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Reasons for Damage to Winter Wire and Cable and Preventive Measures

2017-12-28 14:52:21

Winter cold, many construction workers in the laying of wire and cable installation time will find that usually good quality wire and cable products, often there are some hair line hardening, insulation jacket off loss and so on, many construction workers think it is the wire and cable products themselves Appeared the quality question, but the cable manufacturer also insisted that the product has been tested at the factory, is a qualified product, often leads to misunderstanding between the two parties.

In fact, what is not the quality of the product itself, but due to the cold in winter. Wire and cable products, most of the outer skin of ordinary plastic (PVC) or rubber, when they are in the sub-zero environment will be hardened, the entire wire and cable product line will be hard and brittle, leading skin may be a slight external force Will appear off under the damage. In wintertime, especially in the north, outdoor temperatures are often below zero and the surface temperature may be lower. Therefore, if the wire and cable products are placed outdoors or directly on the ground, it is likely that the product will fall off. So, how do we prevent the winter wire and cable skin shedding phenomenon? Take the following measures from all stages -
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1, the factory transport: In the product factory loaded on the means of transport, you need to keep warm and protective measures. Such as using a closed transport to prevent the product from being directly exposed. Put a soft cushion, such as a futon or other soft foam, on the product. Do not hold it loosely while loading, and avoid bending the product Big.

2, arrived at the destination or the construction site, the best product suppliers stationed personnel supervision, to prevent the product unloading rough behavior.

3, Storage: It is best to store the product indoors, while laying a layer of isolation layer on the surface of the storage, such as wood, bedding, foam, etc., to prevent the product from cold and damp, to prevent direct contact with the product to the ground wire Cable skin scratching phenomenon, gently.

4, laying the product installation: the best choice in the afternoon warm under the conditions of homework, if conditions can be used before the heater and other equipment in advance to the product "warm-up", so that products to achieve the best performance status. If it is buried, in the cable trench in advance covered with a protective layer, such as fabric, foam. If you wear a tube, have to ensure that the line inside and outside the smooth tube, will not scratch the wire. In particular, pay attention to the iron pipe, the purchase of qualified quality iron pipe, poor quality iron pipe may have a large number of sharp convex point, it is likely to scratch the wire sheath.

5, Pudong brand low-temperature cable selection, in strict accordance with national standards "GB / T2951.14-2008" test requirements for testing, placed in the environment at minus 35 ℃ 16h, and then the mechanical properties of the test, the bending of its repeated bending , The insulation and sheathing elongation and tensile test test, through the rate of 100%, low temperature cables Puguang has a very low temperature resistance, can be cold in the external environment, the insulation and jacket skin can still be guaranteed No cracks, no breaking state.

Winter cold, many construction workers in the laying of wire and cable installation time will find that usually good quality wire and cable products, often there are some hair line hardening, insulation jacket off loss and so on, many construction workers think it is the wire and cable products themselves Appeared the quality question, but the cable manufacturer also insisted that the product has been tested at the factory, is a qualified product, often leads to misunderstanding between the two parties.
 
In fact, what is not the quality of the product itself, but due to the cold in winter. Wire and cable products, most of the outer skin of ordinary plastic (PVC) or rubber, when they are in the sub-zero environment will be hardened, the entire wire and cable product line will be hard and brittle, leading skin may be a slight external force Will appear off under the damage. In wintertime, especially in the north, outdoor temperatures are often below zero and the surface temperature may be lower. Therefore, if the wire and cable products are placed outdoors or directly on the ground, it is likely that the product will fall off. So, how do we prevent the winter wire and cable skin shedding phenomenon? Take the following measures from all stages -

1, the factory transport: In the product factory loaded on the means of transport, you need to keep warm and protective measures. Such as using a closed transport to prevent the product from being directly exposed. Put a soft cushion, such as a futon or other soft foam, on the product. Do not hold it loosely while loading, and avoid bending the product Big.

2, arrived at the destination or the construction site, the best product suppliers stationed personnel supervision, to prevent the product unloading rough behavior.

3, Storage: It is best to store the product indoors, while laying a layer of isolation layer on the surface of the storage, such as wood, bedding, foam, etc., to prevent the product from cold and damp, to prevent direct contact with the product to the ground wire Cable skin scratching phenomenon, gently.

4, laying the product installation: the best choice in the afternoon warm under the conditions of homework, if conditions can be used before the heater and other equipment in advance to the product "warm-up", so that products to achieve the best performance status. If it is buried, in the cable trench in advance covered with a protective layer, such as fabric, foam. If you wear a tube, have to ensure that the line inside and outside the smooth tube, will not scratch the wire. In particular, pay attention to the iron pipe, the purchase of qualified quality iron pipe, poor quality iron pipe may have a large number of sharp convex point, it is likely to scratch the wire sheath.

To make a long story short, in the winter, wire and cable will become very weak and we need to "take care".

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