Indoor AC Medium-Voltage Vacuum Load Switch Model Fzn21-12d/T630-20
This type of HV vacuum switch-fuse combinations widely serve in the power system for three-phase AC 10kV and 50Hz or in the urban network reconstruction, mineral & industrial enterprise, tall buildings and public facilities by coordinating with power distribution assembly, ring-network switchgear and combination-type substation. It can also function as ring-network power supply unit or terminal unit to distribute, control and protect electricity. The combinations conform to the following standards: IEC60265-1/FDIS, IEC60420, GB16926 and GB3804.
The combinations feature high breaking capacity, security and reliability, long electric endurance, frequent operation, compact volume, light weight and non-maintenance. It also has the capacity to break rated current, overload current (FZRN21-12D/T125-31.5 can break short-circuit current) and to prevent the equipment from operating under phase open. It has a visual clear-ance between open contacts. Fitted with earthing switch
With making capacity and electric-driven spring-operating
Device. It can perform teleactuation and telecontrol.
Structure feature:
1. The combinations are composed of frame, discon-nector (the current limiting fuses are fitted in the disconnector), vacuum arc-extinguishing chamber, earthing switch and spring-operating device etc (See fig. 1).
2. The combinations feature compact structure, small volume, long endurance, high capacity to make and break and convenient operation and maintenance. Fitted with spring-operating device, the vacuum switch stores energy by motor (manual energy storage also available). There are two ways for closing: Solenoid closing and manual closing. The interlock among switch disconnector, vacuum switch and earthing switch (mechanical interlock) can prevent misoperation.
Floating cable which can be applied to underwater robot equipment, either in fresh water environment or in seawater environment. It is widely used in marine exploration robot, underwater ROV UAV remote control submersible, underwater camera, underwater construction, underwater search and rescue robot, pipeline detection robot, submersible pump and the link between various underwater electrical equipment and shore based equipment; Link of signal transmission, power supply and equipment control system from underwater to water.
