66kv Power Cable with XLPE Insulaton/ Lead Sheath

                                            TBEA 66kV-500kV HV&EHV XLPE CABLE

Our company can manufacture cables and wires with the highest voltage & largest cross-section in China. The main products are 500kV and below XLPE power cables, PVC insulation power cables, cables for electrical equipment, rubber sheath cables, special cables, bare conductors, totally more than 400 types and 20,000 specifications. Among them, 66kV - 500kV HV&EHV XLPE cables are leading products, 110kV XLPE cables were the first to be certified by "Two Ministry",220kV XLPE cables were commissioning successfully in domestic transmission industry, 500kV XLPE cables were put into operation firstly in China.

1.Standards:
  1) IEC 60060:2010 High Voltage Testing Technology;
2) IEC 60228:2004 Insulated Cable Conductor;
3) IEC 60229:2007 Test on Extruded Cable Sheath With Special Protective Function;
4) IEC 60230:1966 Impact Test on Cable and Cable Accessories;
5) IEC 60071:2006 Insulation Co-ordination;
6) IEC 60287:  Rat ed Continuous Current Calculation of Cable;
7) IEC 60811:2001 Non-electrical Test & Material Test;
8) IEC 60859:1999 Jointing of Cable and GIS with Rated Voltage of 72.5kV and Above;
9) IEC 60949:2008 calculation of permissible short circuit thermal stability current considering the effect of non-insulated heat;
10) IEC 60885:1988 Electrical Test Methods for Power Cable;
11) IEC 60183:1990 High Voltage Cable Select Guide;
   IEC 62067:2006 Extruded Insulated Power Cable;
12) Test Method and Requirement with Rated Voltage of 150kV(Um=170kV) to 500kV (Um=550kV);
13) IEC60840:2004 Extruded Insulated Power Cable Test Method and Requirement with Rated Voltage of 30kV(Um=36kV) to 150kV (Um=170kV)

Meanwhile,our company can also manufacture cable products according to other standards such as ASTM, AS and BS Standard.

2.The advantages of the corrugated aluminum sheath and semi-conductive cushion layer
1)The Aluminum sheath contains the following functions:
a. Withstanding the short-circuit current
b. Water proof
c. Protecting the insulated core
2)The functions (characteristics) of the semi-conductive cushion layer:
a. Cushion the pressure from the aluminum sheath to the insulated core which is caused by the external force and avoid damages.
b. The semi-conductive water proof tape adopted by our company has the characteristics of good elasticity and uniform resistivity, and the four-layer lapping can absorb the expansion of insulated core caused by temperature rising during operation, and bring insulated screen into good contact with aluminum sheath
c. Avoid damages to the insulated screen when welding the aluminum sheath.
d. The function of longitudinal water proof: When external factors cause damages to the aluminum sheath, the cushion layer can absorb the water permeating into the cable immediately, and then block the breakage by expanding, which can stop the water entering into and longitudinally spreading along the cable.
3)The characteristics of aluminum sheath
a.We adopt the cold rolling sheet aluminum welding method which not only has uniform thickness, but also immensely decreases the defects to aluminum sheath caused by impurities and micropores.
b. The highest temperature during argon arc welding process can reach 700ºC (welding point). Because the argon and helium are blown continuously to the welding point which makes the heat dissipation faster and avoids the insulated core being scalded (the actual measurements prove that the temperature of the surface of cushion layer at the welding point is 60ºC, and the surface of outer core screen is  33ºC). The argon and helium belong to the inert gas which can protect the aluminum at the welding point from oxidation, and guarantee the consistency of resistivity and mechanical strength at the aluminum sheath welding point.
c. When we adopt the aluminum sheath argon arc welding method, we can adjust the interval between the aluminum sheath and insulation screen at will, and this can make the insulation screen, semi-conductive cushion layer and aluminum sheath connected very closely, which avoids the corona discharging caused by the unconnected capacitive charging capacitor.
d. The welding line has a high mechanical strength, and the fact that there are no differences between the welding line and other parts on aluminum sheath has been approved by authorities.

3.Advanced Manufacturing Equipment

Our company owns 186 sets of cable & wire producing facilities imported from France, Finland, Germany, Japan, USA, Austria etc., among which there are 220kV, 500kV and 750kV EHV XLPE power cable production line from Germany and Finland, frame stranders from CEECO, Canada, reel stranders from SKET, Germany, double-layer sheath plastic extruder from TROESTER, Germany, aluminum sheath extruder from UK.



4.Advanced Testing Equipment



The company introduced the world's advanced level wire & cable production and testing equipment, such as 750kV series resonant system, partial discharge tester and 2800kV impulse test device from HAEFELY Co., Switzerland, and established 750kV and below HV test shield hall which are advanced both home and abroad, equipped with HV SCHERING bridge, DV-6E spectrum analyzer, online micro pore impurity tester, torque rheometer, etc., which meets the requirements of 500kV and below XLPE cables or large cross-sectional overhead conductors' design, manufacture and test.


Center test room is consist of physical and chemical test room, combustion test room & measuring room, and covers an area of 1,500 sq.m., equipped with 101 various kinds of first class inspection equipments, among them the torque rheometer, low temperature test chamber manufactured in Germany, crystalline phase analyzer manufactured in America and HV Schering Bridge manufactured in Switzerland are all the word class.





If you are interested in our company and products, please contact us.

Fax: +86-538-7222255


   TBEA             Always Reliable