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Welcome to SEMAP

Your effective partner in your projects

Electrical engineering Company, SEMAP ensures the study, supervision, mounting, maintenance, testing of electrical network protection and commissioning of industrial installations.
SEMAP is comprised of experts specialized in High Voltage.
Our responsiveness ensures our customers an optimal use of their electrical installations and supports its customers in the realization and operating of solutions tailored to their needs.
The existing synergy of SEMAP allows to cover the set of works to achieve projects "turnkey" particularly interests our customers eager to reduce interfaces.
SEMAP places the safety of the staff and the quality of its services in the center of its concerns and provides the ways of control to achieve them.
Our activity will ensure to our customers an optimal use of their electrical installations.
Our know-how varies from domain MV to domain HV:
Study of the projects.
Study of selectivity.
Testing of electrical networks protections and CCN.
Updating of electrical diagrams of installations.
Commissioning of HV and MV electrical substations.
Rehabilitation of installations of protection for HV and MV electrical substations.
Rehabilitation of auxiliary services of HV and MV electrical substations.
Mounting and Maintenance of equipment and of low voltage installations.
Mounting and Maintenance of high voltage installations.
Installation and wiring of low voltage cabinets.
Testing of HV lines.
On-site training and in our laboratory.
Sampling or Analysis of oil of Transformers.

Our Product range:

Equipements (HV-MV)

Cables LV/MV/HV & Accessory

Protection Relay's



We provide all types of equipment (HV and MV) with a high quality ... for more informations, contact us


We offer the supply of LV / MV / HV cables and accessories from High Voltage cables, the service (confection heads MT, connection, draw of HV cables ....for more informations, contact us

We offer a range of protection relays for High and Medium Voltage electrical installations… for more informations, contact us