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Electrical equipment for metro trains:

Electrical equipment for the voice announcement system




A set of electrical equipment for a loudspeaker and voice announcement system (ES VAS) based on an RS-485 or Ethernet interface is designed for installation in metro train cars in order to provide:


  • emergency communication between the train driver and passengers in case of emergency;
  • speech reproduction of names of stations of the train route and other service information;
  • speech reproduction of information from the driver for all cars of the train.


The composition of the ES VAS for one metro train of five cars:

  • train driver loudspeaker device;
  • passenger loudspeaker device;
  • voice announcement device;
  • control unit;
  • indication unit;
  • mainline concentrator;
  • voltage transformer (VT);
  • line-cable equipment set.

*The quantitative composition is set in agreement with the customer.


Technical characteristics:

  • input voltage range in DC mains, V: from 18 to 32 or from 55 to 90 (when using VT)


Operating conditions:

  • climatic version: UHL 3.1 according to GOST 15150-69;
  • operating temperature range: -20°С...+50°С (remains functional up to -40°С);
  • mechanical design: group М25 according to GOST 17516.1;