A ferromagnetic core is shown in Fig.1. The depth of the core is 7,5 cm and material relative magnetic permeability is 800. The number of the turns is 500. The sizes of the core are given in the Figure. Air Magnetic permeability is μ0= 4π x 10-7. What is the reluctance of this core in kiloH-1 ?

A ferromagnetic core is shown in Fig.1. The depth of the core is 7,5 cm and material relative magnetic permeability is 800. The number of the turns is 500. The sizes of the core are given in the Figure. Air Magnetic permeability is μ0= 4π x 10-7. What is the reluctance of this core in kiloH-1 ?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter29: Automatic Starters For Star-delta Motors

Section: Chapter Questions

Problem 4SQ: The closed transition contactor is energized only on transfer from star to delta. How is this...

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Question

A ferromagnetic core is shown in Fig.1. The depth of the core is 7,5 cm and material relative magnetic permeability is 800. The number of the turns is 500. The sizes of the core are given in the Figure. Air Magnetic permeability is μ₀= 4π x 10^-7. What is the reluctance of this core in kiloH^-1 ?

em--
cm
10 cm
-20 cm
IS cm
500 turns
15 cm
15 cm
Core depth 7,5cm
Figure 1

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