def import_static_data(self):
        """ Imports static data into NetworkDing0 such as equipment.

        Returns
        -------
        Dictionary with equipment data
        """

        package_path = ding0.__path__[0]

        static_data = {}

        equipment_mv_parameters_trafos = cfg_ding0.get('equipment',
                                                       'equipment_mv_parameters_trafos')
        static_data['MV_trafos'] = pd.read_csv(os.path.join(package_path, 'data',
                                   equipment_mv_parameters_trafos),
                                   comment='#',
                                   delimiter=',',
                                   decimal='.',
                                   converters={'S_nom': lambda x: int(x)})

        # import equipment
        equipment_mv_parameters_lines = cfg_ding0.get('equipment',
                                                      'equipment_mv_parameters_lines')
        static_data['MV_overhead_lines'] = pd.read_csv(os.path.join(package_path, 'data',
                                           equipment_mv_parameters_lines),
                                           comment='#',
                                           converters={'I_max_th': lambda x: int(x),
                                                       'U_n': lambda x: int(x),
                                                       'reinforce_only': lambda x: int(x)})

        equipment_mv_parameters_cables = cfg_ding0.get('equipment',
                                                       'equipment_mv_parameters_cables')
        static_data['MV_cables'] = pd.read_csv(os.path.join(package_path, 'data',
                                   equipment_mv_parameters_cables),
                                   comment='#',
                                   converters={'I_max_th': lambda x: int(x),
                                               'U_n': lambda x: int(x),
                                               'reinforce_only': lambda x: int(x)})

        equipment_lv_parameters_cables = cfg_ding0.get('equipment',
                                                       'equipment_lv_parameters_cables')
        static_data['LV_cables'] = pd.read_csv(os.path.join(package_path, 'data',
                                   equipment_lv_parameters_cables),
                                   comment='#',
                                   index_col='name',
                                   converters={'I_max_th': lambda x: int(x), 'U_n': lambda x: int(x)})

        equipment_lv_parameters_trafos = cfg_ding0.get('equipment',
                                                       'equipment_lv_parameters_trafos')
        static_data['LV_trafos'] = pd.read_csv(os.path.join(package_path, 'data',
                                   equipment_lv_parameters_trafos),
                                   comment='#',
                                   delimiter=',',
                                   decimal='.',
                                   converters={'S_nom': lambda x: int(x)})

        # import LV model grids
        model_grids_lv_string_properties = cfg_ding0.get('model_grids',
                                                         'model_grids_lv_string_properties')
        static_data['LV_model_grids_strings'] = pd.read_csv(os.path.join(package_path, 'data',
                                                model_grids_lv_string_properties),
                                                comment='#',
                                                delimiter=';',
                                                decimal=',',
                                                index_col='string_id',
                                                converters={'string_id': lambda x: int(x),
                                                            'type': lambda x: int(x),
                                                            'Kerber Original': lambda x: int(x),
                                                            'count house branch': lambda x: int(x),
                                                            'distance house branch': lambda x: int(x),
                                                            'cable width': lambda x: int(x),
                                                            'string length': lambda x: int(x),
                                                            'length house branch A': lambda x: int(x),
                                                            'length house branch B': lambda x: int(x),
                                                            'cable width A': lambda x: int(x),
                                                            'cable width B': lambda x: int(x)})

        model_grids_lv_apartment_string = cfg_ding0.get('model_grids',
                                                        'model_grids_lv_apartment_string')
        converters_ids = {}
        for id in range(1,47):  # create int() converter for columns 1..46
            converters_ids[str(id)] = lambda x: int(x)
        static_data['LV_model_grids_strings_per_grid'] = pd.read_csv(os.path.join(package_path, 'data',
                                                         model_grids_lv_apartment_string),
                                                         comment='#',
                                                         delimiter=';',
                                                         decimal=',',
                                                         index_col='apartment_count',
                                                         converters=dict({'apartment_count': lambda x: int(x)},
                                                                         **converters_ids))

        return static_data