def comp_Ntspc(self, Zs):
    """Compute the number of turns in series per phase

    Parameters
    ----------
    self : Winding
        A Winding object
    Zs : int
        Number of slot

    Returns
    -------
    Ntspc: float
        Number of turns in series per phase

    """

    Ncspc = self.comp_Ncspc(Zs)

    return Ncspc * self.Ntcoil