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GW4户外隔离开关系列

主要用途 Mostly purpose
GW4型户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35~220kV变电站。

GW4 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 GW4-70.2 GW4-70.2 GW4-126 GW4-126G GW4-145
额定电压 Rated voltage 40.5 72.5 126 126 145
额定电流 Rated current 630 1250 2000 2500 630 1250 2000 2500 4000 630 1250 2000 2500 630 1250 1250 2000 2500
额定短时耐受电流(有效值)
Rated short time withstand current(Effective value)
20 31.5 40(46) 20 31.5 40(46) 20 31.5 40(46) 20 31.5 20 31.5 40(46)
额定峰值耐受电流(有效值)
Rated peak value withstand current(Peak value)
50 80 100(104) 50 80 100(104) 50 80 100(104) 50 80 50 80 100(104)
额定短时工频耐压(有效值)
Rated short time power frequency(Effective value)
对地 Over the ground 80 140 185(230) 185 375
断口 Fracture 110 160 210(265) 210 315
额定雷电冲击耐受电压(峰值)
Rated lightning impulse withstand voltage(Peak value)
对地 Over the ground 185 325 450(550) 450 650
断口 Fracture 215 375 520(630) 550 750
接线端额定水平拉力
Wire the horizontal pulling force of end amount
490(735) 735 735 735 960
单极重量 Monopole weight 80 200 240 300 300

外形及安装尺寸 Externality & Build in Dimension