CHINA FACTORY YZ,YZ CRANE MOTORS AND METALLURGY,CHINA FACTORY YZ311-8/7.5 KW; YZR 311-8/7.5 KW WITH SHAFT HEIGHTS OF 311MM,CRANE AND METALLURGICAL MOTOR,CRANE AND METALLURGICAL MOTOR CHINA FACTORY

• YZR. YZ. Series motor for crane and metallurgical uses, featured with large overload capacity and adequate mechanical strength, is specially suitable for driving various types of crane and metallurgical machine or other similar equipment.

  YZR series motor is of wound rotor type, while YZ series motor is of squirrel cage type.
  Features

  1. Rated volttage: 380v/50hz, or as required

  2. Protection class: IP44, IP54, IP55

  3. Cooling method: IC411, IC410

  4. Insulation class: F, H

  5. Working conditions:

              Ambinet temperature: <40oC

              Altitude: <1000m
  Performance

  There are eight types of duty type for these series motors, S2,S3,S4,S5,S6,S7,S8 and S9. The basic duty type is S3-40% (duty type is S3, cyclic duration factor is 40%, each cyclic is 10min). The following duty types are most useful to these series motors.
  1.Short-time duty type (S2)
  Operation of constant load during a given time, less than that required to reach thermal equilibrium, followed by a rest and de-energized period of sufficient duration to re-establish machine temperature within 2 deg K of the coolant.
  2. Intermittent periodic duty type (S3)
  A sequence of identical duty cycles, each including a period of operation at constant load and a rest and de-energized period but the operation period are so short that it is not sufficient for the machine to reach thermal equilibrium In this duty type, the cycle is such that the starting current does not significantly affect the temperature rise.
  3. Intermittent periodic duty type with starting (S4)
  A sequence of identical duty cycles, each including a significant period of starting, a period of operation of constant load and a rest and de-energized period, but the operation period are so short that it is not sufficient for the machine to reach thermal equilibrium.
  4. Intermittent periodic duty type with electric braking (S5)
  A sequence of identical duty cycles, each consisting of a period of starting, a period of operation at constant load and a rest and de-energized period, but the operation period are so short that it is not sufficient for the machine to reach thermal equilibrium.
  5. The motor will operate satisfactorily under following conditions:
  (1) Ambient temperature not exceeding 40oC (for crane uses) or 60oC (for metallurgical uses).
  (2) Not above sea-level 1000m.
  (3) Frequent and significant mechanical vibration and shocks.
  (4) Frequent starting, braking (electrical or mechanical) or reversing.
  6. The rated frequency of the motor is 50Hz and rated voltage is 380V.
  7. Connection: The stator winding is connected in Y for 132kW and below and in Δ for the rest. In Y with zero lead is also supplied.
  Technical Parameter

   1. YZ series motors under S3(40%) duty 
  

  Working system CDF Item Model										S3																																																Moment of inertia kg.m2			Weight kg
  										6 Start 6 times every hour
  										15%						25%					40%				60%					100%
  										Rated power        Rated current kw           A						Speed r/min		Rated power Rated current kw           A					Speed r/min			Rated power Rated current kw           A			Speed r/min			TM/TN	Tst/TN			Ist/TN			Efficiency %			cos				Rated power Rated current kw           A					Speed r/min		Rated power Rated current kw           A		Speed r/min
  1000 r/min
  YZ112M-6										2.2			6.5			810		1.8			4.9		892			1.5		4.25	920			2.7	2.44			4.47			69.5			0.75				1.1		2.7			946		0.8	3.5	980			0.022			58
  YZ132M1-6										3			7.5			804		2.5			6.5		920			2.2		5.9	935			2.9	3.1			5.16			74			0.76				1.8		5.3			950		1.5	4.9	960			0.056			80
  YZ132M2-6										5			11.6			890		4			9.2		915			3.7		8.8	912			2.8	3			5.54			78			0.79				3		7.5			940		2.8	7.2	945			0.062			92
  YZ160M1-6										7.5			16.8			903		6.3			14.1		922			5.5		12.5	933			2.7	2.5			4.9			80			0.82				5		11.5			940		4	10	953			0.114			120
  YZ160M2-6										11			25.4			926		8.5			18		943			7.5		15.9	948			2.9	2.4			5.52			81			0.83				6.3		14.2			956		5.5	13	961			0.143			132
  YZ160L-6										15			32			920		13			28.7		936			11		24.6	953			2.9	2.7			6.17			83			0.84				9		20.6			964		7.5	18.8	972			0.192			152
  750 r/min
  YZ160L-8										11			27.4			675		9			21.1		694			7.5		18	705			2.7	2.5			5.1			80			0.76				6		15.6			717		5	14.2	724			0.192			152
  YZ180L-8										15			35.3			654		13			30		675			11		25.8	694			2.5	2.6			4.9			81			0.79				9		21.5			710		7.5	19.2	718			0.352			205
  YZ200L-8										22			47.5			686		18.5			40		697			15		33.1	710			2.8	2.7			6.1			82.5			0.8				13		28.1			714		11	26	720			0.622			276
  YZ225M-8										33			69			687		26			53.5		701			22		45.8	712			2.9	2.9			6.2			84			0.82				18.5		40			718		17	37.5	720			0.820			347
  YZ250M-8										42			89			663		35			74		681			30		63.3	694			2.54	2.7			5.47			85			0.84				26		56			702		22	45	717			1.432			462

Mounting Type
Conventional mounting type and suitable frame size are given in following table