Cold shrinkage construction:
A cold shrink cable accessories reduce excessive human factors. During construction, the cold shrink can be actively shortened by removing the plastic wire core inside, and the uneven shortening of the insulation pipe will not occur due to human factors during the shortening process. Then the quality of construction was ensured.
B shrinkage shortening is a process of shortening from one end to the other according to the program, which cannot be changed to ensure that no bubbles appear during the shortening process.
C in hazardous situations in petrochemical industry. The construction of cold shrinkage avoids the use of heat sources and becomes safe.
Heat shrink construction:
The thermal shrinkage of A is greatly affected by the construction level. Uneven heating time can lead to uneven shortening and thickness of the insulation pipe, and even some foundations are not shortened, resulting in uneven shortening and thickness. Thin insulation pipes may experience issues such as breakdown.
During the heating process of thermal shrinkage, due to inadequate control of the degree of heating, conditions such as burning of the insulation pipe occur, greatly affecting the insulation function of the insulation pipe.
During the heating process, C shrinkage can be heated from one end to the other, or from the center to both ends, resulting in the appearance of bubbles during the shortening process.
D is to prevent the use of heat sources such as open flames in local areas, such as petrochemical and chemical industries. Assuming that the use increases the risk, it can lead to serious incidents.
In the process of application
1) Cold shrinkable cable accessories will adhere to synchronous Cellular respiration with the Thermal expansion of the cable, so that the cable and accessories always adhere to an excellent combination.
2) The heat shrinkable cable accessories will not be modified accordingly with the thermal expansion and cooling of the cable, and prolonged operation may cause gaps between the cable and the accessories, leading to accidents.
Quality comparison
1) The inherent benefits of cold shrinking have led to the continuous use of cold shrinking cable accessories towards high voltage, and at that time, there were already 110KV cold shrinking cable accessories.
2) The inherent drawbacks of heat shrink cable accessories make them frequently used below the 35KV voltage level for a long time, and at the 35KV voltage level, heat shrink cable accessories have become an important reason for frequent accidents in cable work.