Formula for Self and Mutual Inductance in 3x95mm²+50mm² Shielded Power Cable

The discussion addresses the challenge of calculating self and mutual inductance for a 3-polar power cable with an additional shield conductor (e.g., 3x95mm²+50mm²). No specific closed-form formula for such cables was identified. It was suggested to consult the cable manufacturer, though responses were unavailable. Simplifying the system as a single core was proposed but not confirmed as accurate. Measuring inductance directly with an inductance meter was recommended due to the complexity and multiple influencing factors. Reference was made to Neumann's formula, a classical electromagnetic approach involving double line integrals to calculate mutual inductance between conductors, assuming no ferromagnetic materials. An IEEE paper on mutual inductance in cables was noted but inaccessible due to paywall restrictions. The discussion highlights the difficulty of precise analytical calculation in practical shielded power cables and suggests empirical measurement or advanced electromagnetic modeling as alternatives.
AI summary based on the discussion. May contain errors.