ABB UFC760BE1142 3BHE0Q4573R1142
ABB 電機(jī)，俗稱“馬達(dá)”，是指依據(jù)電磁感應(yīng)定律實(shí)現(xiàn)電能的轉(zhuǎn)換或傳遞的一種電磁裝置。電動(dòng)機(jī)也稱(俗稱馬達(dá))，在電路中用字母“M”(舊標(biāo)準(zhǔn)用“D”)表示。它的主要作用是產(chǎn)生驅(qū)動(dòng)轉(zhuǎn)矩，作為用電器或各種機(jī)械的動(dòng)力源，發(fā)電機(jī)在電路中用字母“G”表示。
變壓器是一種靜止電機(jī)，它應(yīng)用電磁感應(yīng)原理，可將一種電壓的電能轉(zhuǎn)換為另一種電壓的電能(一般是交流電)。從電力的生產(chǎn)、輸送、分配到各用電戶，采用著各式各樣的變壓器。首先，從電力系統(tǒng)來(lái)講，變壓器就是一種主要設(shè)備。我們知道，要將大功率的電能輸送到很遠(yuǎn)的地方去，再用較低的電壓即相應(yīng)的大電流來(lái)傳輸是不可能的。這是由于: 一方面大電流將在輸電線上引起大的功率損耗 另一方面，大電流還將在輸電線上引起較大的電壓降落，致使電能根本送不出去。為此，需要變壓器來(lái)將發(fā)電機(jī)的端電壓升高，相應(yīng)的電流便可減小 變壓器的簡(jiǎn)介 變壓器的功能主要有: 電壓變換，電流變換，阻抗變換;隔離;穩(wěn)壓《磁飽和變壓器);自變壓器;高壓變壓器(干式和油漫式) 等，變壓器常用的鐵芯形狀一般有E 型和C型鐵芯，XED 型，ED 型 CD 型。 變壓器按用途可以分為 配電變壓器、電力變壓器、 全密封變壓器、組合式變壓器、干式變壓器、 單相變壓器、電爐變壓器、整流變壓器、電抗器、抗干擾變壓器、防雷變壓器、箱式變電器 試驗(yàn)變壓器 轉(zhuǎn)角變壓器 大電流變壓器 勵(lì)磁變壓器。變壓器的最基本型式，包括兩組繞有導(dǎo)線之線圈，并且彼此以電感方式稱合一起。當(dāng)一交流電流(具有某一已知頻率)流于其中之一組線圈時(shí)，于另一組線圈中將感應(yīng)出具有相同頻率之交流電壓，而感應(yīng)的電壓大小取決于兩線圈耦合及磁交鏈之程度一般指連接交流電源的線圈稱之為[一次線圈](Primary coi1);而跨于此線圈的電壓稱之為[一次電壓.]。在二次線圈的感應(yīng)電壓可能大于或小于一次電壓，是由一次線圈與二次線圈間的[匝數(shù)比]所決定的。因此，變壓器區(qū)分為升壓與降壓變壓器兩種。 大部份的變壓器均有固定的鐵芯，其上繞有一次與二次的線圈；阼F材的高導(dǎo)磁性，大部份磁通量局限在鐵芯里，因此，兩組線圈藉此可以獲得相當(dāng)高程度之磁耦合。在一些變壓器中，線圈與鐵芯二者間緊密地結(jié)合，其一次與二次電壓的比值幾乎與二者之線圈匝數(shù)比相同。因此，變壓器之匝數(shù)比，一般可作為變壓器升壓或降壓的參考指標(biāo)。由于此項(xiàng)升壓與降壓的功能，使得變壓器已成為現(xiàn)代化電力系統(tǒng)之一重要附屬物，提升輸電電壓使得長(zhǎng)途輸送電力更為經(jīng)濟(jì)至于降壓變壓器，它使得電力運(yùn)用方面更加多元化，可以這樣說(shuō)，沒(méi)有變壓器，現(xiàn)代工業(yè)實(shí)無(wú)法達(dá)到目前發(fā)展的現(xiàn)況。 電子變壓器除了體積較小外，在電力變壓器與電子變壓器二者之間，并沒(méi)有明確的分界線。一般提供 60Hz 電力網(wǎng)絡(luò)之電源均非常龐大，它可能是涵蓋有半個(gè)洲地區(qū)那般大的容量。電子裝置的電力限制，通常受限于整流、放大，與系統(tǒng)其它組件的能力，其中有些部份屬放大電力者，但如與電力系統(tǒng)發(fā)電能力相比較，它仍然歸屬于小電力之范圍。
ABB motor, commonly known as "motor", refers to an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Electric motors, also known as motors, are represented by the letter "M" (formerly known as "D" in the standard) in circuits. Its main function is to generate driving torque, which serves as a power source for electrical appliances or various machinery. The generator is represented by the letter "G" in the circuit.
A transformer is a static motor that applies the principle of electromagnetic induction and can convert electrical energy from one voltage to another voltage (usually AC). From the production, transmission, and distribution of electricity to various consumers, various transformers are used. Firstly, from the perspective of the power system, transformers are a major type of equipment. We know that it is impossible to transmit high-power electrical energy to distant places with a lower voltage or corresponding high current. This is because: on the one hand, high current will cause significant power loss on the transmission line, and on the other hand, high current will also cause significant voltage drop on the transmission line, resulting in the inability to deliver electricity at all. For this reason, a transformer is needed to increase the terminal voltage of the generator, and the corresponding current can be reduced. The main functions of a transformer include voltage transformation, current transformation, and impedance transformation; Isolation; Stabilized voltage (magnetic saturation transformer); self transformer; high-voltage transformer (dry type and oil diffuse type) The commonly used iron core shapes for transformers include E-type and C-type iron cores, XED type, and ED type CD type. Transformers can be divided into distribution transformers, power transformers, fully sealed transformers, combination transformers, dry transformers, single-phase transformers, furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box type transformer test transformers, corner transformers, high current transformer excitation transformers according to their usage. The most basic type of transformer consists of two sets of coils wound with wires, which are inductively combined with each other. When an AC current (with a certain known frequency) flows into one of the coils, an AC voltage with the same frequency will be induced in the other group of coils, and the magnitude of the induced voltage depends on the degree of coupling and magnetic flux linkage between the two coils. Generally, the coil connected to the AC power supply is called the primary coil; The voltage across this coil is called the primary voltage. The induced voltage in the secondary coil may be greater or less than the primary voltage, which is determined by the turn ratio between the primary coil and the secondary coil. Therefore, transformers can be divided into two types: step-up and step-down transformers. Most transformers have fixed iron cores with primary and secondary coils wound around them. Based on the high conductivity of iron material, most of the magnetic flux is limited to the iron core, therefore, two sets of coils can achieve a considerable degree of magnetic coupling through this. In some transformers, the coil and iron core are tightly bonded, and the ratio of the primary to secondary voltage is almost the same as the ratio of the turns of the two coils. Therefore, the turn ratio of a transformer can generally be used as a reference indicator for boosting or reducing voltage in transformers. Due to the function of boosting and reducing voltage, transformers have become an important accessory of modern power systems. Increasing transmission voltage makes long-distance power transmission more economical. As for step-down transformers, they make power applications more diversified. It can be said that without transformers, modern industry cannot achieve the current development status. There is no clear boundary between power transformers and electronic transformers, except for their small size. The power supply of a 60Hz power network is generally very large, and it may cover a capacity as large as half a continent. The power limitation of electronic devices is usually limited by the ability of rectification, amplification, and other components of the system, some of which belong to the power amplification category. However, compared to the power generation capacity of the power system, it still belongs to the scope of small power.
在線咨詢 
