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GB/T 12706.1-2020 · 0.6/1 (1.2) kV · YJV / YJLV / YJV22 / YJY / WDZ-YJY · Class 1 or 2 to GB/T 3956
YJLV/YJV 0.6/1kV XLPE Insulated Power Cable
Chinese-standard XLPE insulated power cable to GB/T 12706.1-2020 — YJV with a copper conductor and YJLV with an aluminium conductor, rated U0/U (Um) = 0.6/1 (1.2) kV, conductor temperature 90 °C continuous and 250 °C on short circuit.
0.6/1 kV
Rated voltage U₀/U (Um 1.2 kV)
1 – 5
Cores, plus 3+1 / 3+2 / 4+1
1.5 – 800 mm²
Cross-section range
+90 °C
Max. conductor temperature
↓ Download Datasheet (PDF)
Standard: GB/T 12706.1-2020
Conductors to GB/T 3956-2008
Copper YJV or aluminium YJLV
Steel-tape and wire armour options
GB/T 12706.1 · 0.6/1 kV XLPE POWER CABLE
GB/T 12706.1Modified from IEC 60502-1:2004 (MOD)
0.6/1 (1.2) kVRated voltage U₀/U (Um)
3.5 kV ACRoutine withstand test, 5 minutes
+90 / +250 °CContinuous / short circuit
20D / 15DBending radius, unarmoured 1-core / multi-core
Key Specifications
The essentials, at a glance
What a project engineer checks first on a GB/T 12706.1 power cable — the correct standard relationship, the conductor class, and the installation limits that actually decide the route.
0.6/1 kV
U₀/U, with Um = 1.2 kV
YJV / YJLV
Copper or aluminium conductor
1.5 – 800 mm²
Cross-section, by core count
3.5 kV AC
Routine withstand, 5 minutes
90 / 250 °C
Continuous / short circuit (5 s)
20D / 15D
Bending radius, 1-core / multi-core
Product Overview
The Chinese XLPE power cable standard, and the two things datasheets usually get wrong
This is a GB/T 12706.1 cable: an annealed copper or aluminium conductor, XLPE (cross-linked polyethylene) insulation and a PVC sheath, rated U0/U (Um) = 0.6/1 (1.2) kV for fixed installation in distribution networks and industrial plants. YJV carries the copper conductor and YJLV the aluminium one; the rest of the construction is the same. Conductors are to GB/T 3956-2008, which is identical to IEC 60228:2004 — Class 1 solid or Class 2 stranded as standard, with Class 5 flexible copper available on request.
The first thing datasheets get wrong is the standard relationship. GB/T 12706.1-2020 is modified from IEC 60502-1:2004 — the cover states MOD, not IDT — so writing the two numbers side by side as if they were the same document is wrong, and it matters when a specification asks you to declare which edition you are testing to. IEC 60502-1 is the international counterpart; GB/T 12706.1-2020 is what the cable is made and tested to, and it replaced the 2008 edition on 1 October 2020.
The second thing is the conductor temperature and bending radius. XLPE insulation is rated +90 °C continuous and +250 °C on short circuit for up to 5 seconds — both figures are from the standard itself. The minimum bending radius is where most datasheets quietly simplify: the standard gives four values, not two. For an unarmoured cable, a single-core construction needs 20 × D and a multi-core needs 15 × D; only the armoured versions drop to 15 D and 12 D. A datasheet that quotes 15 D and 12 D for a plain YJV is quoting the armoured figures, and a cable pulled round too tight a bend keeps the damage inside the sheath.
On the sheath: YJV and YJLV have a PVC sheath, which contains halogen. They are not low-smoke halogen-free products. That is a different family — WDZ-YJY for a halogen-free low-smoke sheath, or YJY / YJLY for a plain polyethylene sheath. If your specification calls for LSZH, say so at inquiry stage and we quote the right model rather than relabelling this one.
The letter code is worth reading once. YJ is the cross-linked polyethylene insulation, V is the PVC sheath and Y is a polyethylene sheath; L marks an aluminium conductor, and a bare T for copper is normally omitted. The two digits give the armour: 22 is double steel tape, 32 is fine round steel wire and 42 is coarse round steel wire. So YJV22 is the steel-tape armoured version for direct burial and YJV32 / YJV42 are the wire armoured versions for shafts and for routes where the cable has to carry its own weight. For the European equivalent in a halogen-free construction, see our CU/XLPE/LSZH/SWA/LSZH Armoured Power Cable.
More about the manufacturer: About SORIVO →
Key Features
Eight things that decide the specification
GB/T 12706.1-2020
Power cables with extruded insulation for rated voltages from 1 kV up to 35 kV, Part 1 — the standard this cable is made and tested to. It replaced the 2008 edition on 1 October 2020.
Modified from IEC 60502-1
The standard is modified from (MOD) IEC 60502-1:2004, not identical to it. We state which one the cable answers to rather than quoting both as one.
0.6/1 (1.2) kV
The rated voltage in the standard's own notation: U0/U (Um) = 0.6/1 (1.2) kV, taken from clause 4.1 of GB/T 12706.1-2020.
+90 °C / +250 °C
XLPE insulation rated +90 °C continuous conductor temperature and +250 °C on short circuit for up to 5 seconds, straight from the standard's conductor temperature table.
3.5 kV AC Withstand
Every production length gets a 3.5 kV AC routine withstand test for 5 minutes, the value the standard sets for a 0.6 kV cable, with the result recorded against the drum.
Class 1 or Class 2 Conductor
Annealed copper or aluminium to GB/T 3956-2008 (identical to IEC 60228:2004) — solid or stranded as standard, Class 5 flexible copper on request.
Four Bending Radius Values
20 D single-core unarmoured, 15 D multi-core unarmoured, 15 D single-core armoured and 12 D multi-core armoured — the full set, not the two armoured figures on their own.
Armour and Sheath Options
Steel-tape armour (22) for direct burial, fine or coarse round steel wire (32 / 42) for shafts and tensile routes, a PE sheath (YJY / YJLY) or a halogen-free low-smoke version (WDZ-YJY).
Applications
Where GB/T 12706.1 power cable is installed
Distribution boards, plant feeders and building services on projects specified to Chinese standards.
01
Low-Voltage Distribution and Sub-Mains
Transformer-to-board and board-to-board feeders in commercial and industrial installations, in copper YJV or aluminium YJLV depending on the load and the budget.
02
Industrial Plant Power Distribution
Motor feeders and distribution circuits in factories, where the cable runs on tray and ladder and has to hold its rating in a hot plant room.
03
Switchgear and MCC Connections
Panel-to-panel and panel-to-load connections inside substations, with the bending radius set by the switchgear cubicle rather than the route.
04
Buried Distribution (Armoured)
Directly buried and ducted feeders using YJV22 steel-tape armour, where the armour takes the mechanical load the ground imposes.
05
Shafts and Vertical Risers (Wire Armour)
YJV32 and YJV42 use round steel wire armour and are chosen where the cable has to support its own weight in a riser or a wet shaft.
06
Pumping Stations and Water Treatment
Buried and ducted power feeders to pumps and process equipment, usually in the armoured construction.
07
Building Services Risers and Plant Rooms
Chillers, air handling units and lift supplies, in tray or conduit, where the fire performance requirement is set by the local code.
08
OEM Equipment and Export Projects
Machines and skids built to Chinese standards for domestic or export markets, where the cable schedule names YJV or YJLV directly.
Technical Specifications
Full specification sheet
The complete parameter set — the same data our engineers quote from.
Table 1 Model designation — what each type is for
| Model | Conductor | Insulation | Sheath | Armour | Where it is used |
|---|---|---|---|---|---|
| YJV | Copper (T omitted) | XLPE | PVC | None | The default copper type for fixed installation indoors, in trays, ducts and conduits |
| YJLV | Aluminium (L) | XLPE | PVC | None | The same construction with an aluminium conductor — lighter and lower cost on long, lightly loaded runs |
| YJV22 / YJLV22 | Copper / aluminium | XLPE | PVC | Double steel tape (22) | Direct burial and ducted routes where mechanical protection is needed |
| YJV32 / YJLV32 | Copper / aluminium | XLPE | PVC | Fine round steel wire (32) | Shafts, risers and routes with a tensile load |
| YJV42 / YJLV42 | Copper / aluminium | XLPE | PVC | Coarse round steel wire (42) | The same duty as 32 with a heavier armour where the pull or the ground load is greater |
| YJY / YJLY | Copper / aluminium | XLPE | PE (Y) | None | Where the specification asks for a polyethylene sheath instead of PVC |
| WDZ-YJY / WDZ-YJLY | Copper / aluminium | XLPE | Halogen-free low-smoke | None | Where low smoke and zero halogen are specified — this, not YJV, is the LSZH product of the family |
The two digits of the armour code read as one figure: 22 is double steel tape, 32 is fine round steel wire and 42 is coarse round steel wire. YJV and YJLV have a PVC sheath, which contains halogen — they are not low-smoke halogen-free cables, and a specification that asks for LSZH has to be quoted as WDZ-YJY or YJY, not as YJV. The YJV22 and YJV32 drawings add an inner sheath under the armour, so the outer diameter and the bending radius differ from the unarmoured version of the same conductor size.
Table 2 Construction and performance parameters
| General Information | |
| Product Name | YJLV/YJV 0.6/1kV XLPE Insulated Power Cable |
| Model Designation | YJV / YJLV / YJV22 / YJLV22 / YJV32 / YJV42 / YJY / YJLY / WDZ-YJY — see Table 1 |
| Standard | GB/T 12706.1-2020, Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV) — Part 1: cables for rated voltage of 1 kV (Um=1.2 kV) and 3 kV (Um=3.6 kV). Published 2020-03-31, effective 2020-10-01, superseding GB/T 12706.1-2008 |
| Relationship to IEC | GB/T 12706.1-2020 is modified from IEC 60502-1:2004 (MOD) — it is not identical to it. IEC 60502-1 is the international counterpart of this standard, not a second standard this cable is separately tested to |
| Conductor Standard | GB/T 3956-2008, Conductors of insulated cables — identical to IEC 60228:2004 (IDT) |
| Scope of the Standard | Fixed installation in distribution networks and industrial installations. The standard does not cover cables for overhead lines, mining, nuclear plant containment or submarine and shipboard use |
| Electrical Ratings | |
| Rated Voltage U0/U (Um) | 0.6/1 (1.2) kV — the notation used in clause 4.1 of GB/T 12706.1-2020 |
| Conductor Material | Annealed copper (YJV) or aluminium / aluminium alloy (YJLV). GB/T 3956 specifies the conductor resistance and construction — it does not set a purity figure, so no purity percentage is claimed here |
| Conductor Class | Class 1 solid or Class 2 stranded as standard; Class 5 flexible copper available on request. The standard permits the 1st, 2nd and 5th conductor classes in copper and the 1st and 2nd in aluminium |
| Routine Withstand Test (finished cable) | 3.5 kV AC, 50 Hz, 5 minutes — the value the standard sets for a 0.6 kV cable in its routine test voltage table, applied to every production length |
| Insulation Resistance / Volume Resistivity | XLPE ≥ 1 × 10¹² Ω·cm at the maximum conductor temperature, per the electrical type test table of GB/T 12706.1-2020 |
| Max. Conductor Temperature | +90 °C continuous |
| Short-Circuit Temperature | +250 °C for a duration not exceeding 5 seconds |
| Screen (optional) | Copper tape or copper wire screen on request for the screened constructions |
| Construction | |
| Insulation | XLPE (cross-linked polyethylene) compound |
| Sheath | PVC compound, black as standard, for YJV / YJLV and their armoured versions; polyethylene for YJY / YJLY; halogen-free low-smoke for WDZ-YJY |
| Armour | None for YJV / YJLV; double steel tape for 22; fine round steel wire for 32; coarse round steel wire for 42 |
| Core Identification | Colour-coded cores for small core counts; numbered cores for larger counts, with a green/yellow protective conductor where the schedule requires one, to the identification requirements cited by the standard |
| Outer Diameter | Depends on core count, cross-section and armour; stated on the construction drawing |
| Standard Lengths | 100 m / 500 m / 1000 m per drum or coil; cut lengths on request |
| Installation | |
| Bending Radius, Installation — 1 core, unarmoured | 20 × D |
| Bending Radius, Installation — 1 core, armoured | 15 × D |
| Bending Radius, Installation — multi-core, unarmoured | 15 × D |
| Bending Radius, Installation — multi-core, armoured | 12 × D |
| Bending Radius, at Joints and Terminations | 15 D / 12 D / 12 D / 10 D for the same four cases — a tighter limit applies close to a joint box or a termination |
| Direct Burial | Not recommended for the unarmoured YJV / YJLV. Use the steel-tape armoured YJV22 / YJLV22 for direct burial |
| Current Rating | Depends on the installation method, the ambient temperature and the number of circuits in the group. We issue the rating for the actual route with the quotation rather than a single number |
| Configuration & Logistics | |
| Cross-Sections | 1.5 / 2.5 / 4 / 6 / 10 / 16 / 25 / 35 / 50 / 70 / 95 / 120 / 150 / 185 / 240 / 300 / 400 / 500 / 630 / 800 mm² depending on core count and conductor material — see Table 3 |
| Core Configurations | 1, 2, 3, 4 or 5 cores, plus 3+1, 3+2 and 4+1 arrangements |
| Customization | Conductor material, core count, cross-section, sheath compound, armour type, sheath colour, cut length and customer marking |
| Packaging | Wooden drum, steel-wood drum or coil per order |
| MOQ | 500 m — sample orders negotiable |
| Lead Time | 7–20 working days; stocked configurations 3–5 days |
Table 3 Typical core count and cross-section matrix
| Cores | Copper YJV / armoured (mm²) | Aluminium YJLV / armoured (mm²) | Typical use |
|---|---|---|---|
| 1 | 1.5 – 800 | 2.5 – 800 | Single-phase feeders, and the individual phases of a parallel run |
| 2 | 1.5 – 185 | 2.5 – 185 | Single-phase sub-mains and DC links |
| 3 | 1.5 – 300 | 2.5 – 300 | Three-phase feeders without a neutral |
| 4 | 2.5 – 300 | 2.5 – 300 | Three-phase with a protective conductor |
| 5 | 2.5 – 300 | 2.5 – 300 | Three-phase with neutral and protective conductor |
| 3+1 / 3+2 / 4+1 | 2.5 – 300 (main cores) | 2.5 – 300 (main cores) | Reduced neutral or protective conductor, sized to the standard's recommended neutral and protective conductor cross-sections |
The ranges above are the typical production range for this family, not a table copied from the standard: the achievable upper limit depends on the conductor stranding equipment and on the sheath thickness calculated from the standard's assumed-dimensions method. A construction drawing stating core count, cross-section, conductor class, armour and outer diameter is issued for approval before the first production run, and final selection is confirmed against the selected construction. Where a project specifies a cross-section above these ranges, ask and we will confirm against the drawing.
Values marked as coming from the standard are taken from GB/T 12706.1-2020: the rated voltage from clause 4.1, the +90 °C and +250 °C conductor temperatures from the conductor temperature table, the 3.5 kV / 5 minute routine test from the routine test voltage table, the 1 × 10¹² Ω·cm volume resistivity from the electrical type test table, and the four bending radius figures from the minimum bending radius table for installation. The 3.5 kV withstand test is the finished-cable routine test applied to every production length; it is not a statement of the dielectric strength of the XLPE compound, which is a material property and is not quoted as a product parameter. Conductor resistance values are the Class 2 maxima to GB/T 3956-2008 (IEC 60228:2004). No CCC, CE or other certification claim is made on this page — certification and its scope are confirmed against the certificate for the selected construction, and the documents are issued with the quotation.
Certificates & Standards
Verify before you buy — we make it easy
GB/T 12706.1-2020
The standard this cable is made and tested to, stated with its correct relationship to IEC 60502-1:2004 — modified from (MOD), not identical. We name the edition and the effective date rather than quoting two standard numbers side by side.
Request standard reference →GB/T 3956-2008 conductor and routine test
Class 1 solid or Class 2 stranded annealed copper or aluminium to GB/T 3956-2008, identical to IEC 60228:2004. Conductor resistance, insulation resistance and the 3.5 kV AC withstand test are measured on every production length and recorded against the drum.
Request test records →Certification — no claim without the certificate
Certification scope depends on the exact construction, conductor material and cross-section, so we confirm it against the certificate for the cable actually ordered instead of printing a blanket claim. Third-party inspection, RoHS documentation and the construction drawing are available on request.
Request documentation →
Transparency note: certification status and exact scope should always be confirmed against the certificate for the selected product configuration. We provide the certificate and test reports with every quotation — no blank promises.
Quality & Factory
Every length tested before the drum is released
Power cable is bought by the drum and installed by the kilometre, so the release checks are recorded per production length rather than per batch.
- 1Incoming material control — conductor, XLPE compound, the aluminium or copper tape where a screened construction is ordered, and the PVC or PE sheath compound are checked against specification before extrusion starts.
- 2In-line process monitoring — conductor diameter, insulation thickness, core lay length and sheath thickness are tracked during production, and the insulation is spark-tested inline.
- 3Electrical routine tests — conductor resistance, insulation resistance and the 3.5 kV AC withstand test are measured on every production length and recorded against the drum.
- 4Finished-cable inspection — outer diameter, core identification, sheath surface and the printed marking are checked against the approved construction drawing before the drum is released.
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countries served
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industrial & panel projects
100%
routine test before shipment
How to Order
From inquiry to loaded carton in 5 steps
Send Inquiry
Tell us the model designation (YJV or YJLV and any armour code), the core count and cross-section, the conductor material and the quantity.
Confirm Configuration
We confirm the construction, conductor class, armour, sheath compound and cross-section against the drawing, and send the quotation within one working day.
Sample Evaluation
Sample for qualification — stocked configurations within a few working days.
Bulk Production
7–20 working days; stocked configurations within 3–5 days.
Delivery & Support
Drum packing, shipping documents and cut lengths on request, with the construction drawing issued for approval before the first production run.
FAQ
Questions buyers ask before ordering
GB/T 12706.1-2020 — Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV, Part 1. It was published on 31 March 2020, took effect on 1 October 2020 and supersedes GB/T 12706.1-2008. It is modified from IEC 60502-1:2004 (MOD), which is the international counterpart of this standard — the two are not the same document, so a datasheet that lists them as interchangeable is describing the relationship incorrectly.
YJV is XLPE insulated with a PVC sheath. YJY is the same XLPE insulation with a polyethylene (PE) sheath, which is chosen where the specification wants a sheath without the PVC compound. VV is the older family with PVC insulation and a PVC sheath, rated at +70 °C instead of +90 °C. The insulation is the real difference: XLPE carries 90 °C continuously and 250 °C on short circuit for up to 5 seconds, which is what lets an XLPE cable carry more current than a PVC cable of the same cross-section.
Aluminium is the economic choice when the run is long and the load is moderate — the conductor is lighter, so the drum and the support structure cost less, and the material cost is lower. Copper is the usual choice for short, heavily loaded runs, for tight routes and where the terminations are already sized for copper. Two practical points: aluminium needs a larger cross-section than copper for the same current, and it needs the correct bimetallic or aluminium terminations. Tell us the route length and the load and we will quote both.
Not as the plain unarmoured YJV or YJLV. Those types are for trays, ducts, conduits and cable trenches. For direct burial you want the steel-tape armoured YJV22 / YJLV22, which adds mechanical protection against ground movement and stones; for routes where the cable also carries a tensile load, such as a shaft, use the round steel wire armoured YJV32 or YJV42. Say at inquiry stage that the route is buried and we quote the armoured construction with the correct drawing.
No. YJV and YJLV have a PVC sheath, which contains halogen. The halogen-free low-smoke version of this family is WDZ-YJY (or WDZ-YJLY for the aluminium conductor), and YJY / YJLY gives a plain polyethylene sheath. If the specification requires low smoke, zero halogen — or a CPR Euroclass — the model designation has to change, and we will quote the right one rather than describing this cable as something it is not.
The standard gives four values, and they apply to installation: 20 × D for a single-core unarmoured cable, 15 × D for multi-core unarmoured, 15 × D for single-core armoured and 12 × D for multi-core armoured, where D is the overall diameter. Closer to a joint box or a termination the permitted radius is tighter — 15 D, 12 D, 12 D and 10 D in the same order. Most datasheets quote only the two armoured figures, which understates the radius a plain YJV needs; a bend made too tight leaves damage that is invisible from outside the sheath.
We do not print a blanket certification claim on this page. Certification scope depends on the exact construction, conductor material and cross-section, so it is confirmed against the certificate for the cable actually ordered and the documents are issued with the quotation. Where the project requires a declaration of conformity or third-party inspection, tell us at inquiry stage and we will confirm what applies to your configuration before you order.
MOQ 500 m, with sample orders negotiable. Lead time is 7–20 working days, and stocked configurations ship within 3–5 days. Standard delivery is 100 m, 500 m or 1000 m per wooden or steel-wood drum, or in coils, with cut lengths to order. A construction drawing stating core count, cross-section, conductor class, armour and outer diameter is issued for approval before the first production run, and conductor resistance, insulation resistance and the 3.5 kV withstand result are recorded per production length.
Need GB/T 12706.1 power cable for a project?
Tell us the model, core count, cross-section and conductor material — we reply within one working day.
Get a Free Quote
Send your power cable requirement
The more detail you give, the faster and more accurate our quotation. Our engineers reply within one working day.
- Model designation: YJV or YJLV, plus the armour code if the route needs one (22, 32, 42)
- Core count and cross-section, or the cable schedule reference
- Conductor material — copper or aluminium — and whether Class 1, 2 or 5 is specified
- Whether direct burial, duct, tray or a riser is the installation method
- Length per drum or cut lengths, and the quantity for the first order
- Whether a construction drawing has to be approved before production
Inquiry received
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