Discussion on Long Distance Power Supply for ELV Equipment
Given the problem that it is difficult to obtain power from ELV equipment far away from the power supply point and the long power supply distance,combined with the actual voltage input demand of DC power supply in the wide voltage input range,the range of voltage drop required by relevant codes,and under the premise of meeting the requirements for earth fault protection,short circuit protection,etc.,calculations and analyses are made to put forward the viewpoints on the distance of low-voltage power supply of ELV equipment in faraway places.
DC power supply in the wide voltage input rangevoltage lossearth fault protectionshort circuit protectionpower supply distancethermal stability calibrationsecurity equipmentDC power supply
NETL
NSTL
万方数据
