When it comes to high-voltage cables, we're primarily familiar with the wires on utility poles and the cables in underground pipe networks. High-voltage cables can be laid in various ways, including buried, piped, tunneled, or overhead. The selection of high-voltage cables for each installation method requires specific requirements. Because there are so many different types, choosing a high-voltage cable can be quite complex. Next, let's take a look at the functions of different high-voltage cable models.
What are the uses of different high-voltage cable models?
Model Name Application
Copper Core:
NA-YJV, NB-YJV, XLPE insulated, PVC sheathed, Class A(B) fire-resistant power cables can be installed indoors, in tunnels, and in ducts where fire resistance is required.
NA-YJV22, NB-YJV22, XLPE insulated, steel tape armored, PVC sheathed, Class A(B) fire-resistant power cables are suitable for underground installation where fire resistance is required, but are not suitable for installation in ducts.
NA-VV and NB-VV PVC insulated and sheathed Class A(B) fire-resistant power cables can be installed indoors, in tunnels, and in ducts where fire resistance is required.
NA-VV22 and NB-VV22 PVC insulated, steel-tape armored, and PVC-sheathed Class A(B) fire-resistant power cables are suitable for underground installation where fire resistance is required, but are not suitable for installation in ducts.
WDNA-YJY23 and WDNB-YJY23 XLPE insulated, steel-tape armored, and polyolefin-sheathed Class A(B) halogen-free, low-smoke fire-resistant power cables are suitable for underground installation where both halogen-free, low-smoke, and fire resistance are required, but are not suitable for installation in ducts.
Common Model Names and Applications
Copper Core and Aluminum Core:
ZA-YJV, ZA-YJLV, ZB-YJV, ZB-YJLV, ZC-YJV, ZC-YJLV, XLPE insulated, PVC sheathed, Class A (B, C) flame-retardant power cables can be installed indoors, in tunnels, and in ducts where flame retardancy is required.
ZA-YJV22, ZA-YJLV22, ZB-YJV22, ZB-YJLV22, ZC-YJV22, ZC-YJLV22, XLPE insulated, steel tape armored, PVC sheathed, Class A (B, C) flame-retardant power cables are suitable for underground installation where flame retardancy is required, but are not suitable for installation in ducts.
ZA-VV, ZA-VLV, ZB-VV, ZB-VLV, ZC-VV, ZC-VLV, and PVC insulated, PVC sheathed, Class A (B, C) flame-retardant power cables can be installed indoors, in tunnels, and in ducts where flame retardancy is required.
ZA-VV22, ZA-VLV22, ZB-VV22, ZB-VLV22, ZC-VV22, and ZC-VLV22, PVC insulated, steel-tape armored, and PVC sheathed, Class A (B, C) flame-retardant power cables are suitable for underground installation where flame retardancy is required, but are not suitable for installation in ducts.
WDZA-YJY, WDZA-YJLY, WDZB-YJY, WDZB-YJLY, WDZC-YJY, WDZC-YJLY, and Class A (B, C) flame-retardant power cables with cross-linked polyethylene insulation and polyolefin sheath can be installed indoors, in tunnels, and in ducts where flame retardancy, halogen-free, and low-smoke properties are required.
WDZA-YJY23, WDZA-YJLY23, WDZB-YJY23, WDZB-YJLY23, WDZC-YJY23, and WDZC-YJLY23
Cross-linked polyethylene insulated, steel-tape armored, and polyolefin sheathed Class A (B, C) flame-retardant power cables are suitable for underground installation where flame retardancy, halogen-free, and low-smoke properties are required. They are not suitable for installation in ducts.
VV and VLV are copper (aluminum) core PVC insulated and sheathed power cables, intended for installation indoors, in tunnels and ducts, or on outdoor racks. They are not subject to pressure or mechanical forces.
VY and VLY are copper (aluminum) core PVC insulated and polyethylene sheathed power cables.
VV22 and VLV22 are copper (aluminum) core PVC insulated, steel-tape armored, and polyethylene-sheathed power cables, intended for installation indoors, in tunnels, cable trenches, and direct burial in the soil. They are capable of withstanding pressure and other external forces. VV23 and VLV23 are copper (aluminum) core PVC insulated, steel-tape armored, and polyethylene-sheathed power cables.
What are the naming principles for high-voltage cables?
The complete nomenclature of wires and cables is often complex, so a simple name (usually a category name) combined with the model and specification is sometimes used instead. For example, "low-voltage cable" refers to all plastic-insulated power cables rated at 0.6/1 kV. The spectrum of wires and cables is relatively complete. It can be said that as long as the standard model specifications of wires and cables are written, the specific product can be clearly identified, but what is its complete naming?
The naming of wire and cable products has the following principles:
1. Content included in the product name
(1) Product application or size category name
(2) Product structure material or type;
(3) Important features or additional features of the product
Basically, the naming is carried out in the above order. Sometimes, in order to emphasize important or additional features, the features are written in the front or before the corresponding structural description.
2. Order of structural description
The product structure description is from the inside to the outside: conductor-->insulation-->inner sheath-->outer sheath-->armor type.
3. Simplification
Under the condition that it will not cause confusion, some structural descriptions are omitted or abbreviated. For example, aluminum conductors are not allowed in automotive wires and soft wires, so the conductor material is not described.
Rated Voltage 8.7/15kV Flame-Retardant Copper Core, XLPE Insulated, Steel Tape Armored, PVC Sheathed Power Cable
"Rated Voltage 8.7/15kV" – Application/Voltage Level,
"Flame Retardant" – Emphasized Feature,
"Copper Core" – Conductor Material,
"XLPE Insulation" – Insulation Material,
"Steel Tape Armor" – Armor Material and Type (Double Steel Tape Interstitial Wrap),
"PVC Sheath" – Inner and Outer Sheath Material (Inner and Outer Sheath Material are the same, omitting the inner sheath material),
"Power Cable" – Product Category.
The above explains high-voltage cables from two perspectives. You should now understand the different types of high-voltage cables, the different functions of different types, and the principles of high-voltage cable naming. High-voltage cables are a type of power cable used to transmit power between 1kV and 1000kV, primarily used for power transmission and distribution. High voltage electricity is very dangerous, so we remind everyone to pay attention to electrical safety!
