JB/T 7124-1993 Technical requirements for YF series corrosion-resistant three-phase asynchronous motors (frame size 80 to 315)
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7124-1993
Technical conditions for YF series corrosion-resistant three-phase asynchronous motors (frame size 80~315)
Published on October 8, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
Mechanical Industry Standard of the People's Republic of China
Technical conditions for YF series corrosion-resistant three-phase asynchronous motors (frame size 80~315)
1 Subject content and scope of application
JB/T7124-1993
This standard specifies the types, basic parameters and dimensions, technical requirements, test methods, inspection rules, as well as marking, packaging, and protection of medium-corrosion-resistant and strong-corrosion-resistant three-phase asynchronous motors (hereinafter referred to as motors) The requirements for the service life. This standard applies to motors used in indoor corrosive environments. Motors are divided into indoor medium corrosion protection type (Y-F1) and indoor strong corrosion protection type (Y-F2) according to the severity of the chemical media in the use environment that they can withstand. If the environmental corrosion protection requirements are higher than those specified in this standard, the manufacturer and the user shall negotiate.
Referenced standards
Basic technical requirements for rotating electrical machines
GB4942.1E
Motor housing protection classification
GB1993
GB10069
GB10068
GB1032
Motor cooling method
Motor structure and installation type code
Rotary electrical machine noise measurement method and limit
Rotary electrical machine vibration measurement method and limit
Three-phase asynchronous Motor test methods
Packaging, storage and transportation diagrams
Motor dimensions and tolerances Motors with frame sizes of 36 to 400 and flange numbers of FF55 to FF1080 or FT55FT1080 GB4772.1
JB/Z294
JB/Z346
JB4375bzxz.net
Test methods for turn-to-turn insulation of AC low-voltage motor loose-embedded windings Test limits for turn-to-turn insulation of AC low-voltage motor loose-embedded windings Environmental conditions for use of electrical products in indoor and outdoor corrosive locations ZBK04001 Environmental technical requirements for indoor and outdoor anti-corrosion electrical products Types, basic parameters and dimensions
3.1 The enclosure protection level of the motor is IP54 (see GB4942.1). If you need to order a motor with an enclosure protection level higher than IP54, the user should negotiate with the manufacturer.
3.2 The cooling method of the motor is IC0141 (see GB1993). 3.3 The structure and installation type of the motor are IMB3, IMB5, IMB6, IMB7, IMB8, IMB35, IMV1, IMV3, IMV5, IMV6, IMV15 and IMV36 (see GB997), and they are manufactured according to the provisions of Table 1. Table 1
80~160
180~225
Approved by the Ministry of Machinery Industry on October 8, 1993
Structure and installation code (IM)
B3, B5, B6, B7, B8, B35, V1, V3, V5, V6, V15, V36B3, B5, B35, V1
Implementation on January 1, 1994
250~315
JB/T 7124—1993
Continued Table 1
Structure and installation code (IM)
B3, B35, V1
The rating of the motor is a continuous rating based on the continuous duty system (S1). The rated voltage is 380V. The power is 3kW and below, and the connection method is Y. The other powers are all the rated frequency of the motor is 50Hz, and the connection method is △.
The motor should be manufactured according to the following rated powers: 3.6
0.55，0.75，1.1,1.5，2.2，3,4,5.5,7.5，11,15,18.5，22,30,37,45,55,75,90,110,160,200kw
132，1
The correspondence between the motor frame number and the speed and power should be in accordance with the provisions of Table 2. Table 2
Note: The numbers 1, 2, 3 after S, M, L JB/T 7124—1993
Continued Table 2
represent different powers under the same frame and speed. Motor size and tolerance
The installation dimension tolerance of the motor should comply with the provisions of Tables 3 to 6, and the overall dimensions should not be greater than those specified in Tables 3 to 6. 3
H80~132
0 its gold +0.2
K# quantity code es gas net number (+10
JB/T 71241993
H160~315
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GE-DG.GERERRERSDBSI+O.1
and the business credit of 5 Hui is based on the net standard of the ticket as the product room R large use
H80132
GE=DG.GE's collar seat number difference, machine seat number 80% (+8) 2) P size square maximum collar sales,
3》R is the convex support with the surface height S of the pin row. My net social can be set as a public product
The rest is
JB/T 71241993
JB/T 71241993
H160~225
H80~200
The motor with cam on the end cover is likely to have no induction foot,
H80~132
, 1) GE=DG.GE's silver seat code difference, # serial number 2) P size is the maximum protection,
3>R is the height of the cam to the shaft row, 4>S etiquette installation is based on the net dimension as the product standard, -1 GE-DG.GE's EESE
D PRtsE Daoen
R0AESR0
S My installation R industry takes # net learning technology as the product store JB/T 71241993
H160~225
H80~200
Electric motor with convex green on the end cover
Uneven base,
JB/T 71241993
H180~200
Electric energy
R25~315
Electric camera for taking hot photos
1 [Figure 6] Note: 1) GE=DG, G is the maximum limit of PR, RSASEMYONRR JB/T7124-1993 H180~200 RI5~315 Table 6 Vertical installation, the base is not usually on the yang, and there is a flange on the base. The size and tolerance of the motor shaft extension key shall comply with the provisions of Table 7, Table 7 Shaft extension diameter 18. Yuan.84 22 -1.852 The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 8. Table 8
8s-im
[Figure
JB/T71241993
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 7. Table 7
Shaft extension diameter
20-8 n
22 -1.852
The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 8. 3.8.3
Shaft extension diameter
>30~50
>50~80
Runout tolerance
The radial runout tolerance of the flange stop to the motor axis and the end face runout tolerance of the flange mating surface to the motor axis shall comply with Table 93.8.4
.
Flange stop diameter
130~230
>230~450
>450~680
The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 10. Table 10
80~250
>250~315
The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 11, national runout tolerance
Parallelism tolerance
Note: 1)
The maximum size in AB or BB
>100~160
>160~250
>250~400
>400~630
>630~1000
JB/T7124—1993
AB is the distance between the outer edges of the motor foot (end view). BB is the distance between the outer edges of the motor foot (side view), and the symmetry tolerance of the keyway on the motor shaft shall comply with the provisions of Table 12. Table 12
Keyway width
Technical requirements
Flatness tolerance
Symmetry tolerance
The motor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. Under the following environmental conditions, the motor shall be able to operate normally at rated speed. 4.2.1
Altitude shall not exceed 1000m.
But the maximum shall not exceed 40℃ and the minimum shall not be less than -5℃. The ambient air temperature varies with the seasons.
If the motor is specified to be used at an altitude exceeding 1000m or the ambient temperature is higher or lower than 40℃, it shall comply with the provisions of GB755.
The maximum relative humidity of the ambient air is 95%, and the maximum absolute humidity is 29g/m2.
The ambient air movement speed in the environment shall not exceed 10m/s. There are icing, frost and condensation conditions in the use environment. There are splashing water conditions in the use environment.
There are rodents and other animals that endanger the product in the use environment (except termites). The environmental conditions of chemically active substances and mechanically active substances in the use environment are 3C3 and
3S3 for the medium corrosion protection type Y-F1, and 3C4 and 3S4 for the strong corrosion protection type Y-F2. The environmental parameters of each level are as specified in Table 13 and Table 14. The chemical and mechanically active substances (including gas, mist, sand, and dust) listed in the table refer to one or more of them that exist regularly or irregularly. In the environmental condition level code, the letter \C\ represents the chemically active substance condition, "S" represents the mechanically active substance condition, the number "3\" before the letter represents the climate protection place, and the numbers "3\ and \4\" after the letter represent the severity level of the environmental conditions, which increase in numbers. 9
Dust (floating) mg/m
Dust (settling) mg/md
Sulfur dioxide mg/m3
Hydrogen monoxide mg/m3
Chlorine mg/m2
Hydrogen chloride mg/m2
Hydrogen fluoride mg/m3
Nitrogen mg/m
Nitrogen oxide mg/m3
Note, 1)
JB/T7124-1993
Average value 2
Maximum value"
Average value
Maximum value
Average value
Maximum value
Average value
Maximum value
Average value
Maximum value||t t||Average value
Maximum value
Average value
Maximum value
Type code
Chemically active substances, conditions, levels and parameters
In the ambient air, there is one or more chemically corrosive gases, and their concentration values conform to the values in the table, that is, the maximum value of this level is the limit value or peak value that does not exceed 30 minutes per day. The average value is the average of the long-term values,
converted into the value of nitrogen dioxide.
During the operation of the motor, the deviation of the power supply voltage and frequency from the rated values shall comply with the provisions of GB755, 4.3
and the guaranteed values of its efficiency and power factor shall conform to the provisions of Table 15. When the voltage and frequency are rated,
the motor is in power,
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