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1)  over-current protection system
过电流保护系统
1.
Introduction was made to a new kind of molded case circuit breaker over-current protection system.
介绍了一种新型塑料外壳式断路器的过电流保护系统
2)  over-current protection
过电流保护
1.
Study of chain-type over-current protection for cascaded lines;
级联线路的链式过电流保护方案研究
2.
The problems in calculation of time cut-out over-current protection value for various stages of power system in San Steel Group Company is stated,the reason for not be able to select in that protection is analyzed with power network for 4# converter of Steelworks as example,some measures proposed.
阐述了三钢集团公司内部电力系统各级定时限过电流保护定值计算中存在的问题,以炼钢厂4#转炉供电系统为例分析了定时限过电流保护无法实现选择性的原因,提出了解决问题的对策。
3.
The article introduces demands for sensitivity of the over-current protection in power network and also deals with the measurements to improve the sensitivity.
主要介绍对供电系统中过电流保护装置灵敏度的要求,以及提高过电流保护装置灵敏度的措施。
3)  overcurrent protection
过电流保护
1.
The development of the compositive experimental flat for the line overcurrent protection;
线路过电流保护综合实验平台的开发
2.
The paper introduces the rectifying principle of transformer s overcurrent protection and then expatiates compound voltage lockout overcurrent protection.
介绍了变压器过电流保护的整定原则,借以引出了复合电压闭锁过流保护,并对其工作原理和在实际中的应用进行了分析。
3.
A new type of overcurrent protection,phase-sensitive overcurrent protection based on sampled value of current,is suggested in this paper.
针对中低压电网中过流保护存在灵敏度低的缺点,提出了一种新型微机式过电流保护即基于电流采样值的相敏过电流保护,并分析了它的基本原理、具体的实现方法及可靠性问题。
4)  over current protection
过电流保护
1.
Research of current measuring and reliability of over current protection in design of freguency converter;
变频器设计中电流检测方式与过电流保护可靠性的研究
2.
The causes of refusing action of over current protection when the short circuit arises at the beginning of distribution line have been theoretically analysed in this paper.
从理论上分析配电线路出口故障时,电流速断和定时过电流保护拒动的原因,从而阐明电流互感器的响应特性对电流保护有很大的影响,最后提出相应的对策。
3.
Selective overload protection,instant protection and fuse protection method are adopted to meet over current protection requirement.
针对电源通道过电流保护的要求,采用了选择性过载保护、瞬动保护和后备保险丝三种保护方法,达到了对多种过电流情况的保护功能。
5)  protection against overcurrents; overcurrent protection
过<电>流保护、过<电>压保护
6)  balanced current relaying
平衡电流继电保护系统
补充资料:过电流保护
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性质:当电流超过预定最大值时,使保护装置动作的一种保护方式。过电流保护主要包括短路保护和过载保护两种类型。短路保护的特点是整定电流大、瞬时动作。电磁式电流脱扣器(或继电器)、熔断器常用作短路保护元件。过载保护的特点是整定电流较小、反时限动作。热继电器、延时型电磁式电流继电器常用作过载保护元件。在没有太大冲击电流的情况下,熔断器也常用作过载保护元件。在TN系统中,采用熔断器作短路保护时,熔体额定电流应小于单相短路电流的1/4;用断路器保护时,断路器瞬时动作或短延时动作过电流脱扣器的整定电流应小于单相短路电流的2/3。

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