YJV22 3x150mm2 Copper HV High Voltage Power Cable XLPE Armored 26 35kV Underground
Product Summary
Product Details
3x150mm2 High Voltage Power Cable
,HV Cable 26kV
,35kV armored copper cable
Product Description
YJV22 3x150mm² Copper XLPE Armored HV Cable 26/35kV High Voltage Underground
Cable Designation & Meaning
|
Code |
Meaning |
|---|---|
|
26/35 kV |
Rated voltage: U₀ = 26 kV (phase-to-earth), U = 35 kV (phase-to-phase) |
|
YJ |
XLPE (cross-linked polyethylene) insulation |
|
V |
PVC outer sheath |
|
22 |
Steel tape armoured (double steel tape) |
|
3×150 mm² |
Three cores, each 150 mm² copper |
Construction: Copper conductor, XLPE insulation, semi-con screens, steel tape armour, PVC sheath, three-core medium voltage power cable.
YJV22-3×150 mm² (26/35 kV) — High-Voltage XLPE Insulated Steel-Tape Armored Copper Power Cable — Specification & Engineering Data
1. Overview & Ratings. YJV22-3×150 is a high-voltage (26/35 kV) XLPE-insulated, double steel-tape armored, copper-conductor power cable, three 150 mm² compacted copper conductors (L1/L2/L3), rated 26/35 kV (Um = 40.5 kV), 50 Hz; built and tested per GB/T 12701 / IEC 60840. Designed for 35 kV primary grid transmission. Ø ≈ 78 mm, ≈ 7200 kg/km, steel drums.
2. Construction Stack (Conductor → Outer).
| Layer | Build | Wall | Diameter |
|---|---|---|---|
| Conductors (×3) | Compacted stranded Cu, Class 2, 3×150 mm² | — | ≈ 14.5 mm |
| Conductor screen | Extruded semi-conducting | — | — |
| XLPE insulation | Cross-linked polyethylene (thick) | ≈ 8.8 mm | ≈ 32 mm |
| Insulation screen | Semi-conducting + Cu tape | ≈ 0.12 mm Cu | — |
| Inner PVC bedding | PVC over cored assembly | ≈ 2.0 mm | ≈ 70 mm |
| Steel tape armor (22) | Double galvanized steel tape | ≈ 2×0.5 mm | ≈ 74 mm |
| Outer PVC sheath | PVC ST2, black, UV-resistant | ≈ 2.8 mm | ≈ 78 mm (finished) |
3. Electrical Characteristics. R ≤ 0.124 Ω/km at 20 °C (Cu 150 mm²); routine test 63 kV AC / 5 min; partial discharge ≤ 10 pC at 26 kV; insulation resistance ≥ 2000 MΩ·km; capacitance ≈ 0.18 μF/km; tan δ ≤ 0.0004 at 90 °C. Reference ampacity ≈ 230 A (free air, 25 °C).
Insulation Data
|
Property |
Value |
|---|---|
|
Material |
XLPE (cross-linked polyethylene) |
|
Nominal thickness |
10.5 mm (26/35 kV class) |
|
Long-term service temp. |
90 °C |
|
Short-circuit temp. (≤5 s) |
250 °C (Cu conductor limit per IEC 60228) |
|
Emergency overload temp. |
130 °C |
|
Routine test voltage (AC, 5 min) |
65 kV (for 26/35 kV) |
|
Type-test voltage (AC) |
91 kV (for 26/35 kV) |
|
Partial discharge test |
≤ 10 pC at 1.5 U₀ (39 kV) |
|
Tan δ (dissipation factor) |
≤ 0.004 at 20 °C |
Electrical Parameters
|
Parameter |
Value |
Note |
|---|---|---|
|
Rated voltage U₀/U |
26 / 35 kV |
GB/T 12706.2 / IEC 60502-2 |
|
Max. system voltage Uₘ |
40.5 kV |
— |
|
Test voltage AC (5 min) |
65 kV |
Routine test (26/35 kV) |
|
DC resistance @20 °C |
≤ 0.124 Ω/km |
GB/T 3956 Class 2 Cu max, 150 mm² |
|
AC resistance @90 °C (est.) |
≈ 0.158 Ω/km |
per core |
|
Capacitance (approx.) |
≈ 0.20 µF/km |
core to screen |
|
Inductive reactance (approx.) |
≈ 0.11 Ω/km |
at 50 Hz, 3-core armoured |
|
Current rating in air (30 °C) |
295 A |
3-core, 26/35 kV (derated from lower voltage due to larger insulation thickness) |
|
Current rating buried (20 °C) |
260 A |
direct buried, 3-core |
|
Current rating in conduit (30 °C) |
245 A |
3-core |
|
Short-circuit current (1 s, Cu, 250 °C) |
≈ 15.0 kA (15000 A) |
150 mm² Cu |
|
Frequency |
50/60 Hz AC |
— |
Reference values: 150 mm² Cu at 295 A, 3-phase 35 kV → max balanced load ≈ 17.9 MVA. Voltage drop at 295 A ≈ 46.6 V/km per core (≈0.13% per km at 35 kV).
4. Thermal & Mechanical. 90 °C continuous conductor temperature; 250 °C short-circuit (≤ 5 s); 105 °C overload short duration; operating ambient −40~+50 °C; lay ≥ 0 °C. Double steel tape armor provides crush protection for direct burial in 35 kV grid trenches.
Temperature Characteristics
|
Property |
Value |
|---|---|
|
Max. conductor operating temp. |
90 °C (continuous) |
|
Max. short-circuit temp. (≤5 s) |
250 °C (Cu conductor) |
|
Emergency overload temp. |
130 °C |
|
Min. installation ambient temp. |
0 °C (PVC sheath); below 0 °C pre-heating required |
|
Service ambient range |
−20 °C to +90 °C (with PVC sheath) |
|
Fire survival |
Standard (flame retardant single cable) |
Fire Performance (YJV22 — Standard)
|
Property |
Value / Requirement |
|---|---|
|
Flame retardant |
IEC 60332-1 (single cable, passes) |
|
Halogen content |
Contains halogen (PVC sheath & XLPE) |
|
Smoke density |
Standard (non-low-smoke) |
|
Corrosivity |
Corrosive (PVC) |
|
Fire survival (circuit integrity) |
Not applicable (standard version); use NH-YJV22 for circuit integrity |
5. Installation Practice & Handling. Bend ≥ 15 × OD ≈ 1170 mm fixed. Use HV cold-shrink / heat-shrink terminations rated 26/35 kV. Certified HV personnel only — 35 kV jointing requires specialized training. At 7200 kg/km, heavy steel drums require mechanical handling.
Mechanical & Installation Parameters
|
Parameter |
Value |
Remarks |
|---|---|---|
|
Minimum bending radius |
≥ 15 × OD → ≈ 1320 mm at Ø88 mm |
static installation |
|
Max. pulling tension |
15000 N |
Cu conductor, use proper pulling grips |
|
Direct burial |
Excellent (steel tape armour protects from mechanical damage) |
use warning tape |
|
Conduit ID |
≥ 1.5 × OD → ≥ 132 mm; use 150 mm or larger |
— |
|
Fixing |
cable clamps, tray, direct buried |
— |
|
Impact resistance |
High (steel tape armour) |
— |
|
Water resistance |
Good (PVC sheath + armour) |
not watertight; use lead-sheathed for submerged |
|
UV resistance |
Good (black PVC, outdoor rated) |
— |
|
Termination note |
Cu conductors — standard compression lugs or mechanical lugs; requires 35 kV class terminations (cold-shrink or heat-shrink) |
strip length 35–40 mm per core |
6. Typical Service Applications. 35 kV primary grid transmission, industrial primary substations, large plant feeders, urban ring main units, wind/solar farm main collector circuits — high-voltage power distribution.
7. Testing & QA Regime. Routine: conductor DC resistance, 63 kV AC / 5 min withstand, partial discharge ≤ 10 pC at 26 kV, insulation resistance. Type: impulse voltage 200 kV, tan δ at 90 °C, bending test, heating cycle, dimensional check.
Cable Parameters
| YJV22-3×150 mm² (26/35 kV) — High-Voltage XLPE Insulated Steel-Tape Armored Copper Power Cable — Full Parameter Sheet | ||||
| HV power cable · Cu conductor / thick XLPE insulation / Cu tape screen / inner PVC / double steel tape armor (22) / outer PVC · 3×150 mm² · 26/35 kV · 90 °C · GB/T 12701 / IEC 60840 · finished Ø ≈ 78 mm | ||||
| Section | Parameter | Value | Unit | Remarks / Standard |
| 01 · Identification | ||||
| Cable type | YJV22 — XLPE insulated, steel tape armored, PVC sheathed, Cu conductor | — | HV power transmission | |
| Rated voltage (U0/U) | 26/35 (Um=40.5) | kV | High-voltage power | |
| Number of cores | 3 × 150 | — | 3-phase (L1/L2/L3) | |
| Conductor material | Annealed copper | — | Class 2 compacted per GB/T 3956 | |
| Insulation material | XLPE (cross-linked polyethylene) | — | 90 °C rated, triple-layer extrusion | |
| Armor type | Double steel tape (22) | — | Mechanical / crush protection | |
| Outer sheath material | PVC (ST2), black | — | UV / weather protection | |
| Standard | GB/T 12701 / IEC 60840 | — | HV XLPE cable | |
| Shielding | Cu tape screen over insulation | — | Corona / partial discharge control | |
| 02 · Conductor (Copper) | ||||
| Conductor type | Compacted stranded copper | — | Class 2 per GB/T 3956 | |
| Conductor area | 3 × 150 | mm² | 3-phase power | |
| Stranding construction | 30 × 2.52 mm (approx.) | — | Compacted round | |
| DC resistance @ 20 °C | ≤ 0.124 | Ω/km | Cu 150 mm² max per GB/T 3956 | |
| Conductor screen | Extruded semi-conducting | — | Stress control at conductor | |
| Conductor weight per km | ≈ 4050 | kg/km | 3×150 Cu | |
| 03 · Insulation & Screening | ||||
| Insulation type | XLPE (cross-linked polyethylene) | — | 90 °C rated | |
| Insulation thickness | ≈ 8.8 | mm | 26/35 kV level (thick) | |
| Insulation screen | Extruded semi-conducting + Cu tape | — | Cu tape ≈ 0.12 mm | |
| Inner sheath (bedding) | PVC | ≈ 2.0 | Over cored assembly | |
| Steel tape armor | Double galvanized steel tape | ≈ 2×0.5 | 22 armor | |
| Outer PVC sheath | PVC ST2, black | ≈ 2.8 | UV / weather resistant | |
| Finished outer diameter | ≈ 78 | mm | Overall | |
| 04 · Electrical | ||||
| Rated voltage (U0/U) | 26/35 | kV | High voltage | |
| Max system voltage (Um) | 40.5 | kV | Temporary overvoltage | |
| DC resistance @ 20 °C | ≤ 0.124 | Ω/km | Cu 150 mm² | |
| Insulation resistance | ≥ 2000 | MΩ·km | XLPE — very high | |
| Routine test voltage (AC) | 63 kV / 5 min | — | Power-frequency withstand | |
| Partial discharge test | ≤ 10 pC at 26 kV | — | HV cable requirement | |
| Capacitance | ≈ 0.18 | μF/km | XLPE HV | |
| Dielectric loss (tan δ) | ≤ 0.0004 at 90 °C | — | HV quality | |
| 05 · Thermal | ||||
| Max continuous conductor temp. | 90 | °C | XLPE rated | |
| Short-circuit temp. | 250 | °C | Max 5 s duration | |
| Overload temp. | 105 | °C | Short duration | |
| Ambient operating range | -40 ~ +50 | °C | Outdoor / buried | |
| Laying temperature | ≥ 0 | °C | Pre-heat below 0 °C | |
| 06 · Mechanical | ||||
| Min bending radius (fixed) | ≥ 15 × OD ≈ 1170 | mm | Armed HV cable | |
| Min bending radius (flexed) | ≥ 20 × OD ≈ 1560 | mm | Repeated flexing | |
| Crush resistance | Good | — | Steel tape armor | |
| Tensile strength | Per GB/T 12701 | — | Installation pull | |
| 07 · Ampacity | ||||
| Air ampacity (3×150 Cu) | ≈ 230 | A | 25 °C ambient (est.) | |
| Buried ampacity | ≈ 215 | A | Direct burial, 25 °C soil | |
| Free air current | ≈ 250 | A | Open tray | |
| 08 · Installation | ||||
| Laying methods | Tray, direct burial, duct, trench | — | HV transmission | |
| Terminations | HV cold-shrink / heat-shrink terminations | — | 26/35 kV rated | |
| Joints | HV straight joints / branch joints | — | 26/35 kV rated | |
| Special tools | HV jointing kits, torque wrenches | — | Certified HV personnel only | |
| 09 · Packing | ||||
| Standard supply length | 500 m / drum | m | HV cable on steel drums | |
| Reel / packing type | Steel drum, sealed ends | — | Ends must be sealed | |
| Surface marking | YJV22, 3×150, 26/35kV, GB/T 12701, metre marks | — | Continuous printing | |
| Storage conditions | Dry, indoor, sealed ends | — | Protect from moisture | |
| 10 · Applications | ||||
| Typical use | HV power transmission, 35 kV grid, industrial primary substations, large plant feeders, urban ring main units | — | High-voltage power | |
| Max system voltage | 40.5 | kV (Um) | 26/35 kV rated | |
| Application level | High voltage | — | Transmission / primary distribution | |
Cable Test Parameters
| Test Parameters — YJV22-3×150 mm² (26/35 kV) | ||||
| No. | Test Item | Test Condition / Method | Requirement | Type |
| 1 | Conductor DC resistance | GB/T 3956, 20 °C | ≤ 0.124 Ω/km (Cu 150 mm²) | Routine |
| 2 | Power-frequency withstand | 63 kV AC, 5 min | No breakdown | Routine |
| 3 | Partial discharge test | 26 kV, 5 min | ≤ 10 pC | Routine |
| 4 | Insulation resistance | 5000 V DC | ≥ 2000 MΩ·km | Routine |
| 5 | Dielectric loss (tan δ) | 90 °C, U0 voltage | ≤ 0.0004 | Type |
| 6 | Impulse voltage test | 200 kV lightning impulse, 10 shots | No breakdown | Type |
| 7 | Bending test | 15× OD, 3 cycles | No damage | Type |
| 8 | Dimensional check | Micrometer / caliper | OD ≈ 78 mm, XLPE ≈ 8.8 mm | Routine |
| 9 | Heating cycle test | 90 °C ↔ ambient, 10 cycles | No damage | Type |
| 10 | Torsion / armor check | Visual + dimensional | Steel tape intact | Routine |
| 11 | Conductor continuity | Per GB/T 3956 | All 3 cores continuous | Routine |
| 12 | Sheath thickness | Micrometer | PVC ≥ 2.8 mm | Routine |
Cable Cross Section Structure
| YJV22-3×150 mm² (26/35 kV) — Cross-Section Construction Diagram (Schematic) | |||||
| HV power cable: Cu conductors → thick XLPE insulation → Cu tape screen → inner PVC → double steel tape armor (22) → outer PVC · 26/35 kV · 90 °C · finished Ø ≈ 78 mm | |||||
| No. | Layer | Material / Construction | Nominal Thickness (mm) | Diameter (mm) | Function / Remarks |
| 1 | Conductors (×3) | Compacted stranded copper, Class 2, 3 × 150 mm² | — | ≈ 14.5 | R ≤ 0.124 Ω/km |
| 2 | Insulation screen | Extruded semi-conducting + Cu tape | ≈ 0.12 (Cu tape) | — | Partial discharge control |
| 3 | XLPE insulation | Cross-linked polyethylene (thick) | ≈ 8.8 | ≈ 32 | 90 °C rated, 26/35 kV |
| 4 | Inner sheath (bedding) | PVC over cored assembly | ≈ 2.0 | ≈ 70 | Bed over cores |
| 5 | Steel tape armor (22) | Double galvanized steel tape | ≈ 2×0.5 | ≈ 74 | Mechanical / crush protection |
| 6 | Outer PVC sheath | PVC ST2, black, UV-resistant | ≈ 2.8 | ≈ 78 (finished) | Weather / UV protection |
| Key Dimensions & Properties (expanded) | |||||
| Finished cable diameter | ≈ 78 | mm | Overall | ||
| Approx. cable mass | ≈ 7200 | kg/km | Cu conductors + thick XLPE + armor + PVC | ||
| Nominal voltage rating | 26/35 | kV | High-voltage power | ||
| Max system voltage (Um) | 40.5 | kV | Temporary overvoltage | ||
| Max continuous conductor temp. | 90 | °C | XLPE rated | ||
| Short-circuit temp. | 250 | °C | Max 5 s | ||
| Min bending radius (fixed) | ≥ 15 × OD ≈ 1170 | mm | Armed HV cable | ||
| DC resistance @ 20 °C | ≤ 0.124 | Ω/km | Cu 150 mm² | ||
| Routine test voltage (AC) | 63 kV / 5 min | — | Power-frequency withstand | ||
| Partial discharge | ≤ 10 pC at 26 kV | — | HV requirement | ||
| Air ampacity @ 25 °C | ≈ 230 | A | 3 cores loaded (est.) | ||
| Buried ampacity | ≈ 215 | A | Direct burial | ||
| Impulse test voltage | 200 kV | — | Lightning impulse | ||
| Conductor material | Copper | — | High conductivity | ||
| Schematic — not to exact scale. Finished Ø ≈ 78 mm and weight ≈ 7200 kg/km from cross-referenced industry samples. YJV22-3×150 is a high-voltage (26/35 kV) XLPE-insulated, steel-tape-armored, copper-conductor power cable. Compared to YJLV22-3×400 (8.7/10 kV, aluminum conductor, 400 mm², Ø85 mm, 6200 kg/km, 410 A, 21 kV test), this cable operates at a much higher voltage (26/35 kV vs 8.7/10 kV), uses much thicker XLPE insulation (8.8 mm vs 5.5 mm), requires a higher routine test voltage (63 kV vs 21 kV), and is designed for 35 kV primary grid transmission rather than 10 kV distribution. Values marked (est.) require confirmation against the factory test certificate. | |||||
Construction Description
| Construction Description — YJV22-3×150 mm² (26/35 kV HV armored cable) | |||
| Layer-by-layer HV power cable: Cu conductors / thick XLPE insulation / Cu tape screen / inner PVC / double steel tape armor / outer PVC · 26/35 kV · 90 °C · finished Ø ≈ 78 mm | |||
| 1. Product Identity & Ratings | |||
| YJV22-3×150 is a high-voltage (26/35 kV) XLPE-insulated, steel-tape-armored, copper-conductor power cable built and tested per GB/T 12701 / IEC 60840. It has 3 copper conductors (150 mm² each, L1/L2/L3), thick XLPE insulation (8.8 mm) with copper tape screening, inner PVC bedding, double steel tape armor, and outer PVC sheath. Rated 90 °C continuous. Unlike YJLV22-3×400 (8.7/10 kV distribution, aluminum, 400 mm²), this is a 35 kV primary grid transmission cable. Finished Ø ≈ 78 mm, mass ≈ 7200 kg/km, steel drums. | |||
| 2. Copper Conductors (3×150) | |||
| The 3 conductors use 150 mm² compacted stranded copper (R ≤ 0.124 Ω/km). At 35 kV, the current is lower than at 10 kV for the same power, so 150 mm² Cu is sufficient for 35 kV primary distribution. Each conductor has an extruded semi-conducting screen to control electrical stress. | |||
| 3. Thick XLPE Insulation (8.8 mm) | |||
| XLPE insulation ≈ 8.8 mm thick — much thicker than the 8.7/10 kV version (5.5 mm). This is required to withstand the 26 kV phase-to-ground voltage. Over the insulation is a semi-conducting layer plus copper tape screen (≈ 0.12 mm). Routine test voltage is 63 kV / 5 min. Partial discharge ≤ 10 pC at 26 kV. | |||
| 4. Steel Tape Armor (22) | |||
| Double galvanized steel tape (≈ 2×0.5 mm) over inner PVC bedding provides crush protection for direct burial in 35 kV grid trenches. The armor does not carry current — it is purely mechanical protection. At 35 kV, cable fault energy is higher, so robust armor is essential. | |||
| 5. Site Handling & Operational Notes | |||
| • Bend radius 15×OD (≈ 1170 mm) fixed. • Use HV cold-shrink / heat-shrink terminations rated 26/35 kV. • 63 kV AC routine withstand test. • Partial discharge ≤ 10 pC at 26 kV. • Impulse test 200 kV. • At 7200 kg/km, heavy steel drums. • Store with ends sealed. • For 35 kV primary grid, industrial substations. |
8. Standards & Conformity. GB/T 12701 (HV plastic-insulated power cables up to 35 kV); IEC 60840 (XLPE HV cables); GB/T 3956 (conductors). Rated 26/35 kV (Um = 40.5 kV).
9. Packaging, Storage & Logistics. 500 m per steel drum with sealed ends. Continuous marking: YJV22, 3×150, 26/35 kV, GB/T 12701, metre marks. Store dry, indoor, ends sealed.
10. Procurement Specification. State "YJV22-3×150, 26/35 kV" + length. Order matching HV terminations/joints rated 26/35 kV. Confirm against factory test certificate (partial discharge + impulse test).
11. Cable Industry FAQ.
- Q1: What is the difference between 26/35 kV and 8.7/10 kV? 26/35 kV is high-voltage primary grid transmission (35 kV phase-to-phase), while 8.7/10 kV is medium-voltage distribution (10 kV phase-to-phase). The HV cable requires much thicker insulation (8.8 mm vs 5.5 mm), higher test voltage (63 kV vs 21 kV), and higher impulse rating (200 kV vs 75 kV).
- Q2: Why is the insulation so thick (8.8 mm)? At 26 kV phase-to-ground, the electrical stress on the insulation is much higher than at 8.7 kV. The thicker XLPE wall prevents dielectric breakdown and keeps partial discharge below 10 pC.
- Q3: What is the routine test voltage for 26/35 kV? 63 kV AC for 5 minutes — this is 2.4× the rated phase voltage (26 kV). This proves the thick XLPE has no manufacturing defects.
- Q4: What is the impulse voltage test? 200 kV lightning impulse — simulates switching surges and lightning strikes on the 35 kV grid. The cable must withstand 10 positive and 10 negative impulses without breakdown.
- Q5: Why use copper at 35 kV? At 35 kV, current is lower than at 10 kV for the same power, so a smaller conductor (150 mm² Cu) is sufficient. Copper also has better short-circuit withstand and lower connection resistance.
- Q6: What does "22" mean? 22 = inner PVC bedding + double steel tape armor + outer PVC sheath. Standard for buried HV cables where crush protection is needed.
- Q7: Can YJV22-35kV be used outdoors? Yes — the outer PVC sheath is UV-resistant. For direct burial, the steel tape armor provides crush protection.
- Q8: What bending radius is required? 15×OD ≈ 1170 mm for fixed installation. HV cables require larger bend radii because the thick XLPE insulation is rigid.
- Q9: What is partial discharge at 26 kV? Tiny electrical sparks inside the insulation at defects. HV cables must have ≤ 10 pC at rated voltage (26 kV) to ensure 30-year service life.
- Q10: Can YJV22 be used for fire pump circuits? No — YJV22 is not fire-resistant. Fire pump circuits must use mineral-insulated fire cables (BTTRZ/BTLY). YJV22 is for standard HV power transmission.
- Q11: How is the cable terminated? HV cold-shrink or heat-shrink terminations rated 26/35 kV. The termination must carefully strip the thick XLPE insulation, insulation screen, and conductor screen in the correct order. Only certified HV personnel should terminate 35 kV cables.
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