Introduces the constitutes of low voltage protection system of distributing transformer, analyzes the failure reason, puts forward concrete measures of improving low voltage protective reliability.
介绍了配电变压器低压保护的组成，对故障原因进行了分析，提出了提高低压保护可靠性的具体措施。
The control and protection switching electric appliance (CPS) is a sort of New-style multifunction and integration component design to low-voltage distribution and control system.
控制与保护开关电器(CPS)是一种新型的用于低压配电与控制系统的多功能、一体化基础元件。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Voltage protection for electronic and electrical equipment used in low voltage single phase power supply system.
主要用于低压单相电源系统电子电器设备的过电压保护。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
The schematics includes four parts: bandgap reference voltage and reference current, 2.7V and 1.8V regulator, over-load protection , Low Battery Detection (LBD) .
其原理包括参考电压电流电路，2.7V及1.8V电压调整电路，过流保护电路以及低压检测电路四个部分。
By analysis and calculation for short circuit current of low voltage motor, kinds and protection methods of short circuit of the low voltage are explained.
通过对低压电动机短路电流分析和计算，说明低压电动机短路的种类和保护方法。
The thermal overload relay is a kind of low-voltage protection apparatuses which is widely used in the field of motor protection.
热过载继电器是一种重要的低压保护类电器，广泛应用于电动机的保护领域。
The paper discusses the low-voltage distribution system earthing and the neutral protection.
现对低压配电系统接地和接零保护进行简要论述。
Low voltage 24v of both absorb gun and soldering pen has good protection of circuit board.
吸锡枪及烙铁为低压输出24v及防静电设计，有效保护线路板。
With high and low voltage automatic monitoring and protection function is good for 365 days a year, 24 hours a day running time.
高低电压自动监测和保护功能； 产品按照每年365天，每天24小时运行长寿命设计。
Ground-fault protection of low-voltage systems is a considerable problem because of the presence and nature of low-level arcing ground faults.
接地故障的低电压系统的保护是因为存在和电弧接地故障的低级别的性质相当严重的问题。
The over-load protection technology is an indispensable constituent of the low-voltage apparatus intellectualization, ensuring the electric motor and the distribution line safe operation.
过载保护技术是低压电器智能化技术的重要组成部分，是保证电动机、配电线路安全运行的重要技术。
The paper presents selectivity coordination of levels and sorts protection in low voltage distribution system.
系统阐述了低压配电系统中各级各类保护之间的选择性配合。
This paper introduces the work principle and structure of new ultra-low voltage protection device, and the structure simulation.
介绍了一种新颖的超低压保护器件的工作原理、结构特点，并进行了器件结构模拟。
Thus, low voltage protection devices, served as lock-out protection reserve will also have characters uf inverse time-lag.
因此，作为失步保护后备的低电压保护也应具有反时限特性。
The problems existing in grounding protection of low voltage distribution system in petrochemical enterprise are pointed out together with their harmfulness.
指出石化企业低压配电系统接地故障保护存在问题及其危害性，并做实例分析，提出了解决措施。
The cable insulation wrap should be done with high-voltage waterproof tape for protection when the humidity is low to avoid the security risks caused by the residual moisture during the wrapping.
电缆绝缘包扎时使用高压防水胶布进行防护，并在天气湿度较低时进行，防止包扎时的残余潮气造成电气安全隐患。
The appearing and improving of intelligent type low-voltage circuit breakers enable short circuit breakdown protection for low-voltage power distribution network to be more reasonable.
低压智能型断路器的出现及完善，使低压配电网络的短路故障保护更趋合理。
A new intellectualized release of low voltage circuit breaker based on P89LPC938 MCU is presented, which integrates the functions of measurement, watching, protection, control and communication.
设计一种基于P 89lpc938单片机的低压断路器智能脱扣器，实现了集测量、监视、保护、控制、通信功能为一体。
In this paper, the significance and area of low voltage grounding protection are described and some methods for measuring grounding resistance are introduced.
简述了低压用电设备保护接地的意义，保护接地范围，以及测量接地电阻的方法。
It is the only way to solve above problems that the earth leakage circuit breaker of time lag action and the distribution protection are adopted in low voltage supply system.
在低压供电系统内采用延时动作的漏电保护开关和分级保护技术，是解决上述问题的唯一途径。
Improper selection and protection of low voltage cables will have direct impact on safety and reliability of the power supply system.
低压电缆如选择与保护不当，直接影响供电系统的安全性、可靠性。
Applications: Low Voltage, High Frequency Inverters, and Polarity Protection Applications.
主要用途：低电压整流，高频转换开关和极性保护。
The low-voltage communications solutions include area-of-rescue assistance systems, paging and intercom systems, mass notification solutions, patient wandering systems, and infant protection.
低压通信系统包括地区救援援助系统，传呼和对讲系统，大规模的通知解决方案，病人转移系统和婴儿保护体系。
This thesis mainly discusses the research on the development of microcomputer measuring and protection device for Mid&Low-voltage transmission line based on double 80296SA platform.
本文研究了基于双80296SA平台的中低压线路微机测控保护装置的开发，包括保护原理的探讨、装置硬件系统的设计、制作、调试和软件系统的开发。
Based on the analysis of our existing branch network in underground low-voltage leakage protection devices, design a new computer leakage protection.
本文在分析了我国现有井下低压分支电网漏电保护装置的基础上，提出了新型微机漏电保护的原理。
It is analyzed that low voltage 660V power supply has superiorities over that of 380V, such as high power transmission ability, low loss of power and improvement of protection and power quality.
分析了低压660V供电较380V供电的优越性，如提高了线路的输电能力；在电缆长度和截面不变的情况下，其输送功率扩大3倍；
It is analyzed that low voltage 660V power supply has superiorities over that of 380V, such as high power transmission ability, low loss of power and improvement of protection and power quality.
分析了低压660V供电较380V供电的优越性，如提高了线路的输电能力；在电缆长度和截面不变的情况下，其输送功率扩大3倍；
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