Considerations for Solar Cable Installation

Considerations for Solar Cable Installation

Constructing and laying photovoltaic cables is pivotal in solar installations. To ensure seamless operation and avert any disruptions, addressing potential complications during the laying process is essential. The key to mitigating such issues lies in meticulous cable construction and installation. In this discussion, we delve into the vital considerations and precautions that need emphasis during the construction of photovoltaic cables to ascertain optimal performance and reliability.

1. Addressing Eddy Current Issues Originating from Current

During the installation of photovoltaic cables, various methods such as steel brackets, steel protective pipes, and cable clips are employed. However, any steel (iron) closed loop formed around the photovoltaic cable can induce eddy currents, notably prominent in high-current photovoltaic cable systems. It’s crucial to implement measures during construction to avoid the formation of a steel (iron) closed circuit around the cable, mitigating the generation of eddy currents.

2. Mechanical Damage from Cable Rotation

Photovoltaic cables with substantial specifications pose challenges in transportation and laying due to their large outer diameter and stringent turning radius requirements. Excessive turning angles can lead to internal mechanical damage and compromise the cable’s insulation strength, causing faults. Adjusting the connection length of the mid-phase cable head ensures stability and prevents external force impact, proving effective in operations.

3. Grounding Concerns in Medium and Low Voltage Photovoltaic Cables

Unequal three-phase loads in public medium and low voltage photovoltaic cables necessitate consideration of the metal sheath’s grounding. It’s vital to ensure no grounding at any point and maintain routine induction voltage below 100V. All cable joints in the network should have grounding electrodes (nets), with the metal sheath reliably grounded.

4. Prioritizing Safety

Safety remains paramount, necessitating precautionary measures to avoid electric shocks during photovoltaic cable installation.

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