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GW5户外隔离开关系列

主要用途 Mostly purpose
GW5型户外高压隔离开关是用于三相交流50Hz的户外高压电气设备,供线路在有电压无负载的情况下进行分合,以及对被检修高压母线、断路器等电气设备与带电的高压线路进行电气隔离之用,也可用于开合小的电容或电感电流。在闸刀处于正常分闸位置时,可提供一个符合安全要求的经缘距离。广泛使用于35~110kV变电站。

GW5 type outdoor high-voltage disconnection switch is used in AC three-phase outdoor high-voltage electric equipment with frequency of 50Hz, applied for circuitry’s switching on or off in condition with voltage but no load, electric disconnecting between electric equipment under test(such as high voltage busbar, circuit breaker)and charged high voltage circuitry, as well as switching on or off of small capacitance or inductive current. When the switch blade is in normal switching off powition, it can offer an insulation spacing complying with the safety requirement. It is widely used for35-220kV power substation.

主要技术参数 Technic Parameter
项目 Item 单位 Unit GW5-40.5 GW5-72.5 GW5-126 GW5-145
额定电压 Rated voltage kV 40.5 72.5 126 145
额定电流 Rated current A 630/1250/1600/2000
额定频率 Rated frequency Hz 50
隔离开关
Disconnecting switch
额定峰值耐受电流 Rated peak value withstand current KA 50/80/100
额定短时耐受电流 Rated short time withstand current KA 20/31.5/40
额定短路持续时间 Rated short circuit duration time s 4
Ⅰ型地刀
Type ground blade
额定峰值耐受电流 Rated peak value withstand current KA 25
额定短时耐受电流 Rated short time withstand current KA 10
额定短路持续时间 Rated short circuit duration time s 4
Ⅱ型地刀
Type ground blade
额定峰值耐受电流 Rated peak value withstand current KA 100
额定短时耐受电流 Rated short time withstand current KA 40
额定短路持续时间 Rated short circuit duration time s 2

外形及安装尺寸 Externality & Build in Dimension