Aerial insulated cables

Aerial insulated cables of rated voltages up to and includin

　　Introduction

　　The products are manufactured by extruding a conductor screen layer, an insulated layer of rough-weather-adaptive XLPE or rough-weather-adaptive black HD-PE or PVC, and an insulation screen layer over the compacted copper/aluminium conductor(no conductor screen layer and insulation screen layer for cables of rated voltage 1kV),with the advantage of simple construction, and excellent mechanical,physical and electrical property as well as fine performance of anti-creeping- discharge, rough-weather-adaptive and creepage-proof. Compared with bare conductor, the product can be laid more closely to save the line gallery, and have less voltage-drop. Above all, the products installed reduce power accidents to insure lives safety.

　　Standard

　　The products shall comply with the standards GB12527-90 and GB14049-93.

　　Applications

　　The products fit for transmitting line and distributing line of rated voltage 1kV, 10kV and 35kV in tall buildings, traveling development area and wooded tract.

　　Operating characteristics

　　1.The rated voltage of cable has three classes: a.0.6/1kV b. 10kV c.. 35kV。

　　2. Continuous permissible operating temperature:

　　PVC Insulation:70℃

　　PE Insulation: 70℃

　　HDPE Insulation: 75℃

　　XLPE Insulation: 90℃

　　3. Max.Temperature of cable under short-circuit(5sec.Max.Duration)

　　PVC Insulation: 160℃;

　　PE Insulation: 130℃

　　HDPE Insulation: 150℃;

　　XLPE Insulation: 250℃;

　　4. Laying temperature of cable not less than -20℃

　　5. Operating ambient temperature of cables:-40~40℃,Relative humidity in rainy season not less than 90%

　　6. Permissible bending radius of cable:

　　cable for rated voltage up to and including 0.6/1kV:

　　bending radius not less than 4Dfor cable diameter<25mm

　　bending radius not less than 6Dfor cable diameter≥25mm

　　cable for rated voltage 10 kV and 35 kV;

　　single-core cable:20(D+d)±5%;

　　multi-core cable:15(D+d)±5%;

　　Note:D-Over all Diameter of cable

　　d-Over all Diameter of conductor