查询词典 current breaker

Produces each kind of stone material and the system granulatedsubstance, the dressing Hubei type breaker, the counter-attack typebreaker, the hammer type breaker, the impact type breaker, the circle锥式 breaker, the duplicate suitable breaker, the ball mill, thevibration gives, sand washer, shaker, flotation machine mine equipmentand so on the material machine.

生产各种石料及制砂、选矿的鄂式破碎机、反击式破碎机、锤式破碎机、冲击式破碎机、圆锥式破碎机、复合式破碎机、球磨机、振动给料机、洗砂机、振动筛、浮选机等矿山设备。

In this thesis the process of constructing the non-perturbative Hamiltonian theory is de-scribed and is applied to estimate the vacuum condensate. It contains the following contents:At the very beginning, by using the path integral method and eliminating the gluon freedom, aGCM action 〓 of current quarks including lower order current-current coupling was derivedfrom the QCD Lagrangian and the effective Hamiltonian operator that could hardly be doneby the normal methods was derived. After doing this, the broken vacuum is introduced whichincludes quark-antiquark condensate through the generalized Bogoliubov-Valatin transformation,the effective Hamiltonian of constituent quark was derived. The detailed formulas containingthe spatial current-current coupling term for the effective Hamiltonian and gap equations wasworked out by parameterizing the correlation kernel as a quadratic potential. And then, the gapequation was solved and the quark-antiquark condensate of vacuum was studied both in the casesof instantaneous interaction and retarded interaction. In the end, the effective Hamiltionian withtwo-body quark-quark interaction was derived with one-body approximation, and with the helpof the functional integral method the coupling non-linear dynamic equations for systems withnuclear matter was derived. Finally, these equations were solved by selfconsistent method andthe effect of nuclear matter on vacuum condensate was studied. The spatial current-current coupling term is too difficult to handle, hence the correlationkernel is assumed to be not important and usually omitted in the pure vacuum condensate, andthe instantaneous interaction generally is adopted. Retaining the spatial current-current termand partial retardation effect, the quark pairs condensate in pure vacuum was studied, and theeffect of quark mass was also studied. At present, little study is focused in the case with nuclearmatter and spatial current-current term also omitted. Under the approximation with partialspatial current-current term, the effect of nuclear matter on vacuum condensate was studied.

本论文描述了量子色动力学整体色对称模型哈密顿量方法的构建过程，得到了反映正反夸克对凝聚真空结构的关于组分夸克的有效哈密顿量算符，它隐含了胶子作用，并且准确至流-流耦合项；接着，通过参数化哈密顿量中的夸克作用关联核，导出平方禁闭势参数化选择的哈密顿量的具体公式和能隙方程；随后，应用公式，编程求解，考察了瞬时作用下和部分延迟作用下真空的正反夸克对凝聚，在计算中保留了空间流-流耦合作用；之后，导出瞬时势和延迟势下包含二体作用项的哈密顿量公式，并采用单体化近似，通过泛函变分方法得到核物质存在时耦合的非线性动力学方程；在保留部分空间双流耦合作用的近似下，求解核物质的动力学方程，考察核物质密度对真空凝聚的影响，以往考察真空凝聚，对关联核的选用，由于空间流-流耦合项不易处理，也认为作用不大，常忽略该项，并且常采用瞬时作用；本文保留空间双流项和部分延迟作用，考察了真空情形的夸克对凝聚，还考察了夸克质量对纯真空凝聚的影响，以往对核物质存在情形的真空凝聚考察很少，也都忽略空间流-流项，本文在考虑部分空间流-流项近似下，考察了核物质存在对真空凝聚的影响。

This series of residual current circuit breaker is the residual current—operated electronic circuit breaker,composed of zero—sequence current transformer,electronic control leakage release and DZ20 type circuit breaker with overload and shod—circuit protection.

本系列断路器电流动作型电子式漏电断路器，主要由零序电流互感器、电子控制漏电脱扣器及带有过载和短路保护的DZ20型断路器组成。

See Air Circuit Breaker, Main Breaker, Molded Case Circuit Breaker and Power Circuit Breaker.

见空气线路断路器、主开关、塑壳线路断路器等）。

See Air Circuit Breaker Main Breaker Molded Case Circuit Breaker and Power Circuit Breaker.www.topenergy.org8'0P6ld }w

见空气线路断路器、主开关、塑壳线路断路器等）。

Especially for the research and development of these products such as: mini circuit breaker, moulded-case circuit breaker, leakage circuit breaker, air circuit breaker, surge protective device, isolating switch, double-power automatic transfer switch, motor soft starter, VVVF and distribution box, there is one obvious point for its relatively ahead and professional features.

尤其在小型断路器、塑壳断路器、漏电断路器、万能式断路器、电涌保护器、隔离开关、双电源自动转换开关、电机软起动器、变频调速器、配电箱等领域的研究和开发存在着相对明显的超前性和专业性。

Then the intellectual control technology of vacuum circuit breaker is discussed particularly. As a control object, the bi-stable permanent magnetic actuator is separated into basic principle so as to determine the nature of the whole. The direct-coupled models of magnetic fields for analysis and for calculation are presented. The static and dynamic characteristics of the models and dynamic behavior analysis and matching analysis for the vacuum circuit breaker with bi-stable permanent magnetic actuator are also discussed. For a further study, fuzzy neural network control technology based on synchronized-closing operation of vacuum circuit breaker is analyzed and the research conclusion is used for realizing the synchronized-closing of vacuum circuit breaker in the future.

论文首先分析了永磁机构的结构和工作原理；然后主要针对双稳态永磁机构真空断路器分析了在开断和关合过程中的静态磁场耦合模型、动态分析数学模型和真空断路器的动态特性，并就永磁机构和真空断路器的匹配进行了分析；最后分析了基于双稳态永磁机构真空断路器的同步操作问题，深入研究了同步操作的模糊控制原理和算法，研究结果为最终实现永磁机构真空断路器的同步操作奠定了基础。

The thesis mainly concerns the following aspects: the relay protection and its trip-close circuit of two circuits transmission-lines are stand alone. The device has the ability of phase-trip that is owns transmission line single phase , 2 or 3phases fault only fault phase tripped.so as to making the power system contact as close as possible. The function of reclosing distribute into relay protection of line and breaker, so it is easy to get no-serious fault information of line protection and realize self-adapted multi pole reclosing. The breaker reclosing depend on the state of owns breaker andthe adjacent breaker. The criterion of serious fault and the sequence reclosing is simple and useful.

本项目具有如下特点：两回线的保护装置及跳、合闸回路完全独立；装置具有分相跳闸功能，即本线单相、两相、三相故障时均只跳故障相，使得故障时系统联系尽可能紧密；重合闸功能合理分配在线路保护和断路器保护中，充分利用了线路保护的信息实现无严重故障判别和分相顺序重合策略的自适应重合功能，由断路器保护根据断路器本身的工作状态和相邻断路器的配合关系实现重合出口；判断严重故障的判据及分相顺序重合闸原理简单合理，具有实用意义，降低了重合于永久故障对系统的冲击。

It simulates the circuit breaker with a zero impedance branch, and adopts the linear network characteristic and theory, variable structure and variable parameter analyses to transfer the short-circuit current flow in the bus-bar equality into each side of circuit breaker, and deduces the sequence component model and algorithm for calculating the short-circuit current of circuit breaker when the short-circuit fault occu...

该方法将断路器作为一条阻抗为零的支路来模拟，运用线性网络特性、定理及变结构与变参数的分析方法，将母线上短路时的短路电流等值转移到断路器两侧，导出了相当于在断路器两侧分别发生短路故障时，流过断路器的短路电流的序分量模型和算法。

Air Circuit Breaker An air circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker.

空气线路断路器空气线路断路器的功能是当电流大小超过断路器的过流跳脱设定值后自动断开。

Warden: That's a beautiful dog, but don't bring her again.

那是条漂亮的狗，但是不要再把她带来了。

You get up in the morning – no hangover!

你第二天早上起来的时候—不会宿醉！