Cu/XLPE/CAS/PVC 66kv 110kv 132kv 220kv XLPE Insulated Underground
Power Cable1.DescriptionThe products are mainly complying with IEC 60840 IEC 62067
standard, also can be produced according to OEM requirements and
other standards, such as bs standard, DIN standard, ASTM standard,
etc.Voltage grade is up to 220kv, cross-section area can be up to 2500
sqmm (copper or aluminiun conductor). Conductor long-time operating
temperature is 90 degrees. In short circuit, conductor highest
temperature should be not more than 250 degrees.2. Brief Construction:Single core Copper or aluminium conductor
Conductor screen
XLPE insulation
Insulation screenCorugation aluminum sheathPVC or PE sheath3. Laying conditions For lyaing under ground with large different
altitude, be able to bear external machanical force and moderate
pulling force4. Manufacturing Features
ConductorThe conductor shall be round compact stranded copper or aluminum
wires. The resistance of each conductor at 20ºC shall be in accordance with IEC 60228 standard. The surface of
the conductor shall be clean and free from any foreign
particles, which may contaminate the insulation or cause high
electrical field stress in the conductor screen.
Conductor screen, Insulation and Insulation screen
Extrusion of conductor screen, insulation and insulation screen
shall be by single pass, triple extrusion method. Conductor screen, XLPE main insulation and
insulation screen shall be produced by triple extrusion and dry curing.
Conductor screen shall consist of semi-conducting tapes applied
over the conductor and a continuous layer of extruded semiconducting XLPE compound covering
the entire surface area of the conductor and firmly bonded to the inner surface of the insulation.
The insulation shall be XLPE and shall be applied by extrusion and
cross-linked to form a compact and homogeneous layer in accordance with the Standards specified.
The insulation material shall be of Super Clean polyethylene mixture suitable for cross-linking
(XLPE).
Insulation screen shall consist of a layer of extruded
non-strippable semi-conducting thermosetting compound.
After triple extrusion, the insulated cores shall be degassed to
remove the by-product in the core from the cross-linking process.
Bedding
Semi-conducting water-blocking tapes (swellable tapes) over the
insulation screen shall be applied to prevent longitudinal water penetration between insulation screening
and metallic sheath. The swellable tape shall cover the entire surface area of the
insulation screen.
Metallic sheath
Corrugation Aluminum sheath shall be applied over the
semi-conducting water blocking tape to accommodate the required radical water tightness and protect the
insulation core.
Outer sheath
The outer-sheath shall be of an extruded layer of black color
PVC.It shall be highly chemical resistance and withstand the mechanical
force during fabrication, transit,installation and operation.
Outer conductive layer
A coating of Graphite shall be applied over the over sheath to
carry out D.C. Voltage Test.Model and Name of product
Model | Name |
Copper core | Aluminium core |
YJLW02 | YJLLW02 | XLPE insulated corrugated aluminium sheath or welding corrugated
aluminium sheath PCV sheath power cable |
YJLW03 | YJLLW03 | XLPE insulated corrugated aluminium sheath or welding corrugated
aluminium sheath PE sheath power cable |
YJLW02-Z | YJLLW02-Z | XLPE insulated corrugated aluminium sheath or welding corrugated
aluuminium sheath PVC sheath longitudinally water blocking power cable |
YJLW03-Z | YJLLW03-Z | XLPE insulated corrugated aluminium sheath or welding corrugated
aluminium sheath PVC sheath longitudinally water blocking power cable |
FAQ
(1).When can I get the price?
We usually quote within12 hours after we get your inquiry. If you
are very urgent to get the price,please call us or tell us in your
e-mail so that we will regard your inquiry priority.
(2).How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our
quality. Sample is free, but the freight charge should be paid.
(3).How long can I expect to get the sample?
After you pay the freight charge and send us confirmed files, the
samples will be ready for delivery in 3-10 days. The samples will
be sent to you via express and arrive in 3~10 days. You can use
your own express account or prepay us if you do not have an
account.
(4).What about the lead time for mass production?
Honestly, it depends on the order quantity and the season you place
the order.The best record we keep is delivering 10 kilometers cable
within a week. Generally speaking, we suggest that you start
inquiry two months before the date you would like to get the
products at your country.
XLPE (cross-linked polyethylene) insulated cable refers to an
electrical cable that has conductors insulated with XLPE material.
XLPE is a thermosetting polymer known for its excellent electrical
properties, making it a popular choice for various applications in
the power transmission and distribution industry.
Insulation Material: XLPE is a type of polyethylene that is
chemically cross-linked. This cross-linking process improves the
thermal and mechanical properties of the insulation, making it more
robust and durable compared to non-cross-linked materials.
Electrical Performance: XLPE insulation offers high dielectric
strength, low dielectric losses, and excellent insulation
resistance. This allows for efficient power transmission while
minimizing energy losses. 
