Overview:
Indoor AC high-voltage earthing switch (hereinafter referred to as earthing switch) is applicable to the rated operating voltage 3~35kV, three-phase AC 50Hz grounding device. Product performance in compliance with GB1985-1989 requirements of the AC high voltage isolate switch and earth switch.
Product features:
Indoor AC high-voltage earthing switch with advanced design, technology and reliable performance, simple structure, convenient installation and debugging advantages, can be used as maintenance of high-voltage electrical equipment grounding. Earthing switch closing with higher capacity, so as to avoid wrong operation do not apply damage to equipment. Earthing switch with the master switch, handcart and mechanical locking mechanism between the doors to meet "five-prevention" feature.
Structure and working principle:
1, the main structure
Earthing switch with stand, earthing knives Assembly and static contact, sensors, shaft, crank, compression spring, soft, conductive casing connections. Note: The bracket by bending of thin steel plate welded into parts, and the rest are assembled parts.
2, how it works
When the operation when the operating mechanism earthing switch closing, spindle as a moment to overcome the resistance moment, closing direction driven crank rotation, and grounded on the knife handle by pressure springs dead point, compression spring release energy, enables earthing switch quickly closing, in the closed position. Earthing earthing knives in the knife components by disk spring and static contact flange (knife-edge) solid and reliable access.
Break brake operation, the spindle force moment overcome moments the main force and spring force, opening direction driven crank rotation, and the earthing knives compression spring through dead center, end of the compression spring energy storage to prepare for the next closing.
Earthing switch and switch speed and who is independent of the operating speed.
Audited Supplier 
){kind=link}