Wire Pair Capacitance

Wire Pair Capacitance

Wire Pair Capacitance Capacitance Calculators

Wire Pair Capacitance Model
Capacitance between the pair of wires is:
wire_pair_formulas
Units: Farads

Description
The capacitance calculated using this tool is the capacitance between the wire pair over the wire length. Model accounts for proximity effect of closely spaced wires.

Assumptions and Limitations
Dimensions are in meters.
Wires are assumed to have circular cross sections and to be uniformly spaced over their length.
Wires are assumed to reside in a homogeneous medium having permeability of free space and relative permittivity wirepair_dec.

Constants
Permeability of free space: Formula, Permeability of Free Space H/m
Permittivity of air: Formula, Permittivity of Air F/m

Reference: “Inductance Loop and Partial”, C.R. Paul, Wiley, 2010.

WirePair-Dimensioned-402x270

Inputs

Wire 1 radius
rw1
Wire 2 radius
rw2
Separation
s
Length
l
Relative Permittivity

Outputs

Capacitance: C = 
2.109e-11 F