Fandis: Gesamtkatalog 2017

FRAME FANS Frame Fans Introduction Fandis ■ 139 WHAT IS EC TECHNOLOGY? EC stands for Electronically Commutated and combines AC and DC voltages to bring the best of both technologies. The motor runs on DC, but with a normal AC supply. DC motors already have low power consumption but, if used in AC applications, need to convert AC to DC using a bulky, inefficient transformer. The EC fan incorporates voltage transformation within the motor. An electronic PCB board, which takes care of AC to DC transformation and houses the controls, is fitted to the non-rotating part of the motor (stator). PRINCIPLE • Permanent-magnet brushless DC motor • The stator is driven by electronic switches governed by a microcontroller • AC operated (115/230Volts Single phase, 50/60Hz) BENEFITS • Energy savings: minimum power consumption and better efficiency than equivalent AC fan • Extended operating range (230 Vac 140~264Vac; 115 Vac 80~132Vac) • Low motor temperature: for longer lifespan than AC equivalent • Simplicity: electronic and power transformation are completely integrated within the motor • High performance: better airflow and pressure values than an equivalent AC fan EC technology