The range of solutions for low environmental impact has been revamped
The growing interest in sustainability is nothing new to GBE, that, for several years, has been offering its own “Environmental Range” dedicated to installations where a limited energy load is required in the event of fire and maximum respect for the environment. This commitment is being continued now with a complete overhaul of the “Environmental Range” VPI transformer, both for distribution and for special applications up to class 36kV.
And there are a whole host of technical features in this new product range. The low and medium voltage windings are produced in foil, strip and/or wire, and are helically wound or with a disc. The insulating material used is class F and/or H, guaranteeing high temperatures and space-saving dimensions. Both the windings are vacuum pressure impregnated with class H high cementing polyester resin. Moreover, the design used and the impregnation process provide excellent mechanical sealing which is ideal for special applications, such as starting motors, earthing transformers and reactors, and current limiting reactors.
And then, of course, there are the guarantees in the event of fire. Unlike the self-extinguishing cast resin transformer which in the presence of fire has a combustible mass, albeit limited, the VPI transformer has an extremely low content of inflammable material. Looked at in terms of kg of inflammable material and therefore, kjoules of energy load in the event of fire, the difference is ten times lower.
From an economic standpoint as well, the “Environmental Range” presents some interesting aspects. While it is true that the “Environmental Range” VPI transformer is more expensive than the cast resin transformer because the production process is more complex and time-consuming, it is, however, worth considering the significant savings on construction costs of the housing in which the transformers are installed as they can have very low fire resistance.
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