GR ( SF/D ) product rangeFrom 0.5kW to 90 kWThe TECNED GR (SF/D) Rectifier / Charger series is available from 24Vdc to 650Vdc nominal with up to 600A output in a single enclosure. GR ( 19inch ) product rangeFrom 0.1kW to 50kWThe GR(19 inch) series is an advanced rack-based charger in the TECNED GR product family available with central monitoring and control options. GR ( B ) product rangeFrom 0.1kW to 15kWThe GR(B)-series is the basic charger available in the TECNED GR product family with limited options.