What is the process performance of the crosslinked cable?
Features: Soft Winding Machine,Coil Winding Machine,Wire Winding Machine,Bobbin Winding Machine ZHEJIANG KAICHENG TEXTILE MACHINERY CO.,LTD , https://www.kaichengtex.com
Cross-linked cables usually refer to the use of cross-linked materials for the insulation of the cable. The most commonly used material is cross-linked polyethylene (XLPE). The cross-linking process is a linear molecular structure of polyethylene (PE) material through a specific processing method to form a cross-linked polyethylene body-shaped network structure. The long-term allowable working charge is increased from 70°C to 90°C (or higher), and the short-circuit allowable temperature is increased from 140°C to 250°C (or higher), greatly improving the premise of maintaining its excellent electrical performance. Actual use performance.
Cross-linked cable characteristics The aging life of cable insulation material mainly depends on its heat aging life, which is determined by the speed of chemical reactions such as thermal oxidation, thermal cracking, thermal oxidative cracking, polycondensation, etc. occurring in the insulation material under hot working. Therefore, the heat aging life of the insulation material directly affects the service life of the cable. The long-term allowable working temperature of the irradiated cross-linked cable (20-30 years) measured by chemical reaction kinetic derivation and artificial accelerated thermal aging test is:
1. Power cable YJV0.6/1KV116°C
According to the rated working temperature of 105 °C derived, the heat aging life of more than 60 years.
Deduced at a rated operating temperature of 90°C, its heat aging life exceeds 100 years.
2. Overhead insulated cable JKLYJ10KV122°C
Overhead aerial cables are laid in the open air, and the environment resistance and radiation resistance of the insulating materials are more important. Irradiation cross-linked insulation materials are subjected to irradiation processing, which itself has a good ability to withstand radiation. The irradiation dose applied in the cross-linked production process leaves a large safety margin from its destruction dose. The radiation damage dose of polyethylene is 1000KGY, and the processing dose is about 200KGY. Combined with the special formula improvement, it is still radiation-crosslinked within a fairly wide range. Therefore, the radiation performance of a long-term pre-use process will be somewhat reduced. improve.
1. Using high-performance servo motor to yarn guide, make the linear velocity reach over 800m/min, even reach 1800m/min, production efficiency will multiplied and reduce cost.
2. All-round intelligent control technology instead of mechanical structure, let machine performance reach the international advanced level, it's easy and convenient for operation.
3. Intelligent tension device, active unwinding device, automatic tracking overfeeding system, assure stabilization of shaping.
4. Yarn breaking device and length count device, use encoder to detect and control speed, promise the yarn produce consistency.
5. Using brushless motor driving, adjusting forming length and trimming angle intelligently, soft edge density is controllable, ensure yarn forming density uniformity.
Technical Parameter:
Number of spindle
48 spindles
Spindle gauge
360mm
Linear velocity
200-1800m/min
Tensioner
electronic tension with clamp tension
Traverse
130mm-260mm
Slide angle
0º-60º
Rated power
400W