• Avantages

    Directly connect to the municipal power grid Ultra long 40+lifespan design Durability Smart power supply Zero harmonic More than 97% power factor Can achieve a maximum voltage regulation range of 6000V
  • Efficiency higher than 98 %

The VARIVOLT

VARIVOLT is an adjustable transformer that allows for voltage regulation between 10V-6000V.

The voltage change occurs on the secondary side of the transformer (changed to continuously adjustable on the secondary side).

The VARIVOLT is equipped with sliders that allow you to regulate voltage continuously and linearly, It can be seen as a transformer with an infinite number of sockets.

This transformer is optimised for installations requiring a variable power supply such as glass and metal furnaces and test platforms.

Frequently Asked Questions

Thanks to the sliders that move along the windings, the VARIVOLT can be fine-tuned.

The number of turns selected on the secondary allows the voltage to be adjusted.

This electrotechnical principle does not interfere with the sinusoid and allows clean control.

The thyristor allows the sinusoid to be cut (phase angle regulation) or only a percentage of the voltage to pass (wave train regulation),

This power electronics technology generates harmonics on the network and causes shocks during voltage adjustments.

To sum up, a thyristor generates harmonics where a VARIVOLT does not.

The VARIVOLT secondary voltage is variable.

For example, with a distribution transformer, you have a voltage of 20,000V on the primary side and 400V on the secondary side.

With a VARIVOLT, you have 20,000V at the primary and a setting from 0 to 400V at the secondary.

Thus the varivolt allows the secondary voltage to be adjusted.

VARIVOLT technology, with cursors in permanent contact with the copper and immersed in the oil, means that transformers can be made from 0 to 10 MVA

The primary voltage, fixed, is from 400V to 36.000V therefore it is adapted to all HV networks worldwide.

The secondary voltage is variable from 0 to 1.000V..

The maximum secondary current is about 10.000A.

Example of installation

Here is an example of an installation. In general, an installation consists of four elements:

  • The VARIVOLT: This is the main component of the installation. It will serve aspower supply for our equipment.
  • The electric connections: the electric connections allow to make a link between the VARIVOLT, the control-command and our equipment.
  • The control-command which, as its name suggests, allows you to check the voltage reaching your equipment.
  • Then, there is our equipment which receives the power.

Installation and start-up

REVIEW OF REQUIREMENTS

  • General outlay of the installation
  • Safety for people and equipement
  • Planning
  • Preliminary studies

TECHNICAL REVIEW

  • Equipment specification
  • Implementation
  • Power distribution
  • Electrical schemes

ON-SITE INSTALLATION

  • Technical definition for subcontracting
  • Selection of suppliers
  • Monitoring

START-UP

  • Regular inspection of construction
  • Test before energizing
  • Industrial test
  • Staff training

Our expertise ranges from design to start-up assistance worldwide for glass, steel, electrochemical industry and platform of electrical tests.

Service

Glassware

Our VARIVOLTs power the first all-electric oven of Verallia.

We contributed to the new Saint-Gobain flat glass production line on the Bhiwadi site in India.

Thanks to our Shelter installation, by offering a turnkey solution in a container, we made it easier and quicker to install the new furnace.

Steel industry

Our VARIVOLTs are used to power a slag remelting furnace.

This VARIVOLT has special features:

The functional part consists of a tank containing the step-down transformer and the VARIVOLT.

Test platform

Siemens uses our VARIVOLTs for their test platform.

Thanks to the precise voltage control provided by our VARIVOLTs, it is possible to carry out a wide range of routine tests such as :

No-load test,Short circuit test,Dielectric test

Hydrogen

This process of creating hydrogen using electrolyzers is based on using electricity to break down water (H₂O) into hydrogen (H₂) and oxygen (O₂).