What are the different voltage classifications for Overhead Transmission Lines?

2025-07-18

Overhead transmission lines are classified by voltage to manage power delivery efficiently:

  • Low Voltage: Typically 1 kV or less, often for local distribution.

  • Medium Voltage: Ranging from 1 kV to 69 kV, used for sub-transmission and distribution networks.

  • High Voltage (HV): Generally from 69 kV to 345 kV, for primary transmission between major substations.

  • Extra-High Voltage (EHV): From 345 kV to 800 kV, used for long-distance, high-capacity power transmission.

  • Ultra-High Voltage (UHV): Over 800 kV, representing the cutting edge of bulk power transmission. Our tension stringing equipment is designed to handle the demands of all these voltage levels, ensuring safe and efficient conductor installation.

What are the essential components that make up an Overhead Power Transmission Line system?What critical factors are considered during the planning and design phase of an OHTL project?
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