Technical Standards

Overview of Selected Technical Standards for Distribution Design

In the published List of Czech Technical Standards, ČSN for electrical equipment are classified into classes 33 to 38 and these are further divided into groups:

  • 33 ELECTRICAL ENGINEERING – ELECTROTECHNICAL REGULATIONS
  • 34 ELECTRICAL ENGINEERING
  • 35 ELECTRICAL ENGINEERING
  • 36 ELECTRICAL ENGINEERING
  • 37 ELECTRICAL ENGINEERING – POWER ENGINEERING
  • 38 ELECTRICAL ENGINEERING – FIRE SAFETY

Note: “The Czech technical standard is not generally binding”. It follows that the ČSNs are not considered legal regulations and there is no general obligation to comply with them. This does not mean that such an obligation cannot result from another legal act.


Harmonised and Specified Standards

Selected harmonised and specified standards for the design of wiring (“built-in products”):

Designation Name
ČSN 03 8370:1963 Reduction of Stray Current Corrosive Effect on Underground Installations
ČSN 33 0165 ed. 2 Electrotechnical Regulations. Identification of Conductors by Colour or Alphanumeric
ČSN EN 61082-1 ed. 2 Preparation of Documents Used in Electrotechnology
ČSN EN 61082 ed. 3
ČSN 73 6005 Spatial Arrangement of Technical Equipment Networks
ČSN P 73 7505 Utility Tunnels and Other Associated Paths of Engineering Networks
ČSN 33 0360 ed. 2 Electrotechnical Regulations. Connection Points for Protective Conductors on Electrical Objects
ČSN EN 61140 ed. 2 Protection against Electric Shock – Common Aspects for Installation and Equipment
ČSN 33 2000-1 ed. 2 Low-Voltage Electrical Installations – Part 1: Basic Aspects, Determination of Essential Characteristics, Definitions
ČSN 33 2000-4-41 ed. 2 Low-Voltage Electrical Installations – Part 4-41: Protective Measures for ensuring Safety – Protection Against Electric Shocks
ČSN 33 2000-4-473 Electrotechnical Regulations. Electrical Equipment and Installations. Part 4: Safety. Chapter 47: Application of Protective Measures for Safety. Section 473: Measures of Protection against Overcurrent
ČSN 33 2000-5-54 ed. 3 Low-Voltage Electrical Installations – Part 5-54: Selection and Erection of Electrical Equipment – Earthing Arrangements and Protective Conductors
ČSN 33 2000-7-701 ed. 2 Low-Voltage Electrical Installations – Part 7-701: Requirements for Special Installations or Locations – Locations Containing a Bath or Shower
ČSN 33 2130 ed. 3 Electrotechnical Regulations. Internal Electric Distribution Lines
ČSN 33 3270 Electrotechnical Regulations. Communication and Security Device in Power Plants and Distribution of Electrical Energy and Heat
ČSN 33 4000 Electrotechnical Regulations. Requirements for Communication Equipment Resistibility against Overvoltage and Overcurrent
ČSN 33 4010 Electrotechnical Regulations. Communication Line and Equipment Protection against Atmospheric Overvoltage and Overcurrent
ČSN 33 2160 Electrotechnical Regulations. Rules for the Protection of Communication Lines and Equipment against Dangerous Influences of Three-Phase High-Voltage, Very High-Voltage and Ultra High-Voltage Lines
ČSN 34 2040 ed. 2 ČSN Electric Engineering Regulations. Regulations for the Protection of Communication and Security Lines and Equipment against Dangerous and Disturbing Effects of Electric Traction 25 kV, 50 Hz
ČSN 34 2100 ČSN Electric Engineering Regulations. Rules for Overhead Communication Lines
ČSN 34 2300 ed. 2 Regulations for Internal Distribution Networks of Communication Lines
ČSN 33 0165 ed. 2 Identification of Conductors by Colour or Alphanumeric
ČSN 33 2000-7-718 Low-Voltage Electrical Installations – Requirements for Special Installations or Locations – Communal Facilities and Workplaces
ČSN 33 2000-5-54 Low-Voltage Electrical Installations – Part 5-54: Selection and Erection of Electrical Equipment – Earthing Arrangements and Protective Conductors