3M Aluminium Conductor Composite Reinforced (ACCR)
3M Aluminium Conductor Composite Reinforced (ACCR)
Authorised Dealer – Davis + Spence
Up to 2 times the Ampacity or more
Lower thermal expansion for less sag
Higher Strength-to-Weight Ratio
Operating temperatures up to 210℃ continuous and 240℃ emergency
Description
3M Aluminium Conductor Composite Reinforced (ACCR)
Authorised Dealer – Davis + Spence – Contact us Today
3M™ Aluminum Conductor Composite Reinforced (ACCR) is a proven, high temperature, low sag (HTLS) overhead transmission conductor.
This high-capacity transmission conductor has a high-strength, lightweight aluminium matrix core.
The outer, current-carrying strands are composed of a hardened aluminium-zirconium alloy.
3M ACCR’s core and outer wires are both helically stranded for greater strength and conductivity.
ACCR is similar in construction and dimensions to ACSR.
3M ACCR, however, has a higher strength-to-weight ratio and lower thermal expansion than
comparably sized steel core conductors – so it is lighter and sags less, even at higher operating temperatures.
This in turn allows higher ampacities at equivalent tensions and clearances.
3M ACCR retains its performance over decades of high temperature use and is stable in a wide range of environmental conditions.
Maximum ampacity with less sag.
Compared to the same diameter steel core conductor, 3M™ ACCR can offer:
Up to 2 times the ampacity or more
> Less thermal expansion, for less sag at high energy levels
> Higher strength-to-weight ratio
> Operating temperatures up to 210°C continuous and 240°C emergency*
3M Aluminium Conductor Composite Reinforced (ACCR)
Authorised Dealer – Davis + Spence – Contact us Today
Maximum ampacity with less sag
Large capacity increases at the same clearances, tensions and mechanical loads | Corrosion resistance without coatings or barriers around the core | Durability similar to ACSR, even when operated at high temperatures over long periods in extreme environments | Over a decade of successful, reliable operations
Fast and easy to use
3M ACCR was designed as a replacement for ACSR and ACSS to quickly and dramatically increase capacity on existing structures – while minimizing lengthy construction and permitting processes. Core stranding, hardware and construction procedures are similar to those for ACSR and are familiar to installers. And with shorter installation times, ACCR can help you get back to service more quickly
Lower total project cost
By eliminating the need for expensive new towers, land acquisitions and other factors, upgrading with 3M ACCR can offer substantial savings over ACSR and ACSS – even at a higher conductor cost-per-kilometer. For many thermal upgrades, ACCR can give you the high-performance, cost-effective solution you’ve been looking for.
Commitment to quality
3M ACCR and its accessories have been rigorously tested and verified to ASTM, IEEE and ANSI specifications, both in the laboratory and in the field. Test conditions included extreme temperatures, heavy icing, heavy loading and corrosive atmospheres. In all cases, 3M ACCR performed up to specifications and showed that the design coefficients accurately predict performance in the field.
Changing clearance requirements
NERC reliability standards and clearance requirements over highways, railroads or other shipping lanes may require upgrades. 3M ACCR can provide more capacity with no change in wire diameter or tower load, and often with reduced tension. Because 3M ACCR sags less, line clearances can be significantly improved while delivering the same or greater power, even at high temperatures.
Densely populated or underbuilt areas
In areas that are densely populated, upgrading with 3M™ ACCR can increase capacity by reusing existing structures with less disruption to the community, and without needing to site new structures. Transmission lines can also be upgraded without having to impact distribution lines underbuilt on the same structures, which means less expense and system disruption.
Environmentally sensitive areas
Transmission lines through environmentally sensitive areas require extensive and lengthy reviews and debate before approval. Upgrading with 3M ACCR allows existing structures to be used, avoiding or simplifying those reviews. The appearance of the line does not change.
Short timelines
3M ACCR can help you avoid construction projects, with their long lead times and permitting delays. Your project could be done faster, relieving constraints and getting the power flowing in record time.
Long spans/river crossings
Rivers and gorges are among the most difficult challenges, because it may not be possible to put a tower in the middle of the water or to change out existing towers for taller ones. The low sag, high strength and low weight of 3M ACCR can allow longer spans while giving you the capacity increase you need and maintaining or improving clearance and mechanical loads on the existing structures.
Heavy ice or wind loads
A high strength-to-weight ratio and modulus make 3M ACCR ideal for areas that experience high mechanical loads such as icing. In some cases, a smaller conductor can be used, reducing the conductor profile and mechanical loads during major wind and ice events. 3M ACCR can increase reliability during demanding loading conditions.
Corrosive environments
Because both the wire and the core are made from aluminium, 3M ACCR is resistant to corrosive environments such as high-pollution areas or the damp, salty air near seashores. Unlike steel- or carbon-polymer-core conductors, no special coating is required to avoid chemical interaction between the core and the conductor.
