YZR,YZ series electric motors for lifting and metallurgyDetailed product description：

Characteristics and Applications:

The YZR and YZ series electric motors for lifting and metallurgy have the characteristics of high overload capacity and high mechanical strength, making them particularly suitable for driving various types of lifting and metallurgical machinery or other similar equipment.

The YZR series lifting and metallurgical motors are wound rotor motors, which comply with JB/T10105 "Technical Conditions for YZR Series Lifting and Metallurgical Three phase Asynchronous Motors with wound rotors". The YZ series lifting and metallurgical motors are cage type motors. Complies with JB/T10104 "Technical Conditions for YZ Series Three phase Asynchronous Motors with Winding Rotors for Lifting and Metallurgy".

YZR, YZ series lifting and metallurgical electric motors motor performance:

The working cycle of this series of motors is divided into eight types: S2, S3, S4, S5, S6, S7, S8, and S9. The reference working cycle is S3-40% (i.e. working cycle is S3, load duration is 40%, and each cycle is 10 minutes). The following are the most commonly used working systems for this series of electric motors.
1. Short term work schedule (S2)
Run at a constant load for a given time, stop and disconnect the motor for a period of time before reaching thermal stability, and allow the motor to cool down again to within 2K of the temperature difference with the cooling medium.
2. Intermittent cycle work system (S3)
Operate according to a series of identical working cycles, each cycle including a constant load operating time and a shutdown and energy cut-off time, but its operating time is short enough to achieve thermal stability of the motor, and in this working system, the starting current has no significant effect on temperature rise.
3. Including intermittent cycle working system for starting (S4)
Operate according to a series of identical work cycles, each cycle including a start-up time, a constant load operation time, and a shutdown and power-off time (see Figure 3), but these times are relatively short and not sufficient to achieve thermal stability of the motor.
4. Intermittent cycle working system including electric braking (S5)
Operate according to a series of identical work cycles, each cycle including a start-up time, a constant load operation time, a rapid electric braking time, and a shutdown and power-off time, but these times are relatively short and not sufficient to achieve thermal stability of the motor.
5. The electric motor can operate normally under the following conditions.
(1) The ambient temperature should not exceed 40 ℃ (for general environments) or 60 ℃ (for metallurgical environments);
(2) Altitude not exceeding 1000m;
(3) Frequent mechanical vibration and impact;
(4) Frequent starting, braking (electrical or mechanical), and reversing.
The rated frequency of the motor is 50Hz and the rated voltage is 380V.
7. Connection method: Stator windings with a power of 132kW or less are connected using the Y connection method, while the rest are connected using the △ connection method. Motors with the Y connection method can have a zero point lead wire added.
The rated output power and synchronous speed under the reference working system (S3-40%) are shown in Table 1.

Table 1

base	synchronous speed	one thousand	seven hundred and fifty	six hundred
Frame	Synchronous speed	r/min	r/min	r/min
112M		one point five
132M1		two point two
M2		three point seven
M1		five point five
160M2		seven point five
L		eleven	seven point five
180L		fifteen	eleven
200L		twenty-two	fifteen
225M		thirty	twenty-two
250M1		thirty-seven	thirty
M2		forty-five	thirty-seven
280S		fifty-five	forty-five	thirty-seven
M		seventy-five	fifty-five	forty-five
315S			seventy-five	fifty-five
M			ninety	seventy-five
M1				ninety
355L1				one hundred and ten
L2				one hundred and thirty-two
400L1				one hundred and sixty
L2				two hundred

When using the benchmark working system, the maximum torque and locked rotor torque of YZ series motors at rated voltage are guaranteed to the rated torque, as shown in Table 2.

Table 2

Rated power (kw)	Maximum torque/rated torque	Locked rotor torque/rated torque
Rated Power(kw)	Max. Torque TM	Block Torque
	Rated Torque TN	Rated Torque TN
≤5.5	two	two
＞5.5～11	two point three	two point three
＞11	two point five	two point five

10. The guaranteed value of the ratio of the maximum torque to the rated torque of YZR series motors at rated voltage under the benchmark working system is shown in Table 3.

Table 3

Rated power (kw)	Maximum torque/rated torque
Rated Power(kw)	Max. Torque TM
	Rated Torque TN
≤5.5	two point three
＞5.5～11	two point five
＞11	two point eight

11. The rotational inertia Jm, rotor open circuit voltage, no-load current value, and weight of the motor under the reference working system are shown in Table 4.

Table 4

Model Description:



Structure Introduction:
1. Protection level
The protection level of the casing of metallurgical electric motors is IP54; The protection level of the motor casing for lifting is IP44.
2. Cooling method
Machine base 112-132IC0041
Machine base 160-355IC0141
Machine base 400IC0151
3. The structure and installation type are shown in Table 5

Table 5


4. Insulation level
The insulation level of metallurgical motors is H level, and the insulation level of lifting motors is F.
5. Junction box
The motor stator junction box is located at the top of the machine base and can be wired from either side of the machine base.
6. Transmission mode
Electric motors use couplings or gears for rotation. When using spur gears for rotation, the gear pitch diameter should not be less than twice the shaft extension diameter.
7. Brush holder and electric brush
The brush holder of the YZR series electric motor is equipped with the latest designed constant voltage spring. When the brush wears out during operation, the pressure between the collector ring and the brush can remain unchanged. The brand of the electric brush used is J201, and the dimensions are shown in Table 7.

Table 7

center height	Electric brush size	Outer diameter of collector ring	center height	Electric brush size	Outer diameter of collector ring
Shaft	Brush size	OD. of	Shaft	Brush size	OD. of
height		collector ring	height		collector ring
one hundred and twelve	20×8×32	one hundred	two hundred and fifty	40×12.5×50	one hundred and sixty
one hundred and thirty-two	20×8×32	one hundred	two hundred and eighty	40×20×60	two hundred
one hundred and sixty	25×10×50	one hundred and twelve	three hundred and fifteen	40×20×60	two hundred
one hundred and eighty	25×10×50	one hundred and twenty-five	three hundred and fifty-five	50×20×60	two hundred and fifty
two hundred	32×12.5×50	one hundred and forty	four hundred	2(40×20×60)	two hundred and fifty
two hundred and twenty-five	32×12.5×50	one hundred and forty

8. Bearings
The models of bearings used in this series of motors are shown in Table 6.

Table 6

center height	Installation type	IM1		IM3
Shaft	Mounting	drive end	Non driver end	drive end	Non driver end
height	Arrangement	driving End	Non－driving End	driving End	Non－driving End
one hundred and twelve		three hundred and eight	three hundred and eight	three hundred and eight	three hundred and eight
one hundred and thirty-two		three hundred and nine	three hundred and nine	three hundred and nine	three hundred and nine
one hundred and sixty		three hundred and eleven	three hundred and eleven	three hundred and eleven	three hundred and eleven
one hundred and eighty		three hundred and thirteen	three hundred and thirteen	three hundred and thirteen	three hundred and thirteen
two hundred		three hundred and fifteen	three hundred and fifteen	thirty-two thousand three hundred and fifteen	forty-six thousand three hundred and fifteen
two hundred and twenty-five		three hundred and fifteen	three hundred and fifteen	thirty-two thousand three hundred and fifteen	forty-six thousand three hundred and fifteen
two hundred and fifty		three hundred and sixteen	three hundred and sixteen	thirty-two thousand three hundred and sixteen	forty-six thousand three hundred and sixteen
two hundred and eighty		thirty-two thousand three hundred and twenty	three hundred and twenty	thirty-two thousand three hundred and twenty	forty-six thousand three hundred and twenty
three hundred and fifteen		thirty-two thousand three hundred and twenty-two	three hundred and twenty-two	thirty-two thousand three hundred and twenty-two	forty-six thousand three hundred and twenty-two
three hundred and fifty-five		thirty-two thousand three hundred and twenty-six	three hundred and twenty-six
four hundred		thirty-two thousand three hundred and thirty	three hundred and thirty

9. YZR series collector ring
The collector ring of motors with machine bases 112-250 adopts a plastic molded structure, while the collector ring of motors with machine bases 280-400 adopts an insulated sleeve structure.

Note:
When placing an order, it is necessary to specify the product model, rated power, rated voltage, rated frequency, speed range, and operating characteristics within this range, as well as the location of the junction box.
2. If there are special requirements, after consultation between both parties, other pole numbers, structures, and installation types of motors can be provided, as well as various sensors (speed measuring generators, overspeed switches, encoders, etc.), various brakes (electromagnetic, eddy current), various thermal protection devices, and heating belts.