Key words: low current earth electrical network, transient earth fault, zero-sequence energy, energy variation.

A double lines distance relay based on the zero sequence components is presented.

提出了适用于平行双回线路的零序距离继电器新判据.

It mainly focuses on analysis and determining method of zero sequence power direction relay.

重点介绍零序功率方向继电器的分析及判定方法.

These reactive devices can't suppress the zero-sequence and negative-sequence current resulted from the unbalanced load.

而且不能补偿不平衡负载导致的 零序 、负序和中线电流.

Abstract: Zero sequence directional power protection is widely used in neutral directly grounded system.

文摘: 在大电流接地系统中广泛采用着零序功率方向保护.

A novel principle of negative-sequence current compensation based adaptive zero-sequence over-voltage protection is therefore proposed.

该文提出一种新的基于负序电流补偿的自适应 零序 过电压保护原理.

The equations of zero-sequence coupling transmission lines are derived from telegraph equations.

运用电报方程推导出 零序 耦合传输线的输线方程.

Storage yard MIS is one of the emphasizes for research.

货场管理信息系统是论文研究的重点之一.

And a large team-owned motor transport, storage yard and other facilities.

并有大型自备汽车运输队, 仓储堆场等配套设施.

We found your machine tools up to the international standard.

我们认为贵公司的机床达到了国际标准.

Now this format an international standard after the world of consumer benefit.

现在这个格式成为国际标准之后将使全世界的使用者从中受益.

The main quality index than international standard, this product, welcome overseas customers.

主要质量指标超过国际上通用标准, 该产品深受客户欢迎,享誉海外.

All the exports come up to the international standard.

所有的出口商口必须达到国际标准.

Such amendments shall meet all the requirements of this International Standard.

这种修改应满足本标准的所有要求.

Pass ISO 9001 national standard quality system authentication.

并通过ISO9001国标质量体系认证.

Table 5 bench to adopt national standard angle steel production, processing completed pre-coated surface rust primer.

工作台台架采用5号国标角钢制作, 加工完毕表面预涂防锈底漆.

The efficiency of purification could reach 96 % . The exhaust can reach the national standard ( Grade A ).

确定了装置最佳工作条件,净化效率达96%.

Dimension and tolerance dimensiontolerance of bar, wire, plate and rod accord with national standard.

尺寸及公差:条 、 丝 、 板、棒均按对应国际控制.

All the products have met the all International and National standard in terms of environmental performance.

在环保性能上符合国际国内各项标准.

Made it accord with the relating national standard and provided the credible technical information.

使之符合有关国际标准,为批量生产提供可靠的技术资料.

The national standard prescribed different kinds of groove forms and groove sizes for steel welded joints.

本标准规定了钢焊接接头的各种坡口形式与坡口尺寸.