Y, YKK, YKS series Medium/Large Size High Voltage AC motor is suitable for poor surroundings, the site in high required protection and directly application of outdoor. The motors can drive water pump, compressor, transportation machinery and common used machinery.

Y, YKK, YKS series motors are permitted to start at full voltage. It is not allowed to make short circuit connection on rotor winding directly, it is necessary to regulate starting torque by the way of connecting starting transform.

The motor is design into box type construction. The frame is light in weight and good in rigid and is made of steel plates by melding. Air-water cooler is fixed at the top of frame with bolts and consists outside wind circuit in secondary cooling with water pump and water pool for motor, the primary cooling circulation is consisted of fan, cooler inside motor. The primary cooling medium (air) can complete the heat exchange with secondary cooling medium in cooling pipe (circulation water) through outside surface of pipe in the cooler as well as spring etc. Heat transfer conductor.

The rotor winding of Y, YKS,YKK series motor is made of aluminum casting or copper bar.
Comparison of different series High Voltage motorsYKK Series, Air-Air cooling IC616, IP44/IP54/IP55

YKK Series, Air-Air cooling IC611, IP44/IP54/IP55
YKS Seires, Air-water coolig IC81W, IP44/IP54/IP55

N o.	Squirrel-cage motor	Y	YKK	YKS	Y2
	Slip-ring motor	YR	YRKK	YRKS	/
1	Structure	Box-type construction, made up of steel plates welded with each other			Compact struction
2	Cooling method	IC01 or (IC11, IC21, IC31)	IC611 or IC616	IC81W	IC411
3		Natural ventilation, with top mounted protection cover	With top mounted air-air cooler	With top mounted air-water cooler
4	Protection type	IP23	IP44 or IP54	IP44 or IP54	IP54
5	Insulation	F
6	Mounting arrangement	IMB3
7	Voltage available	3kv, 3.3kv;      6kv, 6.6kv;      10kv, 11kv
8	Frequency available	50Hz , 60Hz