module Tuscan::Iec60584::TypeR

Constants

EMF_RANGE
T90_RANGE

Public Instance Methods

emfr_unbound(t90) click to toggle source
# File lib/tuscan/iec60584/type_r.rb, line 9
def emfr_unbound t90
  if t90 < 1064.18
    Polynomial.new(
       0.000000000000e+00,  0.528961729765e-02,  0.139166589782e-04, -0.238855693017e-07,
       0.356916001063e-10, -0.462347666298e-13 , 0.500777441034e-16, -0.373105886191e-19,
       0.157716482367e-22, -0.281038625251e-26
    ).solve_for t90
  elsif t90 < 1664.50
    Polynomial.new(
       0.295157925316e+01, -0.252061251332e-02,  0.159564501865e-04, -0.764085947576e-08,
       0.205305291024e-11, -0.293359668173e-15
    ).solve_for t90
  else
    Polynomial.new(
       0.152232118209e+03, -0.268819888545e+00,  0.171280280471e-03, -0.345895706453e-07,
      -0.934633971046e-14 
    ).solve_for t90
  end
end
t90r_guess(emf) click to toggle source
# File lib/tuscan/iec60584/type_r.rb, line 29
def t90r_guess emf
  if emf < 1.923
    Polynomial.new(
       0.0000000e+00,  1.8891380e+02, -9.3835290e+01,  1.3068619e+02, -2.2703580e+02,
       3.5145659e+02, -3.8953900e+02,  2.8239471e+02, -1.2607281e+02,  3.1353611e+01,
      -3.3187769e+00
    ).solve_for emf
  elsif emf < 13.228
    Polynomial.new(
       1.334584505e+01,  1.472644573e+02, -1.844024844e+01,  4.031129726e+00, -6.249428360e-01,
       6.468412046e-02, -4.458750426e-03,  1.994710149e-04, -5.313401790e-06,  6.481976217e-08
    ).solve_for emf
  elsif emf < 19.739
    Polynomial.new(
      -8.199599416e+01,  1.553962042e+02, -8.342197663e+00,  4.279433549e-01, -1.191577910e-02,
       1.492290091e-04
    ).solve_for emf
  else
    Polynomial.new(
       3.406177836e+04, -7.023729171e+03,  5.582903813e+02, -1.952394635e+01,  2.560740231e-01
    ).solve_for emf
  end
end