GB/T 12667-1990
Replaced
MT/T 1261-2025
Active
Industry standards-Coal
MT/T 1261-2025 Minimum allowable value of energy efficiency and energy efficiency grades for flame-proof three-phase asynchronous motor for coal mine
MT/T 1261-2025 Minimum allowable value of energy efficiency and energy efficiency grades for flame-proof three-phase asynchronous motor for coal mine
Price:
$ 29.00
Basic Information
Standard Code:
MT/T 1261-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Technical management
ICS Name:
Electric motor
Publish Date:
2025-06-30
Implement Date:
2025-12-30
Pages:
12 pages
Scope
This document specifies the technical requirements and test methods for explosion-proof three-phase asynchronous motors used in coal mines (hereinafter referred to as "motors").
This document is applicable to general-purpose motors used in coal mines with a rated voltage of 3,300 V or less, powered by 50 Hz three-phase AC power, with 4 poles, N design, and continuous operation.
This document is not applicable to special-purpose motors used in coal mining machines, tunneling machines, and other equipment.
Development Information
Referenced Standards
GB/T 755-2019 Rotating electrical machines—Rating and performance
GB/T 1032-2005 Test procedures for three-phase induction motors
GB/T 1032-2012 Test procedures for three-phase induction motors
GB/T 1032-2023 Test methods for three-phase asynchronous motors
GB 18613-2020 Minimum allowable values of energy efficiency and values of efficiency grades for motors
Related Standards
GB/T 12974-1991
Replaced
GB/T 12974-1991 General specification for a.c. lift motors
GB/T 13138-1991
Replaced
GB/T 13138-1991 Synchros General specification for
GB/T 13139-1991
Replaced
GB/T 13139-1991 Hysteresis synchronous motors General specification for
GB/T 13500-1992
abolished_transferred
GB/T 13500-1992 Three phase asynchronous motors for hermetic refrigeration compressors—General specifications
GB/T 13501-1992
Replaced