Technical and Organisational Rules for system operators and users (TOR)

The Technical and Organisational Rules for system operators and users (TOR) currently consist of the following parts:

• Part A: General, definitions, sources
  
  
• Part B: Technical rules for networks with a voltage of ≥ 110 kV
  
  
• Part C: Technical rules for networks with a voltage of < 110 kV
  
  
• Part D: Special technical rules:
  
  Introduction
  
  Section D1:
  Electrical equipment related to network disturbances; threshold levels for assessment by system operators and determination of electromagnetic compatibility
  
  Section D2:
  Regulations for the assessment of network disturbances
  
  Section D3:
  Audio frequency ripple control; recommendations on the avoidance of prohibited interference
  
  Section D4:
  Operation of generating stations in parallel with distributon networks
  
  
• Part E Technical precautions against major disturbances and limitation of their effects
  
  
• Part F Technical rules for meter reading data acquisition and transmission