光電型電子式互感器
名稱：光電型電子式互感器
型號：JENJH8-220W
JENJH8-220W系列電子式電壓互感器
JENJH8-220W electronic voltage transformer
一、概述(Description)
本型電子式電壓互感器為絕緣脂灌封絕緣全封閉產品，適用于額定頻率50Hz或60Hz、額定電壓220kV的中性點有效接地的電力系統(tǒng)中，作電能計量、電壓監(jiān)測和繼電保護用。本產品符合IEC60044-7：1999及GB/T20840·7-2007《電子式電壓互感器》標準。
This type of electronic voltage transformer is insulated with insulating grease and fully enclosed. It is used for metering electric energy, voltage control and relay protection in the electric useful-ground neutral system up to rated frequency 50Hz or 60Hz and rated voltage 220kV. The transformer can be executed according to the standards IEC60044-7：1999 and GB/T20840·7-2007.
三、結構簡介(Construction)
本型電子式電壓互感器為全封閉支柱式結構，采用電容分壓式原理，外絕緣為硅橡膠外護套和傘裙，具有耐電弧、耐紫外線、耐老化、壽命長、耐污染及潮濕等特點，適宜于任何位置、任意方向安裝。測量范圍寬，二次短路時不會產生強電流，二次輸出為小電壓信號，功耗極小，不需將大信號轉化為小信號，簡化了誤差源，提高了整個系統(tǒng)的穩(wěn)定性和準確度。
This electronic voltage transformer is fully enclosed and post type product. It adopts the capacitance voltage division principle and the external insulation uses silastic outer sheath and umbrella skirt. The produce has much merit, such as: electric arc resistance, ultraviolet ray, aging resistance, fouling resistance and moisture protection. It can be installed at any place and any direction. This transformer has wide measurement scope, the secondary open circuit does not produce high voltage and the secondary output is the signal of low voltage. The power consumption is very small. As there is no need to transfer the signal of high voltage to the signal of low voltage, the source of error is simplified and the stability and order of accuracy of the whole system are improved.
四、技術參數(shù)(Technical data)
1、額定絕緣水平(rated insulation level)：252/460/1050kV
2、局部放電水平符合GB/T20840·7-2007《電子式電壓互感器》標準。(The conditions of the partial discharge test according to GB/T20840·7-2007《electronic voltage transformer》will be fulfilled without exception.)
3、用戶如有其它技術要求，可與我廠聯(lián)系。(If the customer has other requirement for technology, they can contact our factory.)
4、技術參數(shù)表(technical data form)：
五、外形及安裝尺寸圖(Outline drawing and dimensions of installation)
