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PROJECT CASE

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High pressure compensation device case

Zero sequence filter device case

Filter compensation cabinet engineering case

Device level filter case

Active filtering typical case

Intelligent filter compensation module case

How to deal with the issue of excessive neutral current in LED and advertising display screens?

Time：

2019-01-05

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.

User: Shenzhen Guangshuo Environmental Protection 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 third 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.
 
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