PROJECT CASE
Guangda Electric Is A Professional Organization Dedicated To Solving Power Quality Problems Of Users
LED energy-saving lamps, billboards, and large-sized LED screens cause transformer noise to reach up to 65dB, cable temperature to reach 83°C, and neutral line current to be 368.
2025-02-13
How to deal with the issue of excessive neutral current in LED and advertising display screens?
User: Shenzhen Guangshuo Environmental Protection and Energy Saving Co., Ltd. Name: Zero Sequence Filter Model: ZSFGD-150/0.4 Load: Fluorescent lamps and energy-saving lamps, UPS power supply, as well as office equipment such as computers, printers, and copiers. Before filtering: 1. High cable temperature, fire hazard: 75℃ 2. Large neutral line current: 73A 3. Neutral line current: over 90% is 3rd harmonic. After filtering: 1. Neutral line cable temperature reduced: from 75℃ to 42℃; 2. Neutral line current reduced: from 73A to 12A; 3. Significant energy-saving effect: reduced loss by 6kW.
2025-02-13
How to solve the heating issue of the mall's neutral line and transformer?
In the small commodity market at the south gate of Zhuzhou City, two transformers are experiencing abnormal neutral line currents, leading to overheating of the neutral line cables and transformers, resulting in blackening or tripping phenomena, which pose a safety hazard for electricity usage. To address this issue, a set of low-voltage neutral line current absorbers (ZSFGD) is designed for the transformers and electrical locations on each floor, to filter out zero-sequence harmonics, absorb the current on the neutral line, improve power quality, and ensure electrical safety.
2025-02-13
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Guangdong Guangda Electric Co. Ltd.
Tel：18028173868
E-mail：gdgddq@126.com
Web：www.gd96.com
Add ：Building 3, No. 613, Xingtan Shuixiang Avenue, Gaozan Village, Xingtan Town, Shunde District, Foshan City, Guangdong Province