Power electronics · since 1992
Railway electronics
Control systems and electronics for rolling stock.
We have been developing solutions for railways and urban transit since 1992 — control systems, traction and auxiliary electronics, and test equipment for rolling-stock test rooms.
Main control system
MORIS control system
- More than 500 units in service — Slovakia, Czech Republic, Lithuania, Belarus, Ukraine and other countries
- Main control system for diesel-electric and electric trains
- Available with a 32-bit CPU
- In service
- more than 500 units
- Countries
- Slovakia, Czech Republic, Lithuania, Belarus, Ukraine
- Vehicles
- diesel-electric and electric
- CPU
- 32-bit version available
Traction · auxiliaries · safety
Components for rolling stock
- DIRNES traction rectifiers
- PM pulse converters
- Generator exciters and static exciters
- Synchronous-generator exciters
- Battery chargers
- DC/DC, DC/AC and AC/DC supplies
- Display units
- Traction-signal transducers
- Insulation-state meters
- Auxiliary-generator exciters
- Auxiliary-network regulators and rectifiers
- Driver vigilance devices
- Signal-light and overspeed monitoring
- Lamp-circuit monitoring modules
- Contactless switch modules
- Commissioning of diesel-electric locomotives
- Display programming and visualisation
Test rooms and depots
Test equipment
- HV supplies for rolling-stock test rooms
- Testers for DC high-speed breakers and protective devices
- Automated battery capacity-test equipment
On the track
Selected milestones and projects
- 2007
Modernised locomotive 729.701 (CZ LOKO) — traction and auxiliary circuits run by an NES electronic controller.
- 2025
A containerised 3 kV DC supply for the ČMŽO vehicle test room in Přerov.
- 2026
Locomotive A219 (PARI CZ) — a bogie-mounted 900 V DC charger and a 24 V DC supply with battery monitoring.
A containerised 3 kV DC supply for rail vehicles
ČMŽO — Elektronika a.s., Přerov, Czech Republic
Full story
Swiss trams running without overhead wire
Čiernohronská železnica (forest railway), Čierny Balog, Slovakia
Full story
Supercapacitor energy-recovery stations
Plzeň public transport operator, Plzeň, Czech Republic
Full storyQuestions and answers
Frequently asked
What is the MORIS control system?
MORIS is the main control system for diesel-electric and electric vehicles developed by NES. More than 500 units are in service in Slovakia, the Czech Republic, Lithuania, Belarus and Ukraine; a version with a 32-bit CPU is also available.
Do you supply test equipment for depots and test rooms?
Yes — HV supplies for rolling-stock test rooms (for example a containerised 3 kV DC supply for ČMŽO in Přerov), testers for DC high-speed breakers and protective devices, and automated battery capacity-test equipment.
More solutions
Power electronics
- Cathodic protection Rectifiers and complete stations with remote supervision and GPS sync.
- Electroplating Switched-mode rectifiers for plating lines, installed and serviced.
- Railway electronics Control systems, traction and auxiliary electronics for vehicles since 1992.
- Test benches & equipment HV supplies for vehicle test rooms and circuit-breaker testers.
- Chargers & dischargers Programmable charging, capacity tests and remote battery monitoring.
- AC/DC power supplies Switched-mode AC/DC supplies, DC/DC converters, inverters and DC UPS.
- Transducers Measuring transducers, isolation amplifiers, insulation meters, relays.
- Contactless power transfer Powering moving and sealed equipment without contacts or cables.
- Custom solutions Science, research and defence, single crystals, plasma, supercapacitors.
Have a project on the table?
Modernising vehicles or a test room?
Send us your brief or call — a sales engineer or technician from the right division will get back to you.