Economy of Hungary city competitiveness ranking by EIU, Budapest is ranked above Tel Aviv, Lisbon, Moscow and Johannesburg, among others. Hungary maintains its own currency, the Hungarian forint (HUF), although the economy fulfills the Maastricht criteria with the exception of public debt, but the ratio of public debt to GDP is significantly below the EU average at 75.3% in 2015. The Hungarian National Bank—founded in 1924, after the dissolution of Austro-Hungarian Empire—is currently focusing on price stability with an inflation target of 3%. In the age of feudalism the key economic factor was land. The new economic and social orders created private ownership
Ring main unit type of switchgear is used for medium-voltage power distribution, from 7200 volts to about 36000 volts. The ring main unit was introduced in the United Kingdom and is now widely used in other countries. In North American distribution practice, often the equivalent of a ring main unit is built into a pad-mounted transformer which integrates switches and transformer into a single cabinet. Ring main units can be characterized by their type of insulation, air, oil or gas. The switch used to isolate the transformer can be a fusible switch, or may be a circuit breaker using vacuum or gas-insulated interrupters.