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Based on the feedback from our users, the editor has compiled a list of key questions regarding the FSC disturbance-free frequency quick-switching cabinet. Let’s take a look at these questions to gain an immediate understanding of this cabinet. 1. What is disturbance-free rapid switching? Answer: Ensure a rapid switch-over without downtime or disruptions for sensitive loads, as well as with no shocks, while maintaining continuous operation of the production process. 2. In what scenarios is it generally used? Answer: Dual-power supply configuration is suitable for enterprises with high requirements for continuous production, such as those in the petrochemical, coal mining, smelting, and semiconductor manufacturing industries. 3. What voltage levels can it be used for? Answer: 35kV, 10kV, 0.69kV, and 0.4kV. What types of cabinets are used for 10kV, and what type of cabinet is used for 35kV? A: For 10kV, it’s the standard KYN28-12; for 35kV, it’s the standard KYN61-40.5. 5. Can it be connected directly in parallel with the switchgear on site? Answer: It can be connected directly to the cabinet. 6. How long does the entire switching process take? Answer: The switching time is about 20ms. 7. Can it ensure that the inverter does not shut down? Answer: It can ensure that frequency conversion equipment at all voltage levels, both high and low, remains operational without shutdown. 8. What are the startup methods for the quick switchgear in case of grid failures? Answer: There are loss-of-voltage start, manual start, protection start, false trip start, no-current start, reverse-power start, frequency-voltage start, and fitting start. 9. What is parallel switching? What is series switching? Answer: Closing first and then opening is parallel switching, while opening first and then closing is series switching. 10. Can fast switching be achieved in a system that has both inductive and capacitive loads? Answer: Yes, it’s possible. 11. In a power distribution system, can generators be rapidly switched on? Answer: Yes, it’s possible. 12. Can it be switched if the capacity of the backup power supply is insufficient? Answer: The intelligent offloading feature can be used to ensure the continuity of critical loads.