https://www.engineeringtoolbox.com/iec-duty-cucles-d_739.html

The eight - S1 - S8 - IEC duty cycles of operating electrical motors.

https://www.groschopp.com/duty-cycle-need-know/

Aug 4, 2016 ... During the hunt for an electric motor for a particular application, duty ... to its duty rating—a standard your motor manufacturer can help with ...

https://www.bernardcontrols.com/en/our-solutions/our-technologies/motor-duty-cycle

The IEC 60034 standard defines the electric motors' standard duty cycles. According to this standard, S2 duty rating is short time duty: motors using this duty  ...

https://electrical-engineering-portal.com/10-duty-types-three-phase-asynchronous-motors

Dec 11, 2017 ... The term duty defines the load cycle to which the machine is subjected, including, ... For a motor suitable to this duty type, the rating at which the machine may be .... (Continuous-operation periodic duty with electric braking).

https://myelectrical.com/notes/entryid/106/understanding-motor-duty-rating

Dec 12, 2011 ... Series of identical duty cycles each a constant load for a period, ... S7, Continuous operation periodic duty with electric braking, As per S6, but ...

http://www.drivesandautomation.co.uk/useful-information/electric-motor-duty-cycles/

S1, Continuous duty, The motor works at a constant load for enough time to reach temperature equilibrium. S2, Short-time duty, The motor works at a constant ...

http://c03.apogee.net/contentplayer/?coursetype=md&utilityid=elpaso&id=12601

IEC Duty Cycle Ratings are different from NEMA's. Where NEMA usually ... The motor works at a constant load for enough time to reach temperature equilibrium.

http://www.machinebuilding.net/ta/t0379.htm

Sep 7, 2013 ... It is vital to know the differences between these duty cycles and to note what mode of operation each rating refers to. Importantly, establishing ...

https://www.electricalengineeringtoolbox.com/2015/12/ac-motor-duty-cycle-types-as-per-iec.html

The IEC Duty Cycle ratings are different from those of that of NEMA. While NEMA specifies continuous, intermittent or special duty (typically expressed in ...

http://www.alltorquetransmissions.com/electric-motor-duty-ratings/

Nov 14, 2018 ... Electric motors are given a duty cycle rating based on required running conditions, which helps to determine the correct motor to select in a ...