FZN25-12RD/630A Indoor High-Voltage AC Vacuum Load Switch, Load Switch for 10KV Switchgear Cabinets
Contact Info
- Xiangyang Industrial Zone, Liushi Town, Yueqing City,
- 李经理
- 15167417505
- 864640886@qq.com
FZN25-12 Indoor High-Voltage Load Switch: A three-phase AC indoor high-voltage switchgear with a rated voltage of 12kV and a frequency of 50Hz, mainly applied in ring network power supply, terminal distribution substations and industrial power scenarios of 10kV power systems. This equipment includes models such as FN25-12D and FZRN25-12D, and has the functions of switching load current, closed-loop current and no-load transformers, suitable for the protection and control of electrical facilities in scenarios such as industrial and mining enterprises and substations. This switch is equipped with both manual and electric dual operating mechanisms, supporting the needs of remote control systems. The FN25-12D/T125-31.5 model adopts a vacuum load switch-fuse combination structure, which can withstand short-circuit current through the earthing switch. Its fuse combination design integrates short-circuit protection and load control functions, and has more economical and reliable protection performance than traditional circuit breakers, suitable for scenarios such as box-type substations and dual-radiation power supply units. Technical parameters include a rated current of 630A, a dynamic stability current of 50kA, and a 4-second thermal stability current of 20kA, meeting 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 (Earthing Switch), / T (Spring Operating Mechanism), 630 (Rated Current A), — 20 (Rated Short-Time Withstand Current kA). Main product models include FZN25A-12/T630 vacuum load switch, FZN25A-12D/T630 vacuum load switch with earthing switch, FZRN25A-12/T200 vacuum load switch-fuse combination appliance, FZRN25A-12D/T200 vacuum load switch-fuse combination appliance with earthing switch, as well as models such as FZN25-12R/T200 vacuum load switch-fuse combination appliance, FZN25-12RD/T200 vacuum load switch-fuse combination appliance with earthing switch, and FZRN25-12D/T125-31.5. 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 appliance is 200A, and the rated short-time withstand current is 31.5kA. The standard operating conditions of the product are: the upper limit of ambient air temperature is +40℃, and the lower limit can be -10℃, -25℃ or -40℃. The altitude does not exceed 1000m. The daily average relative humidity is not more than 95%, and the monthly average is not more than 90%. The seismic intensity is below 8. The ambient air should not be polluted by harmful gases such as corrosive or combustible gases, water vapor, etc. Technical Parameter Broadcast and Editing: The basic electrical parameters of the FZN25-12 series load switches include a rated voltage of 12kV and a 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 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 transformers and cable charging current, and has the ability to close short-circuit current. The operating methods of FZN25-12 series switches include manual and electric, and support cabinet installation and wall installation. Their normal operating environmental conditions are: the upper limit of ambient air temperature is +40℃, the lower limit is -25℃; the altitude does not exceed 1000m; the daily average relative humidity is not more than 95%, and the monthly average is not more than 90%; the seismic intensity is below 8; the ambient air should not be significantly polluted by corrosive or combustible gases, water vapor, etc.
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