The engine must be started and running for the following voltage tests. 引擎必须被启动,并按下列电压试验步骤进行。
The magnet limbs rotating field and free running constant voltage mould type. 发电机为防滴式,凸极旋转磁场自激恒压型式。
On working running voltage was 18 kV; 工作电压18kV;
The effect of matrix concentration ( linear polyacrylamide, LPA), running temperature and running voltage on CE performance were also studied. 研究不同筛分介质(线性聚丙烯酰胺LPA)浓度、分离温度和分离电压对CE行为的影响。
The effects of some important factors such as additive, acidity and concentration of running buffer, separation voltage, injection time and temperature were investigated to acquire the optimum condition. 研究了缓冲体系的酸度、浓度、添加剂、分离电压、进样时间以及温度等条件对分离的影响,得到了电泳的最优条件。
The authors present a new synthetic load model suiting for large varying range of running voltage. 提出了一种具有全电压范围适应性、能描述负荷失稳行为、适合于电压稳定分析的综合负荷模型,给出了模型参数的辨识方法。
In the light of incident cause, advantages of the preventative oil test in safe running of high voltage electric devices are analyzed. 结合事故原因分析预防性油试验在高压电器设备安全运行中的好处,并对类似情况提出警示。
The effects of working electrode potential, concentration and pH value of the running buffer, separation voltage and injection time were investigated. 研究了电极电位、运行缓冲液的浓度和酸度、电泳电压及进样时间等对电泳的影响,得到了最优化的测定条件;
The shorts of earth fault protection are expounded and qualitatively analyzed, which is running in higher steady voltage when single phase earth fault occurs in 6~ 10 kV power system with traditional earth connection. 阐述了6~10kV电网中性点传统接地方式下单相接地故障时,在升高的稳态电压下继续运行的弊端,并作了定性分析。
An increased LPA concentration ( 4%, 6%), a lower running temperature ( 20 ℃) and a higher running voltage ( 9 kV) might be helpful for the separation of single, stranded DNA fragments. 较高浓度的LPA(4%~6%)、较低分离温度(20℃)和较高分离电压(9kV)有助于单链DNA峰分离。
By comparing the characteristic of different technology, the influence on unit stable running by high voltage frequency conversion is summarized. Also the development tendency is predicted. 对不同形式的高压变频技术特点进行了比较,总结了高压变频装置对机组稳定运行的影响及高压变频技术的发展趋势。
For non grounding system, the neutral point potential in normal running condition, the voltage raise of the non grounded phases in SLG and PPG incidents, and the neutral point potential raise in SLD incident are analyzed in detail. 详细分析了小电流接地系统在正常运行时中性点电位,单相接地故障、两相接地故障时,非故障相电压的升高,单相断线及两相断线时,中性点电位的升高。
The device not only remotely controls all control functions but also remotely measures the running parameters, such as running current and voltage of cutting motor, haulage speed and fault conditions of shearer. 该装置既可遥控采煤机的全部控制功能,又能遥测采煤机截割电机的运行电流、电压、牵引速度、故障状态等运行参数。
The running of falling voltage for light or empty load that many papers have put forward cannot keep motors running in an economical way through simulation computation of comprehensive efficiency for two motors under different load ratio. 对不同负载率情况下两台异步机综合效率的仿真计算进行分析,发现很多文献所倡导的轻载降压运行方式,并不能使异步机在整个负载率范围内达到经济运行标准。
This paper introduces main design scheme of the power supply control system ( PSCS) for electrostatic precipitation, which has capable of tracking the highest running voltage automatically and it can implement many protective functions for example short circuit of electric field and temperature controll. 介绍了静电除尘用高压供电设备控制器的主要设计方案,此方案的特点是能自动跟踪最高运行电压,具有电场短路、电场开路、偏励磁和油温超限等保护功能。
When power was off for predictive maintenance such as leaking, etc., the test voltage was much lower than the running voltage and the response for some defects was not so sensitive. 且停电作介质损耗、泄漏等预防性试验时,试验施加的电压远远低于运行电压,对某些缺陷的反应也不够灵敏。
Conclusions Appropriate LPA concentration, running temperature and running voltage can improve CE performance in SSCP analysis. 结论:调整适宜的LPA浓度、分离温度和分离电压可提高CE分析SSCP的效率。
Through analysis and calculation of the heat exchange process, the selection method of cross section and length of connecting conductor was put forward to ensure the running temperature rise of low voltage switchgear does not exceed the limiting value. 本文通过热交换分析与计算,提出低压成套开关设备中连接导体截面和长度的选用方法,以确保电器元件在成套设备中的运行温升不会超过极限值。
With the enhancement of gas-insulated switchgear ( GIS) running voltage and SF6 pressure, the very fast transient overvoltage ( VFTO) due to the operation of disconnecting switch is becoming increasingly serious, which causes faults of the main transformer connected with the GIS and other problems. 随着全封闭气体绝缘组合开关(GIS)运行电压和SF6气压的提高,因隔离开关操作引起的快速暂态过电压(VFTO)也日益明显和严重,引起与GIS相连的主变故障及其他问题。
Effect to Parallel Running for Generator'S Voltage Adjust Capability 发电机调压性能对机组并联运行的影响
The running voltage of smelting furnace is about 140 volt, and electrode current is as high as several thousands ampere. The contact technology and the control exist much difficult problem when the reactive power compensation is used to so large current. 矿热炉工作在140V左右的低电压下,并且电极电流高达几万安培,要对这么大的电流进行无功补偿,不仅存在许多接触工艺上的困难,还给控制上提出许多难题。
Based on Microchip PIC MCU, A pharos system is designed to acquire parameters of the running pharos such as voltage and current of battery and flashing quality. 采用PIC单片机,设计实现了对航标当前电压、电流及灯质等状态参数的测量电路,提供了红外接口,输出航标当前状态数据。
It analyzes hazard of cutting-out of voltage changer, introduces technical measures and management measures to prevent cutting-out of voltage changer, it indicates strengthening operation maintenance of voltage changer and adopting measures to prevent cutting-out, which can ensure safety running of voltage changer. 分析了变压器出口短路的危害,介绍了防止变压器出口短路的技术措施和管理措施,表明了加强变压器的运行维护,采取措施防止出口短路,能够确保变压器的安全稳定运行。
The concentration of amylose, the ionic intensity and pH of the buffer, running voltage and organic additive were reviewed, and the conditions of the experiment were optimized, too. 研究中考察了可溶性淀粉浓度、缓冲溶液种类、离子强度与缓冲溶液pH值以及有机添加剂、运行电压等对分离的影响,进行了实验条件的优化。
The monitoring data cannot only reflect the running state of the high voltage transmission line directly and quickly, but also can be used in the state analysis of the power system. 这些监测数据不仅能直接、快速地反映出高压输电线路的运行状态,而且还可以应用在电力系统的状态分析中。
The effect of analytical conditions, such as applied potential, the pH and concentration of running buffer, separation voltage, injection voltage and injection time were investigated in detail. 考察了检测电位、运行缓冲液浓度与pH值、分离电压、进样电压、进样时间等实验条件对分离检测的影响。
Load curve characteristic coefficient, the actual running voltage are the same under the premise of this hypothesis, and actual condition is not so, give line loss the theoretical calculation brought greater error. 负荷曲线特征系数、实际运行电压均相同这一假设的前提下,而实际情况并非如此,给线损的理论计算带来了较大误差。
As crude oil production demand higher quality of power supply, it requires the transmission of external insulation in the long running voltage and atmospheric over voltage, internal over voltage can reliable operation. 而原油生产对供电质量需求较高,这就要求输变电设施外绝缘在长期运行电压以及大气过电压、内部过电压下均能可靠的运行。
For DLS, according to the running characteristics affected by voltage sags, this article uses neural networks to establish assessment model. 针对双闭环系统,根据暂降影响下的系统运行特性,通过神经网络建立了暂降影响评估模型。
Internal overvoltage the highest multiples and system running voltage amplitude connected, so the higher voltage level, the more serious the overvoltage problems. 内部过电压倍数与系统的最高运行电压幅值相关,所以电压等级越高,过电压问题越严重。