Clarify the confusing points of the use of solar photovoltaic wires

Clarify the confusing points of the use of solar photovoltaic wires

In recent years, the technology of the solar photovoltaic wires industry has developed faster and faster, the power of a single module has become larger and larger, and the current of the string has become larger and larger, and the current of high-power modules has reached more than 17A.

In terms of system design, the use of high-power components and reasonable over-provisioning can reduce the initial investment cost and kWh cost of the system. The cost of AC and DC cables in the system is not low.

How should the the use of solar photovoltaic wires design and selection be done to reduce the cost?

DC cables are installed outdoors. It is generally recommended to select photovoltaic special cables that have been irradiated and cross-linked. After high-energy electron beam irradiation, the molecular structure of the insulating layer material of the cable changes from linear to three-dimensional network molecular structure, which is resistant to temperature.

The grade is increased from non-cross-linked 70°C to 90°C, 105°C, 125°C, 135°C, and even 150°C, which is 15-50% higher than the current carrying capacity of cables of the same specification, and can withstand severe temperature changes and chemical erosion.

Used outdoors for over 25 years. When selecting the DC cable, it is necessary to select products with relevant certifications from regular manufacturers to ensure the needs of long-term outdoor use.