Import 546kv Single Core Xlpe Insulation Power Cable — Buy in Bulk from Supplier in China

The 546kV Single Core XLPE Insulation Power Cable from Zhengzhou Zms Cable Co., Ltd. is engineered for ultra-high-voltage power transmission networks, with a rated voltage of 546kV that places it in the extrahigh-voltage (EHV) class. The cable employs cross-linked polyethylene (XLPE) insulation, a thermoset material that maintains dielectric stability up to 90°C continuous conductor temperature and 250°C short-circuit conditions. The single-core construction uses a stranded copper or aluminium conductor (specific alloy to be confirmed with the supplier), with semi-conductive layers applied over the conductor and under the insulation to control electric field distribution. The cable is designed for installation in tunnels, ducts, or direct-buried trenches where mechanical protection is provided separately.

XLPE insulation offers superior water-tree resistance compared to older PE or PVC formulations, with a typical dielectric constant of 2.3 and dissipation factor below 0.001 at power frequency. The 546kV rating requires precise insulation thickness, typically 27-32mm for this voltage class depending on conductor size and national standard applied. Metallic screening, usually copper wire braid or corrugated aluminium sheath, provides earth-fault current return path and radial water barrier. The outer sheath is commonly HDPE or LSZH compound for ultraviolet and chemical resistance. Lead alloy sheaths may be specified for highly corrosive environments, though this adds substantial weight and bending radius constraints.

Utility companies, national grid operators, and large industrial complexes with dedicated substations are the primary buyers of 546kV cable. Projects typically involve kilometres of cable with jointing stations at 500-800 metre intervals due to drum length limitations. Buyers should confirm with Zhengzhou Zms Cable Co., Ltd. the applicable design standard, IEC 62067 or GB/T 11017, and whether type tests including lightning impulse (LIWV 1550kV typical) and AC withstand (630kV/30min) have been completed. Delivery terms, drum lengths, and conductor cross-sectional area must be specified at enquiry stage, as these determine transport logistics and installation crew requirements.

Zhengzhou Zms Cable Co., Ltd. is located at Changzhuang Village, Fumin Road, Zhengzhou 450042, in Henan Province, China. The supplier holds an imported tier classification and a harbour trust tier on the platform. The response rate is recorded at 0.00% with zero average response hours, which indicates no response data is currently available. Buyers should note that direct communication channels may need to be established proactively rather than relying on platform messaging alone.

The listing presents itself as a manufacturer of high-voltage power cables, though no specific factory certifications, production capacity figures, or year of establishment are stated in the source material. No client references, export destinations, or annual revenue figures are provided. Buyers should request ISO 9001 and ISO 14001 certificates, factory inspection reports, and type test certificates for the 546kV class specifically, as these are standard requirements for EHV cable procurement and their absence in the listing does not preclude their existence.