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  2. Utilization categories - Wikipedia

    en.wikipedia.org/wiki/Utilization_categories

    Series-motors, starting, plugging(1), inching(2), dynamic braking of motors: 60947-4-1 DC-6: Switching of incandescent lamps: 60947-4-1 DC-12: Control of resistive loads and solid state loads with opto-coupler isolation: 60947-5-1 60947-5-2 DC-13: Control of D.C. electromagnetics: 60947-5-1 60947-5-2 DC-14: Control of D.C. electromagnetic loads ...

  3. Motor constants - Wikipedia

    en.wikipedia.org/wiki/Motor_constants

    The motor constant is winding independent (as long as the same conductive material is used for wires); e.g., winding a motor with 6 turns with 2 parallel wires instead of 12 turns single wire will double the velocity constant, , but remains unchanged.

  4. Load profile - Wikipedia

    en.wikipedia.org/wiki/Load_Profile

    Graphs by hour of California's total electric load, the total load less solar and wind power (known as the duck curve) and solar power output. Data is for October 22, 2016, a day when the wind power output was low and steady throughout the day. In electrical engineering, a load profile is a graph of the variation in the electrical load versus ...

  5. Power-voltage curve - Wikipedia

    en.wikipedia.org/wiki/Power-voltage_curve

    Power-voltage curve (also P-V curve) describes the relationship between the active power delivered to the electrical load and the voltage at the load terminals in an electric power system under a constant power factor. [1] When plotted with power as a horizontal axis, the curve resembles a human nose, thus it is sometimes called a nose curve. [2]

  6. Load duration curve - Wikipedia

    en.wikipedia.org/wiki/Load_duration_curve

    Typical Load Duration Curve. [1] A load duration curve (LDC) is used in electric power generation to illustrate the relationship between generating capacity requirements and capacity utilization. A LDC is similar to a load curve but the demand data is ordered in descending order of magnitude, rather than chronologically. The LDC curve shows the ...

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  8. V curve - Wikipedia

    en.wikipedia.org/wiki/V_curve

    V curve for a synchronous motor. In synchronous machines, the V curve (also spelled as V-curve) is the graph showing the relation of armature current as a function of field current in synchronous motors keeping the load constant. The name comes from an observation made by W. M. Mordey in 1893 that the curve resembles a letter V. [1]

  9. IEC 60034 - Wikipedia

    en.wikipedia.org/wiki/IEC_60034

    The IE3 class will be mandatory from 1 January 2015 (7.5–375 kW) and 1 January 2017 (0.75–375 kW). [2] From June 1, 2021, three-phase motors from 0.75 kW to 1000 kW must meet at least IE3 efficiency. Electric motors from 0.12 kW to 0.55 kW must meet at least class IE2 efficiency. [3]