• Name: YZR series hoist and crane electric motor
  • Number: YZR 00126
  • Time: 2015-05-21
  • Views : 177

    YZR series hoist and crane electric motor  


     These series of three phase metallurgical industrial and crane motors, with wound or squirrel cage rotor are specially designed to drive metallurgical industrial cranes and other similar machine, it has excellent overloading capability and high mechanical strength. Therefore, it is well suited for short duty cycle, or intermittent periodic duty, and on equipments with frequent starting and breaking or are subject to vibration and shock.
The standard range of power output and mounting dimensions complies with the recommended standard of IEC60072. The relation between range of power output and mounting dimensions are similar to the Japanese standard (JEM1202) and German standard(DIN42681),therefore most of them can be interchanged.
 The motor can be operated well up to altitude of 1000m.

● There are two insulation class F and H, class F is applicable to temperature condition not exceed 40℃, class H is suitable for metallurgical industrial sites where ambient temperature is below 60℃. Both have the same data.
● The motor posses a better enclosure with protection degree IP44 for normal site condition, IP54 for metallurgical industrial condition.
● YZR series three phase induction metallurgical industrial and crane motor with wound rotor is complying with the standard ZBK26008-89. The YZ series 3-phase induction metallurgical industrial and crane motor with squirrel-cage rotor comply with the standard ZBK26007-89.
● Motor’s rated voltage and frequency is 380/50Hz.

     These motor are well suit to intermittent heavy duty operation. It can be classified into the following categories according different loading conditions:

1, Short Time Duty(S2): Operation is under constant load in fixed time and the motor is resting or de-energizing when the heat balance is not reached. In a period of time, the motor is cooled and the temperature difference between motor and medium is limited within 2K.

2, Intermittent Periodic Duty(S3):To run according to series of identical cycles, the running time under constant load and time of rest de-energized are included in period of one cycle(see Fig.1), but the time is shorter and does not make motor to a heat balance condition. The starting current shouldn’t be enough to affect the temperature rise obviously.

3, Intermittent Periodic Duty with Starting(S4): To run according to a series of identical cycles, each cycle is formed by a starting time, a constant load’s time & a rest or de-energized time(see Fig.2), but the time is short without condition making the motor to a heat balance.

4, Intermittent Periodic Duty with Starting and Electric Braking(S5): It runs according to a series of identical cycles, there are starting time, constant load’s time, electric quick braking time and a rest or de-energized time in each cycle, but the motor can’t reach the condition of heat balance in such short time(Fig.3)

Motor Specification

Working environment: Not over 1000 meters sea level.
Insulation class:  F, H
Protection degree: IP44, IP54
Rated voltage: 380V