Factory Electrical Installation: Process and Important Notes



Factory electrical installation is a complex process requiring thorough preparation to ensure the system operates stably and safely. The steps include equipment preparation, surveying and designing, installation, and operational maintenance.

Detailed Factory Electrical Installation Process

The factory electrical installation process includes several important steps. First, it is necessary to prepare transformers to adjust the voltage according to the factory’s power requirements. Industrial electrical systems require high-quality electrical wires to handle maximum load. Next is to survey the construction to determine the placement of devices and design detailed electrical drawings. Finally, implement installation according to the design and ensure electrical safety checks.

The factory electrical installation process is a crucial factor, ensuring the electrical system operates efficiently and safely. Below are detailed steps for effective factory electrical installation:

1. Equipment Preparation

  • Transformers: Commonly used for industrial electricity, ensuring suitability for high voltage like 380V. Brands like Thibidi and ABB are popular choices.
  • Electrical wires: Need to be fully prepared with high quality, such as Cadivi or LS, to handle the heavy load of the factory.
  • Protection and control devices: Include CB, RCCB, electrical cabinets and other necessary devices for industrial electrical systems. Products from Schneider and Mitsubishi are often prioritized.

2. Survey and Design

  • Work surveying: Conduct checks on the condition of the existing electrical system, the locations of necessary equipment installation and assess energy needs.
  • Drawing design: Create detailed electrical drawings based on surveys to ensure the system is designed to meet needs and efficiency is prioritized.

3. Construction Installation

  • Install the main electrical substation: Ensure the substation capacity is set at 150% operational capacity for necessary reserves.
  • Install the power distribution system: Conduct wiring and install distribution devices such as electrical cabinets, CBs to high standards.

4. Checking and Operation

  • Inspect the electrical system: Test the operation of all devices to ensure the factory electrical system runs stably and safely.
  • Trial operation: Operate under actual load to check performance, detect, and promptly rectify outstanding issues.

5. Regular Maintenance and Repair

  • Schedule regular maintenance: Ensure stable operation of industrial electrical systems to avoid serious incidents.
  • Conduct repairs when needed: Be proactive in repairing and replacing damaged equipment to ensure system continuity.

6. Safety and Quality Assurance

  • Comply with safety regulations: Ensure that all electrical systems are installed according to safety standards and do not endanger operators.
  • Quality inspection: Prioritize checking the quality of equipment and installation work to enhance performance and reliability of the factory electrical system.

Factory transformers and electrical wires

Factory electrical installation process with transformers and wires.

Role of Electrical Systems in Factories

Industrial electrical systems are the lifeblood of production and operation in factories. Proper technical installation of factory electrics not only saves costs but also ensures equipment and personnel safety. Using high-quality industrial electrical equipment helps enhance efficiency and ensure factory electrical safety.

In a modern industrial context, the factory electrical system is not just an essential requirement but also a crucial foundation for the success of production activities. This system ensures stable power supply from substations through distribution panels to each area and device in the factory. The presence of reputable brands like ABB, Schneider, and Mitsubishi in the installation and supply of factory electrical equipment is a testament to the quality and reliability of the system.

  • Power Supply: The power and control electrical system plays a central role in providing and maintaining continuous power flow, maximizing the performance of production equipment.
  • Ensure Safety: Protection devices such as switches, fuses, and relays help prevent electrical faults, ensuring safety for workers and minimizing asset damage risks.

To optimize performance, the factory electrical system is integrated with production automation technology, thereby improving work efficiency and saving resources. Automation not only reduces human intervention but also helps businesses save costs and time in the production process.

The next segment requires careful consideration of the basic components of the electrical system:

  • Substations: Convert current from large capacity to suitable energy levels, ensuring stable operation of machinery.
  • Medium and low voltage cabinets: Branch electrical energy to each part within the factory, ensuring stable and efficient consumption.

Finally, the indispensable role of the electrical system is to ensure continuous operation and enhance production efficiency. A stable and safe factory electrical system not only facilitates smooth plant operation but also helps enhance competitiveness in the industry.

Factory and industrial electrical systems

The electrical system ensures the continuous operation of the factory.

Important Notes When Installing Factory Electrical Systems

When installing factory electricity, it is necessary to comply with state electrical safety regulations to ensure the process is safe and efficient. Besides using high-quality industrial electrical equipment, regular maintenance should be performed to ensure the system remains stable and long-lasting.

Designing and installing an electrical system in a factory requires meticulousness and accuracy to ensure performance and safety. Business leaders and system engineers need to focus on several key points to effectively manage this system.

1. Design and Calculation

  • Electrical system design is the first and crucial step. A detailed design not only helps allocate loads reasonably but also supports selecting device types like circuit breakers from reputable brands such as ABB or Schneider, ensuring compatibility and efficiency for the entire factory electrical system.
  • Power calculation demands accuracy to avoid energy waste while sufficiently meeting the full needs of the factory. This is indispensable in any industrial electrical installation project to optimize costs.

2. Safety and Protection

  • Factory Electrical Safety should be prioritized. This includes strict compliance with international and local standards to protect both workers and equipment.
  • To protect the system from lightning, installing a lightning protection system is necessary to avoid damage to electrical infrastructure.

3. Installation Techniques and Process

  • The installation process must always comply with professional procedures and techniques to ensure all devices operate smoothly after installation.
  • Accurate construction is a mandatory requirement to avoid electrical risks that may occur during operation.

4. Cost Saving

  • Investment in equipment and efficient system design plays a crucial role in long-term operational cost savings for the factory.

5. Inspection and Acceptance

  • After installation, inspection and trial run are essential to ensure all system components operate stably.
  • Handover and receive feedback from customers is also an indispensable step to complete the installation process.

6. Compliance with Standards

  • Meeting state electrical safety standards in design and construction is a prerequisite condition to ensure the system operates safely, efficiently, and sustainably.

Expert inspecting factory electrical system

Checking electrical safety is an important step in installation.

Installing factory electricity brings many benefits such as cost-saving and ensuring safety, creating an effective and stable working environment for industrial production activities.

5 Contact QuangAnhcons via Hotline: +84 9 1975 8191 for detailed advice and support in installing professional factory electrical systems.

QuangAnhcons provides professional factory electrical system installation services, from drawing design, equipment installation to regular maintenance, ensuring performance and safety for businesses.

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Quotation scope

Applies to one EVN-supplied substation with oil-immersed transformers at 22/0.4 kV (single-phase: 12.7/0.23 kV), with MV metering VTs/CTs supplied by EVN. The estimate includes the selected equipment, installation, earthing, transformer-to-main-breaker connections, design and connection documentation, and coordination of testing and utility acceptance.

Kiosk, integrated steel-pole and indoor substations include MV switchgear and the entered underground cable route. Other outdoor arrangements use the relevant protection configuration. The final diagram must meet the project connection requirements.

Excludes VAT, cables from the substation switchboard to the MSB/loads, live-line work, harmonic reactors, weak-ground treatment or special piling, land and special fire-protection provisions. Underground routes assume normal construction conditions and exclude road drilling and special reinstatement.

Prices are indicative investment budgets. A formal quotation follows site assessment and agreement on the configuration. Electrical selections are preliminary and require design verification before installation.

Capacity range and application conditions

The catalogue defines the enquiry range of this tool, not universal TCVN capacity limits. Single pole-mounted transformers: 15–100 kVA; three-unit banks: 3×15–3×100 kVA. Platform substations: 100–630 kVA. Steel-pole substations: 100–630 kVA; 750/800 kVA require design verification and local approval. Ground-mounted, kiosk and indoor configurations: 50–10,000 kVA. Not every configuration has a package price or the same structural design.

Reference: EVN Decision 1299/QD-EVN dated 3 November 2017, Volume 1, sections 3.3–3.4. Check the current requirements of the responsible utility before implementation. Kiosks must meet manufacturer ratings and testing requirements (IEC 62271-202); indoor and ground-mounted arrangements must meet project layout, ventilation, structural and fire-protection requirements. For multiple transformers, specify the quantity and capacity of each unit.

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