HV-Underground Cable & Overhead Line

ZMS eletrical cable supplier believe that the voltage level of high-voltage cables is 35kv-220kv. Such as high voltage overhead power line and underground power cables. We provide high voltage cables including of British Standard, American Standard, European Standard and so on. Of course we can also customize high voltage cable types according to your needs. You can ask us about cable solutions and design and use around the specific requirements of your application and project. We are good at challenging cables of different numbers or lengths, or technically difficult structures.

Description of ZMS High Voltage Cable Products


ZMS electrical power company brand has been synonymous with the longest life in medium and high voltage cable systems. No matter in design or manufacturing, we can provide reliable performance and lower maintenance costs to ensure the stable operation of your current and future long-term power transmission projects.
They are suitable for installation outdoors, underground and in water. And then they are also suitable for installation in power stations, wind power stations, industrial, subsea power transmission, etc.

High Voltage---35KV-220KV Underground XLPE Insulated Power Cable

Like other power cables, high-voltage cables generally consist of one or three conductors, insulation materials, and a sheath structure. High-voltage cables and low-voltage cables differ in that they have an additional inner layer in the insulation jacket to control the electric field around the conductor. For circuits operating at relatively high voltages between conductors, a conductor shield can surround each insulated conductor. In this way, the electrical stress of the cable insulation can be balanced, and unnecessary losses of the cable can be reduced.

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IEC 60840, IEC 60287, IEC 62067, ICEA S-108-720 and AEIC CS9.
Voltage: 35kv-220kv
Conductor: Class 2 copper or aluminum conductor, compacted or segment strand Milliken to BS EN 60228 (previously BS 6360)
Conductor Screen: Extruded semi-conductive XLPE (Cross-Linked Polyethylene)
Cross-section: 150-800mm2
Insulation: XLPE(Cross-Linked Polyethylene)
Insulation Screen: Semi-conductive XLPE (Cross-Linked Polyethylene)
Separator: Water swellable semi-conductive tape
Screen: Copper wire screen, with a counter helix of copper tape
Separator: Water swellable tape
Sheath: HDPE (High Density Polyethylene)(To be specified at time of order. Other options available)
Maximum Conductor Temperature In Service: (Operating temperature-continuous operation) +90 °C
Short Circuit Temperature: +250 °C
Operating Temperature: -30 °C to 90 °C
Major technical parameters (220kv and below cable)
Partial Discharge Test: No detectable discharge exceeding the declared sensitivity (5 pC or better) at 1.5 U0.
Power Frequency Voltage Test: No breakdown of the insulation or flashover at 2.5U0 for 30 min.
Non-metal Sheath DC Voltage Test: No breakdown at DC voltage 25kV for 1 min.
DC Resistance Measurement of Copper Wire Screen at 20℃: The measured value shall comply with the specification of IEC 60228:2004.

High Voltage---35KV-220KV Bare Conductor Overhead Power Line-ACSR

ACSR is mainly used for high voltage or extra high voltage overhead power transmission. Because the main advantage of these conductors is their high tensile strength, they can be used for longer spans with less support, saving installation and maintenance costs. Because the diameter of ACSR conductors is relatively large, higher transmission and distribution power can be obtained, so it has great advantages in high-voltage and ultra-high-voltage overhead lines.

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Voltage: 35kv-220kv
Conductor: one or more layers of aluminum wire hard-drawn 1350-H16
On galvanized steel wire cores, the number of conductor cores can be single wire or stranded, depending on the size of the specific application requirements. ACSR can be designed by combining the quantity of aluminum and galvanized steel wire according to the electrical and mechanical strength requirements of transmission and distribution cables.
Conductor Parameters
ACSR conductors consist of a solid or stranded steel core surrounded by aluminum stranded wires. ACSR conductors can be made from a variety of steels with carbon content ranging from 0.5% to 0.85%. Higher-strength ACSR conductors are better for crossing rivers, overhead ground lines, or installations over very long spans. On galvanized steel wire cores, the number of cores can be single wire or stranded, depending on the size of the specific application requirements. ACSR can be designed by combining the quantity of aluminum and galvanized steel wire according to the electrical and mechanical strength requirements of transmission and distribution cables.


If you don’t know how to choose the products you need, or don’t find the cable type and size you need on this page, don’t worry. Contact us and send us your requirements, we can help you choose the right cable. You can provide us with the following information: cable voltage, conductor material, insulation and sheath material, shield type, armor type, etc. or you can provide us with cable installation environment, application requirements, etc. We will serve you wholeheartedly. ZMS Electrical Cable Supplier has a number of quality certification: ISO 9000, ISO 9001, ISO14000, ISO14001, ISO18000, CE, IEC, BS, NFC, ASTM, DIN, etc.

Service of ZMS Company

Over Productions Service

ZMS has a wide range of cable and conductor products for you to choose from. We will provide caring services and professional project solutions for everyone who needs them.

Quality Certification Services

ZMS cable products are manufactured according to GB, IEC, BS, NFC, ASTM, DIN and other international standards. Our technical team can customize cable products that meet your requirements according to your need.

Profession Customer Service

ZMS provide free professional consulting services to provide you with one-stop project solution services and rapid product delivery solutions.

Delivery And Shipping Services

While we ZMS provide high quality cables, we also provide good delivery solutions. While ensuring the safe delivery of products, we provide the best packaging and transportation solutions, greatly reducing customers’ transportation costs.

Packaging of ZMS

ZMS cables packaging are provided in the form of wooden reels, corrugated boxes and coils. The cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect the cable ends from moisture. We can print the required marks on the outside of the barrel with waterproof material according to customer requirements.

    We Provide High Quality Products and The Most Professional Cable Accessories Project Solutions.

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