概述
　　GM-2高压封闭母线是本公司吸收国内共箱高压母线产品特点，及参照国外同类产品设计生产的新产品。它具有优良的机械特性，和电器特性，安全可靠，是高压大电流设备理想的输电设备。
　　GM-2高压封闭母线品种齐全，用户可以根据需要选择电流等级和电压等级。高压母线外壳采用铝合金外壳，有效的减小了过流电流引起的发热损耗。并采用高强度高性能的绝缘予支持导电体，具有良好的抗短路电动性能，室外安装时，高压母线具有可靠的防雨结构，并具有良好的接地保护系统，可以确保高压封闭母线长久安全可靠的运行。
Intruction
GM-2 high voltage sealed bus-bars are designed according to the characteristics of the same produits at home and abroad. The products have advantages of good mechanical and electrical properties.
GM-2 series products can be used according to the rate of voltage and current.They have less heat loss of eddy current and good property of re-short circuit,because their shelles are manufactured by aluminum alloy and their electric conductors are supportcd by high strength insulators.When products are used outdoors,the constrution of rainproof is designed to ensure products safely work.

1、安装型式：GM-2高压封闭母线可以在室外安装，具有防雨，防风结构。安装维修孔一般向上安装，维修孔需要向下安装时，可以在定货时向生产厂说明。
2、本品适用于高压变压器与高压变电盘之间的电气连接，发电机组与引压变压器之间的电气连接。
3、配电方式：3相3线，外壳接地。
4、额定电压：3.45KV～40.5KV
5、额定电流：3.45KV～11.5KV 400A～3000A; 40.5KV 100A～1000A.
6、额定频率：50Hz
7、箱体：采用弱磁性钢板及铝合金板作箱体外壳。
8、接地保护系统：符合IEC-364-5-54对接地系统的要求。
9、防护等级：室内安装型：IP40； 室外安装型：IP43
10、负载性能：在额定电流下导电体及外壳的温升符合GB763-74交电流高压电器表长工作时的升温要求。
11、短路性能：动稳定及热稳定符合交流高压电器动、热稳定试验方法，GB-2706-81标准的要求。
12、绝缘性能：符合GB311.1-83标准要求。
 
1、Installing:Products can be installed outdoors.The maintaiopenings must be up except of particular instructing when user make the constract with manufacturer.
2、The products can be used as jount between high voltage transformer and high voltage distributor or and electric generator.
3、Distributing mode:three-phase,and shell as ground wire.
4、Rated Voltage:3.45KV～40.5KV.
5、Rated current:3.45KV～11.5KV 400A～3000A; 40.5KV 100A～1000A.
6、Rated frequence:50Hz
7、Shell:less magnetic steel or aluminium alloy
8、Earth lead:up to the standard of IEC-364-5-54
9、Protection class: indoor,IP40;outdoor,IP43.
10、Loading property:When the using current is less rated current,the temperature of electric conductour and shelles is up to the standard of GB763-74.
11、Short current property:Dynamic and heat stability are up to the standard of GB2706-81.
12、Insulating:up to the standard of GB311.1-83.

室外型高压封闭母线断面示意图
Sketch for the section of out-door high voltage seal bus

高压封闭共箱母线外型参考尺寸表
The Overall Dimension of High Voltage Seal Bus of Community Box