NM52/900
	Operational parameters Nominal out put    Power regulation  Cut-in                        Cut-out	900kw  Stall 3,5m/s 25m/s
	Rotor Rotor diameter         Rotor swept area       Number of blades     Rortor revolutions     Rotor Placing	52.2m 2140 m 3 22.4/14.9 rmp Upwind rotor
	Brake system Blade tip air brake          Disc brake	Hydraulic, fall-safe 1pcs hydraulic, fall-safe
	Drive train Gear type Ratio Main shaft Main bearing Cooling	Planetary- parallel ax le 1.67.5(1:81.0-USA) Forged shaft and flange Spherical  roller bearing Heat exchanger with  pump
	Generator Type Nominal voltage Nominal frequence Name plate rating Cooling	Asynchronous.4-6 pole 690V( 600V- USA) 50Hz ( 60Hz-USA) 900/200kw Liquid-cooled with  pumpq
	Yaw system Type Dreve mechanism	Sliding bearing 3 electrical planetary gears
	Tower Type Hub height	Conical, steel, painted According to type approvals
	Controller Type Cut-in-system Phase compensation Remote control	Computer controlling Soft by thyristors Generator no load By modem
	Sensors RPM sensors Temperature sensors Vibrition sensor Meteorology Hydraulic systems	Rotor, generator, yaw system Gear, generator, controller ambient Nacelle, rotor Anemometer, wind vanes Pressure transducers
	Lighting protection According to standard Blades Nacelle	IEC 1024 class1 Receptor  in the blade tips Air rod