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National standard for explosion-proof motors
The national standards for explosion-proof motors mainly include the following: national standards for explosion-proof motors, energy efficiency limit value standards, explosion-proof performance standards, technical condition standards, labeling and certification
National standard for explosion-proof motors
The national standards for explosion-proof motors mainly include the following:
1、 Core standards
Energy efficiency limit value standard
The Minimum Allowable Values and Energy Efficiency Grades for Small and Medium sized Three phase Asynchronous Motors (GB18613-2012) is a mandatory national standard for energy efficiency of explosion-proof motors, which divides energy efficiency into levels 1, 2, and 3. Level 3 is the lowest limit value, and products below this value are prohibited from production, sale, and use.
Explosion proof performance standards
GB3836 series: suitable for explosive gas environments (such as coal mines, petrochemicals, etc.), divided into models such as dIIAT4, dIIBT4, and dIICT4, corresponding to IIA, IIB, IIC levels and T1~T4 temperature groups, respectively.
Other relevant standards, such as "Explosive Environment Equipment for Steel Ships" (GB51171), provide explosion-proof requirements for special industries (such as ships).
2、 Technical condition standards
Industry standard: including JB/T8674 (YB2 series high-voltage explosion-proof motor), JB/T10685 (YBD2 series variable pole multi speed motor), JB/T7565 (explosion-proof motor), etc., covering technical requirements for explosion-proof motors of different models and specifications.
3、 Identification and Certification
Explosion proof motors must be labeled with explosion-proof signs (such as Ex, dIIAT4, etc.) and hold an explosion-proof production license to ensure compliance with national standards.
4、 Implementation and Promotion
The state encourages enterprises to adopt high-efficiency explosion-proof motors (such as meeting GB18613-2012 Level 2 energy efficiency) to promote energy conservation and emission reduction.
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