JB/T 6455-1992 Technical Specifications for YB-H Series Marine Flameproof Three-Phase Asynchronous Motors (Frame Size 80-280) JB/T6455-1992 Standard Download Decompression Password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Technical Conditions for YB-H Series Marine Flameproof Three-Phase Asynchronous Motors (Frame Size 80-280)
1 Subject Content and Scope of Application
JB/T6455-1992
This standard specifies the types, basic parameters and dimensions, technical requirements, test methods and inspection rules, as well as marking and packaging requirements for marine flameproof three-phase asynchronous motors used in explosive environments of steel seagoing ships, mobile offshore drilling vessels and fixed platforms. The explosion-proof performance of this series of motors complies with the provisions of GB3836.1 and GB3836.2 and is made into a flameproof type. The explosion-proof marks are d1AT4, dIBT4 and dICT4. They are respectively suitable for places with explosive mixtures of flammable gases or steam and air of IA, IB and IC levels and temperature groups of T1-T4. This series of motors complies with my country's "Steel Seagoing Vessel Classification and Construction Specifications", "Offshore Mobile Drilling Vessel Classification and Construction Specifications" and "Offshore Fixed Test Platform Classification and Construction Specifications". Requirements not specified in this standard shall comply with the provisions of GB755. 2 Reference standards
GB1993
GB2900.25
GB2423.16
GB2423.17
GB1032
Basic technical requirements for rotating electrical machines;
General requirements for electrical equipment for explosive atmospheres; Electrical equipment for explosive atmospheres Flameproof electrical equipment "d"; Motors with frame size 36400, flange number FF55~FF1080 or FT55~Motor dimensions and tolerances
FT1080;
Motor housing protection classification;
Motor cooling method;
Motor structure and installation type code;
Electrical terminology Electrical equipment for explosive atmospheres; Basic environmental test procedures for electrical and electronic products Test J: Mildew test method; Test Ka: Salt spray test Method:
Basic environmental test regulations for electrical and electronic productsBasic environmental test regulations for electrical and electronic productsTest methods for three-phase asynchronous motors;
GB10068.1~10068.2
Vibration measurement methods and limits for rotating electrical machines;GB10069.3
JB/Z346
ZJBK04017
JB/Z294
3Types, basic parameters and dimensions
Test Db: Alternating damp heat test method;
Noise measurement methods and limits for rotating electrical machines
Noise limits:
Packaging, storage and transportation graphic symbols;
Inter-turn insulation test limits for scattered-embedded windings of AC low-voltage motors; Impact test methods for shipboard electrical equipment;
Inter-turn insulation test methods for scattered-embedded windings of AC low-voltage motors. Approved by the Ministry of Machinery and Electronics Industry on August 6, 1992, and implemented on January 1, 1993. JB/T6455-1992. The protection grade of the motor housing is IP44 or IP54, and the terminal box is IP54 (see GB4942.1). The cooling method of the motor complies with IC0141 (see GB1993). The structure and installation type of the motor are IMB3, IMB5, IMB35 and IMV1 (see GB997) and are in accordance with the specifications in Table 1. Customized Table 1
Frame size
80~225
-250~280
Structure and installation code
IMB3(IM1001),IMB5(IM3001),IMB35(IM2001),IMV1(IM3011)The rating of IMB3(IM1001),IMB35(IM2001),IMV1(IM3001) motors is a continuous rating based on continuous duty (S1). 3.4
3.5The rated frequency of the motor is 50Hz, the rated voltage is 380V or the rated frequency is 60Hz, the rated voltage is 440V. The power is 3kW or less, the Y connection method is used, and the other powers are △ connection method. 3.6 The motor shall be manufactured according to the following rated powers: 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 kW. The correspondence between the motor frame number, pole number and power shall be in accordance with the provisions of Table 2. 3.7
JB/T 6455—1992
Continued Table 2
Note: The numbers 1 and 2 after S, M and L represent different powers under the same frame number and speed. 00
3.8 The motors with frame numbers of 80 to 132 use fully enclosed bearings. The bearing chambers of motors with frame numbers of 160 to 280 are provided with oil filling holes and oil drain grooves. 3.9
The installation dimensions and tolerances of the motors shall comply with the provisions of Tables 3 to 6. The overall dimensions shall not be greater than those specified in Tables 3 to 6. mm
Machine frame number
Flange number
Note: 1)
:2, 4
2, 4, 6
4, 6, 8
4, 6, 8
4, 6, 8
139.5±0.7
If the position of the K hole is qualified, A/2 may not be examined. c
G=D-GE, the limit deviation of GE for the machine frame number 80 is (+1°) mm, and for the others it is (+2) mm. P is the maximum limit value.
4) R is the distance from the flange mating surface to the shaft shoulder. Basic
Frame number
Flange number
2, 4, 6
2, 4, 6, 8
4, 6, 8
4, 6, 8
4, 6, 8
4, 6, 8
Note i) G = D-GE, the limit deviation of GE is (*\) mm. 2) P is the maximum limit value.
3) R is the distance from the flange mating surface to the shaft shoulder, 196
Table 6 Vertical installation
Frame not|
130~230
>230~450
JB/T6455--1992
The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 11. Table
Axis, middle
80~250
>250~280
The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 12. Table 12
The maximum size in AB or BB
>100~160
>160~250
>250~400
>400~630
AB is the distance between the outer edges of the motor foot (end view); Note:
BB is the distance between the outer edges of the motor foot (side view). 3.16
Flatness tolerance
The materials used for the motor should be durable, flame-retardant and moisture-proof materials, and the matching parts should be inspected according to the raw material inspection specifications when entering the factory. The material of the motor shaft should comply with the following provisions, and a material report should be provided. Chemical composition of motor shaft material:
Carbon: less than or equal to 0.65%; Silicon: less than or equal to 0.45%; Manganese: less than or equal to 1.5%; 3
Sulfur: less than or equal to 0.04%;
Phosphorus: less than or equal to 0.04%;
Residual elements
Copper: less than or equal to 0.3%;
Chromium: less than or equal to 0.3%;
Pliers: less than or equal to 0.15%; Nickel: less than or equal to 0.4%. The motor shaft should be heat treated according to appropriate processes, and its mechanical properties are: b.
Tensile strength: greater than or equal to 450N/mm\; Service point: greater than or equal to 215N/mm; Elongation of the specimen (8): Longitudinal: greater than or equal to 24%. 3.18 The motor base, end cover, bearing cover and terminal box shall be made of cast iron with a tensile strength of 200N/mm2 and a bending strength of 400N/mm2 or more.
Technical requirements
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. 4.2 Environmental conditions
The altitude shall not exceed 1000m,
JB/T6455—1992
The maximum ambient air temperature varies with the seasons, but shall not exceed 50°C. Working in a deck room without insulation measures is -25°C. c.
The relative humidity of the air shall not exceed 95%.
Tilt (degrees)
4.3 The motor should be able to withstand the impact and vibration generated during normal ship operation. The fastening bolts and nuts should be effectively locked and will not loosen due to vibration.
The motor should have a certain moisture resistance. The test and assessment standards are shown in Article 5.4 of this standard. 4.5 The materials selected for the motor windings and insulating parts should have a certain mildew resistance. The test methods and assessment standards are in accordance with Article 5.5 of this standard.
4.6 The metal plating parts of the motor should have a certain resistance to salt spray corrosion. The test methods and assessment standards are shown in Article 5.6 of this standard. 4.7 The motor should be able to operate reliably under the condition of ship tilting. The test methods and assessment standards are shown in Article 5.7 of this standard. 4.8 Changes in the power supply voltage and frequency of the motor. 4.8.1 When the power supply voltage (rated frequency) of the motor changes from the rated value by no more than 6% to 10%, the motor output power can still maintain the rated value and work reliably.
4.8.2 When the frequency (voltage is rated) of the motor varies from the rated value by no more than ±5%, the motor output power can still maintain the rated value and work reliably.
4.8.3 When the power supply frequency varies within ±5% of its rated value and the motor terminal voltage varies within the range of +6% to -10% of its rated value, and the sum of the absolute values ​​of the percentage changes of the two is no more than 10%, the motor output power can still maintain the rated value and work reliably. Note: Reliable operation means that the motor will not significantly shorten its life if it continues to operate stably. In this case, the performance of the motor is allowed to be different from that specified in this standard, and the temperature rise is allowed to exceed the provisions of Article 4.16. 4.9
When the power, voltage and frequency of the motor are rated, the guaranteed values ​​of its efficiency and power factor shall comply with the provisions of Tables 13 to 16. 199
Frame number
Stall torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
(2 pole)
Stall apparent power
Rated power
Efficiency is determined by 0.5% stray losses of the rated input power of the motor. Note:
Frame size
Stall torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
(4 poles)
Stall apparent power
Rated power
Power factor
Power factor
Slip
Slip
Frame size| |tt||Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
Continued Table 14
(4-pole)
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Table 15 (6-pole)
Frame size
Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Power factor
Power factor
Slip
Slip
Frame size
Stalled-rotor torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
(8 poles)
Stalled-rotor apparent power
Rated power
Note: Efficiency is determined by stray losses of 0.5% of the rated input power of the motor. 4.10
Power factor
When the power, voltage and frequency of the motor are rated, its slip should not be greater than the provisions of Tables 13 to 16. Slip
At rated voltage, the motor stall torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor minimum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor maximum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor stall apparent power SL1, expressed as the per unit value of the rated power (kVA/kw), shall not be greater than the provisions of Tables 13 to 16.
4.15 The tolerance of the guaranteed value of the motor electrical performance shall comply with the provisions of Table 17. Table 17
Rated power 45kW and belowwww.bzxz.net
Rated power above 45kW
Power factor cos
-0.10(1-m)
(1-cos+±)Minimum is -0.02
4.16 The motor adopts F-class insulation. When the ambient temperature does not exceed the provisions of 4.2.b, the temperature rise limit of the motor stator winding and the allowable temperature of the bearing shall not exceed the following provisions. Stator winding temperature rise limit (resistance method): 70K; Bearing allowable temperature (thermometer method): 90℃. The maximum temperature of the motor housing surface (thermometer method) shall not exceed 125℃ when operating under the most unfavorable conditions specified in 4.8; if the ambient air temperature is different from the provisions of 4.2.b, the temperature rise limit shall be corrected according to the provisions of GB755. 4.17 The motor should be able to withstand an overtorque of 160% of the rated torque for 15 seconds when hot and with gradually increasing torque, without sudden speed changes, stalling or harmful deformation. At this time, the voltage and frequency should be maintained at the rated value. 4.18 The motor should be able to withstand an increase in speed to 120% of the rated value for 2 minutes when no-loaded, without harmful deformation.5% stray loss is determined. Note:
Frame size
Stall torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
(4 poles)
Stall apparent power
Rated power
Power factor
Power factor
Slip
Slip
Frame size| |tt||Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
Continued Table 14
(4-pole)
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Table 15 (6-pole)
Frame size
Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Power factor
Power factor
Slip
Slip
Frame size
Stalled-rotor torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
(8 poles)
Stalled-rotor apparent power
Rated power
Note: Efficiency is determined by stray losses of 0.5% of the rated input power of the motor. 4.10
Power factor
When the power, voltage and frequency of the motor are rated, its slip should not be greater than the provisions of Tables 13 to 16. Slip
At rated voltage, the motor stall torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor minimum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor maximum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor stall apparent power SL1, expressed as the per unit value of the rated power (kVA/kw), shall not be greater than the provisions of Tables 13 to 16.
4.15 The tolerance of the guaranteed value of the motor electrical performance shall comply with the provisions of Table 17. Table 17
Rated power 45kW and below
Rated power above 45kW
Power factor cos
-0.10(1-m)
(1-cos+±)Minimum is -0.02
4.16 The motor adopts F-class insulation. When the ambient temperature does not exceed the provisions of 4.2.b, the temperature rise limit of the motor stator winding and the allowable temperature of the bearing shall not exceed the following provisions. Stator winding temperature rise limit (resistance method): 70K; Bearing allowable temperature (thermometer method): 90℃. The maximum temperature of the motor housing surface (thermometer method) shall not exceed 125℃ when operating under the most unfavorable conditions specified in 4.8; if the ambient air temperature is different from the provisions of 4.2.b, the temperature rise limit shall be corrected according to the provisions of GB755. 4.17 The motor should be able to withstand an overtorque of 160% of the rated torque for 15 seconds when hot and with gradually increasing torque, without sudden speed changes, stalling or harmful deformation. At this time, the voltage and frequency should be maintained at the rated value. 4.18 The motor should be able to withstand an increase in speed to 120% of the rated value for 2 minutes when no-loaded, without harmful deformation.5% stray loss is determined. Note:
Frame size
Stall torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
(4 poles)
Stall apparent power
Rated power
Power factor
Power factor
Slip
Slip
Frame size| |tt||Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
Continued Table 14
(4-pole)
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Table 15 (6-pole)
Frame size
Stalling torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
Stalling apparent power
Rated power
Note: The efficiency is determined by the stray loss of 0.5% of the rated input power of the motor. Efficiency
Power factor
Power factor
Slip
Slip
Frame size
Stalled-rotor torque
Rated torque
Minimum torque
Rated torque
Maximum torque
Rated torque
JB/T6455—1992
(8 poles)
Stalled-rotor apparent power
Rated power
Note: Efficiency is determined by stray losses of 0.5% of the rated input power of the motor. 4.10
Power factor
When the power, voltage and frequency of the motor are rated, its slip should not be greater than the provisions of Tables 13 to 16. Slip
At rated voltage, the motor stall torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor minimum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor maximum torque, expressed as the per unit value of the rated torque, shall not be less than the provisions of Tables 13 to 16. At rated voltage, the motor stall apparent power SL1, expressed as the per unit value of the rated power (kVA/kw), shall not be greater than the provisions of Tables 13 to 16.
4.15 The tolerance of the guaranteed value of the motor electrical performance shall comply with the provisions of Table 17. Table 17
Rated power 45kW and below
Rated power above 45kW
Power factor cos
-0.10(1-m)
(1-cos+±)Minimum is -0.02
4.16 The motor adopts F-class insulation. When the ambient temperature does not exceed the provisions of 4.2.b, the temperature rise limit of the motor stator winding and the allowable temperature of the bearing shall not exceed the following provisions. Stator winding temperature rise limit (resistance method): 70K; Bearing allowable temperature (thermometer method): 90℃. The maximum temperature of the motor housing surface (thermometer method) shall not exceed 125℃ when operating under the most unfavorable conditions specified in 4.8; if the ambient air temperature is different from the provisions of 4.2.b, the temperature rise limit shall be corrected according to the provisions of GB755. 4.17 The motor should be able to withstand an overtorque of 160% of the rated torque for 15 seconds when hot and with gradually increasing torque, without sudden speed changes, stalling or harmful deformation. At this time, the voltage and frequency should be maintained at the rated value. 4.18 The motor should be able to withstand an increase in speed to 120% of the rated value for 2 minutes when no-loaded, without harmful deformation.
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