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What is the electrical motor working method? What do S1, S2, S4 mean?

Views: 1     Author: Site Editor     Publish Time: 2022-11-17      Origin: Site

1) Continuous working method --- S1. When the motor is under constant load, the running time is sufficient to achieve thermal stability.

 

2) Short time working method --- S2. Operate according to the timing under constant load. This time is not enough to make the motor reach thermal stability, and then the motor will be stopped for enough time after energy interruption, so that the difference between the temperature of the motor cooling medium and that of the motor being cooled again is within 2K.

 

3) Intermittent cycle working method --- S3. Operate according to a series of the same work cycles, and each week includes a period of constant load operation time and a period of energy cutoff stop transfer time. Under this working system, the starting current of each cycle will not have a significant impact on the temperature rise.

 

4) Intermittent cycle working method including startup --- S4. Operate according to a series of the same working cycles, and each week includes the affected time when the starting temperature rises significantly, the time when the machine is operated under constant load, and the time when the machine is stopped due to energy failure.

 

5) Intermittent periodic working method including electric braking - S5. Operate according to a series of identical working cycles, and each week includes startup time, constant load operation time, fast electric braking time and power off time.

 

6) Continuous cycle working system --- S6. Operate according to a series of the same working cycles. Each cycle includes a period of no-load operation time, a period of constant load operation time, and a period of turnoff time without energy interruption.

 

7) Continuous cycle working system including electric braking - S7. Operate according to a series of the same working cycles. Each week includes starting time, electric braking time, constant load operation time, etc., and stop the transfer without interruption.

 

8) Continuous cycle working system including corresponding change of load and speed - S8. Operate according to a series of the same working cycles. Each cycle includes one or several periods of constant load operation time at different speeds and one period of constant load operation time at a predetermined speed, a period of turnoff time without energy interruption.

 

9) Non periodic change of load and speed --- S9. The speed and load are regarded as non periodic changes within the allowable range. This working method includes frequent overload, which can far exceed the benchmark load.

 

10) Discrete constant load working method --- S10. Including the working system with no less than four discrete load values (or equivalent load), each load operation time shall be sufficient for the motor to achieve thermal stability, and the minimum load value can be zero within a working cycle.


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