Large wind turbines

20 kW, 50 kW, 100 kW, 150 kW

Type	JH 20	JH 50	JH 100	JH 150
Power in kW	20	50	100	150
Rotor blades	4	3	3	3
Rotor diameter in m	7.84	11.68	16.52	20.23
Transmission ratio (i)	1 : 5.71	1 : 7.3	1 : 10.3	1 : 12.65
Rotor speed (rpm)	175	137	97	79.3
Torque T_max in (NM)	1197	3743	10464	19200
Inverter for	Isolated operation	Isolated operation	Isolated operation	Isolated operation
Power limitation	Stall	Stall	Stall	Stall
Wind direction alignment	Wind vane	Azimuth	Azimuth	Azimuth
Overspeed control*	Disc brakes	Disc brakes	Disc brakes	Disc brakes
The performance details are based on a wind speed of 12 m/s; the generator speed is 1000 rpm; *additional generator short-circuit braking.