LV- HV-VHV Switchboards

Production of LV switchboards acc. to EN 60439-1ed. 2

Production of type cubical switchboards marked as follows:

  • RH  – for power supply of electric circuits incl. compensation
  • RO  – for control, signalling and regulation electric circuits
  • RX  – for transition and terminal electric circuits

Production of steel plate OCEP switchboards marked as follows:

  • RHO – for power supply of electric circuits incl. compensation
  • ROO – generally for control, signalling and regulation electric circuits
  • RXO – for transition and terminal electric circuits

Production of switchboards in plastic boxes marked as follows:

  • MH – for power supply of power electric circuits
  • MO – generally for control, signalling and regulation electric circuits
  • MX-O – generally for transition and terminal electric circuits

Production of HV switchboards acc. to ČSN EN 50123 (up to 3 kV DC), ČSN EN 62271-200 (up to 52 kV AC)

  • Production of cubicle HV switchboards under a type marking EZB-3 kV DC determined for the distribution of direct current at traction power supply and switching stations of 2 – 3 kV DC/IT system and for the protection of OCL on railway
  • Production of cubicle HV switchboards under a type marking EZB-M determined for the distribution of direct current at traction power supply and switching stations of 750 V DC/IT system and for the protection of OCL within public transport
  • Production of HV converters under a type marking EZB-U, controlled and uncontrolled converters for traction power supply stations (750 V, 1500 V, 3000 V).
  • Production of cubicle HV switchboards under a type marking EZB-AC determined for the distribution of alternating current at traction power supply and switching stations of 1PEN 50 Hz 27 kV/TN-C,  1PEN 16 2/3 Hz 17,5 kV/TN-C system and for the protection of OCL on railway
  • Production of HV rail block transformer stations under a type marking TS7 –Azi  determined for the distribution of 6-22 kV AC, IT with frequency 50/75 Hz for power supply of signalling system on railway
  • Production of cubicle HV switchboards under a type marking EPZ-3 kV AC 50 Hz, EPZ-3 kV DC determined for pre-heating of railway carriages for passengers
  • Production of HV switchboards in plastic boxes type G I-II/I-IV determined for the termination of return cables of all traction systems
  • Production of  atypical LV and HV switchboards for special purposes, retrofitting of HV switchboards 6 kV to 35 kV, special constructions for electric devices,  cubical-type  switch-rooms
  • Production of container and mobile traction power supply stations for standard traction systems
  • Production of equipment for swtiches (points) heating

Completion of LV units for HV switchboards filled by SF6 gas

Production of atypical LV and HV switchboards for special purposes special constructions for electric devices

VHV switchboards

We offer installations of VHV technologies, incl. the production of LV control panels for VHV systems,  completion of LV units for HV switchboards filled by SF6 gas etc.

Contact persons

Václav Boček – vaclav.bocek@elzel.cz
Richard Lužný – richard.luzny@elzel.cz
Jiří Svoboda – jiri.svoboda@elzel.cz