in this guide. This document is not a specification and is not intended to be used as a specification for purchasing motors. The voltage breaks in this document are 1000 V and less, and over 1000 V.
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