電站用穿墻套管適用于35kV及以下電壓等級的電站、變電所配電裝置及電器設備中，供導線（母線）穿過接地隔板，墻壁及封閉配電機構中作為絕緣支持和外部導線（母線）連接用。
High pressure wall bushing of power station is suitable for up to and including 35 kv voltage grade of power plant, substation, power distribution equipment and electrical equipment, For lead (bus) through the ground plate, Walls and closed distribution agencies as support and external insulation wire (bus) in connection with.
（二）產品分類Product categories
電站用高壓穿墻套管分為戶內和戶外兩大類，有銅導體、鋁導體及不帶導體的母線式穿墻套管三種結構，并有普通型和耐污型兩大類產品。
Wall bushingdivided into two big series: indoor and outdoor，Three kinds of structure with copper conductor and aluminum conductor and busbar wall bushing without a conductor，And have a regular and fouling resistance type two categories of products.
（三）產品制造依據Product manufacturing basis
高壓穿墻套管性能符合GB12944.1-91《高壓穿墻套管技術條件》、GB12944.2《高壓穿墻套管尺寸與特性》的規定。
High pressure wall bushing Performance conforms to GB12944.1-91 High pressure wall bushing technology conditions and GB12944.2 High pressure wall bushing size and characteristics.
二、主要技術參數 Main technical parameters
（一）使用環境
1.戶內套管Indoor bushing
a)環境溫度不高于+40℃，不低于-40℃；
The environment temperature is ≤ + 40 ℃, ≥- 40 ℃
b)海拔不超過1000m;The altitude does not exceed 1000 m;
c)相對濕度月平均不大于90%；
The average ≤ 90% relative humidity;
d)周圍空氣應不受腐蝕性和可燃氣體、水蒸汽等明顯污穢；
Ambient air should not be obvious, such as corrosive and flammable gas, water vapor and filth.
e)無經常性的劇烈振動。No recurrent severe vibration.
2.戶外套管Outdoor bushing
a)環境溫度不高于+40℃，不低于-40℃；
The environment temperature is ≤ + 40 ℃, ≥- 40 ℃
b)海拔不超過1000m;The altitude does not exceed 1000 m;
c)風速不大于34m/s；Wind speed is not more than 34 m/s;
d)產品的使用環境的空氣污穢程度，按GB5582分為0、Ⅰ、Ⅱ、Ⅲ、Ⅳ等五級；
Products using the environment air polluted degree, accord to GB5582 into 0, Ⅰ, Ⅱ, Ⅲ, Ⅳ;
e)無經常性的劇烈振動。No recurrent severe vibration.
（二）型號說明 Model specification
CWB—戶外-戶內圓導桿穿墻瓷套管Indoor-outdoor circular guide wall porcelain bushing；
CWC—戶外-戶內穿墻瓷套管Indoor-outdoor wall porcelain bushing；C—抗彎破壞負荷等級Bending failure load level，12kN（加強型enhanced）。
CWL—戶外-戶內鋁導體穿墻套管Indoor-outdoor aluminum conductor wall bushing