# Copyright (C) 2010-2011 Richard Lincoln
#
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# furnished to do so, subject to the following conditions:
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from CIM15.CDPSM.Balanced.IEC61970.Wires.PhaseTapChangerNonLinear import PhaseTapChangerNonLinear

class PhaseTapChangerSymetrical(PhaseTapChangerNonLinear):
    """In a PhaseTapChangerSymetrical tranformer the secondary side voltage magnitude is the same as at the primary side. The difference voltage magnitude, &Delta;U, is the base in an equal-sided triangle where the sides corresponds to the primary and secondary voltages. The phase angle difference correpsonds the top angle and can be expressed as follows &alpha; = 2arctan(&Delta;U/2)
    """

    def __init__(self, *args, **kw_args):
        """Initialises a new 'PhaseTapChangerSymetrical' instance.

        """
        super(PhaseTapChangerSymetrical, self).__init__(*args, **kw_args)

    _attrs = []
    _attr_types = {}
    _defaults = {}
    _enums = {}
    _refs = []
    _many_refs = []

