Isolation Transformer: working principle, benefits and applications

Transformer Reactance
12 January 2024
Isolation Transformer: working principle, benefits and applications

PRINCIPLE OF OPERATION OF THE ISOLATION TRANSFORMER

The transformer represents an inertial electrical machine, operating with alternating current and based on the principle of electromagnetic induction. The basic transformer model consists of two windings of conducting wire (solenoids) coiled around a circle of ferromagnetic material called a magnetic core.

The winding that receives the energy is called the primary, while the winding that gives up the energy is identified as the secondary. Transformers operate in both directions, so the role of the primary can be interpreted as the secondary and vice versa.

When a sinusoidal alternating electric voltage is applied to the primary, a magnetic flux with a sinusoidal configuration originates in the core due to magnetic induction.

In accordance with the Faraday-Neumann-Lenz law, this changing flux causes a sinusoidal voltage in the secondary.

This type of transformer, with a 1:1 transformation ratio, is used to provide galvanic isolation in specific operations, reducing the potential risk of electrocution. In such transformers, the electrical insulation between windings is carefully designed. They are used to separate the ground of a measuring device from the ground of the circuit being examined, if both are connected to ground. The distinction between windings is usually ensured by double insulation or through a metal jacket connected to ground.

TRANSFORMERS HAVE ALWAYS BEEN IN ORTEA’S DNA

Since 1969, transformers have been at the heart of our business.
Knowledge and experience gained over the years, from both the design and manufacturing perspectives, enable us to offer high quality, optimized and reliable products.

  • +50,000 TRANSFORMERS MANUFACTURED IN THE THIRD MILLENNIUM
  • HIGH PERFORMANCE/EFFICIENCY REALIZATIONS
  • APPROVED BY GLOBAL CONSULTANTS AND LEADING UPS MANUFACTURERS
  • TYPE TESTS VALIDATED AT INTERNATIONALLY RECOGNIZED LABORATORIES

BENEFITS OF THE TRANSFORMER

  • Adaptation of line voltage to load voltage
  • Provision of additional intermediate voltages
  • Galvanic isolation between the grid and the load
  • Creation of a local neutral
  • Elimination of ground loops
  • Attenuation of current harmonic content
  • Electrostatic shielding as protection from high-frequency noise signals
  • Balancing of voltages or currents (depending on the type of connection)
  • Limitation of short-circuit current
  • Conversion of a three-phase system to single-phase by distributing loads in a balanced manner

Ortea has solid know-how to design and produce complete and integrated solutions to specific customer requirements with extreme flexibility.

Ortea supports the customer at all stages of the project, from specification definition to after-sales service.

APPLICATIONS

  • GENERAL USE
  • DATA CENTER
  • TELECOMMUNICATIONS
  • UPS SYSTEMS
  • MEDICAL
  • RAILROAD
  • MARITIME
  • GALVANICS
  • RENEWABLES
  • PUBLIC BUILDING

Ensure maximum efficiency and safety for your facilities: learn more about OrteaNext’s isolation transformers.

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