What are the standards for explosion-proof motors? Please go ahead and add more

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Explosion-proof motors come with standards; when purchasing such motors, the manufacturer must possess an explosion-proof certification. They are primarily used in coal mines, the oil and gas industry, petrochemical industries, and the chemical industry. The rated voltage, rated current, power, and speed of explosion-proof motors are the same as those of ordinary motors; the only difference is that explosion-proof motors carry an explosion-proof marking: Ex – explosion protection type + equipment category + (gas group) + temperature group. The standards for explosion-proof motors were established jointly by the **General Administration of Quality Supervision, Inspection and Quarantine** and the **Standardization Administration of China**, through the issuance of the \"Energy Efficiency Limits and Grades for Small and Medium-Sized Three-Phase Asynchronous Motors.\" In the industry of explosion-proof motors, virtually all models in this category must comply with these standards. 　 1. The explosion-proof motor industry must strictly implement the standards for explosion-proof motors specified in the \"Energy Efficiency Limits and Grades for Small and Medium-Sized Three-Phase Asynchronous Motors.\" This helps China achieve its goals regarding energy conservation and emission reduction, making a significant contribution to environmental protection. The production licenses for explosion-proof electrical products will also be issued in accordance with the new standards for this industry ； 2. Although the energy efficiency values specified in standard GB18613-2012 represent an improvement compared to previous versions, all specifications of the YB3 series of flame-retardant three-phase asynchronous motors currently promoted in China meet the energy efficiency limits set out in GB18613-2012 for level 3; moreover, some of these specifications can even reach the energy efficiency targets specified for level 2 under the new standard. 3. Manufacturers of YB3 series motors are requested to accelerate production and market promotion efforts; at that time, relevant departments such as the **Explosion-Proof Electrical Products Quality Supervision and Inspection Center and the Department for Reviewing Production Licenses for Explosion-Proof Electrical Products will assist these companies in carrying out this task. 4. As of September 1, 2012, manufacturing enterprises or importers must apply energy efficiency labels to small and medium-sized three-phase asynchronous motors that are manufactured or imported, in accordance with the **standard GB 18613-2012 \"Energy Efficiency Limits and Grades for Small and Medium-Sized Three-Phase Asynchronous Motors\". The Energy Efficiency Labeling Management Center of the China National Institute of Standardization has already begun accepting applications in accordance with the new standards, and our company has completed the registration process. The newly registered segments are the same as before, but the testing method has been changed from the previous approach of calculating miscellaneous losses at 0.5% to Method B in GB/T 1032 – the loss analysis method for measuring input and output power. For models that have already been registered in accordance with the 2006 standards, a change registration is required; one test report must be provided for each segment of the change registration. 5. When purchasing an explosion-proof motor, check whether it comes with an explosion-proof certification from the manufacturer. Explosion-proof motors are mainly used in coal mines, oil and gas industries, petrochemical industries, and the chemical industry. The rated voltage, rated current, power, and speed of explosion-proof motors are the same as those of ordinary motors; the difference is that explosion-proof motors carry the “Explosion-proof” designation along with the mark Ex. The format for this designation is: Explosion-proof type + Equipment category + Gas group + Temperature group.

Current standards for explosion-proof motors (2012):
Standard number | Standard name
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GB/T23306-2009 | Technical specifications for flameproof three-phase asynchronous motors used in fuel dispensers (frame sizes 63–100)
JB/T8674-2007 | Technical specifications for YB2 series high-voltage flameproof three-phase asynchronous motors (frame sizes 355–560)
JB/T10685-2006 | Technical specifications for YBD2 series flameproof variable-pole multi-speed three-phase asynchronous motors (frame sizes 80–280)
JB/T6201-2006 | Technical specifications for YBDC2 series flameproof capacitor-start single-phase asynchronous motors (frame sizes 71–132)
JB/T7565.7-2006 | Technical specifications for flameproof three-phase asynchronous motors – Part 7: Flameproof three-phase asynchronous motors for pipeline pumps and outdoor pipeline pumps of YBGB2 and YBGB2-W series
GB20294-2006 | Safety requirements for flameproof hoisting, metallurgical, and shielded motors
JB/T7565.1-2004 | Technical specifications for flameproof three-phase asynchronous motors – Part 1: YB2 series flameproof three-phase asynchronous motors (frame sizes 63–355)
JB/T7565.3-2004 | Technical specifications for flameproof three-phase asynchronous motors – Part 3: Anti-corrosion and outdoor anti-corrosion flameproof three-phase asynchronous motors of YB2-F1, YB2-WF1, YB2-F2, YB2-WF2 series
JB/T7565.4-2004 | Technical specifications for flameproof three-phase asynchronous motors – Part 4: Flameproof (ExdⅡCT1–T4) three-phase asynchronous motors of YB2 series (frame sizes 63–355)
JB/T7565.5-2004 | Technical specifications for flameproof three-phase asynchronous motors – Part 5: Flameproof three-phase asynchronous motors for fans of YBF2 series (frame sizes 63–355)
MT902-2002 | Motors for electric rock bolt drills used in coal mines
JB/T10352-2002 | Technical specifications for YFB series dust-proof three-phase asynchronous motors (frame sizes 63–355)
JB/T10353.1-2002 | Technical specifications for flameproof motors used in fuel dispensers – Part 1: Flameproof three-phase asynchronous motors for fuel dispensers of YBJY series (frame sizes 63–100)
JB/T7565.2-2002 | Technical specifications for flameproof three-phase asynchronous motors – Part 2: Flameproof three-phase asynchronous motors of YB2-W, YB2-TH, YB2-THW, YB2-TA, YB2-TAW series
JB/T9593.1-2002 | Technical specifications for flameproof three-phase asynchronous motors used in coal mines – Part 1: Flameproof three-phase asynchronous motors for use underground in coal mines of YBK2 series (frame sizes 100–315)
JB/T50136.2-1999 | Method for evaluating reliability indicators of flameproof components of flameproof three-phase asynchronous motors (laboratory method)
JB/T8972-1999 | Technical specifications for YA series increased-safety three-phase asynchronous motors (frame sizes 315–355)
JB/T8973-1999 | Explosion-proof technical requirements for increased-safety brushless excitation synchronous motors
JB/T8974-1999 | Technical specifications for TAW series increased-safety brushless excitation synchronous motors
JB/T9595-1999 | Technical specifications for YA series increased-safety three-phase asynchronous motors (frame sizes 80–280)
JB/T8670-1997 | Technical specifications for flameproof three-phase asynchronous motors used in valve actuators of YBDF2 series
JB/T8672-1997 | Technical specifications for flameproof three-phase asynchronous motors used in cars of YBJ series
JB/T8673-1997 | Technical specifications for three-phase asynchronous motors used in rock drilling machines of YBI and YI series
MT/T575-1996 | Flameproof three-phase asynchronous motors for pump stations of YBRB series
MT451-1995 | General technical specifications for safety performance of flameproof low-voltage three-phase asynchronous motors used in coal mines
JB/T6763-1993 | Outdoor and outdoor anti-corrosion increased-safety three-phase asynchronous motors of YA-W and YA-WF1 series (frame sizes 80–280)
JB/T6200-1992 | Technical specifications for low-power increased-safety three-phase asynchronous motors of YASO series (frame sizes 56–90)
JB5337-1991 | Technical specifications for spark-free three-phase asynchronous motors ofYW series (frame sizes 80–315)