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| Chinese National Standard Category: Explosion-proof electric machine |
| English Title: | Flameproof mining type double speed three-phase induction motors |
| Chinese Title: | 矿用隔爆型双速三相异步电动机 |
| Standard No.: | MT/T 249-1997 |
| Category No.: | K25 |
| Issued by: | Ministry of Coal Industry |
| Issued on: | 1997-12-30 |
| Implemented on: | 1998-6-1 |
| Status: | superseded |
| Superseded by: | MT/T 249-2019 YBSD series flameproof mining type double speed three-phases asynchronous motor |
| Superseded on: | 2019-7-1 |
| Abolished on: | |
| Superseding: | MT 249-1991 |
| Word Count: | 6500 words |
| Similar Standards: | NB/T 10952-2022 NB/T 10955-2022 NB/T 10543-2021 GB/T 31234-2014 JB/T 8973-2011 JB/T 8972-2011 JB/T 7565.1-2011 JB/T 11201.1-2011 JB/T 8974-2011 JB/T 11202.1-2011 GB/T 23306-2009 JB/T 8674-2007 JB/T 10685-2006 JB/T 6201-2006 JB/T 7565.7-2006 GB 20294-2006 JB/T 7565.5-2004 JB/T 7565.1-2004 JB/T 7565.3-2004 JB/T 7565.4-2004 |
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