Elektron is simply the Russian word for electron, and meant to represent Soviet scientific progress. Not exactly a name I’d recommend anyone use for a real child!
Erlena means “the era of Lenin,” derived from the elements era Lenina. The male form was Erlen. As far as these invented names go, Erlena sounds somewhat normal.
http://panzercentral.com/forum/viewtopic.php?f=96&t=36301 (penultimate post)