Why choose dual-core photovoltaic cable? In-depth interpretation of the power transmission core of solar power generation system

In today's increasingly popular photovoltaic power generation systems, cables are not only simple current conduction media, but also core components that directly affect the overall efficiency and safety of the system. Although the traditional single-core cable can complete the basic power transmission function, it is somewhat stretched in the face of complex outdoor environment.

The dual-core photovoltaic cable made of high-purity copper and designed with high-density cross-linked polyethylene (XLPE) insulation layer can maintain excellent current stability under high temperature, low temperature and even strong ultraviolet irradiation, greatly reducing the energy loss caused by excessive resistance. This structure not only enhances the safety redundancy of the line, but also improves the reliability and life of the system to a certain extent.

the size difference is very important | application adaptation analysis of 4 mm² and 6 mm² models

For different types and sizes of photovoltaic projects, choosing the right cable cross-sectional area is a prerequisite for achieving optimal cost performance. Generally speaking,4 mm² specifications are very suitable for small and medium-sized household roof power stations or small industrial and commercial distributed systems, saving initial investment while ensuring sufficient current carrying capacity.

and in some large-scale ground centralized or commercial roof projects, it is more inclined to choose 6 mm² large cross-section cable , this kind of product has a stronger continuous load bearing capacity, especially suitable for the application scenario of long sunlight irradiation time and high average daily output power. Reasonable allocation can not only reduce the hidden cost of voltage drop, but also reserve sufficient space for future expansion.

The significance behind the color coding specification | Details of the functional division of the black and red MC4 connectors

In addition to the quality of the wire body itself, the design of the joint is also an important link that cannot be ignored. MC4 series male and female plug terminals have been widely adopted by the industry as standardized accessories, with a unified color management method, making engineering installation more intuitive and convenient.

According to the general standard, red usually indicates the positive input direction , which symbolizes the main channel of energy flow; while black represents the negative circuit or grounding protection path , which is responsible for forming a complete closed circuit and playing a certain role in safety protection. This visual classification method makes on-site debugging simple and clear, and also provides convenience for subsequent operation and maintenance.

Reliable operation in harsh outdoor environments | In-depth analysis of the waterproof, sunscreen and anti-aging mechanism of the product

Considering that most photovoltaic systems are deployed in open spaces, extremely severe requirements are placed on their supporting electrical components. Ordinary PVC materials without special treatment, vulnerable to the impact of strong direct sunlight oxidation reaction and loss of elasticity and even cracking.

To this end, the manufacturer has specially developed a new type of weather-resistant polymer sheath material, which has excellent UV protection performance and a short-term temperature limit value of up to 120 ℃, and has passed the relevant test certification of the national authority on the fire rating. The accelerated aging test shows that the samples still maintain satisfactory physical and mechanical properties and show strong adaptability under the condition of simulating three years of natural light.

Practical case teaching | How to correctly install and deploy a high-performance photovoltaic transmission network

a successful set of solar power supply device can not be separated from the scientific and rigorous design layout and strict implementation of the operation process. First of all, the most reasonable wiring direction should be determined by comprehensively considering the building orientation, shadow shielding and other factors, and as far as possible away from the boiler room or other facilities with large heat emission to prevent the local temperature from causing fire risk.

secondly, it is recommended to set a support point at intervals of no more than two meters for trunking fixation, especially at bending and turning points, to strengthen stabilization measures to avoid friction and damage caused by wind vibration. Do not rush to start the machine after all laying is completed. Please be sure to use professional instruments to carry out comprehensive inspection, including but not limited to insulation resistance measurement, contact resistance inspection and other contents until all parameters are confirmed to meet the standards.