Open tender for purchasing power transformer.

公开招标购买电力运输设备。

Differential relay is the key protection for power transformer.

差动保护是变压器的主保护。

The theoretical basis is provided for the design of power transformer.

为电力变压器的设计提供理论依据。

Power transformer is one of the most important equipments in the electric system.

电力变压器是电力系统中最重要的电气设备之一。

The oil flowing relay is the important prot of the cooling system of power transformer.

油流继电器是大型电力变压器冷却循环系统的重要部件。

The primary exploration of large power transformer PD UHF detection method is discussed.

针对大型电力变压器局部放电超高频检测法进行了初探性的研究。

A neural network approach to power transformer fault diagnosis is proposed in this paper.

提出并研究了电力变压器故障诊断的人工神经网络方法。

This paper introduces the application of PLC in wind-cooling system of the power transformer.

文章介绍了PLC在变压器风冷系统中的应用。

Inrush identification is always a key problem in power transformer current differential protection.

励磁涌流识别一直是电力变压器差动保护中比较关注的问题。

The calculation of streaming currents induced by turbulent duct flow in a power transformer is studied.

对紊流态下变压器油道内冲流电流的计算进行了研究。

The company's main products are: power transformer, box-type substation, electrical switchgear, and so on.

公司的主要产品有：电力变压器、箱式变电站、电气开关柜等。

The hydrogen power system consists of hydrogen feeding unit, fuel cells, power transformer and the control systems.

氢能发电系统由氢源、燃料电池和电力变换器及其控制系统组成。

To use dissolved gas analysis (DGA) in oil can discover the nature of hidden fault sensitively in power transformer.

用油中溶解气体分析(DGA)能灵敏地发现电力变压器潜伏性故障的性质。

Thus, the DGA technology has been placed in an important position in the preventive tests of power transformer equipment.

因此，无论在国内还是在国际，DGA技术都被列为电力设备预防性试验的重要位置。

Apply this method to estimate the brittle source of electric power transformer, obtained the danger brittle source of it.

把这种方法应用于电力变压器的脆性源评价。求出了电力变压器的危险脆性源。

The article introduces the design of small power single-phase power transformer, and enumerates the instance of designing.

介绍了小功率单相电源变压器的设计，并列举了设计实例。

According to the principle of electrotechnics, how to carry out power differential theory of power transformer is discussed.

从电工学基本原理出发，详细讨论了变压器有功功率差动保护原理如何实现的问题。

Based on finite element method (FEM), the vibration of power transformer windings caused by electrodynamic force is analyzed.

利用有限元算法分析了三相电力变压器绕组各线匝在不同运行模式下电动力引起振动。

Power transformer is the main device in power systems which run normally or not directly affecting the security of the system.

电力变压器是电力系统中的主设备，它是否正常运行直接影响系统的安全运行。

The coupling between coils in power transformer causes the complexity of external characteristics of internal short circuit faults.

电力变压器线圈之间的耦合特性使其内部短路故障的外部特性具有复杂性。

I have a power transformer located approximately 60 feet from the device and it's estimated to be about 20 to 25 feet above the ground.

我有一个电源变压器位于大约60英尺的设备，它的估计约为20至25英尺以上的地面。

The power transformer is one of the key devices in power system and its reliability directly concerns the safety of the whole power network.

电力变压器是电力系统中最主要的设备之一，其运行可靠程度直接关系到整个电力系统电网的安全运行。

On-line PD monitoring of power transformer is Presently the research hotspot in the area of high voltage insulation measurement and diagnosis.

电力变压器局部放电在线监测是当前高电压绝缘检测与诊断领域研究的热点课题。

The design processes, calculating methods and noticeable problems of a high-frequency and power transformer with a midpoint tap are presented.

详细介绍了一个带有中间抽头的高频大功率变压器的设计过程和计算方法，以及要注意的问题。

Large power transformer partial discharge on-line monitoring technology is a hot topic in high voltage insulation detection and diagnosis domain.

大型电力变压器的局部放电在线监测技术是高电压绝缘检测与诊断领域研究的热门课题。

Optimal design for the windings of high frequency power transformer in SNIPS can reduce greatly the windings loss to improve SNIPS power density.

高频开关电源功率变压器线圈优化设计技术能有效减小变压器损耗以及尺寸，提高开关电源功率密度。

As shown in Figure 3-12, common - mode current (ICM) is caused by capacitive coupling (CCOUPLING) from the power line through the power transformer.

从图3 - 12可以看出，共模电流(ICM)是从电源线经过电源变压器通过电容耦合(CCOUPLING)而产生的。

Different electric networks are connected together by power transformer, the complex electric network or large electric power system is made up of.

利用它可以把不同电压的电网联结在一起，组成复杂的电网或庞大的电力系统。

An optimization design system of power transformer is constructed based three DE sign styles: integration design, analogy design and optimization design.

基于综合设计、类比设计、优化设计三种设计方式构建了电力变压器优化设计系统。

To possess accurate parameters of transformer and the power loss curve caused by loads is the presuppositions for economic operation of power transformer.

实现变压器经济运行方式的前提是要有准确的设备参数和负载损耗曲线。