493 of these were built between 1965 and 1994; a stated power output of 2,000 kW (2,680 hp)
"The EU07 is strongly connected with the EU06 locomotive. The EU06 was a Polish derivative of the Class 83 locomotive built for the British system. In 1959 an agreement was signed with the producer of the EU06, English Electric, under which Poland bought the license for the EU06 and started its production in Pafawag Wrocław, under build number 4E. The first item was finished in 1965, and by 1974 a total number of 240 locomotives had been built. The EU07 locomotives differed slightly from EU06 due to some minor improvements that had been made in comparison to their predecessors.
"In 1983 the production of EU07 locomotives was re-opened in Cegielski works in Poznań. This new series of locomotives was based on ET41 freight locomotive (which had been built by joining together two EU07 locomotives of first-run production). Bringing several modifications production number changed to 303E. A total number of 243 locomotives were built and the production continued until 1994 despite relatively outdated construction."
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