Old Marklin "Blue" Transformer Question

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StuartA		#1 Posted : 29 June 2014 07:03:15(UTC) Retweet
Joined: 22/01/2011(UTC) Posts: 121 Location: Long Island, NY		I know from reading these forums that you should never use the blue transformers with digital locomotives. However, I met someone who was not aware of this, and has run some of his digital locomotives with his old blue transformer. He doesn't believe me (or maybe doesn't understand me) when I try to explain this to him. Is there any formal documentation from Marklin explaining that you should never use the blue transformers with digital locomotives? Thanks! Stuart


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H0		#2 Posted : 29 June 2014 08:13:34(UTC) Retweet
Joined: 16/02/2004(UTC) Posts: 15,266 Location: DE-NW		Hi! Originally Posted by: StuartA Is there any formal documentation from Marklin explaining that you should never use the blue transformers with digital locomotives? Don't expect too much, especially not in English or other languages. Every modern loco comes with a warning in the manual: "Use only switched mode power supply units and transformers that are designed for your local power system." (or something to that effect) Nominal voltage is 120 V in the USA and 230 V in most European countries, so equipment for 110 V or 220 V is ruled out. For a while they used an English translation that is funny, but difficult to understand: "Under no circumstances should transformers rated for an input of 220 volts be connected to the American 110 volt household current system." This also is meant to say: don't use it if it is rated for 110 V or 220 V. Technik-Tipp 201 warns about over-voltages coming from older transformers and also warns about brittle isolation - but in German only: http://www.maerklin.de/m...faq/Technik-Tipp-201.pdf With a volt meter you can check the reversing voltage that comes out of the transformer. With modern transformers it's around 25 V. More than 28 V will exceed the specification of modern transformers. See also: http://blog.mailez.de/eblog/?p=52
		Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS

4 users liked this useful post by H0		Shamu, biedmatt, MikeR, hennabm
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