Instruments & Meters

Triple-Phase Asynchronous Motor
# Type:? Asynchronous Motor
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# AC Voltage:? 380V, 415V or customized?
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# Insulation class: H
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# Collector ring: Plastic mould pressed type
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# Protection class: IP44 or IP54
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# Temperature: not exceeding 40℃(for crane uses) or 60℃(for metallurgical uses).
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# Altitude: not exceeding 1000m
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# Base operating mode:? S3-40% in both high speed and low speed

Triple-phase asynchronous motor,

Conic rotor motor,

Crane motor

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Detailed Product Description

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l,YZ series is the newly designed electric motor with the characteristic of large overload capacity and high mechanical strength, enough for driving all sorts of metallurgical machinery and hoisting machine or the other similar equipments.YZR series motors are wound rotors type,while YZseries motors are squirrelcage type. 380V, 50Hz, AC, 3-phase Basic Duty: S3-40% Insulation Class: F, H Frame size: 112mm-280mm
2,The motors will operate normally under the following conditions:
(1) temperature of coolant not exceeding 40℃(for crane uses) or 60℃(for metallurgical uses).
(2) Altitude form sea-level not exceeding 1000m.
(3) Frequent and significant mechanical vibration and shocks.
(4) Frequent starting ,braking(electrical or mechanical) or reversing.
3. The rated frequency of the motor is 50Hz and rated voltage is 380V.
4. Connection : for motors with power of 132KW or below, Y type connection;T others: △ tye connection. Motors using Y connection can also add zero wire.
5. Type codification. |
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6,Output and speed
The range of rated output and ,asynchrouons speed for the basic duty type (S3-40％) are shown in table 1. |
?table 1 |

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Frame | Synchronous speed |
1000r/min | 750r/min | 600r/min |
112M | 1.5 | 　 | 　 |
132? | M1 | 2.2 | 　 | 　 |
M2 | 3.7 |
160? | M1 | 5.5 | 7.5 | 　 |
M2 | 7.5 |
L | 11 |
180L | 15 | 11 | 　 |
200L | 22 | 15 | 　 |
225M | 30 | 22 | 　 |
250? | M1 | 37 | 30 | 　 |
M2 | 45 | 37 |
280? | S | 55 | 45 | 37 |
M | 75 | 55 | 45 |
315? | S | 　 | 75 | 55 |
M | 90 | 75 |
355? | M1 | 　 | 　 | 90 |
L1 | 110 |
L2 | 132 |
400? | L1 | 　 | 　 | 160 |
L2 | 200 |
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For the squirrel-cage type . only ratings bounded with heavy-lines are available. |
7. For YZ series motors ,when working with basic dult type the guaranteed values of the ratio of the maximum torque and the locked rotor torque to the rated torque under rated voltage are given in table 2. table 2 |
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Rated Output (kW) | Max Torque TM / RatedtorquveTN | Max Torque TM / RatedtorquveTN |
≤5.5 | 2 | 2 |
＞5.5-11 | 2.3 | 2.3 |
＞11 | 2.5 | 2.5 |
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8. The moment of inertia Jm ,open-circuit voltage ,no-load current and weight of motor are shown in table 4. table 4 |
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There are eight type of duty type for these series motors ,S2, S3, S4, S5, S6, S7, S8, and S9, The basic duty type is S3—40％, Cduty type is S3 cyclic duration factor is 40％, each cycle is (10min), The following duty types are most useful for these series motors.

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1. Short times duty type (S2)

Operation of constlant load dring a given time, less than that required to reach themal equilibrium followed by a rest and de-energized period of sufticent duration to re-establish machine temperature withir 2 deg K of the coolant (sec figl).

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2. Intermittent periodic duty type (S3)

A sequerce of identical duty cycles, each including a period of operation at constant oad and a rest and de-energized period (see fig2) but the operation period are so short that it is not sufficinet for the machine to reach themnl equilibriun in this duty type, the cycle is such that the starting current does not significanten affect the temprature rise.

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3．Intermittent periodic duty type with starting (S4)

A sequence of identicae duty cycles, each including a sisnificnnt period of starting, a period of oreration of constant load and a rest and de-energized period (see fig3), but the operation periodsare so short that it is not sufficient for the machine to reach thermal equilibrium.

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4． Intermittent period duty type with electric braking (S5)

A sequence of identica duty cycles, each consisting of a period of starting a period of operation at constant coad and a rest and de –energized period, but the opertion period are so short that it is not sufficient for the machine to reach thermal equilibrium (see fig4), but the operation periodsare so short that it is not sufficient for the machine to reach thermal equilibrium.
# # Application


The ranges of applications

This series of motors are specially designed for service on cranes and hoists. They can also be used for similar applications such as material handling, weirs and sluices, and lifts of all types. These motors can serve as auxiliary motors in rolling mills or wherever intermittent drives are required.

YZ Series 3-phase Asynchronous Motor for Metallurgy and Crane Applications is for the various types of metallurgy and crane applications. The motor is approved to be capable for the large overload, be durable and has high mechanical strength. It is the basic model.The motor has been awarded an approved patent from the National Patent Bureau with number of ZL 200820057339.5.Above series motor is available in the direct connection between the motor and the gearbox. Please refer to tables below for details.The motor can be customized designed and produced to meet your request.
# # Design features:


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l,Degree of protection
The clegree of protection of enclosure of metallurgical motors is IP54 and that of crane motors is IP44.
2,Cooling method
Frame 112－132??? IC410 Frame 160－400??? IC411 3, Construction and mounting arrangemens are shown in table 5. |
?table 5 |
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4,Insulation class
The insulation of metallurgical motors is of H class and that of crans motors is F class. 5,Terminal box
The terminal box for the stator is fitted on the top of the frame and connection can be made on either side ,of the framse. 6,Type of drive
Motors are designed for coupling or spursear drive when gear drive is used, the pitch diameter of the pinion should not be less than twice of that of the shaft extension. ? |
7,Bearing
The type of bearing used in these series motors are shown in table 7 |
?table 7 |
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Technical Parameters

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Type | Frame | 1000r/min | 750r/min | 600r/min | Weight(Kg) |
Jm(kg-m) | Open-circuit rotor voltage (V) | No-load Current (A) | Jm(kg-m) | Open-circuit rotor voltage(V) | No-load Current (A) | Jm(kg-m) | Open-circuit rotor voltage(V) | No-load Current (A) |
YZ | 112M | 0.022 | 　 | 2.5 | 　 | 　 | 　 | 　 | 　 | 　 | 58 |
132 | M1 | 0.056 | 　 | 3.1 | 　 | 　 | 　 | 　 | 　 | 　 | 80 |
M2 | 0.062 | 4.1 | 91.5 |
160 | M1 | 0.114 | 　 | 6.5 | 　 | 　 | 　 | 　 | 　 | 　 | 118.5 |
M2 | 0.143 | 9.3 | 　 | 　 | 125 |
L | 0.192 | 11.2 | 0.192 | 11.1 | 152 |
180L | 　 | 　 | 　 | 0.352 | 　 | 12.2 | 　 | 　 | 　 | 205 |
200L | 　 | 　 | 　 | 0.622 | 　 | 18.3 | 　 | 　 | 　 | 276 |
225M | 　 | 　 | 　 | 0.82 | 　 | 24.3 | 　 | 　 | 　 | 347 |
250M1 | 　 | 　 | 　 | 1.432 | 　 | 33 | 　 | 　 | 　 | 462 |
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