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電力電容型號與規(guī)格怎么看?
作者:紅寶電容 來源:http://www.dsbb.net.cn 日期:2020-08-28 10:13 瀏覽

  電力電容型號與規(guī)格主要是為了匹配變壓器或者用電負載,以保證電容器在使用過程中的安全穩(wěn)定,簡而言之,就是給設備提供合適的元器件,保證設備正常運轉。

  The main purpose of power capacitor model and specification is to match the transformer or electrical load, so as to ensure the safety and stability of the capacitor in the process of use. In short, it is to provide appropriate components for the equipment to ensure the normal operation of the equipment.

  常見電力電容型號

  Common power capacitor models

  電容器型號會因為填充介質(zhì),電壓,諧波等不同而有所差異,現(xiàn)在我們以CKKB440-20-3-G為例,詳細介紹一下電力電容器型號。

  Capacitor model will be different due to different filling medium, voltage, harmonic and so on. Now we take ckkb440-20-3-g as an example to introduce the power capacitor model in detail.

  電力電容器型號表示

  Power capacitor model indication

電力電容器型號表示

  第一組數(shù)字440為電力電容電壓等級,表示電力電容電壓為440V。

  The first group of numbers 440 is the voltage level of power capacitor, which means that the voltage of power capacitor is 440V.

  第二組數(shù)字20為電力電容容值,表示電力電容容量為20Kvar。

  The second group of numbers 20 is the power capacitance value, which indicates that the power capacitance capacity is 20kvar.

  第三組數(shù)字3為電力電容相數(shù),表示電力電容為單相電力電容。

  The third group of numbers 3 is the number of power capacitor phases, which indicates that the power capacitance is single-phase power capacitance.

  隨著生產(chǎn)設備自動化的發(fā)展,電力電容使用環(huán)境中諧波問題越來突出,部分電力電容廠家根據(jù)這一趨勢,推出一系列能抵抗不同程度諧波的電力電容,因此部分電力電容型號會有適用諧波等級的備注,例如:

  With the development of production equipment automation, the harmonic problem in the use environment of power capacitors is becoming more and more prominent. According to this trend, some power capacitor manufacturers introduce a series of power capacitors that can resist different degrees of harmonics. Therefore, some power capacitor models will have remarks on the applicable harmonic level, such as:

  適用于諧波電流畸變率THDI≤50%的工況環(huán)境。

  It is suitable for harmonic current distortion rate THDi ≤ 50%.

  常見電力電容規(guī)格

  Common power capacitance specifications

常見電力電容規(guī)格

  電力電容規(guī)格會因型號不同有一定的區(qū)別,我們?nèi)砸訡KKB440-20-3-G為例,詳細介紹一下電力電容規(guī)格:

  The specification of power capacitor will be different according to different models. Taking ckkb440-20-3-g as an example, we will introduce the power capacitor specification in detail

  額定電壓(Un):440V

  Rated voltage (UN): 440V

  額定容量(Qn):20Kvar

  Rated capacity (QN): 20kvar

  根據(jù)電容器型號以及額定電壓與額定容量,通過查詢CKKB電力電容參數(shù)表,可知

  According to the capacitor model, rated voltage and rated capacity, through the query of ckkb power capacitance parameter table, it is known that

  額定電流(In):26.2A

  Rated current (in): 26.2a

  額定電容(Cn):329.0μF

  Rated capacitance (CN): 329.0 μ f

  電容器外形尺寸(φD*H):116*250

  Overall dimension of capacitor (φ d * h): 116 * 250

  根據(jù)國標要求,為了保證電力電容正常運行,需要有1.1倍的過電壓以及1.43倍的過電流能力,即電力電容允許過電壓為:

  According to the requirements of national standard, in order to ensure the normal operation of power capacitor, it is necessary to have 1.1 times of overvoltage and 1.43 times of over-current capacity

  額定電壓*1.1=440*1.1=484V

  Rated voltage * 1.1 = 440 * 1.1 = 484v

  電力電容允許過電流為

  The allowable over current of power capacitor is

  額定電流*1.43=26.2*1.43=37.466A

  Rated current * 1.43 = 26.2 * 1.43 = 37.466a

  部分電力電容廠商考慮到客戶使用環(huán)境復雜,為電力電容設計了1.3倍的過電壓能力,即電力電容允許過電壓為:

  Considering the complex service environment of customers, some power capacitor manufacturers have designed 1.3 times over-voltage capability for power capacitor, that is, the allowable overvoltage of power capacitor is:

  額定電壓*1.3=440*1.3=572V

  Rated voltage * 1.3 = 440 * 1.3 = 572v

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