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- power supply under coal mine 井下供电系统
- Analyses the technological parcticability and economic advisability on local villages and towns coal mine with the technology of 10 kV direct power coal mine with the technology of 10 kV direct power supply under the mine. 论述了地方、乡镇煤矿10 kV电源下井供电的技术可行性、经济合理性。
- The state of power supply in Hegang Coal Mine Bureau is introduced,and the reform plan is also put forward. 介绍了鹤岗矿务局选煤厂供电现状,提出了供电系统改造方案。
- Based on special surrounding of coal mine,a new type of monolithic switch power supply is studied,applied in the design of essential safety mineral power supply. 基于煤矿的特殊环境,研究了一种新型的单片开关电源在矿用本质安全型电源设计上的应用。
- Overload protection, if the power supply under test draw abnormal high current, the AC source output shutdown and alarm instead of blowing up a fuse. 过载保护，如果测试中的电源拉非正常的电流，交流源的输出就会关断，并发出警告而不是烧断保险.
- The research on probing into water bearing structure and watery of fore and lateral survey under coal mine is made by TEM. 利用瞬变电磁法在煤矿井下巷道开展了超前和侧向探测含水构造及富水性的试验研究。
- Metal material erosion mechanism and main damage form under coal mine shaft caused by erosion are introduced and propeses the measures for prevention. 介绍了金属材料腐蚀的机理和煤矿井下金属材料腐蚀破坏的主要形式,并提出了预防措施。
- The "GW9-12"type of outdoor high voltage isolator switch is the high voltage switch ewuip ment of single phase AC 50HZ,The product is suitable for power system sithrated 10KV to make or break power supply under circumstances of with voltage and nomload. 12型户外高压职责离开关是单相交流50HZ高压开关设备，用于10KV的电力系统中，作为有电压无负载的情况下接通或分断电源使用。
- The paper introduces the current situation of the power supply system in Wulan Coal Mine, and following the general plan of tapping the northern potential by Ningxia Coal Mining Group Co. 本文介绍了乌兰煤矿供电系统的现状,按照宁夏煤业集团公司“北部挖潜”战略的总体部署对供电系统作出的改造方案。
- Design of power supply and the management system for coal mine 矿井供电设计与管理系统
- ZVS of inverter arc welding power supply under low-load conditions 逆变式弧焊电源轻载状态下零电压软开关的实现
- New thoughts of power supply plan of coal mine factory area 矿井工广区供电方案新思路
- The impacts on the security of Xifeihe River left embankment under coal mining are evaluated with elastoplastic model, two-exponent rheological model and probability integral method. 然后利用数值模拟软件中的弹塑性模型和流变模型及概率积分法开展煤层开采对西淝河左大堤安全的影响评价。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Research on node address of CAN field-bus under coal mine 矿井下CAN总线节点地址的设计
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- Switching Power Supply Classification of Coal Mine and It's Application 煤矿开关电源的分类及应用
- overlying strata under coal mining conditions 采动覆岩
- Analysing About Self Detect Protecting Equipment for Coal Mine Power Supply 矿井供电自检保护装置的分析
- Specifications on Unattended Power Suppl. 微波无人值守电源技术要求。
