XLPE Insulated PVC Sheathed SWA MV Cable

You can choose Beida Group as your manufacturer and supplier of XLPE Insulated PVC Sheathed SWA MV Cable. Due to their steel wire armor protection, the cable possesses core advantages of strong tensile strength and good resistance to external mechanical forces. They are suitable for scenarios requiring tensile strength, such as high drop heights and vertical installations. These cables are applicable for power transmission in transmission and distribution networks or industrial installations.

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Product Description

Beida Group has over 30 years of experience to offer XLPE Insulated PVC Sheathed SWA MV Cable, we can be your manufacturer and supplier, offering customized services.

Product Structure

Xlpe Insulated Pvc Sheathed Swa Mv Cable

XLPE Insulated PVC Sheathed SWA MV Cable is composed of a T1R copper conductor , XLPE insulation, PVC wrapping tape Steel wires armour and PVC sheath.

Conductor: Copper or Aluminium conductor , round standed or Shaped, Class 2 to IEC 60228

and GB/T 3956-2008.

Insulation: Cross-linked polyethylene insulation，Insulation thickness, material property shall be as per IEC 60502-2 and GB/T 12706.2，GB/T 12706.3.

Conductor shielding: The conductor shielding should be composed of extruded semiconducting non-metallic material, which should be tightly bonded to the insulation.

Insulation shielding: The insulation shielding should consist of a combination of a non-metallic semiconductive layer and a metallic layer. Each insulated wire core should be directly extruded with a non-metallic semiconductive layer that is tightly bonded to the insulated wire core or can be peeled off. Then, a metallic shielding layer should be overlapped and wrapped around the non-metallic semiconductive layer, and it should comply with the provisions of IEC 60502-2, GB/T 12706.2, and GB/T 12706.3.Inner coverings: The inner coverings shall be extruded. The materials shall be suitable for the operating temperature of the cable and compatible with the insulating material.

Steel wires armour: In the multicore cables, the armour shall be applied on an inner covering complying steel wires . The single-core cables for use on a.c. systems shall consist of non-magnetic steel wires.

Outer sheath:PVC sheath， Sheath thickness, material property shall be as per IEC 60502.2 and GB/T 12706.

Flame-retradant cable: Flame-retardant PVC outer sheath material shall be used. The flame retardant grades can be classified into three categories: Bunch A, B, and C.

Performance parameter

Rated voltage: 3.6/6 kV to 18/30 kV；26/35 kV

Test voltage: The power frequency test voltage should be 3.5U0, and the test should last for 5 minutes without any breakdown.

rated voltage U0/U	maximum voltage Um	test voltage KV
3.6/6	7.2	12.5
6/10	12	21
8.7/15	17.5	30.5
12/20	24	42
18/30	36	63
26/35	42	90.5

Maximum operating temperature of conductor: 90 ºC

Short circuit temperature: +250 ºC

insulation thickness：

rated voltage U0/U	insulation thickness：
3.6/6	2.5
6/10	3.4
8.7/15	4.5
12/20	5.5
18/30	8.0
26/35	10.5

Comparison between steel wire armored (YJV32, CU/XLPE/PVC/SWA/PVC) and steel tape armored (YJV22, CU/XLPE/PVC/STA/PVC) medium voltage power cables

project	Fine steel wire armor	Double steel tape armor (gap wrapping)	core difference
Core mechanical properties	Outstanding tensile strength, moderate compressive strength, and good flexibility	High compressive strength, low tensile strength, and average bending performance	Steel wire armored power cables have high tensile strength; steel tape armored power cables have excellent compressive strength
laying method	Vertical, high drop, underwater, overhead, large span	Direct burial, conduit, tunnel (low tensile environment)
focus of protection	It is resistant to tensile damage and impact, and has good moisture and corrosion resistance	Resistant to heavy pressure, puncture by sharp objects, and biting by rodents	YJV32 is suitable for dynamic loads, while YJV22 is suitable for static loads
Process and Cost	The process of fine steel wire armor is complex, the material cost is high, and the overall price is even higher	The steel tape armor technology is mature and relatively low cost	When budget is limited and there is no tensile demand, YJV22 is preferred
bend radius	Relatively smaller (due to good flexibility of steel wire strands)	Relatively larger (steel tape wrapping is prone to warping)	YJV32 is more adaptable to laying in confined spaces

Selection suggestions:

1. If the scenario primarily involves withstanding pressure (such as direct burial, underground utility tunnels), and there is no significant tensile force or high drop height, steel tape armor (YJV22, CU/XLPE/PVC/STA/PVC) is recommended for its higher cost-effectiveness.

2. If vertical laying, large span, underwater or high drop height is involved, and axial tensile force needs to be withstood, steel wire armor (YJV32, CU/XLPE/PVC/SWA/PVC) should be preferred to ensure long-term operational safety.

3. Both must match the voltage level of the medium-voltage system, conductor cross-section, and protection requirements of the laying environment (special requirements such as corrosion resistance and flame retardancy can be customized additionally).