HTLS driver
The HTLS driver (High Temperature Low Sag Conductor) is a new generation aerial driver specially designed for electricity transport lines. It keeps a reduced arrow even in high temperature conditions, thus considerably improving the transport capacity and the stability of the electricity network. Compared to traditional drivers, The HTLS driver offers excellent performance in high temperatures resistance, increase in capacity and low online losses, which contributes to increasing the efficiency of energy transport and prolonging the lifespan of the lines.
ZMS, Electric cable supplier, offers a wide range of HTLS drivers, including ACSS types, ACSS/TW, G(Z)Proficiency, Invar driver, ACCR, ACCC/TW Conductors, etc. What's more, ZMS Cable offers a tailor -made cable service, guaranteeing quality and performance in accordance with international standards.

How are HTLS conductors classified ?
HTLS drivers (High Temperature Low Sag) are mainly distinguished by :
- Heart material : steel, Invar, composite core (carbon/fiberglass), or aluminum plated steel (AW).
- The conductive layer : aluminum or aluminum alloy, Round shape or trapezoidal thread (TW) To increase capacity.
- Structural design : with or without space (Gap type), Zn-Al coating (Z) or aluminum plated wire (AW).
The main abbreviations are : ACSS, ACCC, ACCR, Proficiency, AW, TW et G/Z, each combination that meets specific temperature needs, Reduced capacity and arrow.
Main types of HTL drivers manufactured by ZMS
ACSS ---- Aluminum driver with steel soul
- Recuity aluminum exterior torus (type 1350‑O) Surrounding a galvanized steel soul or aluminum -plated. Flexible aluminum carries the current, while the steel soul ensures mechanical resistance.
- Continues continuous up to 250 ° C without mechanical performance loss.
- Current transport capacity ~ 1.5 × that of an ACSR of the same section at 90 ° C.
- ALUMINUM REPUIT reduces losses (~ 2 %), lowering total losses of approximately 3% to constant power .
- Auto -amortant designer : limits aerodynamic vibrations without requiring antivibratory devices.
- The final arrow is not affected by the long -term flucoming aluminum thanks to the transfer of mechanical constraints to the steel soul .
- Modernization of existing lines without changing pylons, capacity increase on high voltage networks.
ACSS/TW — Aluminium Conductor Steel Supported / Trapezoidal Wire
- Same basis as ACSS - exterior aluminum tunes + Galvanized steel soul or AW - but aluminum is formed in trapezoidal son (TW) To reduce the empty space and increase the conductive section.
- Thanks to the trapezoidal thread, The driver's density increases without widening the outside diameter, which allows an even higher current transport capacity.
- Same advantages as standard ACSS : high service temperature (150–200°C), Reduced losses thanks to the RECIUT aluminum, Low arrow and excellent bending behavior.
- Good resistance to vibrations thanks to self-empowerment.
- Used for lines requiring maximum capacity in limited corridors, modernization of existing networks without modification of pylons, Where space gain is critical.
ACCC/TW ---- Aluminum driver with composite soul and trapezoid son
- Outdoor aluminum or special aluminum torus + Composite central soul (carbon and fiberglass) high module.
- Thanks to the composite nucleus, The thermal dilation coefficient is extremely low, which strongly limits the arrow even under high thermal load (Up to 180–200 ° C).
- The ACCC transports more current than an equivalent ACSR, with reduced losses.
- The composite soul is lighter than steel, which makes it possible to install longer bearings and to reduce the tension on the structures.
- Perfect for long litters, The flying lines of sensitive areas (rivers, valleys), or upgrades of saturated corridors where the low arrow is critical.
ACCR ---- Reinforced aluminum conductor with composite soul
- Outdoor aluminum aluminum torus + Central soul reinforced in composite (Typically aluminum alloy + High performance ceramic or composite fibers).
- The composite soul offers high mechanical resistance while having a low thermal dilation coefficient, which limits the arrow to high temperature (Up to 210–230 ° C).
- Allied aluminum retains excellent conductivity and supports high temperatures without significant loss of performance.
- Compared to an equivalent ACSR, an ACCR can double current capacity while reducing the total weight of the line, which decreases the load on existing pylons.
- Particularly suitable for congested corridors where the increase in capacity is necessary without modification of the structures, as well as sensitive environments requiring precise control of the arrow and reduced losses.
Proficiency ---- Reinforced aluminum conductor with heat resistant steel soul
- Exterior aluminum aluminum torus (type Al-Zr) + Galvanized steel soul or aluminum -plated steel.
- Thermoreist allied aluminum allows continuous exploitation at temperatures up to 150–210 ° C with stable mechanical resistance.
- Compared to classic ACSR, The tacsr offers a lower arrow at high temperature thanks to a better controlled dilation coefficient.
- It can be easily installed on existing structures to increase line capacity without strengthening pylons.
- Ideal for hot areas, long crossings or overloaded lines requiring an upgrade without heavy work.
TACSR / AW
- TACSR/AW — Thermal-resistant Aluminium Conductor Steel Reinforced / Aluminium Clad Steel Core
- Same base as the tacsr - external aluminum aluminum torus + Central Steel Soul AW (Aluminium Clad Steel) For better corrosion resistance.
- The AW soul combines the resistance of steel and the protection of plated aluminum, which extends the driver's life under severe climatic conditions (pollution, salty atmosphere).
- High service temperature (Up to 210 ° C), Good mechanical performance, arrow.
- Perfect for aerial lines by the sea or in a polluted industrial zone, or to replace standard ACSRs with a more sustainable and high capacity solution.
Invar driver (Mercy / Ztacır)
- TACIR — Thermal-resistant Aluminium Conductor Invar Reinforced
- ZTACIR — Zinc-coated Thermal-resistant Aluminium Conductor Invar Reinforced
- Aluminum-aluminum-zirconium exterior torons or aluminum alloy (thermorestelling) + Invar soul (Low dilation nickel alloy).
- The soul in invar offers an extremely low dilation coefficient, which allows the driver to keep a minimum arrow even at very high temperature (150–200°C).
- Aluminum thread can be ally and thermore -resistant to support the thermal load without loss of mechanical resistance.
- Invar is recognized for its dimensional stability and long lifespan.
- Used for long worn lines (rivers, valleys) or in areas where the low arrow is crucial and where the existing pylons cannot be modified.
GTACSR / GZTACSR
- GTACSR — Gap-type Thermal-resistant Aluminium Conductor Steel Reinforced
- GZTACSR — Gap-type Zinc-coated Thermal-resistant Aluminium Conductor Steel Reinforced
- Exterior aluminum aluminum torus + Central soul in galvanized steel (Proficiency) or galvanized steel covered Zn-al (ZTACSR) + internal space (Gap) allowing the nucleus to expand independently.
- The “GAP type” design allows high temperature operation (Up to 210 ° C) with less arrow, Because the nucleus can expand without transmitting the dilation to the conductive layer.
- The "Ztacsr" version adds additional protection against corrosion thanks to the zinc-aluminum coating of the soul.
- Ideal for lines exposed to humid or corrosive environments, or for the renovation of existing lines in tropical or coastal areas.
Technical information on the HTLS driver

Central driver | Minimum tensile resistance (MPa) | Elasticity module (GPa) | Minimal extension (%) | Linear dilation coefficient | Eligible service temperature (°C) | |
Continuous temperature (°C) | Short -term temperature (°C) | |||||
Galvanized steel | 1379~1448 | 206 | 3.0~4.0 | 11,5 | 180 | 200 |
Steel Zn-5al-MM (B802) | 1379~1448 | 206 | 3.0~4.0 | 11,5 | 250 | 350 |
High resistance galvanized steel (B606) | 1517~1620 | 206 | 3.0~3.5 | 11,5 | 180 | 200 |
Steel Zn-5al-MM (B803) | 1517~1620 | 206 | 3.0~3.5 | 11,5 | 250 | 350 |
Ultra-high resistance galvanized steel | 1827~1965 | 206 | 3.0~3.5 | 11,5 | 180 | 200 |
Steel Zn-5al-MM Ultra-high Resistance | 1827~1965 | 206 | 3.0~3.5 | 11,5 | 250 | 300 |
CTC ACCC/TW | 2137~2482 | 114 | 2 | 1,6 | 180 | 200 |
3M ACCR | 1379 | 220 | 0.64 | 6,0 | 250 | 300 |
Aluminum -plated steel (AW) 20,3% Iacs | 1034~1344 | 162 | 3 | 13,0 | 150 | 200 |
Aluminum Invar Steel 14% Iacs | 1207~1276 | 152 | 3 | 3,7 | 210 | 240 |
Why choose the HTLS drivers from ZMS Cable ?
- Higher eligible current : HTLS drivers made by ZMS Cable support service temperatures up to 200-250 ° C, Offering a current transport capacity 30 has 100 % greater than that of traditional drivers such as ACSR.
- Reduced arrow even at high temperature : Thanks to a low dilation coefficient (steel, Stainless steel or composite soul), The arrow remains minimal in high thermal load, ensuring the stability of the line.
- Less losses, no more return : The use of aluminum reception or aluminum combined reduces the electrical losses of 2 has 3 %, thus improving energy efficiency throughout the lifespan of the line.
- Profitable network upgrade : Ideal for increasing the capacity of existing lines without modifying or strengthening pylons, thus reducing costs and intervention time.
- Increased sustainability and reliability : These drivers offer excellent corrosion resistance, to flip and vibrations, guaranteeing a long service life and a reduced maintenance.
- Tailor -made cables : ZMS Cable offers personalized drivers according to your needs in materials and specifications. Our cables comply with international IEC standards, BS, and offer higher quality and performance.
Transport – ZMS CABLE
- The cables are packed on treated wooden towns or metal drums, With plastic film or BOPP for humidity protection.
- We offer maritime transport in 20ft or 40ft container, Depending on the control volume.
- Land transport is available for regional or local deliveries (Depending on the destinations).
- On demand, We also provide air transport for urgent orders.
- All necessary export documents are provided : commercial invoice, packing list, original certificate, documents douaniers, etc.
Conducteur HTLS Usine



ZMS CABLE est très expérimenté dans la fabrication et la fermeture de boîtiers pour les conducteurs HTLS, et nous avons des clients dans le monde entier. ZMS CABLE dispose d’une usine de câbles et d’un certificat de qualification précis et strict pour les produits de câbles.
Si vous ne savez pas comment choisir les produits de câble dont vous avez besoin ou si vous ne trouvez pas le type et la taille de câble dont vous avez besoin sur cette page, ne vous inquiétez pas. Contactez-nous et envoyez-nous vos exigences, et nous vous aiderons à choisir le bon câble. Vous pouvez nous fournir les informations suivantes : tension du câble, driver, matériau de l’isolation et de la gaine, type de blindage, type d’armure, etc. ou vous pouvez nous fournir l’environnement d’installation du câble, les exigences de l’application, etc. Nous vous servirons de tout cœur. Le fournisseur de câbles ZMS possède plusieurs certifications de qualité : ISO 9000, ISO 9001, ISO14000, ISO14001, ISO18000, CE, IEC, BS, NFC, ASTM, FROM, etc.