The YJV22 is a heavy-duty underground power cable rated up to 1,000V, built with high-purity copper conductors, heat-resistant XLPE insulation, double steel tape armor, and a durable PVC outer sheath.

Technical Specifications

Item	Specification
Rated Voltage	0.6/1kV
Conductor	Copper (Class 1 Solid / Class 2 Stranded)
Temperature Rating	90°C continuous, 250°C (5 s) short circuit
Installation Temperature	≥0°C
Minimum Bending Radius	15 × Overall Cable Diameter
Installation Method	Direct burial, cable trench, duct, cable tray
Standards	IEC 60228, IEC 60502, GB/T 12706 (China), BS 5467 (UK)

Cable Construction

Layer	Material	Function
Conductor	Copper	Power transmission
Insulation	XLPE	Electrical insulation & heat resistance
Filling	PP Rope	Maintains cable shape
Armour	Double Steel Tape	Mechanical protection
Outer Sheath	PVC	Moisture & corrosion protection

Industrial Applications

Substation Grid Feeders: Primary connections between distribution transformers and switchgear units in medium and low voltage networks.

Underground Service Entries: Direct-buried main power lines engineered to withstand soil pressure in commercial complexes, data centers, and hospitals.

Solar & Wind Farms: Underground AC collection cables linking central inverters to step-up transformer stations.

Transport Infrastructure: Power routing along concrete cable trenches, ladder racks, and conduits in tunnels and railways.

Available Sizes & Custom Manufacturing

Single-Core (1x), 2-Core, 3-Core, 4-Core, 5-Core, and neutral-balance options (3+1 / 4+1 / 3+2).
Standard cross-sectional areas from 1.5 mm² up to 630 mm² conforming to IEC 60228 Class 2 specifications.
Optional WDZ-YJY23 low-smoke, zero-halogen materials per IEC 60754 and IEC 61034 standards.
Precision cut-to-length steel/wooden drums with international standard phase color-coding.

Testing & Quality Control

100% In-Line Spark Testing: Continuous high-voltage testing on insulated cores before cabling to guarantee insulation integrity.

Conductor Resistance Checks: Micro-ohm testing on raw copper batches to confirm IEC 60228 conductivity compliance.

Factory Acceptance Testing (FAT): High-voltage withstand (AC 3.5kV/5min) and insulation resistance testing performed on finished drums.

Traceability & Inspection: Shipments include Mill Test Certificates (MTC EN 10204 3.1) and support third-party inspections (SGS, BV, TÜV).

Commercial Terms

Heavy-Duty Packaging: Export-grade reinforced wooden or steel drums sealed with heat-shrinkable end caps.

MOQ: Flexible MOQ starting at 500 meters per specification or 5 metric tons total weight.

Production Lead Time: Standard orders ready for port dispatch within 15 to 20 calendar days.

Incoterms: FOB (Shanghai/Ningbo), CIF, CFR, and DDP project site delivery.

Payment Terms: Wire Transfer (T/T), Irrevocable L/C at sight, and milestone payments for qualified EPC contractors.

Factory Compliance

Manufacturing Experience: Established cable manufacturer (est. 2005) backed by 800+ technical and operations personnel.

Production Scale: 150-acre manufacturing base equipped with continuous vulcanization lines for power cables.

Certified Management: Fully audited and certified under ISO 9001 (Quality), ISO 14001 (Environment), and ISO 45001 (Safety).

FAQ

Q: Is a cold-flex version available for winter installations?

A: A cold-flexible PVC compound rated for installation down to -15°C is available as a custom option for winter construction schedules in colder climates.

Q: What is the recommended service life under underground installation?

A: When installed according to IEC recommendations and operated within the rated voltage and temperature limits, YJV22 cables are designed to provide a service life of more than 30 years with routine system maintenance.

Q: How does the milestone payment option work for qualified EPC contractors on large substation projects?

A: Milestone payments are typically structured as 20% deposit, 40% upon FAT completion, and 40% against B/L for confirmed EPC contracts above 10,000 meters.

Q: What happens if a drum fails the AC 3.5kV withstand test after arrival at the destination port?

A: Buyers must submit a claim with test evidence within 15 days of port arrival, after which a credit note or free replacement is issued within 10 business days upon verification.

Q: What is the current-carrying capacity of the largest 630mm² cable size at standard direct-burial conditions?

A: At 630mm² in direct burial at standard soil thermal resistivity (1.0 K·m/W) and 25°C ground temperature, current-carrying capacity is approximately 780-820A per IEC 60502-2 reference tables.

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