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DXN-Q indoor high-voltage live display device (forced interlocking type) or GSN-Q
The DXN (GSN) series indoor high-voltage live display device consists of three sensors and a display unit connected by wiring. It is suitable for indoor high-voltage electrical equipment with a rated frequency of 50 Hz and a rated voltage of 40.5 kV or less, and can both indicate the energized status of the circuit and, when used in conjunction with an electromagnetic lock, forcibly lock switch handles, valves, and other components. Both the live display function and the forced-locking function are controlled by the same high-voltage signal; however, the two circuit systems are independent of each other and do not interfere with one another. As long as the high-voltage circuit remains energized, even if both the display circuit and the locking circuit fail simultaneously, the electromagnetic lock will remain engaged, thereby preventing misoperation and unauthorized entry into energized compartments. Applicable standards: DL/T 538 “High-Voltage Live Display Device”; DL/T 593 “Common Technical Requirements for Standards of High-Voltage Switchgear and Control Equipment”; JB/T 10305 “Technical Specifications for Indoor Organic-Material Post Insulators for 3.6 kV to 40.5 kV High-Voltage Equipment”; GB/T 7354 “Partial Discharge Measurement.”
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