Bernard Bonnefond S.A.S. products

  We can propose variable power supply by Thyristor, composed of a transformer with fixed contact and with cubicle Thyristor, in particular to feed the FEEDERS in the glass factory, from 10 to 300 kVA.

I.V.R. is an On-load, Stepless Voltage Variation and Current Regulating Equipment, Its Design is close to an Asynchronous Motor with a Wound Rotor. I.V.R. works like a Rotating Field Transformer, Power Range: from 30 kVA to 3 MVA.

BUSBARS from 500 to 50.000 Amps, Always adapted to your needs., Manufactured by our sister Company AMPPELEC,

The high intensity transformer can run until 50,000 Amperes and can be associated with a VARIVOLT in case of intensity of more than 10,000 Amperes.

Transport, erection and commissiong can be insured by our pool of qualified technicians.

From 50 to 3000 rpm

Exciter equipment

•  rotor
•  stator
•  Diodes plate

Regulation control by

• Stress automatic mode (AVR)
•  Manually or field current (FCR)
• Power factor
• Reactive power (VAR)

   Bernard Bonnefond also assures maintenance of rotor and stator of rotating machines. Photos on this page show a rotor of wind turbine totally reconditionned. After market business can be insured by our team of specialized technicians. Original spare parts and fast and competent help in the event of a failure.

Low Speed Generators, Classic, Direct Drive, Wound Poles. From 50 to 500 rpm and from 200 kVA to 20 MVA.

STATOR                 
Simple winding
Reduced outside size
ROTOR
Permanent magnets
Reduction of the number of pairs of poles thanks to a functioning with reduced frequency

VARIVOLT is a variable transformer allowing to adjust voltage on load from 200 kVA to 30 MVA.  The voltage change takes place at the transformer`s secondary (the primary is fixed). 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.