This standard applies to the starting performance of single-speed three-phase cage induction motors with a dry voltage of 690V and below. The motor adopts direct starting or star-delta starting, operates in SI duty (maximum continuous rating), and has any protection level. This standard also applies to dual-voltage motors with the same degree of magnetic saturation under two voltages. JB/T 8158-1999 Starting performance of single-speed three-phase cage induction motors with a voltage of 690V and below JB/T8158-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8158
690V
1999-08-06
2000-01-01
JB/T81581999
This standard is a revision of JB/T8158-95 "Starting performance of single-speed three-phase cage-type motors with voltage of 660V and below". JB/T8158 was adjusted from a national standard to an industry standard during the cleanup and rectification of standards: the original standard was formulated in 1986 according to 1EC60034-12:1980. IEC promulgated the first revision of IEC60034-12 in 1992 and the second revision of IEC60034-12 in 1995.
Compared with JB/T8158--95, this standard has modified the writing format of the standard and the technical content has been changed as follows: 1 According to the second revision of IFC60034-12, the name of the standard has been changed to "Starting performance of single-speed three-phase cage induction motors with a voltage of 690V and below"
2 According to the first revision of IEC60034-12, the starting requirements in Chapter 6 and Chapter 10 are changed to: \The motor is allowed to start continuously twice in the cold state (the motor should stop naturally between the two starts), and start in the hot state for one ohm after rated operation". 3 According to the first revision of IEC60034--12, the apparent power loss of the locked rotor is 2 The last two gears for the medium power range are: >25≤63 and 635630
This standard replaces JE8158-95 from the date of implementation. This standard is also proposed by the National Technical Committee for Standardization of Rotating Electric Machines. The drafting units of this standard: Dalian Electric Machine Factory, Shanghai Institute of Mechanical Engineering. The drafters of this standard: Lu Yihua, Zhai Zufang. 1
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JB/T81581999
JB/T8158
This standard applies to the starting performance of single-speed three-phase cage induction motors with a voltage of 690V and below. The motor adopts direct starting or star-delta Starting, operating at S1 duty (maximum continuous rating), and having any protection level: This standard also applies to dual-voltage motors with the same degree of magnetic saturation at two voltages. 2
This standard specifies four design parameters for the starting performance of single-cage induction motors with a voltage of 690V and below. 1 This standard does not require all manufacturers to "produce all four designs of motors. Select any one design according to this standard. The manufacturer shall consult with the user. 2 Special-purpose motors may not be designed according to these four regulations. 3 The torque values ​​and apparent power values ​​given in this standard are limited values ​​(minimum or maximum values, no error) but must be noted. The values ​​shortened by the manufacturer in the sample may include The tolerance should be in accordance with the provisions of GB/T755-1987 "Technical Requirements for Rotating Electric Machines". 3 Design code
This standard specifies the following four designs for domestic motors: 3.1N design
This design is a three-phase cage induction motor with normal torque. The motor adopts direct starting, has 2, 4, 6 or B poles, rated power from 0.4kW to 630kW, frequency of 50Hz or 60Hz 3.2NY design
This design is similar to N design, but uses star-delta starting. The minimum value of the stall torque T during star starting of the motor should not be less than 25% of the corresponding value of the N design (see Table 1): 3.,3 H design
This design is a high torque three-phase cage induction motor. The motor adopts true starting, has 4, 6 or 8 poles, and has a rated power from more than 0.4 kW to 160 kW. The frequency is 50 Hz or 60 Hz.3.4HY design
This design is similar to the H design, but uses star-delta starting. The stall torque T and minimum torque T during star starting of the motor should not be less than 25% of the corresponding values ​​of the H design (see Table 4): Wa pole slow 1999-08-06 tumor
2000-01-01 small lock
attack rate Cui Fan Guo
20.450.63
>0.63 ≤1.0
210 516
216$25
>25≤40
>100 ≤160
>160 $250
>250 ≤400
>400≤630
JB/T8158
Table 1 Minimum value of torque for designed starting performance (the values ​​in the table are standard values ​​of T,)
4 Starting torque for designed starting performance
The starting torque is represented by the stall torque T, the minimum torque T, and the maximum torque T. Each torque is expressed as a per-unit value of the rated speed T and should conform to the corresponding values ​​given in Table 1. These values ​​are the minimum values ​​at rated voltage and have no tolerance. We allow the following values ​​to be exceeded:
At any speed from zero to maximum speed, the starting torque should not be less than 1.3 times the corresponding torque value on the torque curve: The torque curve varies with the square of the speed and is the rated torque at rated speed: The coefficient 1.3 is selected based on the fact that the terminal voltage of the motor must be lower than 10% of the rated voltage during acceleration. The designed blocked rotor apparent power of SN
The blocked rotor apparent power S is the auxiliary apparent power and is expressed as the per-unit value of the rated power P. Its value should not be greater than the provisions of Table 2. The values ​​in Table 2 are independent of the number of poles and are the maximum values ​​at rated voltage and have no tolerance: Table 2 Maximum blocked rotor apparent power S, expressed as the per-unit value of P Power range kw
>6.3 ≤25
Power range, kw
>25≤63
3≤630
Reference N Design starting requirements
The motor designed shall meet the following starting requirements: 1999
JB/T8158
a) The motor is allowed to start continuously for two times in cold state (the motor should stop automatically between two starts), and start once in cold state after rated operation. In the above two cases, the resistance torque generated by the load is proportional to the square of the speed and is equal to the rated torque at the rated speed. The moment of inertia of this load shall meet the requirements of Table 3. Table 3 Load moment of inertia [
kg - m2
Previous: According to the medium value, mr2 (m=mass r-average rotation-radius) is used to express the number
kg·m?
When the output power is the medium value. The load rotation speed should be calculated according to the following formula, and the values ​​in the table are calculated according to this formula: J0.04 po.9p2.5
Where: p—power, kw:
Number of pole pairs
kg·m?
6) In the above two cases, when the temperature of the motor before starting does not exceed the stable temperature under the rated load, it is allowed to start again. Note: Reduce the number of starts as much as possible. Multiple starts will affect the life of the motor. The starting requirements of 7NY design
The starting requirements are the same as those of N design, but the resistance torque must be reduced to make the star connection The starting torque at this time can accelerate certain loads to the required speed: Discussion: See Chapter 6 Note.
8H Design Starting Torque
The starting torque is represented by the stall torque T, the minimum torque T, and the maximum torque T, each of which is represented by the standard value of the rated torque T and should comply with the corresponding values ​​given in Table 4. These values ​​are the minimum values ​​at rated voltage and have no tolerance. However, these values ​​are allowed to be higher.
Power Range
x0.63 ≤1.0
>1.0 ≤1.6
>1.6≤2.5
>6.3≤10
>10 ≤16
>16525
>63100
The values ​​in the table are the standard values ​​of T,
JB/T8158
Table 4H Minimum torque value of design starting performance is missing
T, the value is 1.5 times the corresponding value of N design starting performance, but not less than 2.0T, the value is 1.S times the corresponding value of N design overrunning performance, but not less than 14,, the value is equal to the corresponding value of N design starting performance, but not less than 1.9 and T,9H design stall power
Stalled apparent power S is the apparent power of the input expressed as the nominal value of the rated power P. Its value should not be greater than the provisions of Table 2. The values ​​in Table 2 are independent of the number of poles and are the maximum values ​​at rated voltage. No tolerance, 10H design starting requirements
H design motors should meet the following starting requirements: a) The motor is allowed to start twice in a cold state (the motor should stop naturally between the two starts) and start once in a hot state after rated operation. The resistance torque generated by the load is a constant (independent of the speed) and equal to the rated torque. The moment of inertia of this load should be 50% of the value specified in Table 3
b) In the above two cases, when the temperature of the motor before starting does not exceed the steady-state temperature under rated load, it is allowed to start again: see Chapter 6 for more details.
Starting requirements for 11HY design
Starting requirements are the same as those for II design, but the resistance torque is reduced so that the starting torque during star connection can accelerate certain loads to the required speed. Note: Chapter 6 of the State Note,
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JB/T8158
Center 880b1230www.bzxz.net
19XX Nest XX Cabin
100044
Dai Section x/X
Matrix XXX.XXX
19XX Nest XX Ridge
Purchase XXX.XX Guest
Peng Xian Pole Key Paste
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