Triple-Phase Asynchronous Motor

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.

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

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

8. The moment of inertia Jm ,open-circuit voltage ,no-load current and weight of motor are shown in table 4.

table 4

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

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

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