GW16/17-252 type HV disconnect switch is produced by introducing overseas technologies. It is three-pole outdoor HV electric equipment used for 110KV,50Hz HV line to switch line under no-load condition and realizes safe electric isolation for examined electric equipment. The disconnect switch has remarkable advantages of advanced structure,good corrosion resistance, stable and reliable action,highly anti-seismic performances. The product passed signature by two ministries, product technical performances can meet standards including¡¶GB1985 AC Hign-voltage Disconnect Switch and Earth Switch ¡·and ¡¶IEC129 AC Hign-voltage Disconnect Switch and Earth Switch ¡·and and requirements of relative standards with its product structure and main technical parameter reach international advance level.
Moving contact system of the product is manipulator single-arm folding type. The transmission components are sealed inside the main switch conductive tube to be not affected by external environment. Balance spring inside main switch conductive tube is used to balance gravitational torque, thus make opening and closing actions become very light and smooth. Moving contact adopts clamping structure to clamp on conductive rod of fixed contact and clamping force will be ensured by clamping spring inside the conductive tube. Using top-pressure tripping device to ensure reliable closing for disconnector which will keep good operation condition throughout under wind force, earthquake force,electric force and other external force. Main switch and earth switch are both anti-rust aluminum alloy material, both moving and fixed contacts are silver plating copper material,rotating joints have composite shaft sleeve and conductive rolling contact finger with excellent abrasion resistance,as well as very stable mechanical and electric properties.
When the attaching grounding knife switch for this disconnector under closing process, grounding knife rotate first and then straight up to insert into fixed contact. In this way, it can avoid contact bounce, and get reliable closing,as well as same dynamic and thermal stable current.
GW16 type is vertical isolation clearance and GW17 type is horizontal isolation clearance.
GW16/17-252¢ñtype product is new product developed from the basis of GW16/17-252¢ñtype item. Its operation principle is the same as GW16/17-252 type item, but structure and dimensions for specific spare parts are different. This product can only applied to less than 1600A for current grade.
CJ7A electric mechanism operate main knife switch with three-step in-line operation. CSA type manual mechanism operates earth knife switch with three phase linkage or operation in single phase.( earth knife switch of GW16/17-252¢ñtype is three phase linkage).
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