Module: Tuscan::Iec60584::TypeJ

Extended by:
TypeJ
Included in:
TypeJ
Defined in:
lib/tuscan/iec60584/type_j.rb

Constant Summary collapse

T90_RANGE = 
-210.0..1200.0
EMF_RANGE = 
-8.096..69.554

Instance Method Summary collapse

Instance Method Details

#emfr_unbound(t90) ⇒ Object 



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# File 'lib/tuscan/iec60584/type_j.rb', line 9

def emfr_unbound t90
  if t90 < 760.0
    Polynomial.new(
       0.000000000000e+00,  0.503811878150e-01,  0.304758369300e-04, -0.856810657200e-07,
       0.132281952950e-09, -0.170529583370e-12,  0.209480906970e-15, -0.125383953360e-18,
       0.156317256970e-22
    ).solve_for t90
  else
    Polynomial.new(
       0.296456256810e+03, -0.149761277860e+01,  0.317871039240e-02, -0.318476867010e-05,
       0.157208190040e-08, -0.306913690560e-12
    ).solve_for t90
  end
end

#t90r_guess(emf) ⇒ Object 



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# File 'lib/tuscan/iec60584/type_j.rb', line 24

def t90r_guess emf
  if emf < 0.0
    Polynomial.new(
       0.0000000e+00,  1.9528268e+01, -1.2286185e+00, -1.0752178e+00, -5.9086933e-01,
      -1.7256713e-01, -2.8131513e-02, -2.3963370e-03, -8.3823321e-05
    ).solve_for emf
  elsif emf < 42.919
    Polynomial.new(
       0.000000e+00,   1.978425e+01,  -2.001204e-01,   1.036969e-02,  -2.549687e-04,
       3.585153e-06,  -5.344285e-08,   5.099890e-10
    ).solve_for emf
  else
    Polynomial.new(
       -3.11358187e+03, 3.00543684e+02, -9.94773230e+00, 1.70276630e-01, -1.43033468e-03,
        4.73886084e-06
    ).solve_for emf
  end
end