This standard specifies the type, basic parameters and dimensions, technical requirements, test methods and inspection rules of Y series motors, as well as marking and packaging requirements. This standard is effectively used for Y (IP23) three-phase asynchronous motors (frame size 160~280). Various series of motors derived from this series of motors can also be implemented with reference. JB/T 5271-1991 Y series (IP23) three-phase asynchronous motor technical conditions (frame size 160 ~ 280) JB/T5271-1991 standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Y series (IP23) three-phase asynchronous motor
Technical conditions
(Frame number 160~~280)
1 Theme content and Scope of application
JB 5271- ·91
This standard specifies the type, basic parameters and dimensions, technical requirements test methods and inspection rules as well as marking and packaging requirements of the Y series motors.
This standard applies to Y series (IP23) three-phase asynchronous motors (frame size 160~280) (hereinafter referred to as motors). Various series of motors derived from this series of motors can also be implemented with reference. 2 Reference standards
GB755 basic technical requirements for rotating motors
GB4942.[Motor shell protection classification
GB1993 motor cooling method
GB997 motor structure and installation type code||tt ||Motor dimensions and tolerances (frame size 36~400, flange number FF55~FF1080 or FT55~FT1080) motors GB 4772.1
GB 10068
Rotating electrical machine vibration measurement methods and limits||tt ||GB10069
Measurement methods and limits of noise of rotating electrical machines
GB1032
Test methods for three-phase asynchronous motors
Packaging, storage and transportation icons
GB 191 | Basic parameters and dimensions
3.1 The shell protection level of the motor is IP23 (see GB4912.1). 3.2 The cooling method of the motor is IC01 (see GB1993). 3.3 The structure and installation type of the motor is IMB3 (see GB997). 3.4 The motor rating is a continuous rating based on the continuous working system (S1). 3.5 The rated frequency of the motor is 50Hz, the rated voltage is 380V, and the stator windings are all connected in △: 3.6 The motor should be manufactured according to the following rated power: 5.5, 7.5, 11, 15, 18.5, 22, 30.37, 45, 55, 75, The corresponding relationship between the frame number, speed and power of the 90,110,132kW3.7 electric motor should be as specified in Table 1. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1991-06-28 and implemented on 1992-07-01
187||tt ||No.
Base
160M
1601.1
1601.2
180M
1801.
200M||tt ||200L
225M
250S
250M
280S
280M
3000
15
18.5
22
30
37
45
55
75
90
110| |tt||132
JB5271 91
Table 1
Same as
Step
1500
Power
11| |tt||15
18.5
22
30
37
45
55
75||tt ||90
110
132
Transfer
rate,
Note: The numbers 1 and 2 after L represent the same machine number and base number respectively. Continuous power speed at speed,
r/mina
1000
kw
7.5
11
18.5||tt| |22
30
37
15
55
75
90
3 motor installation dimensions and their The tolerance should comply with the provisions of Table 2, and the overall dimensions should not be greater than the provisions of Table 2 3.8
188
t
18.
22
33| |tt||37
55
..
7.3
5271-91
JB
1982
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088
988|| tt||008
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political
outside
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H||tt| |t
difference
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s29
g'zt
hemp
public||tt| |2900
EFOO
Eto'o-
290.0
eo
and
goose
twenty||tt ||81
090
base version
original size
丽
assemble
2
table||tt ||021
C21
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oft
安
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a
tto\o-| |tt||00
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5
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S032||tt ||Wosa
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1081
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989#| |tt||W09
number
number
seat
pole
189
JB5271
3.9 motor shaft extension Key dimensions and tolerances shall comply with Table 3. Table 3
by
extension diameter
48
55
60
6.5
75
80
key
width
14-.43
16-3.04s
18-8.0413
20.-.052| |tt||22--3.052
91
3.10 The radial runout tolerance at half of the shaft extension length
- should comply with the provisions of Table 4. Table 4
Extension diameter
Shaft
>30～50
750-~80
Circle
Jump
Key
10
Business
11..
12
14-.1
Motion
Public|| tt | | 0.05 | | tt | | 0.06 | | tt | | mm | It is 0.75mm.
3.12 The flatness tolerance of the motor foot supporting surface is 0.20mm for the frame size of 200 and below, and Q for the frame size of 225 and above.25mm.
3.13 The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 5. Table 5
Key
Slot
Width F
14
16
18
20
22
4 Technical requirements
Weight
Degree
Tolerance
0.030
0.037
The electric motor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved through prescribed procedures. 4.1
4.2 The motor should be capable of rated operation under the following altitude, ambient air temperature and ambient air relative humidity conditions. The altitude does not exceed 1ooom.
4.2.1
4.2.2 The maximum temperature of ambient air changes with the seasons, but does not exceed 40℃. Note: If the motor is specified to be used at an altitude exceeding 1000m or at an ambient temperature higher or lower than 40°C, the regulations of GB755 should be followed. 4.2.3 The maximum ambient air temperature is -15℃. 4.2.4 The monthly average maximum relative humidity is 90%, and the monthly average minimum temperature is not higher than 25C. 4.3 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor should be in accordance with the provisions of GB755. 4.4 When the power, voltage and frequency of the motor are rated, the guaranteed values ??of efficiency and power factor should comply with the provisions of Table 6, 190
nun
work
kw||tt| |rate
5.5
7.5
11
75
18.5
22
30
37
45
55
75
90
110
132
3000
88|| tt||89
89.5
90.5
91
91.5
92
92.5
1500||tt| |Effectiveness
87.5
88
89.5
90.5
91.5
92
92.5
93
JB5271—
91
Table 6
step
same as
1000
, %
Rate
85
86.5
88
88.5
89
89.5
90.5
91| |tt||91.5
92
Note: Efficiency is determined by the loss analysis method of measured stray loss, rotation speed
750
83.5| |tt||85
86.5
87.5
88.5
89
89.5
90
90.5||tt ||91
91.5
T/min
3000
0.88
0.89
0.90
1500||tt ||1000
Power factor -cuse
0.79
0.85
0.86
0.87
0.88
at rated voltage Under the condition, the guaranteed value of the ratio of motor stall torque to rated torque should comply with the provisions of Table 7. 4.5
Table 7
work
kw
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110|| tt||132
4.6
rate
3000
1.7
1.8
2.0
1.7||tt| |1.9
1.8
1.7
1.6
Sync
1500
Speed
r/min||tt| |1000
stall torque/rated torque
2
1.9
2
1.9
2
1.8
2.2
1.7
1.8
1.8
1.7
1.8
Under rated voltage, the motor starting process The guaranteed value of the minimum torque should comply with the provisions of Table 8: 0.78
0.81
0.83
0.85
0.87
0.86
0.87
0.88
750
750
0.73
4.71
0.76
0.78
0.81|| tt||0.8
0.81
1.8
1.7
1.8
1.8
191
Gong||tt| |kw
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110
132
rate
3000|| tt||1.1
0. 9
0.8
JB 5271—91
Table 8
Same as
step||tt| |150g
most
small
1.3
1.2
0.9
turn
turn
short /amount
speed,
set
r/min
1000
turn
1.3
1.2||tt ||1.1
0.9
moment
750
1. 2
0.9
0.8
at rated voltage , the guaranteed value of the ratio of the maximum torque of the motor to the rated torque is 2.2 times for 2-pole and 4-pole ones, 4.7 for 6-pole ones and 4.7 for 8-pole ones
is 2.0 times.
4.8
Under rated voltage, the guaranteed value of the ratio of motor locked-rotor current to rated current should comply with the provisions of Table 9 Table 9
Power
kw|| tt||rate
5.5
7.5
11
15
18.5
22
30||tt| |37
45
55
75
90
110
132
3000
7.0
6.8
Shang
step
1500
block
turn
7.0
6.8|| tt||Electricity
turn
flow/amount
speed,
set
r/min
1000
Electricity
Flow
6.5
750
6.0
Note: When calculating the ratio of stalled current to rated current, the rated current value used should be It is obtained based on the guaranteed deviation of rated power, rated voltage, efficiency and power factor (without taking into account tolerances).
192
JB 5271--91
4.9. The tolerance of the guaranteed electrical performance value of the motor shall comply with the provisions of Table 10. Table 10
Item number
3
Efficiency
Electrical performance name
Rated power is 45kW and below
Rated power is 45kW Above
power factor cost
stalled torque
minimum torque
maximum torque
stalled current
0.15(1 —)
0. 10(1--7)
Capacity
(1—cos) is at least -0.02
Difference
guaranteed value -15%; +25% (the regular offer is only stipulated when necessary)
-15% of the guaranteed value
--10% of the guaranteed value
guaranteed +20% of the value
4.10 The motor adopts Class B insulation. When the altitude and ambient air temperature comply with the provisions of Article 4.2, the temperature rise limit (resistance method) of the motor stator winding is 80K; the allowable temperature of the bearing ( Thermometer method) should not exceed 95C. If the altitude or ambient air temperature of the test site is different from the provisions of Article 4.2, the temperature rise limit shall be revised according to the provisions of GB755. 4.11 The motor should be able to withstand the maximum torque value specified in Article 4.7 of this standard (taking into account tolerances) in a hot state and with gradually increasing torque for 15 seconds without sudden changes in speed, stalling or harmful deformation. . At this time, the voltage and frequency should be maintained at rated values. 4.12 The motor should be able to withstand an accidental overcurrent test of 1.5 times the rated current for no less than 2 minutes without being damaged. 4.13 Under no-load conditions, the motor should be able to withstand increasing the speed to 120% of its rated value for 2 minutes without harmful deformation. 4.14 The insulation resistance of the motor stator winding in the hot state or after the temperature rise test should not be less than 0.38MQ. 4.15 The stator winding of the motor should be able to withstand a 1-minute withstand voltage test without breakdown. The frequency of the test voltage is 50Hz. It should be a sinusoidal waveform as much as possible, and the effective value of the voltage is 1760V. 4.16 The stator winding of the motor should be able to withstand the inter-turn impulse withstand voltage test without breakdown. The peak value of the impulse test voltage shall be in accordance with JB/Z346.
4.17 After the stator winding of the motor is tested for 6 cycles according to the 40C alternating damp heat test method specified in GB12665, the insulation resistance should not be lower than 0.38MQ and should be able to withstand the withstand voltage test specified in Article 4.15. If breakdown does not occur, the effective value of the levied voltage is 1500V
4.18 The effective value of the vibration speed measured when the motor is no-load should not exceed the value specified in the grade selected in Table 11 when ordering. Table 11
Frame
No.
Pole
Level
Number
Speciality
Vibration speed||tt| |mm/s
1
2.8
160-~225
2
1
1.8
4- 8
2
2.8
1.5
>225~- 280
2.8
1.5
4.19 The motor is empty The noise value of the A-weighted power level measured during load operation should comply with the values ??specified in Table 12. The tolerance of the noise value is +3dB(A.
4.20 When the three-phase power supply is balanced, the deviation of any blue-phase no-load current of the motor from the average value of the two phases should not be greater than: the average value of the three phases 10%
4.21 The current and loss of no-load and blocked rotor of the motor during the inspection test should be within a certain data range, and the data range should be able to ensure the electric power 103
91
JB 5271---
The motor performance complies with the provisions of Articles 4.4 to 4.9 of this standard. 2 The uneven hook of the motor air gap should not be greater than that specified in Table 13. 4.22
Table 12||tt ||Gong
kw
5.5
7.5
11
15
18.5
22
30
37
15
55
75
90
110
132
8, mm
.%
a.mm
In the table. 8
rate
nominal value of air gap
3000||tt| |85
88
90
92
97
99
0.45
22.0
0.95
15.5
0.50
21.5
1.00
15.0
0.55
Same as
step|| tt||1500
sound
power
76
80
87
89
93||tt| |96
Table 13
0.60
20.5
1.05
14.5
Uneven value, which is defined as
No. 828-80-006
In the formula: 6, , are the air gap values ??measured at a distance of 120° 19.7
1.10
14.0
turn||tt. ||rate
0.65
19.0
1.15
13.5
speed,
level,
0.70||tt ||18.5
1.20
13.0
r/mmin
1000
dB(A)
78
81
84
87
90
0.75
18.0
1. 25
12.5
0.80
17.5
1.30
12.0
750
72
73
81
84|| tt||87
90
0.85
17.0
1. 40
10.0
0.90
16.| |tt||4.23 The motor has a cylindrical shaft extension. If the two parties agree otherwise, the motor is allowed to be made into two shaft extensions. The second shaft extension should be able to transmit reverse rated power, but it can only be driven by a coupling, || tt||4.24 motor should be made with six outlet terminals. Viewed from the extension end of the main shaft, the junction box of the motor should be placed on the right side of the machine base or 1 force. When the two parties agree otherwise, the junction box is allowed to be placed on the left side of the machine base. There should be a grounding terminal in the junction box of the motor. For motors with a rated output of more than 100kW, an additional grounding terminal should be installed on the base, and a grounding mark should be set near the grounding terminal. This mark should ensure that the right motor is fully used. It is not easy to be erased within a period of time.
4.25 When the alphabetical order of the outlet terminal mark is the same as the voltage phase sequence direction of the two-phase power supply, the motor should rotate in the clockwise direction when viewed from the middle end of the main shaft.
194
5 Inspection Rules
JB 5271- 91
5.1 Each motor must pass the inspection before it can be released, and it should be accompanied by a product certificate. 5.2 Each motor should undergo inspection and testing. The inspection and test items include: a. Mechanical inspection (according to the provisions of Articles 5.5 and 5.6 of this standard); b. Determination of the insulation resistance between the stator winding and the casing and the windings (the insulation resistance in the cold state can be measured during the inspection test, and it should be ensured that the insulation resistance in the hot state is not lower than the provisions of Article 4.14 of this standard);.
Determination of DC resistance of stator winding in actual cold state: d.
e.
withstand voltage test;
inter-turn insulation test;
no-load current and loss Determination of;
f.
Note: The no-load characteristic curve needs to be measured during type testing. Determination of locked-rotor current and loss:
Note: The locked-rotor characteristic curve needs to be measured during type testing. Measurement of noise (according to the provisions of Article 5.6 of this standard); h.
Measurement of vibration (according to the provisions of Article 5.6 of this standard): i.
3 In case of the following circumstances, Type testing must be carried out: 5.3
a.
The first trial production or small batch trial production by the manufacturer after identification and finalization; when the change in motor design or process is enough to cause changes in certain characteristics and parameters; b.
When there is an impermissible deviation between the inspection test results and the previously conducted type test results: c.
d.
Regular plug-in tests for batch-produced motors, and random tests every year ·Second-rate. When too many tests are required, the interval between tests may be appropriately extended, but at least one test must be taken every two years. 5.4 The type test items of the electric motor include: a.
h.
c.
d.
e.
All items of inspection test: | |tt|| Temperature rise test:
Determination of efficiency and power factor;
Short-time over-torque test;
Determination of maximum torque;
Starting process Determination of minimum torque;
overspeed test.
g.
The mechanical inspection items of the 5.5 motor include: a. Rotation inspection: When the motor rotates, it should be smooth and brisk without stagnation; b. Appearance inspection: Check whether the assembly of the motor is complete and correct. The paint on the surface of the motor should be dry and complete, evenly painted, and free of stains, damage, cracks, etc.;
Inspection of installation dimensions, overall dimensions and key dimensions: Installation dimensions And the overall dimensions should comply with the provisions of Article 3.8 of this standard: the dimensions of key c,
should comply with the provisions of Article 3.9 of this standard; d. Inspection of circular runout, parallelism and flatness of the foot supporting surface and keyway symmetry: circular runout shall comply with the provisions of Article 3.10 of this standard, and the parallelism tolerance and flatness tolerance of the foot supporting surface shall respectively comply with Article 3.10 of this standard. The provisions of Articles 3.11 and 3.12. The symmetry of the keyway shall comply with the provisions of Article 3.13 of this standard. The flatness of the foot supporting surface and the symmetry of the keyway are allowed to be inspected on the parts. 5.6 A and b in Article 5.5 of this standard must be inspected for each unit, h and i in Article 5.2 and c and d in Article 5.5 can be randomly inspected. The inspection method is formulated by the manufacturer.
5.7 The test methods specified in Article 5.2 (except e, h and i) and Article 5.4 of this standard shall be carried out in accordance with GB1032, e in Article 5.2 shall be carried out in accordance with JB/Z294, and Article 5.2 Article i shall be carried out in accordance with GB10068. h of Article 5.2 shall be carried out according to G1310069 f93
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