Shandong Yanggu Cable Factory Haohui Cable teaches you to distinguish between photovoltaic cables and ordinary cables
ShandongYanggu Cable FactoryHome Haohui cable teaches you to distinguish between photovoltaic cables and ordinary cables:The thermal market for photovoltaic cables is still in progress. Photovoltaic projects are emerging across the country. There is a great demand for photovoltaic cables. Due to the recent rise in copper and aluminum prices, other raw materials also have an upward trend, and the construction cost of photovoltaic projects has also increased. Today Yanggu HaohuiCableTeach you to distinguish between photovoltaic cable and ordinary cable:
At present, national projects are frequently launched. In order to save costs, many contractors do not choose special cables for solar energy systems, but choose ordinary PVC cables to replace photovoltaic cables. Obviously, this will greatly affect the service life of the system.
Photovoltaic cables are often exposed to sunlight, and solar systems are often used in harsh environmental conditions, such as high temperature and ultraviolet radiation. In Europe, sunny days will result in on-site temperatures of up to 100°C for solar systems. At present, we can use a variety of materials such as PVC, rubber, TPE and high-quality cross-link materials, but unfortunately, even rubber cables rated at 90°C or PVC cables rated at 70°C are not competent for the harsh environment encountered by dedicated photovoltaic cables.
What is the difference between photovoltaic cables and ordinary cables?
This type of cable is similar to other cables, including conductor, insulation layer, sheath, necessary filler, etc. The characteristics of photovoltaic cable is determined by its cable special insulation material and sheath material, we call it cross-linked PE, after irradiation accelerator irradiation, the molecular structure of the cable material will change, so as to provide its various aspects of performance.
During installation and maintenance, cables can be routed on the sharp edges of the roof structure, while the cables must withstand pressure, bending, tension, cross-tensile loads and strong impacts. If the strength of the cable sheath is not enough, the cable insulation layer will be seriously damaged, which will affect the service life of the entire cable, or cause problems such as short circuit, fire and personal injury.
Radiation cross-linked materials with high mechanical strength. The cross-link process changes the chemical structure of the polymer, the meltable thermoplastic material is converted to a non-meltable elastomer material, and the cross-link radiation significantly improves the thermal, mechanical and chemical properties of the cable insulation material.
It is necessary and necessary to use special photovoltaic cables for photovoltaic projects.
This product is based on 2 PfG1169 and is suitable for single-core flexible cables (wires) with a maximum allowable DC voltage of 1.8kV (core to core, ungrounded system) and DC side in photovoltaic system. This product is suitable for use under Class II safety level. The ambient temperature for cable operation is up to 90 ℃. Multiple cables can be used in parallel.
1. Voltage class AC:0.6/1kV,DC1.8kV;
2. Allowable working voltage (AC)0.7/1.2kV, allowable working voltage (DC)0.9/1.8kV;
A. 3. Ambient temperature -40 to 120 ℃ (mobile or fixed);
A. 4. The finished product not only has excellent weather resistance, UV resistance and ozone erosion resistance, but also can withstand a wider range of temperature changes (-40 to 120 ℃), with excellent penetration resistance, performance in line with 2 PfG1169;
A. 5. Products to obtain TUV certification.
What are the main points of purchasing wires and cables? Let's take a look. As the main carrier of power transmission, wire and cable are widely used in electrical equipment, lighting circuits, household appliances, etc. Its quality directly affects the quality of the project and the safety of consumers' lives and property. There are many wire varieties on the market, and appropriate wires should be used according to their own power load.
What are the precautions for wires and cables? Let's take a look. Common cable faults: wire surface markings-according to national standards, the wire surface should have continuous markings of the manufacturer's name, product model and rated voltage. This helps to find the manufacturing plant in time when there is a problem during the use of the wire, and consumers should pay attention to this when buying the wire.
There are many kinds of wire and cable products for electrical equipment on the market, which are difficult for ordinary consumers to distinguish. So what are the main categories of wire and cable products? What are the product naming principles of wire and cable? The editor brings you a brief understanding of relevant content knowledge.
The wires and cables for electrical equipment are mainly used for internal or external connection of electrical equipment, low-voltage transmission lines and various electrical signal transmission lines. Generally speaking, except for power cables, communication cables and magnet wires, most insulated wires and cables are classified as wires and cables for electrical equipment.
Electrical equipment with wire and cable is a large class of wire and cable products, a wide range of applications, many varieties, many series, large output, process type complex. The rated voltage of wires and cables for electrical equipment is low, and the working voltage is 450/750v and below, which is not more than 0.6/1kv. The working voltage of signal and instrument cables is usually 300/500v and below. The ampacity of the cable is determined according to the requirements of the cable.
Low voltage power cable winter pay attention to matters? As the weather gets colder and colder, manufacturers of low-voltage power cables usually become more difficult, which brings inconvenience to construction. Here are some precautions for winter construction. Let us take a brief look.