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ELECTRIC MULTIPLE UNITS DIESEL MULTIPLE UNITS ELECTRIC LOCOMOTIVES DIESEL LOCOMOTIVES TRAMS PASSENGER CARS NCBIR PROJECTS
DRAGON 2

E6ACTa DRAGON 2  is a six-axle locomotive designed to pull heavy freight trains. DRAGON 2 locos use  cutting-edge, most reliable tech­nological solutions and offer high com­fort of the driver’s work. The main advantage of DRAGON 2 is a very high tractive effort which, when combined with a high locomotive weight, a per­formant antiskid system and an individual drive per each axle, allows it to pull heavy freight trains.

DRAGON 2 is the first in Europe six-axle electric locomotive fully compliant with the Technical Specifications for Interoperability (TSI 2014) and it is equipped with Level 2 ECTS System. The locomotive has SiC-based converters, ensuring smooth operation in high temperatures, reduced noise levels, a 50% reduction in energy loss and its machinery size and weight have been reduced by 60%.

Basic features:

  • technical parameters tailored to individual clients’ needs
  • able to pull freight trains of up to 3200 tonnes and passenger trains of up to 800 tonnes
  • asynchronous drive
  • driven by IGBT-based traction inverters
  • microprocessor-based control system
  • on-board diagnostic system with full visual information and a data registration module
  • inte­lligent power management system
  • high technical availability rate
  • adapted for ERTMS and GSM-R installation
  • modular structure
  • highest safety level
  • spacious driver’s cab meeting EN 1527 requirements
  • enhanced working conditions for drivers
  • enhanced driver’s cab amenities
  • environmentally- friendly
  • ergonomic
  • competitively priced

Drive:

  • monoblock wheels with a nominal diameter of 1250 mm
  • braking discs fixed on both sides of the wheel
  • asynchronous traction cage motors with power of 1400 kW each
  • independent cooling of each motor
  • helical gearbox units
  • axle box: conical roller bearings, temperature and speed sensors

Suspension:

  • primary level: two sets of coil springs mounted directly on both sides of the wheelset axle box
  • secondary level: a set of large-scale flexicoil spiral springs
  • hydraulic shock absorbers for muffling vibrations

Locomotive body:

  • integral welded design
  • crumple zones
  • safety cage in driver’s cab
  • anti-climbing system
  • modular structure
  • three roof sections allowing easy access to the machine space
  • ergonomic, two-person driver’s cab
  • dual module air-conditioning
  • four video cameras acting as rear-view mirrors
  • two cameras showing images of draw hooks and screw couplers
  • modern fire detection and fire extinguishing system

High voltage electrical circuits:

  • two or four single-arm pantographs with independent control system and ADD system
  • reliable high-speed circuit-breaker- UR26 Secheron
  • anti-interference filters
  • traction transformer to reduce voltage from the overhead line 15kV/16,7Hz or 25kV/50Hz to the voltage powering the inverter input
  • two blocks of power supply with each containing two AC/AC inverters –three-phase inverters with IGBT transistors and DC/DC converter to vary electro-dynamic braking force
  •  2 x 130 kW static converter with input voltage of 3 x 440 V AC, 60 Hz and 24 V DC
  • individual water cooling system for each of the supply blocks

Low-voltage electrical circuits:

  • 24 V DC obtained from additional battery charger powered with 3x400V. Power supply to: control circuits, high-speed circuit-breaker, control system of measuring converters, battery charging system, equipment of the control panel, pneumatic system controls, internal and external lighting and windscreen wipers
  • top-class 335Ah FNC battery system
  • power outage in the overhead line does not result in switching off external lights for minimum 5 hours. In idle state, the control system switches off unused equipment saving electricity.

Locomotive diagnostics and control:

  • microprocessor-based control system
  • loco controller in distributed structure
  • drive controller
  • two independent panels to display drive parameters and diagnostics in each cab
  • event recorder synchronized with electronic speedometer
  • adapted to GPS installation transmitting diagnostic data

Functions:

  • overall control of locomotive operation
  • setting tractive effort
  • fully automatic drive control with speed set by loco driver
  • Start-up and braking processes controlled by anti-skid system working independently per each wheelset
  • controlling the pneumatic system
  • varying the electro-dynamic braking power
  • full locomotive diagnostics with event recording