HT Power Cable Buying Guide: Everything You Need to Know
High Tension (HT) power cable, also known as high-power cable, is manufactured to carry a high amount of electricity. With a large amount of voltage-carrying capacity, high insulation and robust design, these cables are deemed suitable for heavy machinery, factories, sub-stations, and large infrastructure projects.
Key Specifications at a Glance
In addition to high insulation, the conductors used come with high conductivity. The insulation material used ranges from Cross-linked Polyethylene (XLPE), Polyvinyl Chloride (PVC), and sometimes Ethylene Propylene Rubber (EPR), depending on the application. Let's have a look at the key specifications of HT power cables:
| Parameter | Options/Details |
| Voltage Range | 3.3 kV – 33 kV (up to 66 kV/132 kV available) |
| Conductors | Copper / Aluminium |
| Insulation | XLPE (preferable), PVC (sometimes), EPR (less common) |
| Sheath | PVC, FRLS, HR PVC, HDPE |
| Armor | Steel/Aluminium wire or tape, or unarmored |
| Temperature | XLPE: 90°C operation, 250°C short circuit |
PVC: 70°C/160°C | | Core Configs | Single, Three, Four-core | | Typical Ratings | 11 kV, 22 kV, 33 kV |
How to install HT power cables safely?
Depending on the application needs, there are two types of installation - underground installation and overhead installation. These types of installation cater to a diverse range of installation needs. For instance, for ease of installation, overhead installations are used, while for aesthetics and safety, overhead installations are in focus. Safety features of underground
HT Underground Installation – Step-by-Step
Before digging, check cable records for safe routing.
Dig to the required depth while following safe safety protocols
Lay out a smooth sand layer.
Lay down cables without tension or kinks.
Use Logs (bricks/slabs) and warning tape.
The process of backfilling involves refilling in layers while compacting each layer.
Conduct integrity tests post-installation.
Mark the cable route for future reference and safety.
Applications & Advantages
HT power cables are essential wires that find wide application in industrial zones, renewable energy setups, substations, etc.
These cables are stress resistant and provide high performance with high current carrying capacity without damage. Their speciality of carrying current efficiently, without power loss, makes them suitable for long-distance power transmission.
Supplier Checklist & Cost Insight
| Item | Details |
| Ask Suppliers | Test certificates, delivery timelines, and customisation options |
| Cost Trends 2025 | Prices are stable but volatile, influenced by metal costs and supply chain |
| Price/Meter | ₹300–₹700 (standard); up to ₹1,000+ for custom/high-spec cables; confirm with supplier for latest rates |
| Top Makers | Polycab, Havells, KEI, Finolex, RR Kabel, Universal |
Be it the underground installation of high-power tension cables or overhead high-tension cable installation, understanding of price, compliances, and alternatives is vital to project success from sourcing to installation. Be it HT cables or LT cables, Headsup B2B is your one-stop destination for all your cabling needs. We provide end-to-end fulfilment of these cables. Contact us today to know more.
