Description

When electric transformers are in operation, they emit a characteristic noise resulting from the vibrations of the magnetic laminations they contain. This vibration comes from the 50 Hz alternating current that flows through them, which has a fundamental vibration frequency and several corresponding harmonics of vibration at 100 to 200 Hz. Depending on the load used, the design and the age of the transformer, these vibrations can increase over time. In addition, depending on the installation site, these vibrations may enter into resonance with the frame.

To dampen the noise generated by oil-filled or dry-coated electrical transformers when they are in operation, we have designed the SanerVib^® range. This is a range of low-frequency silentblocks specially developed to provide high anti-vibration performance at transformer excitation frequencies. The SanerVib 99 series is designed to provide up to 99% vibration reduction.

Description of the SanerVib^® range 99:

• Classic 4-support configuration
• Consisting of one or more cores with a high-strength metal spring and a stainless steel fibre cushion at its core.
• Metal design with a modulus of plasticity that varies very little over time, unlike other plastic or elastomer solutions on the market, which have to be changed regularly.
• Reinforced surface treatment so that ageing is close to the life of the transformer.
• All SanerVib80s are made of painted steel, category C2, with a superior anti-corrosion treatment (galvanisation or stainless steel on request).
• Midnight blue as standard, other colours available on request

The SanerVib^® 99 references are sufficient to cover most ranges of electrical distribution transformers up to 7 tonnes. These solutions can be adapted to 40 or 70 mm rollers.

Please contact us for details of the dimensions of SanerVib-99 products. We offer 11 references to meet the needs of your electrical installations.

The SanerVib^® range is made up of several references depending on the support load, wheel dimensions, type of base plate, attenuation required, etc. Please contact us with the characteristics of your site and your requirements for the anti-vibration system.

Depending on the configuration of your project, the SanerVib^® range is available in several versions:

• For your transformers with wheels and up to 80% vibration attenuation: SanerVib 80 range
• Instead of wheels, an anti-vibration pad can be fitted to your transformers: SanerVib 80-SG range (80% reduction) and SanerVib 99-SG range (99% reduction).
• For easy installation on your rolling electrical transformers with an integrated slope, absorbing 80% of vibrations: SanerVib 80-SL range
• A roller-integrated system for your rolling electrical transformers that absorbs 80% of vibrations: VibeR80 range
• For special applications, contact us: SanerVib-SP range

Additional information

Before installation:

It is essential to choose the right reference for your site, taking into account the width of your wheel (so that it fits into the upper support and cannot be moved) and the weight of your transformer (so as not to exceed the recommended compression range).

Maintenance:

The treatment of SanerVib^® has been reinforced, so unlike other solutions, they do not need to be replaced.

Refer to the user manual for further details.

The owner of the equipment is responsible for and liable for any failure to comply with good operating practice and for any failure to deal with anomalies and defects in the field.

Storage facilities for high-voltage substations in contact with polluting products must comply with the standards and laws in force.

The SanerVib^® range has been designed to isolate these vibrations generated by the magneto-constriction of transformers, and in particular its fundamental excitation frequency of 50 Hz and its harmonics of 100 to 200 Hz. All SanerVib^® silentblocks have been tested in specialist SilentFlex^® laboratories.