FZN25-12RD/630A Indoor High-voltage AC Vacuum Load Switch, 10kV cabinet-mounted load switch

FZN25-12 Indoor High Voltage Load Switch A three-phase AC indoor high voltage switching equipment with rated voltage of 12kV and frequency of 50Hz, it is mainly used for ring network power supply, terminal distribution stations and industrial power scenarios of 10kV power system. This equipment includes models such as FN25-12D and FZRN25-12D, which have the functions of making and breaking load current, closed-loop current and no-load transformer, and are suitable for electrical facility protection and control in scenarios such as industrial and mining enterprises and substations. This switch is equipped with both manual and electric operating mechanisms, and supports remote control system requirements. The FN25-12D/T125-31.5 model adopts a vacuum load switch-fuse combination structure, which can withstand short-circuit current through the grounding switch. Its fuse combination design has both short-circuit protection and load control functions, and its protection performance is more economical and reliable than traditional circuit breakers, and is suitable for scenarios such as box-type substations and dual radial power supply units. Technical parameters include rated current of 630A, dynamic stable current of 50kA, 4-second thermal stable current of 20kA, which meet the safety requirements of power distribution systems for equipment.

Model meaning: FZ (vacuum load switch) N (indoor) 25 (design serial number) — 12 (rated voltage kV) D (grounding switch) / T (spring operating mechanism) 630 (rated current A) — 20 (rated short-time withstand current kA). The main product models include FZN25A-12/T630 vacuum load switch, FZN25A-12D/T630 vacuum load switch with grounding switch, FZRN25A-12/T200 vacuum load switch-fuse combination electrical appliance, FZRN25A-12D/T200 vacuum load switch-fuse combination electrical appliance with grounding switch, as well as FZN25-12R/T200 vacuum load switch-fuse combination electrical appliance, FZN25-12RD/T200 vacuum load switch-fuse combination electrical appliance with grounding switch and FZRN25-12D/T125-31.5 and other models. The rated voltage of this series of products is 12kV, and the rated frequency is 50Hz. The rated current of the load switch is 630A, and the rated short-time withstand current is 20kA; the rated current of the combination electrical appliance is 200A, and the rated short-time withstand current is 31.5kA. The standard operating conditions of the product are that the upper limit of ambient air temperature is +40℃, and the lower limit can be -10℃, -25℃ or -40℃. The altitude shall not exceed 1000m. The daily average value of relative humidity shall not be greater than 95%, and the monthly average value shall not be greater than 90%. The seismic intensity is lower than level 8. The surrounding air shall not be polluted by corrosive or flammable gases, water vapor and other harmful gases. Technical parameter broadcast and editing The basic electrical parameters of FZN25-12 series load switches include rated voltage of 12kV and rated frequency of 50Hz. For load switches, the rated current is 630A, its rated short-time withstand current (4S) is 20kA, and the rated peak withstand current is 50kA. For combination electrical appliances (with fuse protection), their rated current is 200A, and the rated short-time withstand current is 31.5kA. This series of switches can break load current, closed-loop current, no-load transformer and cable charging current, and have the ability to close short-circuit current. The operating modes of FZN25-12 series switches include manual and electric, and support complete set cabinet installation and wall installation. Its normal operating environment conditions are: the upper limit of ambient air temperature is +40℃, and the lower limit is -25℃; the altitude shall not exceed 1000m; the daily average value of relative humidity shall not be greater than 95%, and the monthly average value shall not be greater than 90%; the seismic intensity is lower than level 8; the surrounding air shall not be obviously polluted by corrosive or flammable gases, water vapor and other substances.