## TransformerDataCommon parameters for transformers |

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Basic parameters of transformers are predefined with default values.

Note: ratio n is defined between primary / secondary line-to-line voltage; therefore the user has to take into account primary and secondary connection!

n_phase |
Value: 1 Type: Real Description: Ratio primary voltage per phase / secondary voltage per phase |
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C1 |
Value: "Y" Type: String Description: Choose primary connection |

C2 |
Value: "y" Type: String Description: Choose secondary connection |

n |
Value: n_phase * (if C1 == "D" and (C2 == "y" or C2 == "z") then 1 / sqrt(3) else if C1 == "Y" and C2 == "d" then sqrt(3) else 1) Type: Real Description: Ratio primary voltage (line-to-line) / secondary voltage (line-to-line) |

R1 |
Value: 5E-3 / 3 Type: Resistance (Ω) Description: Primary resistance per phase at TRef |

T1Ref |
Value: 293.15 Type: Temperature (K) Description: Reference temperature of primary resistance |

alpha20_1 |
Value: 0 Type: LinearTemperatureCoefficient20 (¹/K) Description: Temperature coefficient of primary resistance at 20 degC |

L1sigma |
Value: 78E-6 / 3 Type: Inductance (H) Description: Primary stray inductance per phase |

R2 |
Value: 5E-3 / 3 Type: Resistance (Ω) Description: Secondary resistance per phase at TRef |

T2Ref |
Value: 293.15 Type: Temperature (K) Description: Reference temperature of secondary resistance |

alpha20_2 |
Value: 0 Type: LinearTemperatureCoefficient20 (¹/K) Description: Temperature coefficient of secondary resistance at 20 degC |

L2sigma |
Value: 78E-6 / 3 Type: Inductance (H) Description: Secondary stray inductance per phase |