Sontech International AB delivers advanced soundproofing solutions for transformers using patented Acustimet® and
VIBRALON 25 SB technologies to reduce noise and enhance operational environments.
About Sontech International AB
With over 30 years of expertise, Sontech International AB is a global leader in acoustic solutions. Our soundproofing technologies, including Acustimet® and VIBRALON 25 SB, are tailored for transformers, addressing low-frequency hum and high-frequency noise from core vibrations and cooling systems to ensure quieter operations.
We collaborate with utility providers and manufacturers to deliver sustainable, high-performance solutions that reduce transformer noise and meet regulatory standards.
Our Soundproofing Solutions for Transformers
Acustimet®
Acustimet® uses microperforated panels to absorb high-frequency airborne noise from transformer cooling fans and windings, reducing noise by up to 15 dB. Its lightweight and weather-resistant design is ideal for outdoor enclosures.
VIBRALON 25 SB
VIBRALON 25 SB is a viscoelastic material that dampens low-frequency vibrations in transformer cores and bases, minimizing structure-borne noise by up to 10 dB. Its eco-friendly properties ensure durability.
How Soundproofing Transformers Work
Transformers generate noise primarily through magnetostriction in the core and vibrations from cooling systems. The low-frequency hum (50–200 Hz) from core vibrations, caused by alternating magnetic fields, typically reaches sound pressure levels (SPL) of 50–70 dB(A). High-frequency noise (500–2000 Hz) from cooling fans and windings adds to the acoustic profile, often exceeding 60 dB(A) in industrial settings, disturbing nearby communities.
Airborne noise, such as fan noise, is transmitted through the air and requires absorption to prevent propagation. For example, cooling fans operating at 1000–1500 RPM produce broadband noise peaking at 1000 Hz, which can penetrate standard enclosures. Structure-borne noise, caused by core vibrations, travels through the transformer base and surrounding structures, amplifying low-frequency hum in the 50–100 Hz range, which is particularly hard to mitigate due to its long wavelength.
Sontech’s Acustimet® addresses airborne noise with microperforated panels, achieving an absorption coefficient (α > 0.9) in the 500–4000 Hz range. Using Helmholtz resonance, Acustimet® traps and dissipates sound waves, reducing fan and winding noise by up to 15 dB. Its lightweight design (under 2 kg/m²) and weather resistance make it ideal for transformer enclosures, both indoor and outdoor.
Structure-borne noise is mitigated by VIBRALON 25 SB, a viscoelastic material with a loss factor (η > 0.2). Applied to transformer bases or core mounts, it converts vibrational energy into heat, reducing low-frequency noise by up to 10 dB. Its resistance to temperature extremes and industrial fluids ensures long-term performance, while eco-friendly materials align with ISO 14001 standards.
In applications, Sontech’s solutions have reduced transformer noise by 20–25 dB, meeting standards like IEC 60076-10 for power transformers. By integrating Acustimet® and VIBRALON 25 SB into enclosure designs, we provide comprehensive noise control, improving community well-being and regulatory compliance. Our materials are customizable for specific transformer types, from distribution to power transformers.
Applications for Soundproofing Transformers
Sontech’s soundproofing solutions are designed for various transformer types, including:
- Power Transformers: Reducing hum and fan noise in substations for quieter operations.
- Distribution Transformers: Minimizing noise in urban and residential areas to enhance community comfort.
- Industrial Transformers: Controlling vibrations and noise in manufacturing facilities for regulatory compliance.
Our solutions help meet noise regulations and improve operational environments.
Why Choose Sontech for Transformer Soundproofing?
Patented Technologies
Acustimet® and VIBRALON 25 SB deliver industry-leading noise control for transformers.
Custom Solutions
We tailor soundproofing systems for specific transformer models and environments.
Sustainability
Our eco-friendly materials align with sustainable industrial practices.
Frequently Asked Questions About Transformer Soundproofing
Why is soundproofing important for transformers?
Soundproofing reduces low-frequency hum and high-frequency noise from transformers, minimizing disturbances in residential and industrial areas and ensuring compliance with noise regulations like IEC 60076-10.
What causes transformer noise?
Transformer noise results from magnetostriction in the core (50–200 Hz hum) and cooling fan operations (500–2000 Hz), producing sound pressure levels of 50–70 dB(A) that require mitigation.
How does Acustimet® work for transformer soundproofing?
Acustimet® uses microperforated panels to absorb airborne noise from cooling fans and windings, reducing noise by up to 15 dB with an absorption coefficient (α > 0.9) in the 500–4000 Hz range.
What makes VIBRALON 25 SB effective for transformers?
VIBRALON 25 SB’s viscoelastic properties (loss factor η > 0.2) dampen core and base vibrations, reducing structure-borne noise by up to 10 dB, ideal for transformer mounts.
Can Sontech’s solutions be used for outdoor transformers?
Yes, Acustimet® and VIBRALON 25 SB are weather-resistant, suitable for outdoor transformer enclosures, withstanding rain, UV exposure, and temperature fluctuations.
How effective is Sontech’s transformer soundproofing?
Our solutions reduce transformer noise by 20–25 dB, combining Acustimet® for airborne noise and VIBRALON 25 SB for vibrations, significantly improving environmental comfort.
Can Sontech customize soundproofing for specific transformers?
Absolutely. We tailor Acustimet® and VIBRALON 25 SB to fit specific transformer types, sizes, and installation environments, ensuring optimal noise reduction.
Are Sontech’s soundproofing materials sustainable?
Yes, both Acustimet® and VIBRALON 25 SB are eco-friendly, with recyclable components and compliance with ISO 14001 standards, supporting sustainable transformer operations.
How are Sontech’s materials installed on transformers?
Acustimet® panels are mounted on enclosure walls, while VIBRALON 25 SB is applied to bases or core mounts. Sontech provides installation guides and support for seamless integration.
What is the cost of transformer soundproofing?
Costs vary based on transformer size, environment, and customization. Contact us at info@sontech.se for a tailored quote.
Contact Us for Transformer Soundproofing Solutions
Reduce transformer noise with Sontech’s advanced soundproofing solutions. Contact us today for expert consultation.
Or reach us at: info@sontech.se | +46 8 445 60 60
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