Three Core Copper Conductor XLPE Insulation 26/35KV 3Cx300 Electrical Cable
Powering Critical Infrastructure: Shanghai Shenghua’s 35kV XLPE Cable Solutions for High-Voltage Reliability
In high-stakes energy transmission systems—from urban substations to industrial megaprojects—voltage stability and operational safety define success. Shanghai Shenghua Cable Group engineers uncompromising resilience with its 26/35kV 3Cx300 XLPE Insulated Power Cable, featuring triple-shielded copper conductors and industrial-grade armoring for mission-critical power networks.
Engineering Excellence: The Shenghua Difference
Multi-Layered Defense Architecture
- Conductor: Class 2 stranded copper (IEC 60228-compliant) ensures optimal conductivity and flexibility, minimizing resistive losses at 300mm² cross-sections
- EMI Shielding: Dual extruded semi-conductive layers + copper tape screen neutralize electromagnetic interference from transformers or heavy machinery
- Insulation: XLPE core withstands 250°C short-circuit spikes (5 sec) and continuous 90°C operation—40% higher thermal tolerance than PVC alternatives
- Sheathing: Flame-retardant PVC (FR-PVC) options comply with EN 60332-1-2, suppressing fire propagation in tunnels or industrial plants
Performance Benchmarks: Where Shenghua Dominates
| Parameter |
3×300 Specification |
Industry Impact |
| Current Load |
525A (air) / 520A (soil) |
Powers heavy machinery in steel mills/data centers |
| Test Voltage |
91kV/5min (IEC 60502-2) |
Exceeds 35kV safety margins by 160%
|
| Bending Radius |
15× cable diameter |
Simplifies installation in congested conduits |
| Temperature Range |
-20°C to +90°C (fixed) |
Reliable in Arctic mines or desert solar farms |
| Conductor Resistance |
0.0601 Ω/km (20°C) |
Reduces energy loss by 18% vs. aluminum cores
|
Applications Demanding 35kV XLPE Cables
- Urban Power Grids
Direct-buried Shenghua cables (STA/SWA armoured) prevent soil compression and rodent damage in subway networks and hospitals, with LSOH sheathing reducing toxic fumes during fires
- Heavy Industry
Copper conductors handle 300mm² cross-sections for crane systems and compressors in steel mills—supporting 600A+ short-circuit currents
- Renewable Energy Farms
XLPE insulation resists salt/UV degradation, while FR-PVC sheathing protects against abrasion in wind/solar trench installations
Why Global Engineers Trust Shenghua
- 40+ Years of Expertise: OEM customization for voltages (3.6kV–36kV), armoring (STA/SWA), and sheaths (PVC/LSOH/FR-PVC)
- Global Certifications: KEMA, CE, RoHS, GB/T 12706.2, with 12-month PICC-backed warranty
- Rapid Deployment: Wooden/steel drum packaging with moisture-proof sealing; 7–15-day delivery for urgent projects
- Sustainability: RoHS-compliant materials reduce environmental impact without compromising durability
Construction
Conductor : Stranded Copper Conductor Class2
Conductor Screen: Semi-conductor
Insulation : XLPE insulation
Insulation Screen: Semi-conductor
Screen : Copper tape
Sheath : PVC or Flame-retardant -PVC
Insulation Color :Red,Yellow,Blue
Outer sheath Color:Black.
Applications
The medium voltage cable can be choosed for laying indoors and outdoors. Able to bear certain traction during installation, but not external mechanical forces. Laying single core cable in magnetic ducts is not allowed.
Standards
International: IEC 60502-2, IEC 60228, VDE,ASTM,BS
Cable Type :CU/XLPE/CTS/PVC-26/35 KV 3Cx300 SQMM
Other standards such as BS,DIN and ICEA upon request
Technical data
Rated voltage: 26/35(40.5)KV
Maximum Conductor Temperature: under normal (90 OC), emergency (130OC) or short circuit no more than 5 s (250℃) conditions.
Min. Ambient Temp. 0 OC, after installation and only when cable is in a fixed position
Min. Bending Radius: 20 x cable O.D for single core
15 x cable O.D for multi core
Certificates
CE, RoHS, KEMA and more others at request
Commercial Items: FOB Shanghai Port or CIF port as per request. MOQ: 800m
Payment terms: 30% T/T before production, 70% T/T before delivery
Packing: Wooden Iron drum, whole steel wooden drum if required by client side.
Specifications
| Nom. Cross-section of conductor |
Strands No./Dia. Of Conductor |
Insulation Thickness |
Sheath Thickness |
Approx. O.D. |
Approx.
Weight
|
Max. D.C Resistance of Copper Conductor (20 ℃) |
Testing Voltage A.C |
Current Rating |
| mm2 |
pc/mm |
mm |
mm |
(mm) |
kg/km |
Ω /km |
kV/5min |
In air (A) |
In soil(A) |
| 3 × 50 |
10/2.52 |
10.5 |
3.5 |
78.6 |
5491 |
0.387 |
91 |
180 |
190 |
| 3 × 70 |
14/2.52 |
10.5 |
3.6 |
82.3 |
6649 |
0.268 |
91 |
220 |
230 |
| 3 × 95 |
19/2.52 |
10.5 |
3.7 |
85.9 |
7744 |
0.193 |
91 |
265 |
275 |
| 3 × 120 |
24/2.52 |
10.5 |
3.8 |
89.2 |
8833 |
0.153 |
91 |
305 |
315 |
| 3 × 150 |
30/2.52 |
10.5 |
3.9 |
92.8 |
10008 |
0.124 |
91 |
345 |
355 |
| 3 × 185 |
37/2.52 |
10.5 |
4.0 |
96.5 |
11381 |
0.0991 |
91 |
390 |
400 |
| 3 × 240 |
48/2.52 |
10.5 |
4.2 |
101.6 |
13408 |
0.0754 |
91 |
455 |
460 |
| 3 × 300 |
61/2.52 |
10.5 |
4.3 |
106.6 |
15520 |
.0601 |
91 |
525 |
520 |
| 3 × 400 |
61/2.97 |
10.5 |
4.6 |
114.1 |
18942 |
0.047 |
91 |
600 |
590 |
Product Tags:
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Shanghai Shenghua Cable Group PVC Sheath 3Cx300 Three Core XLPE Insulated Power Cable Images
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