Module: Tuscan::Iec60584::TypeB

Extended by:
TypeB
Included in:
TypeB
Defined in:
lib/tuscan/iec60584/type_b.rb

Constant Summary collapse

T90_RANGE = 
60.0..1820.00
EMF_RANGE = 
0.290..13.821

Instance Method Summary collapse

Instance Method Details

#emfr_unbound(t90) ⇒ Object 



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# File 'lib/tuscan/iec60584/type_b.rb', line 8

def emfr_unbound t90
  if t90 < 630.615
    Polynomial.new(
      0.000000000000e+00, -0.246508183460e-03,  0.590404211710e-05, -0.132579316360e-08, 
      0.156682919010e-11, -0.169445292400e-14,  0.629903470940e-18
    ).solve_for t90
  else
    Polynomial.new(
      -0.389381686210e+01,  0.285717474700e-01, -0.848851047850e-04,  0.157852801640e-06, 
      -0.168353448640e-09,  0.111097940130e-12, -0.445154310330e-16,  0.989756408210e-20,
      -0.937913302890e-24 
    ).solve_for t90
  end
end

#t90r_guess(emf) ⇒ Object 



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# File 'lib/tuscan/iec60584/type_b.rb', line 23

def t90r_guess emf
  if emf < 2.431
    Polynomial.new(
       9.8423321e+01,  6.9971500e+02, -8.4765304e+02, 1.0052644e+03, -8.3345952e+02,
       4.5508542e+02, -1.5523037e+02,  2.9886750e+01, -2.4742860e+00
    ).solve_for emf
  else
    Polynomial.new(
       2.1315071e+02,  2.8510504e+02, -5.2742887e+01,  9.9160804e+00, -1.2965303e+00,
       1.1195870e-01, -6.0625199e-03,  1.8661696e-04, -2.4878585e-06
    ).solve_for emf
  end
end