Overview
| brand | Da Zheng Electric Wire and Cable | model | JKLYJ |
| Packaging/Specifications | packing | ||
| Minimum packaging quantity | Outer diameter of conductor | 7mm | |
| Theoretical weight | 233.2kg/km | tensile strength | 5177N |
| Insulation thickness | 3.4mm | Conductor structure | 7/2.57n/mm |
| Cable outer diameter | 15.4mm | DC resistance | 0.868 Ω/km |
| purpose | Substation construction, large crossing lines | Supply method | Spot, ordering |
| Sellable region | nationwide | Shipping method | Logistics or special vehicle delivery |
| quantity | ten million | encapsulation | Iron wood shaft |
| Batch number | twenty-three thousand six hundred and twenty | ||
Product Details
Overhead insulated cableMainly used in urban and forest power grid renovation, this product has a simple structure, good use, and excellent mechanical and physical properties
Energy and electrical performance. Excellent resistance to electrical traces, surface discharge, and atmospheric conditions. At the same time, when Overhead power line is used for long-distance power transmission in suburbs, the cable inductance
The value is very low and the voltage drop of the line is small. Do not add voltage boosting measures as it has high economic benefits. Usage requirements:
1. The temperature during cable laying should not be lower than -20o
2. High and long-term allowable working temperature of cable conductors: cross-linked polyethylene insulation 90oC; High density polyethylene insulation at 75oC.
3. High temperature of cable during short circuit (long duration not exceeding 5S): cross-linked polyethylene insulation 250oC; High density polyethylene insulation at 150oC.
4. The allowable bending radius of the cable should not be less than: 20 (cable outer diameter+conductor outer diameter) -5%, mm
1、 Principle of overhead insulated cables:
The series of products for overhead insulated cables are composed of tightly pressed copper, aluminum (aluminum alloy) conductors, inner shielding layer, weather resistant insulation material, and outer shielding layer
The electric power transmission characteristics of power cables also have strong mechanical properties of Overhead power line. Compared with bare wires, this product has small laying spacing,
reliability
High, excellent atmospheric aging resistance and other characteristics.
2、 Application of overhead insulated cables:
The overhead insulated cable product is a new series of products for the transmission of electrical energy on overhead transmission lines, which is prioritized for the construction and renovation of 10kV transmission lines in the power grid
Selection. It is a series of products for line maintenance. Soft copper core products are suitable for transformer down leads.