Three-Phase Isolation Transformers

Engineering-Oriented Power Quality for Critical Industrial Applications

​

Omsan three-phase isolation transformers are specifically designed to provide true galvanic isolation, high power quality, and long-term operational reliability in demanding industrial environments.

By completely separating the primary and secondary systems, Omsan transformers effectively reduce the following effects:

​

• Common mode and differential mode noise

• Voltage transients and switching-related distortions

• Ground loop currents

• Electromagnetic interference (EMI/RFI)

​

As a result, stable voltage conditions and uninterrupted operation are ensured, even in facilities with high harmonic distortion and sensitive loads, such as CNC machines, automation systems, and data infrastructure.

​​

Not a Standard, but an Engineered Product

 

Omsan transformers are not catalog products; each is designed specifically for the application. Design parameters are determined according to actual operating conditions:

​

• Measured load profile and duty cycle

• Total Harmonic Distortion (THD) levels

• Ambient temperature and thermal conditions

• Cooling performance requirements

• System grounding structure

​

This Approach Offers The Following Advantages:

​

• Lower thermal stress under harmonic loads

• Increased insulation life

• Higher system reliability in continuous operation

​​

Performance Advantages

​

• Full galvanic isolation between input and output

• High attenuation against electrical noise and interference

• Design suitable for operation under non-linear loads.

• Stable thermal performance in continuous operation

• High efficiency with low-loss core design

• High mechanical strength suitable for industrial environments

​​

Technical Specifications

​

• Power Range: 0.1 kVA – 2000 kVA

• Frequency: 50 / 60 Hz

• Voltage Levels: Fully customizable

• Insulation Class: F / H (IEC 60085)

• Temperature Rise: 80K / 100K

• Cooling: AN / AF

• Protection Class: IP00 – IP23 (up to IP55 optional)

• Vector Group: Dyn, Yyn, Dd, or application-specific

• Efficiency: Up to 99%

• ​

Standards and Compliance:

​

• IEC 60076

• EN standards

• CE conformity

​

Production and Process Quality

​

Omsan transformers are manufactured with controlled and repeatable production processes:

​

• Precise core arrangement to reduce losses and noise

• Controlled winding voltage for insulation integrity

• Multi-layer insulation for long-term dielectric strength

• Vacuum Pressure Impregnation (VPI) against moisture and vibration

• Mechanical reinforcement for transport and operating durability

​

Testing and Verification

​

All products undergo 100% routine testing in accordance with IEC standards:

​

• Winding resistance

• Voltage ratio and vector group verification

• Impedance measurement

• Loss measurements under load and without load

• Insulation resistance and dielectric tests

​

Optional type tests:

​

• Temperature rise test

• Partial discharge measurement

• Lightning impulse test

​

Each transformer is delivered with complete test documentation and traceability.

​

Proven Performance in the Field

​

Omsan transformers are actively used in industrial facilities with high harmonic content and critical loads:

​

• Reliable operation in CNC and automation systems

• High durability in continuous-duty applications

• Long service life with low maintenance requirements

​

Warranty and Risk Reduction

​

Omsan offers a warranty of up to 10 years, supporting the following advantages:

​

• Lower life-cycle cost

• Reducing unplanned downtime

•  

  Long-term operational security

  ​

What Makes Omsan Different

​

Omsan positions itself not as a standard transformer supplier, but as an engineering solution partner:

​

• Application-specific design (not a catalog product)

• Fast engineering support and short delivery times

• Direct communication with design engineers

• Optimized solutions for harmonic-intensive and sensitive systems

• Competitive cost-performance balance without compromising quality

​​

Application Areas

​

• Industrial production facilities

• CNC machines and machine tools

• Automation and robotic systems

• Data centers and IT infrastructure

• Renewable energy systems

• Marine and rail applications

​

Conclusion

​

Omsan isolation transformers are designed to protect, stabilize, and extend the lifespan of your electrical systems. They are not just components; they are critical parts of power quality and system reliability.

​

Request Engineering Support

​

​Contact us for a project-specific assessment.

​​​