接线盒制造商
FRCABLE 光伏接线盒 - 中国领先的光伏设备制造商，我们提供太阳能电池板连接的安全可靠方案。
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FAQs
Q: What is a PV junction box?
A: A PV junction box is a connector between solar cell modules and a solar charge control device. It is a cross-field comprehensive design integrating electrical design, mechanical design, and material science. It also contains diodes that keep the power flow going in one direction and prevent the hot spot effect.
Q: How does a junction box work?
A: A junction box works by housing wiring connections that branch out to different electrical components. It makes wire access easy, protects wiring from environmental factors, and prevents short circuits or fire hazards.
Q: What are the benefits of using a PV junction box?
A: 1) It prevents UV rays, water, ozone, corrosion, oil, etc. from damaging the solar panel. 2) It regulates the heat and offers reliable long-term safety. 3) contains diodes that keep the power flow going in one direction and prevent the hot spot effect.
Q: What are some common problems or issues with PV junction boxes?
A: 1) Detachment from the module back sheet; 2) Poorly sealed or closed boxes that allow moisture or dust to enter; 3) Corrosion of wires or terminals due to environmental factors; 4) Arcing due to bad or degraded wiring that causes overheating or fire hazards.
Q: How can I troubleshoot or repair a faulty PV junction box?
A: 1) Trace out the individual branch wiring backward from the concentrator and check for any obvious damage or accidental disconnections.
2) Measure the voltage on the solar array at the combiner box, load switches, fuses, and breakers to see if the proper voltage is present at the load’s connections.
3) Remove the fuses from each module or sub-array string and record their open-circuit voltage and current readings. Compare them with their expected values and identify any abnormal ones.