Engineering & Expertises

Our team works in close collaboration with you to design customized solutions and optimize your installations

We specialize in the design, support, testing and commissioning of your HV substations and networks. We offer a complete range of expertise over the lifetime of your installations.

Engineering

Research and design

We help you define your installation design requirements, for new projects, overhauls, modifications or extensions. We also integrate protection measures to fulfil your plans exactly.

Electrical network modelling
Design and architecture studies
HV and MV studies and calculation notes
HV / MV / LV protection studies and drawings
HV / MV / LV manufacturing drawings and diagrams

Project management support

We help you steer your project from the design stage to the definition of equipment requirements and the choice of manufacturer, right through to the on-site installation.

V1-preliminary design, V2-detailed design studies
Creation of tender documents with budgeting
Analysis of technical bids
Works supervision
Acceptance and as-built file

Testing and commissioning

We carry out the final phase of your project to ensure that the equipment and installations comply with current standards when they are commissioned.

Setting protection relays
Functional testing of installations
Definition of commissioning procedures
Installation commissioning

Administrative support

Prior to starting your project, we help you to anticipate the different milestones.

TFP analysis
Connection procedures
Planning permission
Connection agreement
Operating agreement

Technical expertises

Oil analysis for transformers

Transfo Lab is our oil analysis laboratory for electrical transformers. We diagnose your transformers’ state of health, taking their type, characteristics and use into account.

Different types of analyses: dissolved gas analysis (DGA), dielectric strength, water content, acidity index, analysis of furan derivatives / methanol, corrosive sulfur analysis, PCB analysis, etc.
Fluid and gas sampling on site or using a supplied kit
Analysis and diagnostic report

Find out more about Transfo Lab

Training

As the heir to Merlin Gerin’s expertise, MasterGrid has trained thousands of professionals in the knowledge, maintenance and operation of high-voltage equipment, as well as the handling of SF6 gas.

See our training courses