Introduction to explosion-proof limiters
BZX51-5Explosion proof travel switch，BZX51-5Explosion proof limit switch，BZX51-5Explosion proof limiters，Explosion proof travel switchBZX51-5 Explosion proof signsExedIICT4，Used for explosion-proof cab door switch and walkway、End beam door switch。
Explosion proof limiters说明
Product Name：BZX51-5Explosion proof travel switch
Alias：Defense爆仓门开关Explosion proof limiters
Model specifications：BZX51-5type
Category：Security and explosion-proof electrical
Product origin：Changyuan, Xinxiang, Henan
Manufacturer's brand：Henan Hongsheng Crane Co., Ltd
Is it in stock：Partial spot goods
production cycle ：3~10day
Scope of Supply：nationwide
mode of service：Self pickup or agency consignment
Is it installed：Install separately
BZX51-5Product diagram of explosion-proof travel switch
one、Explosion proof limiters详情
1、铸铝合金外壳、surface面喷塑。
2、Equipped with high breaking miniature circuit breaker inside。
3、Has overload、Short circuit protection function,And can be equipped with leakage protection function according to requirements。
4、Explosion proof travel switch内装lx19Travel switch。
5、钢管或电缆布线均可。
6、Explosion proof travel switch符合gb3836-2000.iec60079Standard requirements.
7、The product has a left rocker arm type、右摇臂式、滚轮柱塞式、双摇臂式、Flexible contact type optional。
8、The temperature group isT1-T6爆炸性气体环境。
two、Scope of application of explosion-proof limiters
1.1area、2area危险场所。
2.IIA、IIB、IICExplosive gas environment。
3.可燃性粉尘环境20area、21area、22area。
4．Suitable for temperature groups ofT1—T6的环境。
5.适用范围组别含义
1.1爆炸性气体环境危险area域的划分
不同的国家和地area，按各自的标准划分爆炸危险area域。
According to the frequency and duration of the occurrence of explosive gas mixtures in China，将爆炸性气体环境分为Oarea、1area和2area。（WithIEC国际电工委员会one致）
0area：连续出现或长期出现Explosive gas mixture的环境。
1area：在正常运行时可能出现Explosive gas mixture的环境。
2area：Environments where explosive gas mixtures are unlikely to occur during normal operation, or environments where explosive gas mixtures only exist for a short period of time even if they do occur。
0areaone般只存在于密封的容器，贮罐等内部气体空间，在实际设计过程中1There are also very few districts，Most cases belong to2area。
1.2Defense爆电器设备分为two类：
Ⅰ类煤矿井下用电气设备
Ⅱ类除矿井以外的场合使用的电气设备
1.3Ⅱ类电气设备：
According to its maximum test safety gap or minimum ignition current ratio applicable to explosive gas mixtures，分为ⅡA，ⅡB，ⅡCthree classes of initials；And according to its highest surface temperature, it is divided intoT1-T6六组。
1.4Explosive gas mixture按Ignition temperature分组，See table1。
1.5Explosive gas mixture，按其最大试验安全间隙（MESG）或最小点燃电流比（MICR）classification，See table2。
surface1
| 组别 | T1 | T2 | T3 | T4 | T5 | T6 |
| Ignition temperaturet(℃) | 450 | 300 | 200 | 135 | 100 | 85 |
surface2
| category | ⅡA | ⅡB | ⅡC |
| 最大试验安全间隙（MESG）（mm） | ≥0.9 | 0.5<0.9 | ≤0.5 |
| 最小点燃电流比 | >0.8 | 0.45≤MICR≤0.8 | <0.45 |
性质：在规定试验条件下，气体、The ratio of the minimum ignition current of a vapor explosive mixture to the minimum ignition current of a methane explosive mixture。中国规定气体、Vapor hazardous substances are classified according to the minimum ignition current ratioⅡAlevel，ⅡBlevel和ⅡClevel。最小点燃电流比≤1.0，>0.8ForⅡAlevel；≤0.8，>0.45ForⅡBlevel；≤0.45ForⅡClevel。for example，ethane、ethylene、乙炔分别为ⅡAlevel，ⅡBlevel，ⅡCGrade hazardous substances。
BZX51-5Explosion proof travel switch外形尺寸图
Manufacturer of explosion-proof limiters
Henan Hongsheng Crane Co., Ltd.'s More Explosion proof and Explosion proof Types Rise and Fall、Left and right travel limit switches（Limiter）货源产地、Manufacturer、Model specifications、technical parameter、Explosion proof level、Product characteristics, usage, and selection、Working principle and installation and maintenance、Please contact us for common troubleshooting and safety precautions。
