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Eco-friendly transformers offer new standards for energy efficiency and environmental sustainability

Home Engineering Electrical Eco-friendly transformers offer new standards for energy efficiency and environmental sustainability

LEGRAND keeps abreast with constantly changing global demand in electrical and digital building infrastructures through the ongoing development of new products and systems that encompass the latest technology and advanced materials.

The company has developed a range of environmentally-friendly cast resin transformers – the Legrand 50 Hz GreenT series – that leads the way in reliability, energy efficiency and environmental responsibility during energy distribution.

Legrand GreenT cast resin transformers – which efficiently transfer electrical power between two different voltage systems, at the same frequency – have significant advantages over other units on the market. Benefits include a reduction in energy consumption, minimal energy waste and improved safety, as well as lower CO2 emissions and greater economic savings.

GreenT cast resin transformers comply with stringent quality, safety and environmental specifications, including the IEC 60076-11:2018 standard. This classification is based on no-load loss (P0) and load loss (Pk) with an average reduction in losses of 15% compared with previous Legrand ranges. The average load factor for this range is considered 30% for continuous use.

These eco-friendly transformers have a partial discharge value <5 pC that is significantly lower than 10 pC, which is the maximum value indicated by the product Standard IEC 60076-11:2018. This translates to higher efficiencies, greater resistance to work stresses and extended service life of the system.

The 60076-11:2018 standard also endorses these transformers for safe usage, storage and transportation in extreme environmental conditions. GreenT transformers, which incorporate the use of high-quality epoxy resins, comply with environmental class E3, climate class C2 and fire behaviour class F1 categories. These units operate safely at ambient room temperature between -25 and +40°C and can withstand a maximum relative humidity level of 95%.

Standard configuration GreenT transformers offer seismic resistance up to 0.2g, with the ability to be fixed to the ground to prevent overturning.

GreenT transformers incorporate advanced materials and the latest technologies in the design to guarantee high-performance, easy installation and low maintenance requirements. Notable features of the magnetic core include HV (high voltage) and LV (low voltage) terminals, that have been modified to facilitate easy connection. The height of the LV terminals has been reduced for easier positioning of the connections for installers, while HV windings have BIL LIST 2 reinforced insulation in critical points of the unit for enhanced safety.

Legrand offers customised solutions based on specific requirements. As such, GreenT transformers are available with the enclosure either mounted or dismantled, to be assembled on-site. There are nine enclosure sizes in this range, with the selection of two types of ventilation grills for each.

Typical installations for GreenT transformers include data centres, shopping malls, hospitals and residential buildings. CRTs are also suitable for photovoltaic (PV) installations and wind power, as well as offshore applications, the railways, shipping and airport facilities.

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