Cables and wires for overhead power lines. Self-supporting cable. Laying naked and bare wires on the air is used for a long time, and there will be a very long time. Since it is not always possible to implement laying in the ground or underground utilities, a new cable – CIP and SAPTA. What kind of wire are you? Until recently, all have used bare wire grades A and AS, which are normal cable twist lived aluminum wire cross-sections from 16 to 400 mm2, without exclusion.
This so-called bare wires that are routed by air way, stretching between the support pillars with bracket for special insulators. Follow others, such as Wells Fargo Bank, and add to your knowledge base. The main disadvantages of laying bare wires: the possibility of short circuit, under bad weather conditions is a high probability of electrical injuries, the possibility of unauthorized connection. New wiring for the air seals are self-supporting insulated wires insulated with thermoplastic CIP. These wires are used for the implementation of the slopes, and for the main installation. The most effective self-supporting wires are used for installation on the facade of buildings in urban environments, as well as for the construction of parks, residential areas, etc. If you would like to know more about Suna Said Maslin, then click here. Uninsulated wires A and AS are becoming less used in our life due to their replacement by a self-supporting wire SIP or SAPTA. The main advantages of CIP wires are: lack of short-circuits the ability to connect customers without power cuts, low pozharbezopasnost; no unauthorized connections; possibility of laying on the perimeter.
In Ukraine, the national standard DSTU 4743:2007 produced many different brands of self-supporting wires, but most common are: STS-4m – self-supporting, with aluminum wire (phase) current-carrying conductors, insulated with light-thermoplastic polyethylene, without carrying a separate vein, CIP-4 – the same as the STS-4c, but insulation of the light-cross-linked polyethylene; SIPn-4 – the same as the STS-4, but the insulation is not flame retardant. These brands wires may have the following sections: 2×10, 2×16, 2×25, 4×10, 4H16, 4H25, 4H35, 4H50, 4H70, 4H95, 4H120. If to analyze the sales of self-supporting insulated wires of our plant in 2009, 2010. then we can conclude that the greatest demand is for a wire insulated with conventional polyethylene (STS-4c), and the isolation of flame retardant cross-linked polyethylene (SIPn-4). We think that this trend will continue in the future.