ER200

The ER200 was a Soviet electric train built in Riga, Latvia, by Rīgas Vagonbūves Rūpnīca. 
It was the first high-speed Direct Current intercity Electric Multiple Unit (EMU) train with rheostatic brakes, meaning that it used an electric traction motor as a generator when slowing and dissipated the power generates as heat n the brake grid resistors. 
The first design, begun in 1974, was the ER200-1 EMU, and went into commercial operation in 1984. The second design went into operation between Saint Petersburg and Moscow in 1996.