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NAME： 煤矿风机用隔爆兼本质安全型双电源真空电磁起动器 QJZ-2x120(80)/1140(660)SF
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Number of views:
1000
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Product Description
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特点
产品主要针对煤矿井下大量使用的对旋式风机或单风机，可实现采掘工作面双风机双电源，此外两台电机还可实现延时起动、延时切换，既能防止吹裂风筒，又能减少风机起动时对电网电压的冲击。由于该起动器设计为一体式的两个独立隔爆腔，当主机出现故障时，可以自动转换到备机，实现不停机检修。该起动器的保护采用了智能化综合保护器，操作直观简便，能在系统带电的情况下，通过外引按钮，方便的进行定值调整、信息查询;保护精度高，反应速度快，能完成漏电闭锁、欠压、过压、三相不平衡、过载、短路、断相、风电报警等多种保护功能。
主要技术参数
|
额定电压 |
1140V 660V |
|
额定电流 |
120A 80A |
|
额定频率 |
50Hz |
|
最大控制功率 |
150kW（1140V）、 90kW（660V） |
|
单台接触器极限分断能力 |
2.5kA |
|
本安回路最高开路电压交流 |
17.1V |
|
本安回路最大短路电流 |
63mA |
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