Purpose

 

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;