This order declares that certain diesel-powered AC generators (frequency 45–65 Hz; voltage 210–430 V) fall under Part III, Schedule 4 item 50 of the Customs Tariff Act 1995, altering their tariff treatment. It was made under s.269P of the Customs Act 1901 and takes effect from 18 September 2006 until revoked under ss.269SC/269SD. It matters to importers (who face the changed duty treatment), customs officials (who apply the concession), and domestic suppliers (who may face different competitive conditions).