Design of electrical substations with Edmar transformers.
- Grupo Edmar
- Sep 9
- 3 min read
September 09, 2025 - Electrical substations with Edmar transformers.
Design of electrical substations with Edmar transformers.
Electrical substations are key facilities for ensuring the reliable and safe delivery of power to industries, businesses, residences, and infrastructure projects. Simply installing equipment isn't enough; true success depends on a comprehensive design from the outset. In this article, we review the most important points to consider when designing an electrical substation with Edmar Group transformers.
Importance of design in system reliability
A well-designed electrical substation makes the difference between a stable supply and a system plagued by recurring failures. Electrical system reliability depends on correctly calculating current and future demand, selecting the right components, and anticipating growth scenarios.
For example, if an industrial plant plans to expand its production over the next five years, the substation design must consider this additional demand from the outset. Otherwise, part of the facility would have to be redesigned, which is much more costly.
Simply put, design is the foundation for ensuring continuity, avoiding blackouts, and reducing both technical and economic risks.
Proper Selection of the Transformer.
The transformer is the heart of the substation, and its correct selection directly impacts daily operations. Key factors include:
Capacity in kVA: defined based on present and future load.
Winding type: aluminum–aluminum or copper–copper, depending on the budget and efficiency sought.
Cooling type: dry (recommended for indoor or fire-sensitive areas), mineral oil (most common and economical), or vegetable oil (an environmentally friendly and safe alternative).
Cabinet design: Carbon steel or stainless steel, depending on the environment and expected corrosion level.
At Grupo Edmar, we offer transformers manufactured under strict standards, tailored to the needs of industrial, commercial, and infrastructure projects, always with competitive prices and extended warranties.
Substation configuration and layout.
The way equipment is arranged is vital to achieving a functional and safe installation. An efficient layout considers:
Easy access for operation and maintenance.
Location of switches and disconnectors at strategic points.
Adequate separation between equipment to avoid electric arcs.
Modular design that allows for future expansion.
For example, in an industrial park where growth is projected, additional space can be created for the installation of a second transformer without having to modify the entire civil works.
A good configuration also allows for rapid response to emergencies, reducing downtime in the event of a failure.
Safety factors in design.
Security shouldn't be viewed as an additional expense, but rather as a mandatory investment. Some of the points to consider include:
Reliable grounding systems.
Minimum safety distances between drivers and equipment.
Use of insulators and protections appropriate to the operating voltage.
Fire detection and suppression systems in oil-filled transformers.
Restricted areas with signage to prevent access to unauthorized personnel.
An accident at a substation can mean losses in the millions, so every safety measure implemented from the design stage increases reliability and protects the investment.
Preventive Maintenance from the design stage.
Maintenance should not be thought of as something that happens after the substation is installed, but rather from the design phase. Planning access spaces, adequate ventilation, and components that require less intervention greatly facilitates future work.
Example: A substation designed with wide walkways allows technicians to enter with test equipment without having to dismantle structures.
Furthermore, choosing high-quality transformers, such as those from Grupo Edmar, reduces the frequency of failures and, therefore, maintenance costs throughout the project's lifespan.
Cost optimization and energy efficiency.
Smart design can generate significant savings in the medium and long term. It's not just about reducing installation costs, but also about considering operation over the next 20 or 30 years.
High-quality transformers have lower energy losses, which translates into savings on your electricity bill. Furthermore, proper selection of conductors and accessories reduces the risk of overheating and extends the lifespan of the equipment.
In this sense, Grupo Edmar stands out for offering transformers with an excellent cost-benefit ratio, guaranteeing efficiency and savings for our customers.
Flexibility and Scalability in Future Projects.
A common mistake in substation design is to consider only the current load. However, many companies are growing rapidly and need to increase their electrical capacity.
Having a scalable design—one that includes spaces, modular equipment, or the installation of a second transformer—allows you to adapt to these new needs without having to make excessive investments in modifications.
At Grupo Edmar, we understand this need, and that's why we help our clients select transformers that fit both the present and future of their operations. Grupo Edmar not only manufactures transformers, it offers comprehensive solutions for energy projects. Among our advantages:
More competitive prices than the market.
Fast delivery , even on urgent projects.
Extended warranty , which supports the quality of our equipment.
Thanks to these features, companies from various sectors trust us to design and equip their electrical substations.
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