ASi Power supplies - FEAS GmbH - #4

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Extra low safety potential PELV (EN 50178) SELV (EN 60950) Kurzschlussfest, Überlast- und leerlaufsicher Input 85 - 270 V or 120 - 400 V AC DC Safety acc. to VDE, EN, UL, CSA Operating status shown by LED Simple mounting on rail acc. to DIN 46277 or wall mounting with screws Vibration proof, suitable for the tropics - epoxy resin casted Conforms to EMC and low voltage directive Regulated output voltage Output separated according to VDE0551 Postfach 1521 D - 22905 AHRENSBURG The switch-mode power supply SNT92ASi is a powerful and robust device to power sensitive loads in a hard industrial environment. These features result from the modern construction with a good radio shielding and high reliability integrated in a functional and stable casing. The short circuit proof output DC voltage is 30.5 V. This power supply is optimally suited for loads requiring high starting currents Application Switch-mode controller ASi certified Earth-Fault-Detection display (EFD) L N AC-input DC-output ASi + brown ASi - blue Shield machine chassis Relais EFD close-contact PE 100,0 79,0 120,0 In the power supply SNT92ASi a flyback converter operates to transform the energy in two steps. During the conducting phase the diode is blocking, the inductor is energized and a magnetic field establishes. There is no electrical transmission; the consumer load is supplied with energy from the capacitor. When the switching transistor opens, the blocking phase begins. The current in the inductor cannot change immediately, discharges through the diode and a negative voltage establishes at the inductor. Now operating like a power source the inductor reloads the capacitor and supplies the consumer with energy. The energy flows from the inductor into the capacitor and the consumer and through the conducting diode back to the inductor. Functional principle Completly embedded with resin in an aluminium housing for mounting on a rail or wall mounting with screws. Design phone: +49 4102 42082 telefax: +49 4102 40930 e-mail: info@feas.com internet: www.feas.com Please read the data sheets and the user manual for further information. input output starting current limiter filter product specification switch-mode power supply: SNT92ASi