光電型電子式互感器
 
名稱：光電型電子式互感器
型號：LENJH8-110W

LENJH8-110W型數(shù)字式光電電流互感器
LENJH8-110W digital photoelectric current transformer
一、概述(Description)
LENJH8-110W數(shù)字式光電電流互感器采用了數(shù)字化技術(shù)，先進的光電技術(shù)，又綜合了國內(nèi)高壓電器技術(shù)的精華而研制成功的新型高電壓電流測量裝置。它可以用來測量高壓供電系統(tǒng)中的電流以達到計量和保護的目的。適用于額定頻率50Hz或60Hz、額定電壓110kV的電力系統(tǒng)中，作電能計量、電流測量和繼電保護用。本產(chǎn)品符合IEC60044-8：2002及GB/T20840·8-2007《電子式電流互感器》標準。
LENJH8-110W digital photoelectric current transformer is a new device that measure high voltage, high current. This device adopts digital technology, advanced electrooptical technology and combines the essence of demotic high voltage apparatus technology. It can be used to measure the current of the high-voltage power supply system to achieve the goal of measuring and protection. It is used for metering electric energy and current, relay protection in the electrical system up to rated frequency 50Hz or 60Hz and rated voltage 110kV. The transformer can be executed according to the standards IEC60044-8：2002 and GB/T20840·8-2007.

三、結(jié)構(gòu)簡介(Construction)
1、LENJH8-110W數(shù)字式光電互感器是一種新型的電子式電流互感器。它不同于傳統(tǒng)的電磁式電流互感器，它采用了光電隔離、數(shù)據(jù)數(shù)字化、光通信技術(shù)。還用高度可靠的電氣絕緣設(shè)計使可靠性大大加強。
LENJH8-110W digital photoelectric transformer is a new type of electronic current  transformer. It is different from the traditional electromagnetic current transformer. It adopts the optoelectronic isolation, data digitization and technology of optical communication. The design of highly reliable electric insulation makes the reliability improved significantly.
2、它也不同于基于法拉第磁光效應(yīng)和克爾電光效應(yīng)的光電電流互感器，它的電流信號傳感器就是低能量電流互感器和羅可夫斯基線圈。電流信號在高電位處就轉(zhuǎn)變?yōu)閿?shù)字信號，通過光纖傳到低電位處。所以測量的準確度高，抗振動性、抗外界溫度變化、抗電磁干擾及運行壽命都有保障。
It is also different from the photoelectric current transformer that is based on Faraday magneto-optical effect and Kerr electro-optic effect. Its sensor for current signal is the low-energy current mutual inductor and the Rogowski coil. The current signal is transferred to digital signal at the high potential and the digital signal is transferred to the low potential through optical fiber. Therefore, the accuracy of measurement is high. It has the characteristics of shock resistant, resistance of temperature of external environment, anti-electromagnetic interference and the service life is guaranteed.
3、本裝置中，高電位處的供電是一個重要的技術(shù)創(chuàng)新。本裝置采用了低電位激光供能和高電位取能等多重供能技術(shù)，產(chǎn)品運行可靠性高。
The power supply at the high potential of this device is a technical innovation. This device adopts multiple technology of power supply such as laser power supply at the low potential and energy output at high potential. Therefore, the product operates stably.
4、LENJH8-110W數(shù)字式光電互感器的絕緣柱采用硅橡膠外護套傘裙，為支柱式。結(jié)構(gòu)輕便、簡單，重量輕；有良好的抗污能力、可靠性高。
The insulating column of LENJH8-110W digital photoelectric transformer
adopts the silastic outer sheath and umbrella skirt. It is the pillar type, which enable simple and light structure and light weight. It has the ability to counter pollution and high reliability.
四、技術(shù)參數(shù)(Technical data)
1、額定絕緣水平(rated insulation level)：126/230/550kV
2、局部放電水平符合GB/T20840·8-2007《電子式電流互感器》標準。(The conditions of the partial discharge test according to GB/T20840·8-2007《electronic current transformer》will be fulfilled without exception.)
3、用戶如有其它技術(shù)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(shù)參數(shù)表(technical data form)：
表1：額定一次電流及動熱穩(wěn)定電流(Rated primary current , rated dynamic and thermal current)

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