Electrical installations, automation, security systems, data networks, photovoltaic systems, fire detection, access control.

LV/MV Electrical Installations

SPECIALIZED
CONSULTING

Contact us if you’d like to work with a team of specialists with extensive experience!

About Us

Melbo Instal SRL is a company with over 17 years of experience in the field of electrical installations, recognized for its professionalism and the quality of services provided in Timișoara, Arad, and neighboring counties. With a team of 30 specialists and ANRE certifications C1A and C2A, we have implemented complex projects for clients such as Coca-Cola, IKEA, Leroy Merlin Italy, and The Office Timișoara. We work with top-tier equipment from Schneider Electric, ABB, Legrand, Trilux, Zumtobel, OBO, Niedax, Bosch, Schrack, HIKVISION, and Eaton, ensuring complete solutions from design to maintenance, while strictly adhering to safety and energy efficiency standards.

Low and medium voltage electrical installations

Low and medium voltage electrical installations form the backbone of any modern building, ensuring the safe and efficient power supply to all equipment and systems. At Melbo Instal SRL, we provide comprehensive services for the execution, modernization, and maintenance of these installations, tailored to the needs of our clients in the residential, commercial, and industrial sectors. Whether it’s an apartment building, an office headquarters, a production hall, or a shopping center, we ensure that each project is completed in accordance with the highest technical and safety standards.


Low Voltage (LV) Electrical Installations

Low voltage electrical installations are essential for powering buildings, covering lighting, power outlets, force equipment, and security systems. We work with voltages up to 1000V AC and 1500V DC, in compliance with standards I7 and NTE 007/08/00, ensuring proper sizing of cables, selection of suitable equipment, and protection against overloads and short circuits. Our team designs and installs electrical panels, distribution circuits, grounding systems, and protection systems, using certified materials and modern technologies. Each installation is verified using professional equipment, such as Sonel testers, to ensure compliance with ANRE regulations and operational safety. From single-phase or three-phase connections to complex distribution networks, we ensure that each component is correctly integrated and functions optimally.


Medium Voltage (MV) Electrical Installations

Medium voltage installations are designed to power industrial equipment, transformer stations, and distribution networks, operating at voltages between 1kV and 35kV. These require specialized expertise in both design and execution due to the high risks associated with high voltages. Melbo Instal SRL holds ANRE authorizations for medium voltage work and uses state-of-the-art protection and measurement equipment, such as Fluke thermal imaging cameras and grounding system testers. We install line and protection cells, transformers, encapsulated busbars, and distribution panels, complying with safety distances and electrical insulation standards. Our projects include transformer stations, power supplies for industrial machinery, and automation systems, all integrated into a coherent and safe system.


Design and Consulting

Each project begins with a thorough analysis of the client’s needs and the technical characteristics of the building or installation. Our team of engineers develops single-line diagrams, calculates short-circuit currents, sizes conductor cross-sections, and ensures coordinated protection systems, in accordance with IEC 60909 and SR EN 50522 standards. We provide consulting for energy consumption optimization, integration of renewable sources, and implementation of automation solutions. The technical documentation is comprehensive and includes execution plans, operating instructions, and verification files, ensuring transparency and legal compliance.


Execution and Commissioning

The execution of LV/MV electrical installations is carried out by licensed electricians, strictly adhering to occupational safety standards and work procedures under voltage. We use professional equipment from Bosch, Hilti, and Klauke, and all work is continuously monitored to avoid errors and ensure high-quality finishes. After installation is completed, we perform acceptance tests, PRAM measurements, and electrical parameter verifications before commissioning. All installations are tested for short-circuit resistance, thermal stability, and compliance with overvoltage protection requirements.


Maintenance and Periodic Inspections

To ensure trouble-free operation of electrical installations, we offer preventive and corrective maintenance services. We periodically inspect grounding systems, test protection relays, and examine electrical panels, in accordance with standards NTE 010/20/01 and NSSM 111. We quickly identify and remedy any faults, thereby preventing electrocution risks, fires, or unplanned outages. We also offer modernization services for old installations, replacing outdated equipment with energy-efficient and safe solutions.


Customized Solutions for Clients

Each client benefits from a tailored approach, adapted to the specific activity and allocated budget. We have successfully implemented projects for clients such as Coca-Cola, IKEA, Leroy Merlin Italy, and The Office Timișoara, demonstrating our ability to deliver turnkey solutions from design to commissioning. Regardless of project complexity, we commit to meeting deadlines and providing extended warranties for all executed work.

High-Performance Equipment

We work with prestigious brands

Turn to the experts for your project!

The Numbers Speak for Themselves

450

Finished Projects

17

Years of experience

31

Experts

95%

Orders from Referrals

Partners

Customers who trust us

Over the years, we have had the privilege of working with many wellknown companies. We are always happy to provide client references that attest to the quality of our services!

Do you have any questions?

Frequently Asked Questions

What is a low-voltage (LV) electrical system, and where is it used?

A low-voltage electrical installation operates at voltages up to 1000V AC and 1500V DC. These installations are used in residential buildings, offices, shops, schools, and industrial halls to power outlets, lighting, force equipment, and security systems. They are regulated by Standard I7 and must meet strict requirements for circuit sizing, overload protection, and operational safety. At Melbo Instal SRL, we design and execute such installations using certified materials and state-of-the-art equipment, ensuring compliance with ANRE regulations and user safety.

What are the main differences between low-voltage and medium-voltage electrical systems?
What equipment is needed for a medium-voltage electrical system?
How long does it take to install a low-voltage/medium-voltage electrical system?
What inspections are required after an electrical installation is completed?
What is a PRAM check, and why is it important?
How do you properly size electrical conduits for a low-voltage/medium-voltage installation?
What warranties does Melbo Instal SRL offer for the electrical installations it performs?
What happens if the electrical system isn't maintained regularly?
Can I integrate renewable energy sources into my existing electrical system?
What regulations must be followed when installing an electrical system in Romania?
How can I optimize electricity consumption in my building?
Photo Gallery

Our Work, in Pictures

Contact

Shall we set up a meeting?

WhatsApp Image 2026 03 11 at 10.46.38

Guaranteed
Reliability

Quality, experience, and prestige!

Blog

Useful Articles

Protected By
Shield Security