Modular traction substation.  Equipment

The following equipment is provided for installation in modular traction substation to maintaining power supply of city electric transport and rolling stock:

• NEX Medium voltage switchgear; 
• Traction and auxiliaries transformers; 
• Rectifier; 
• DC switchgear; 
• Negative busbar switchgear;
• Auxiliaries cabinet; 
• Modular traction substation control cabinet; 
• Protection relays blocks; 
• Lighting system; 
• Ventilation and air conditioning systems; 
• Heating system; 
• Fire extinguishing system and intruder alarm. 

 

Lighting system 

Modular traction substation is equipped with a main and emergency lights system. Lighting is provided inside and outside modular traction substation. 

Ventilation, air conditioning, heating systems 

Modular traction substation is equipped with supply and exhaust ventilation, controlled by microclimate monitoring unit. Shutters for natural ventilation are installed. The shutters can be closed with electric drive. There is also a possibility of manual control. The shutters can be additionally closed with special louvers in cold season. Ventilation grids in operating position are dirt and insect resistant.

Air-conditioning system prevents moisture condensation during equipment cooling and hating cycles. Outdoor air conditioner unit is installed outside on the narrow side of modular traction substation. Indoor unit is installed on the  ceiling of switchgear compartment. Combined operation of ventilation and air conditioning systems provides a constant temperature inside the module at wide range of external premature fluctuations. In winter the specified air temperature range inside substation is provided by electric heating system. 

Intruder alarm and fire extinguishing system

Modular traction substation is equipped with fire alarm system. Fire-suppression system is located inside the module. Doors and gates are equipped with an emergence release locks. Unauthorized intrusion inside the modular traction substation is prevented by utilisation of pamper-proof door hinges, heavy duty locks, reinforced structural elements of the shell and alarm system. Doors and gates are equipped with lugs for padlocks and seals. 

Additional equipment 

Power outlets are provided for power tools during assembly and maintenance works. Modular traction substation is equipped with personal protective equipment storage and metering tools.