The working system of the motor is a series of load conditions that the motor is subjected to, including starting, no-load, stopping and breaking energy and their duration and sequence. No-load means that the three-phase asynchronous motor is in a rotating state with zero power output. Full load refers to the state of operation at its quota. Shutdown and disconnection refers to the state in which there is neither motion nor electrical or mechanical energy input.

       The type of work system can be divided into continuous, short-time, cyclical or non-cyclical types.

       The periodic duty system includes one or more constant loads with a specified duration, and the motor does not reach thermal stability during the load operation; The load and speed in aperiodic duty system usually vary within the allowable operating range. Three-phase asynchronous motorThe code name of the work system is commonly usedS1~S10To indicate, the following is a brief introduction to several of our more commonly used work system types.

       S1Working system: continuous working system; Maintain operation under constant load to thermal stability.

       S2Working system: short-time working system; Running at a given time under a constant load, the motor is not enough to achieve thermal stability within that time, and then stops and breaks energy, which is long enough for the motor to cool again.S2The duration of the work system should be marked later and should be preferred10,30,60or90Minutes.

       S3Working system: intermittent cycle working system; It is operated according to a series of identical working cycles, each cycle including a period of constant load operation and a period of shutdown and energy break, and the motor does not reach thermal stability during load operation.S3Then the load duration should be markedtP/(tP+tR).

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