Sicame Group is one of the key players in the electrical equipment business worldwide. It has been able to adapt and develop to support the continuous evolution of electricity infrastructure in France and around the world, and become the largest independent entity in its sector.
A true player in the energy transition, it offers its customers new products and services to improve energy efficiency, deal with environmental risks and support the development of electric vehicle and solar power plant markets.
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Our fields of activity
Sicame Group is specialised in products and services related to transmission and distribution of electrical energy, renewables, electro-mobility, safety equipment and industrial applications.
With decades of history and recognized expertise, our Transmission division is specialized in designing, manufacturing and producing comprehensive ranges of transmission lines and systems connectors, damping systems, hardware and most advanced substation fitting solutions, adapted to the most technical configurations such as 8-bundle spacer dampers, UHV HVDC connectors and innovative high temperature conductor’s accessories.
HTLS
High temperature low sag cable line hardware
Since 2001, Dervaux has been working closely with the French electricity grid (RTE: Réseaux de Transport d’Electricité) and other major Utilities, to successfully qualify HTLS conductor sets and accessories.
Dervaux has confirmed for many years now, its strong technical capacity to design line hardware suitable to the HTLS conductors characteristics requirements:
● Maximum operating temperature (up to 250°C).
● Fully annealed aluminium for conductor strands.
● Gauges according to the required outputs.
We are qualified by most part of cable manufacturers either type of HTLS conductors, ACSS, Invar, Gap, carbon core and Metallic matrix type.
These specific conductor characteristics require the study and qualification of line hardware that result in safe, durable installations, whether new or existing lines.
This design results in good conductivity, good mechanical characteristics, and a low conductor sag.
HTLS Accessories
Our offering includes a complete range of suspension, anchoring and connection accessories for poles.
Dead-end
Dead-end infocore
Suspension clamps
Mid-span joint
Damping science mastering
Sicame Group has vast experience on many overhead HTLS lines which have successfully been protected from vibration. We gained this experience, through advanced research projects including various partnerships with universities, scientific expertise using state of the art vibration simulation, damping techniques and includingvarious elastomer materials.
Our expertise in R&D, design & test has and continues to assist engineers, consultants, and utilities globally, with new types of spacer dampers or vibration dampers for all types of conductor configurations.
Sicame Damping Systems Vibrations models induced by wind on single and bundle conductors which generate undesirable and dangerous phenomena on the OHTL:
● Aeolian vibration (Vortex Shedding)
● Wake induced oscillation (Sub-Span oscillation)
● Galloping
We developed the models which are linked to the tensile conductor loading and the particular evolution of self-damping linked to the use of the HTLS conductor.
Vibration level are controlled by Sicame using damping systems of spacer dampers and vibration dampers.
Spacer Dampers (SD)
The range of Sicame SD covers all possible applications:
● Voltage up to 1.200kV
● Bundle spacing up to 1.200mm
● Any conductor types
● Different clamping solutions
Vibration Dampers (VD)
In order to satisfy the demands of the market, our rangeof VD is very wide.It includes models with galvanized steel or zamaccoated masses and models with galvanized steel orstainless-steel messenger cable.
Specific information in terms of implementation or any question concerning the environment and conditions for using our solutions in your networks.
Analytical evaluation
Damping systems design
An optimum damping systems is designed to evaluate the two vibration phenomena (Aeolian vibration and Sub-Conductor oscillation) onthe OHTL, by means of a damping study, performed with validated software, issued by a collaboration with Politecnico di Milano.
Due to thousands of hours of tests, we have acquireda good understanding of the dedicated self-damping profile linked to HTLS conductor and their different types.
Damping systems validation
The validation of a damping system is carried out with measurements performed by Sicame equipment and personnel on the site ie (FIELD TEST). Such tests verify the real level of vibrations compared with evaluation at the design stage with the analytical method ie (DAMPING STUDY).
Our transmission laboratory is assisting both design activities and product verification. in the design stage it is supporting the technical department in its activity of research and development while in the product verification stage all quality control mechanical verifications and tests are carried out including batch acceptance tests.
We can perform also independent tests under accreditation or not for third party (cable manufacturers, utilities …). Test bench systems have flexibility to meet specific requirements.
Components mechanical tests:
Are performed at our laboratories worldwide that are fully equipped for all kind of destructive and non-destructive tests.
Full scale mechanical tests:
We are also capable to carry out full scale mechanical tests in independent and accredited laboratories so as to verify the real mechanical behavior of the full strings.
Electrical tests on complete strings:
RIV and Corona, Power Arc and Short Circuit are carried out in independent laboratories according to international standards and prescriptions of project technical specifications.
Manufacturing
Manufacturing activities are carried out in our factories directly or through our sub-suppliers and partners whithin Sicame Group.
● Manufacturing processes excellence centers.
● Interconnected supply chain among business unit net work.
● Complete manufacturing processes inside business unit.
Mechanical and electrical tests
Tensile tests
Slip tests
Creep test
800 kN tensile test bench. Length: 21m Program with stress and displacement instructions
800 kN tensile test bench. Length: 21m Program with stress and displacement instructions
Experimental span of 20m to 50m Ambient temperature regulation system: max0.2°C/hour Thermal sensor, laser displacement sensor, loadsensor
Current generator 50Hz; 6000A-40V; 21 thermal sensors
Vibratory tests
Self damping test
Damping effectiveness
Fatigue test
Span length: 51m. Force excitation with shakers. Regulated room temperature Minimum energy dissipation at ends
Span length: 51m. Force excitation with shakers. Regulated room temperature Strain and antinode measurement methods
Span length: 51m or 2 spans of 30m (crossing length). Force excitation with shakers. Can be performed with high temperature and tension
Shaker and 50 span
Dedicated test bench and Shaker
Environnemental test Shakers
Others tests
High temperature tensile test
IEC 61284
CTE on all conductors CIGRE TB426
Slip tests on all conductors IEC 61854
On conductor IEC 62567
On spacers / vibrtion dampers, jumpers, spiral. IEC 61897
Span fatigue, suspension clamp. IEC 62568
On vibration dampers,different methods : sweep, resonance R4 and 4 resonances
On spacers dampers, sub-spanoscillation, aeolian vibration, conical and horizontal fatigue
IEC 61897
IEC 61854
Sweep ageing IEC 60068
ISO 9227-2007 Category
Salt spray
Combo climatic chamber: T° range -60°C to +180°C Coupling with shaker Dry & wet heat
Full-Scale Mechanical Tests:
Corrosion test on every type of fittings
We are also capable of carrying out full-scale mechanical tests inindependent and accredited laboratories to verify the actual mechanical behaviour of the full strings.
Electrical tests on complete strings:
RIV and Corona, Power Arc and Short Circuit are conducted out inindependent and accredited laboratories according to International Standards and prescriptions of project technical specifications.
ACCC® Conductor benefits
Fastest and most cost-effective way to increase line capacity
Reconductoring reduces permitting challenges and the need to replace existing structures, which saves time and money. The ACCC® Conductor can carry twice the current capacity and reduces line loss by ~30% compared to conventional ACSR conductors. Reconductoring rapidly provides substantial power line capacity increase at the lowest cost.
Achieve sustainability and decarbonization goals
the ACCC® Conductor is the most energy efficient conductor on the market today. Its lighter weight composite core enables the use of nearly ~30% more aluminum. The added aluminum content reduces electrical resistance and line losses by ~30%. Reduced line loss reduces fuel consumption and associated emissions while freeing up generation capacity otherwise wasted. Use of ACCC® Conductor is helping reduce GHG emissions, globally, at an impressive rate.
Improve reliability & resilience
The ACCC® Conductor’s high-capacity, highstrength, low-sag, and resistance to corrosion and fatigue performance are proven to increase grid reliability and resilience. Reduced sag reduces the likelihood of sagtrip outages and wildfires. High capacity can allow grid operators to reroute power through ACCC® Conductors during emergency conditions, and the composite core is so strong, it has survived direct strikes from tornado debris and hurricane force winds.
Compression fitting for ACCC® Conductors
Sicame fittings have been specifically designed for CTC’s ACCC® Conductors. Each fitting is designed and manufactured in France. The raw material use guarantees the right transfer of the maximum rated current and the efficient dissipation of the increased heat allowed by the ACCC® conductor.
All Sicame compression fittings are designed for full tension use, performing a minimum of 95% of the UTS of the ACCC® Conductor. All family range dead ends can be supplied with eye bolt or tongue or clevis arrangement depending on
a 15 angle, which allows the terminal connector to be bolted on the straight or 30º position.
Sicame midspan joint is designed in accordance to standards: IEC 61284. Sicame HTLS knowledge and expertise have allowed to design a midspan joint shorter than the competition which will be faster to crimp on site.
EYEBOLT
OUTER TUBE
Eyebolt
Suspension clamp & vibration damper
Suspension clamp
The armor grip design gives soft retention of the conductor without an inflection point, to avoid vibration fatigue, and stress on carbon core. Armor rod sets reduce the local temperature of a conductor by decreasing the joule effect and increasing the thermal dissipation.
The lining of the suspension clamps have been specially designed and tested to guarantee the protection of the conductor in contact with the suspension clamp, by integrating the constraints of the external environment (UV, bad weather, etc.) associated with the high operating temperature requirements of the ACCC® cable.
Vibration damper
Installed on armor rods sets to protect the soft aluminum and reduce the local temperature of the conductor. 4 frequency response for larger damping spectrum. Dedicated clamp/attachment design to use on armor rod set. Space dampers can also be supplied in case of multiple bundles.
ACCC® Conductor accessories
Dervaux has also developed a full range of product for ULS & AZR conductors.
Services
Our experts will provide you with support all throughout your projects and with effective and secure use for our product ranges.
Advice and assistance
We have specialist teams available throughout the world in case you need technical assistance, whether you need advice on a product. Specific information in terms of implementation or any question concerning the environment and conditions for using our solutions in your networks.
Recommendations on the products for your installation projects
In each of our areas of activity our specialists can advise you on the technical solutions best suited to your technical requirements.
● Network configurations
● Standards for premises installations
● Climatic constraints
● Geographical constraints
Sicame’s training expertise at your service
Discover our expertise and our training programs at Sicame Academy for ever-increasing quality, reliability and sustainability of power networks throughout the world.
Sicame Group has created a network of training centers for its customers: Sicame academy, which offers in France and around the world, theoretical and practical training for acquiring the skills necessary for mastering the implementation of products as well as the safety procedures necessary for the work.
In France, the Group is affiliated as a training body (Affiliation no. for France: 74 19 00593 19) and certification body. All of the training modules can be carried out at our different premises or at your site. These modules can cover general knowledge, live-line work or dead-line work.
Advanced conductor accessories ACCC InfoCore system
The ACCC InfoCoreTM system was created by CTC Global to offer a novel way of verifying a successful installation by field crews.
● The ACCC InfoCoreTM system makes use of special fibres
● ACCC® Conductor to enable inspection in a quick and efficient manner.
● This system lowers the risk
● Aware that accidents can occur even with the best tools, equipment, and working conditions.
● The InfoCore system can verify the conductor’s integrity in just a few minutes
● Reliable data-capture and recording methodology.
● Utility companies and contractors can install equipment with more assurance
Advanced end fittings
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