From high voltage to individual connections, COTRAC designs, installs and maintains your electrical infrastructure to the highest standards of technical excellence and safety, in compliance with IEC standards and SENELEC specifications.
A complete range of interventions on electrical networks, from high voltage to photovoltaic installations and road signalling.
Studies, routing, pulling and connections of HV 22KV lines. Construction of overhead lines on reinforced concrete poles and metal pylons, underground lines in insulated HV cable, and overhead-underground lines combining both technologies according to terrain constraints. Every intervention is carried out by certified electricians in accordance with SENELEC specifications.
Installation and commissioning of transformer substations of all types: H61 type on pole or pylon, rural overhead type, urban ground-level type. Standard and motorised (remote-controlled) prefabricated HV cells, compact prefabricated substations for urban or industrial areas. Connections, testing and commissioning included.
LV support mounting (concrete poles, fittings), cable pulling, individual and collective installations and connections. Full electrification of industrial units, urban housing estates, agricultural farms and housing groups. Distribution panels, meters, residual-current devices and earthing.
Supply and installation of LED, HPS (high-pressure sodium), mercury vapour and metal halide luminaires. Single or double-arm lantern columns, galvanised steel masts from 4 to 12 metres. Cabling of controls, public lighting cabinet panels and timer or twilight remote control systems.
Sizing studies, supply and installation of off-grid or grid-connected photovoltaic systems. Residential kits, solar power plants for housing estates and agricultural solar pumping. Integration of storage batteries and high-performance inverters.
Installation of vertical road signs (warning, regulatory, information), road markings (solid/dashed lines, pedestrian crossings, direction arrows), road safety equipment (guardrails, delineators, markers). Works coordinated with road authorities.
Preventive and corrective maintenance contracts on existing HV/LV networks. Diagnostic of ageing networks, infrared thermography, insulation and earth resistance measurements. Full rehabilitation of degraded networks. Supply, installation and maintenance of generating sets up to 450 KVA for service continuity.
Design of single-line diagrams, HV/LV network dimensioning, voltage drop and short-circuit calculations. Preparation of technical dossiers for tenders (DAO/DCE), owner's project management assistance and compliance monitoring through to SENELEC acceptance.
Installation of earthing systems (foundation earth rods, stakes, meshes), soil resistivity measurements and equipotential verification. Installation of surge arresters, residual-current circuit breakers and overvoltage protection devices for industrial and commercial networks.
Pole erection, underground HV cabling, switching cabinets, transformer substations - discover our COTRAC teams at work on electrical sites across Senegal.
All our electrical works are carried out in compliance with international standards and national operator specifications.
International Electrotechnical Commission - global reference for electrical equipment, cables, HV switchgear and protection. All our supplies and installations comply with IEC series 60364, 60502 and 61936.
Institute of Electrical and Electronics Engineers - IEEE standards for distribution networks, transformers (IEEE C57), power system protection and photovoltaic systems (IEEE 1547).
Technical specifications and requirements of the Société Nationale d'Électricité du Sénégal - connection standards, network access conditions, company accreditation and works inspection by the national concessionaire.
Industrial companies, telecom operators, public institutions and agro-industrial firms - our partners attest to our reliability on electrical sites.
