The intelligent photovoltaic lightning protection DC cabinet is a function cabinet for summarizing, monitoring and protecting the DC power after the convergence of the photovoltaic combiner box. The DC lightning protection cabinet can aggregate the multiple DC inputs into one current output, and each circuit has a protection device (circuit breaker). , fuses, etc.), anti-reverse diodes, etc., and can monitor each voltage and current, and can achieve remote communication. 1. Product Features High-performance components and intelligent design. It has the advantages of high cost performance, beautiful appearance, convenient installation and use. It can monitor multiple current, voltage, power and switch status, and communicate with the monitoring system through RS485 communication interface to realize intelligent management of DC power distribution cabinet. Modular design, components adopt international or domestic famous brands, with excellent performance, safe and reliable. The internal wiring is reasonable and beautiful; the lightning protection grounding meets the technical requirements of lightning protection specifications. High breaking capacity, good thermal stability, flexible and convenient combination of electrical solutions, and practicality, can be customized according to customer needs.
2. Execution standard GB50254 "Code for construction and acceptance of low-voltage electrical installations for electrical installations"
GB4208-2008 "Shell protection grade (IP code)"
GB7251 "Low-voltage switchgear"
GB/T19064-2003 "Technical conditions and test methods for household solar photovoltaic power systems"
GB/T16895.32 Building Electrical Installations Part 7-712: Requirements for Special Installations or Locations Solar Photovoltaic (PV) Power Supply Systems
3, model description
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4, technical parameters
Electrical parameter | |
Rated operating voltage | 1000VDC |
Input Current | 160A |
Number of output channels | 1 |
Rated impulse withstand voltage | 3.5kV |
Busbar breaking capacity (mean) | 10kA |
Lightning protection parameter | |
Nominal discharge current | 20kA, 8/20μs |
Maximum flow capacity | 40kA, 8/20μs |
Protection level (3kA, 8/20μs) | ≤2000V |
Protection level (20kA, 8/20μs) | ≤2000V |
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Note: The specific cabinet size can be changed according to the user's customized plan.
6. Photovoltaic power generation system The schematic diagram of the photovoltaic power generation system and the location of the intelligent photovoltaic DC lightning protection cabinet are shown in the figure:
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7. Application field The intelligent photovoltaic DC lightning protection cabinet is applied to large-scale photovoltaic power stations and large-scale rooftop photovoltaic power generation projects. It is in the next stage of the photovoltaic combiner box, and further summarizes, monitors and protects the DC power after the convergence.
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