Oil Power Transformers
GBE supplies oil power transformers up to 50 MVA with voltage of 145kV (BIL650), with Off Circuit or On Load Tap Changer. TheOn Load Tap Changer can be either external or internal to the transformer tank. The oil power transformer is made according to constructive and design criteria as to ensures the highest operational reliability and a great performance in the electrodynamic stress, as well as excellent isolation so to avoid problems related to possible network overvoltages. The magnetic core is made with high permeability 45 degrees cut steel sheets in the European or American step lap type. The pack tighteners of the magnetic sheets are sized appropriately to ensure the mechanical sealing, noise reduction, and any problem relating to the handling or stresses of the windings. The MV and HV windings are made of a disc or with transposed cable conductors; they are made with horizontal or vertical winding machines by experienced staff in a controlled environment. The positioning of the coils and the gap between them and between the layers is performed according to the precise indications of the electrical design, as well as the type of conductor and the its processing. The drying and pressing process of the windings prior to assembly is fundamental and is carried out in a furnace with dry air circulation, monitored and recorded temperatures.
The power transformer can have two or more windings and can be fitted with compensation winding.
GBE also produces special transformers and reactors for measurement and testing laboratories. These products are executed according to customer specifications, guaranteeing a constantly high-performance product with a design geared towards specific operating conditions. There are numerous references of supply to testing rooms (ABB, Marelli, General Electric) and the experience we have acquired has allowed us […]
We have already completed numerous, prestigious installations worldwide In all the countries where investments are being made in new transport infrastructures, GBE is the leading the way on the strength of its success as a qualified supplier for the underground systems in Warsaw (Poland), Sofia (Bulgaria), Helsinki (Finland) and Tallinn (Estonia). These are just a […]
For GBE, Objective 4.0: the fourth industrial revolution With the advent of the so-called fourth industrial revolution, thanks to the diffusion of new digital and non-digital technology, the industry is undergoing a profound transformation of the mechanisms that have produced value, innovation and well-being. Once again, GBE is not satisfied to just sit back and […]