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1·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。

2·The article gives the analysis about the present low-voltage protection of high-voltage motor, sets forth the existing problems and brings out the proposal for improvement.

对我公司高压电机的低电压保护现状进行分析，指出存在的问题，并提出改进意见。

3·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。

4·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。

5·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。

6·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。

7·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。

8·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。

9·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。

10·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。