Flame-retardant MV Medium Voltage Cable 6kv- 26/35kv Armored Power Cable
| Voltage: | 0.6/1kV | Insulation: | PVC |
| Jacket: | PVC | No of Core: | 3 |
| High Light: | PVC Insulated MV Power Cable,Four Core MV Power Cable |
||
Flame-retardant MV Medium Voltage Cable 6kv- 26/35kv Armored Power Cable
APPLICATION
Suitable for power supply lines with flame retardant requirements, such as urban underground power grids, power station outgoing lines, and internal power lines of industrial and mining enterprises.
CONSUCTRUCTION
- Conductor: Tightly press circular conductor
- Conductor shield: Semi conductive shielding material (below 500mm ²)
- Semi conductive tape+semi conductive shielding material (500mm ² and above)
- Insulation:XLPE
- Insulation shielding: Peelable semiconducting shielding material
- Metal shielding layer: Copper Tape Copper wire (35kV, 500m ² and above)
- Filler: Non hygroscopic filling rope
- Binder Tape: Non hygroscopic straps
- Armor: 1 core: stainless steel tape 3 core: galvanized steel tape
CHARACTERISTIC
- Voltage Rating Uo/U(Um): 3.6/6(7.2)kV 6/6(7.2)kV 6/10(12)kV 8.7/10(12)kV 8.7/15(17.5)kV 12/20(24)kV 18/20(24)kV 18/30(36kV ) 21/35(40.5)kV 26/35(40.5)kV
- Temperature Rating: Maximum operating temperature of conductor:+90℃
- Operating ambient temperature: -15℃~+55℃
- Cable laying temperature:Not less than 0℃(When the ambient temperature is below 0℃, the cable should be preheated.)
- Minimum Bending Radius: Single core:15D Multicire: 12D
SPECIFICATION
(ZABC)-YJV62,(ZABC)-YJV22-18/20kV(18/30kV) Cable Structure Parameters
|
Specs mm² |
Conductor diameter mm |
Nominal thickness of insulation ±1.0mm |
Approx outer diameter of cable mm |
Approx cable weight kg/km |
|
Specs mm² |
Conductor diameter mm |
Nominal thickness of insulation ±1.0mm |
Approx outer diameter of cable mm |
Approx cable weight kg/km |
|
1×50 |
7.6±0.2 |
25.6 |
33.2 |
1630 |
|
3×50 |
7.6±0.2 |
25.6 |
67.5 |
5866 |
|
1×70 |
9.2±0.2 |
27.2 |
36.2 |
2247 |
3×70 |
9.2±0.2 |
27.2 |
71.1 |
6763 |
|
|
1×95 |
10.9±0.2 |
28.9 |
37.9 |
2585 |
3×95 |
10.9±0.2 |
28.9 |
75.2 |
7839 |
|
|
1×120 |
12.2±0.2 |
30.2 |
39.4 |
2901 |
3×120 |
12.2±0.2 |
30.2 |
79.7 |
9590 |
|
|
1×150 |
13.6±0.2 |
31.6 |
41.0 |
3254 |
3×150 |
13.6±0.2 |
31.6 |
82.9 |
10753 |
|
|
1×185 |
15.2±0.2 |
33.2 |
42.8 |
3698 |
3×185 |
15.2±0.2 |
33.2 |
86.7 |
12281 |
|
|
1×240 |
17.4±0.2 |
35.4 |
45.1 |
4365 |
3×240 |
17.4±0.2 |
35.4 |
91.9 |
14472 |
|
|
1×300 |
19.5±0.2 |
37.5 |
47.4 |
5061 |
3×300 |
19.5±0.2 |
37.5 |
96.8 |
16830 |
|
|
1×400 |
22.0±0.2 |
40.0 |
50.1 |
5954 |
3×400 |
22.0±0.2 |
40.0 |
102.9 |
19784 |
|
|
1×500 |
24.8±0.2 |
43.6 |
54.0 |
7222 |
3×500 |
24.8±0.2 |
43.6 |
111.2 |
23725 |
|
|
1×630 |
28.2±0.2 |
47.0 |
57.9 |
8794 |
3×630 |
28.2±0.2 |
47.0 |
119.2 |
28779 |
|
|
1×800 |
33.7±0.2 |
52.5 |
63.6 |
10883 |
|
|
|
|
|
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FAQ
1. What is the flame-retardant mechanism of MV armored cables?
These cables use XLPE insulation with halogen-free compounds and steel/aluminum armor to limit flame spread, complying with IEC 60332-3-24 Class B for vertical flame resistance
2. Can 26/35kV armored cables be directly buried underground?
Yes, but require sand bedding and moisture-proofing due to steel tape armor (YJLHV22 type). Avoid sharp stones during installation to prevent sheath damage
3. What’s the temperature tolerance of XLPE-insulated MV cables?
- Continuous operation: 90°C
- Short-circuit (5 sec): 250°C
- Installation limit: -20°C (preheating needed below 0°C)
4. Why choose aluminum alloy armor (YJLHV62) over steel?
- Weight reduction: 40% lighter than steel tape
- Corrosion resistance: Ideal for coastal/chemical plant
5. Are these cables suitable for mining applications?
Yes, but require enhanced mechanical protection (e.g., double steel tape) and MSHA/IEC 62258 certification
6. How does flame-retardant PVC compare to LSZH sheaths?
- PVC: Cost-effective, moderate smoke suppression
- LSZH: Lower toxicity in fires, mandatory in tunnels/hospitals
7. What tests verify cable quality?
- Partial discharge: ≤10pC at 1.5U0 (IEC 60885)
- Insulation resistance: ≥3,670 MΩ·km (20°C)
8. Can 6kV cables be used in 10kV systems?
No. Voltage rating must match system voltage (e.g., 8.7/10kV cables for 10kV networks)
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