4-Core Galvanized Steel 1×25mm2 Armored Copper Cable
XLPE Insulated Cable
XLPE insulation of medium voltage power cables below 30 kV with XLPE insulation has very good electrical, mechanical and thermal properties in medium voltage networks. This insulating material has excellent chemical resistance and also has cold resistance. Due to various advantages, the XLPE insulation type has greatly replaced the traditional traditional paper insulation type in many fields. XLPE insulated medium voltage cables are designed to be longitudinally waterproof. Compared with PVC and paper insulated cables, XLPE insulated medium voltage power cables have the advantage of low dielectric coefficient. The good performance of XLPE insulated cables remains constant over a long temperature range. These cables can be laid on the ground, in the air or in pipes.
Physical and Electrical Characteristics
| No.cores x |
Insulation |
Sheath |
Outer Ø |
weight |
Current ratings in air 30℃ |
Current ratings buried 20℃ |
| cross-sec. |
thickness |
thickness |
approx. |
approx. |
| |
Nominal |
| Phase |
Neutral |
value |
| mm² |
mm |
mm |
mm |
mm |
kg / km |
A |
A |
| 3×4+1×2.5 |
0.7 |
0.7 |
1.8 |
12.7 |
277 |
37 |
47 |
| 3×6+1×4 |
0.7 |
0.7 |
1.8 |
13.9 |
363 |
47 |
60 |
| 3×10+1×6 |
0.7 |
0.7 |
1.8 |
16.1 |
527 |
64 |
81 |
| 3×16+1×10 |
0.7 |
0.7 |
1.8 |
18.6 |
766 |
85 |
106 |
| 3×25+1×16 |
0.9 |
0.7 |
1.8 |
22.2 |
1140 |
113 |
137 |
| 3×35+1×16 |
0.9 |
0.7 |
1.8 |
24.6 |
1475 |
139 |
164
|
Constructions:
Product Name flame retardant MI cable BTTZ/BTTQ/BTLY fireproof mineral insulated cable
Product standard DIN VDE 0295 and IEC 228 standard twisted copper wires,GB5023.6-2012 and company standard
Core 1 2 3 4 5 3+1 3+2 4+1 Cores
Working life <25years
Type of conductor copper,class 5
Material of conductor fine strands of oxygen-free Copper
Material of insulation mineral compound (MgO)
Color of core insulation Red/White/Blue/Black/Green/Yellow(Optional)
Material of Sheath low smorke halogen free Polyolefine(LSZH/LSOH PO)
Voltage 600~1000 VOLTS
Advantage Down to depths 500 mtrs
Section 0.25mm2~95.00mm2/AWG1~AWG14
Minimum bending radius Cable installtion allowed bending radius should no less than 6 times of cable wideth
Flame resistance pass GB/T18380.1-2001 test and GB5023.6-2012
Isolated sheath Aluminum(AL)
Cable installation
To avoid damage, XLPE insulated medium voltage power cables should be carefully placed and installed. It must be ensured that the cables are not pulled over hard or sharp edges. The end of the cable must be sealed and waterproof. After cutting the length, both ends must be sealed immediately.
The recommended installation depth is 60 to 80 cm. Single-core cables are usually arranged in a trilobal or triangular shape.
For installation in ducts, the heat insulation effect of the air space between the cable and the inner wall of the duct should especially be considered. The inner diameter of the conduit should be at least 1.5 times the diameter of the cable.
