YJV XLPE Insulated PVC Sheathed Power Cable
YJV-0.6-1kV
Copper conductor, XLPE insulation, PVC oversheath: the default 0.6/1 kV distribution build for indoor tray, conduit and duct routes.
XLPE Insulated Power Cable
Cross-linking converts polyethylene from a thermoplastic into a thermoset. Once the molecular chains are bonded into a three-dimensional network the insulation no longer softens an
Cross-linking converts polyethylene from a thermoplastic into a thermoset. Once the molecular chains are bonded into a three-dimensional network the insulation no longer softens and flows when the conductor is overloaded, and that single change lifts maximum continuous conductor temperature from 70 °C to 90 °C and short-circuit withstand from 160 °C to 250 °C for up to 5 s. In practical terms the same copper cross-section delivers 20-25 % more usable current than a PVC-insulated equivalent, which is why XLPE has displaced PVC across almost every new industrial distribution project where loads are expected to grow.
Voltcore produces the full 0.6/1 kV family to IEC 60502-1 and GB/T 12706.1 on equipment purchased for exactly this range: compacted Class 2 stranding, silane cross-linking towers with controlled humidity, and a triple-head line so screening can be added if an enquiry comes in for a higher voltage. Below you will find four builds: YJV with a PVC oversheath for ordinary tray and conduit work, YJY with a polyethylene oversheath for wet ducts and low-smoke areas, YJLV with aluminium conductors for long feeder runs where cost per amp matters more than bending radius, and N2XSY supplied to the German VDE letter code used in European and African tender documents.
4 constructions in XLPE Insulated Power Cable
YJY XLPE Insulated PE Sheathed Low Smoke Power Cable
YJY-0.6-1kV
A polyethylene oversheath instead of PVC: halogen-free, near-zero water transmission, and available as a tested LSZH construction.
YJLV Aluminium Conductor XLPE Power Cable
YJLV-0.6-1kV
All-aluminium conductor in the same XLPE build as YJV — around 55 % lighter per metre, for long runs where cost per amp decides.
N2XSY / N2XY IEC 60502-1 XLPE Power Cable
N2XSY-0.6-1kV
The VDE letter-code version of the same IEC 60502-1 build, quoted against European and African tender documents.
YJV or YJY: choosing the oversheath rather than the insulation
Both types use identical XLPE insulation and identical conductors, so all electrical ratings are shared. The difference sits in the outermost layer. A PVC oversheath (ST1/ST2 compound) is flexible, self-extinguishing and cheap; a polyethylene oversheath is stiffer, much less permeable to water vapour, and halogen-free because the polymer contains no chlorine.
Specify YJY where the route is permanently wet — flooded duct banks, river crossings inside conduit, untreated cable basements — or where a polyethylene oversheath is demanded by the utility. Specify YJV everywhere the cable is pulled around many bends or sits on a dry indoor tray, and note that PE sheaths have higher friction and can score more easily during pulling, so increase pulling-shoe radii accordingly.
- PVC sheath: flexible, flame-retardant, easier pull through tight routes
- PE sheath: lower water transmission, halogen-free, stiffer to handle
- Low smoke variant available as WDZ-YJY to IEC 61034 and IEC 60754
Reading an N2XSY designation letter by letter
European tenders rarely use GB codes, so a quotation request arriving as N2XSY deters suppliers who do not read the VDE letter sequence. In DIN VDE 0276-603 the initial N identifies a standard-conforming power cable, 2X is cross-linked polyethylene insulation, S is a metallic screen of copper wires with a counter-helix copper tape, and Y is a PVC outer sheath. The code therefore describes construction order: conductor, XLPE, screen, sheath.
The practical trap is that many buyers write N2XSY when they actually need unscreened 0.6/1 kV cable, which VDE writes as N2XY. Voltcore quotes both, flags the difference on our offer, and states the screened cross-section of copper wires in mm² so the earth-fault carrying capacity can be checked against the network's maximum fault level.
Why aluminium YJLV makes sense on long runs and not on short ones
On a 300 m feeder the conductor is typically half the cable cost, so switching to aluminium changes the tender materially. On a 30 m sub-board connection inside a factory the saving evaporates: the aluminium conductor needs the next size up, larger lugs and bimetallic terminations, and the installer spends more time per joint than the metal saved.
Set the crossover at roughly 80-120 m for low-voltage feeders, depending on local labour rates and whether the route is already excavated. Voltcore supplies the equivalence table with every aluminium quotation and pre-fits factory-crimped bimetallic lugs where the engineer asks for them, which removes the most common source of aluminium joint failures.
- Typical substitution: 50 mm² copper becomes 70 mm² aluminium
- Allow 1.5x the joint termination time compared with copper
- Ask for the resistance comparison in ohm/km before accepting the substitution
Request pricing across XLPE Insulated Power Cable
Include cross-section, core count, voltage grade, route length and installation method — those five determine price more than anything else on the page.
- Engineer-reviewed before pricing
- Reference drawings issued with the quotation
- Free sample up to free sample up to 5 m