How To Identify The Quality of Photovoltaic Cables Through The Conductor, Insulation Layer And Sheath Layer?

For consumers, photovoltaic cables look the same as ordinary cables, but for electricians, this is not the case. Although they are all cables, they have different qualities. Let’s share how to pass photovoltaic cables. Cable structural factors to identify its quality. Copper conductor factors to identify the quality of photovoltaic cables Copper conductors are widely used in the cable industry, such as power cables, communication cables, special cables and household cables.

Copper conductor material: High-quality products adopt high-quality oxygen-free electrolytic annealed copper wires that meet international standards. Excellent production technology, stable transmission, anti-oxidation, low resistivity, in line with national standards. Inferior products have poor process performance, are easy to break, easy to oxidize, and have high resistivity, which affects the resistance of the conductor.

Conductor cross section: high-quality products comply with relevant international standards, DC resistance is lower than the national standard, long transmission distance, small voltage drop, and stable signal. The cross-sectional area of inferior products does not meet the requirements, so the resistance is large, the current transmitted is small, the voltage drop is large, the signal is unstable, and the cable is prone to heat, which affects safety and service life.

Identify the sheath quality factors of photovoltaic cables

The function of the outer sheath of the photovoltaic cable is to strengthen the insulation performance and protect the photovoltaic cable from mechanical damage. In order to adapt to the normal operation of photovoltaic cables in different scenarios, the outer sheath plays a key protective role. Such as fireproof cables, nylon cables, power cables, etc., their quality is closely related to their sheaths.

Sheath material: All high-quality products adopt the type of sheath material specified by international standards, with high strength and high elongation. The specified characteristics meet the requirements, such as: flame retardant, fire resistance, waterproof, acid and alkali resistance, etc.

Inferior products are made of recycled materials, or the resin content is low, or no expensive compounding agent is added to the material, the strength is low, the elongation is small, the specified characteristics do not meet the requirements, and the service life is harmful to photovoltaic cables and insulators. , easy to crack and oxidize.

Sheath thickness of photovoltaic cable:

The thickness of high-quality products is strictly in accordance with international regulations to protect the tensile and compressive strength of photovoltaic cables and effectively play the role of protective sleeves. The thickness of inferior products does not meet international requirements, which affects the service life of photovoltaic cables, endangers insulators, and is unsafe to use.

Identify quality factors of photovoltaic cable insulation

Insulation Materials:

High-quality products adopt the corresponding types and specifications of insulating materials stipulated by national standards, which have good process performance, high insulation resistance, high tensile strength, high elongation, and good temperature resistance.

Inferior products are made from recycled materials or have low resin content, or expensive corresponding additives are not added to the insulation. Insulated electronics are small, low strength, small extension, easy to generate heat, easy to crack, leakage current, unsafe to use, and short life.

Insulation thickness: The insulation thickness of high-quality products is strictly in accordance with international regulations to ensure electrical performance, safety and long service life. The insulation thickness of inferior products does not meet the requirements of the national standard, which will seriously affect the insulation performance of the cable, making it unsafe to use and short in life.

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