NARI-RELAYSLFP-974B(R)/E(R)/F(R)操作继电器装置--LFP-974B(R)/E(R)/F(R)操作继电器装置技术和使用说明书（此页为封面，不印刷）南瑞继保电气有限公司版权所有2004.10（V1.0）本说明书和产品今后可能会有小的改动，请注意核对实际产品与说明书的版本是否相符。更多产品信息，请访问互联网：HYPERLINK"http://www.nari-relays.com"http://www.nari-relays.com目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc85860071"1装置的配置与规格PAGEREF_Toc85860071\h1HYPERLINK\l"_Toc85860072"1.1装置的配置及特点PAGEREF_Toc85860072\h1HYPERLINK\l"_Toc85860073"1.2装置的技术数据PAGEREF_Toc85860073\h1HYPERLINK\l"_Toc85860074"2LFP-974B/BR装置介绍PAGEREF_Toc85860074\h2HYPERLINK\l"_Toc85860075"2.1LFP-974B/BR装置构成与原理PAGEREF_Toc85860075\h2HYPERLINK\l"_Toc85860076"2.1.1电压切换回路（YQ）PAGEREF_Toc85860076\h2HYPERLINK\l"_Toc85860077"2.1.2操作回路（SWI）PAGEREF_Toc85860077\h2HYPERLINK\l"_Toc85860078"2.2LFP-974B装置布置与结构PAGEREF_Toc85860078\h4HYPERLINK\l"_Toc85860079"2.2.1装置接线端子PAGEREF_Toc85860079\h4HYPERLINK\l"_Toc85860080"2.2.2装置结构及安装PAGEREF_Toc85860080\h4HYPERLINK\l"_Toc85860081"2.2.3装置面板布置PAGEREF_Toc85860081\h5HYPERLINK\l"_Toc85860082"2.3LFP-974BR装置布置与结构PAGEREF_Toc85860082\h5HYPERLINK\l"_Toc85860083"3LFP-974E/ER装置介绍PAGEREF_Toc85860083\h7HYPERLINK\l"_Toc85860084"3.1LFP-974E/ER装置构成与原理PAGEREF_Toc85860084\h7HYPERLINK\l"_Toc85860085"3.1.1电压切换回路PAGEREF_Toc85860085\h7HYPERLINK\l"_Toc85860086"3.1.2操作回路PAGEREF_Toc85860086\h7HYPERLINK\l"_Toc85860087"3.2LFP-974E装置布置与结构PAGEREF_Toc85860087\h9HYPERLINK\l"_Toc85860088"3.2.1装置接线端子PAGEREF_Toc85860088\h9HYPERLINK\l"_Toc85860089"3.2.2装置结构及安装PAGEREF_Toc85860089\h10HYPERLINK\l"_Toc85860090"3.2.3装置面板布置PAGEREF_Toc85860090\h10HYPERLINK\l"_Toc85860091"3.3LFP-974ER装置布置与结构PAGEREF_Toc85860091\h11HYPERLINK\l"_Toc85860092"4LFP-974F/FR装置介绍PAGEREF_Toc85860092\h12HYPERLINK\l"_Toc85860093"4.1LFP-974F/FR装置构成与原理PAGEREF_Toc85860093\h12HYPERLINK\l"_Toc85860094"4.1.1电压切换回路PAGEREF_Toc85860094\h12HYPERLINK\l"_Toc85860095