Substation Clearance

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SUBSTATION GROUND CLEARANCES
Nominal System Voltage
    Clearance in meters  (Minimum)
11KV
       2.75m
33KV
       3.7 m
66KV
       4.0 m
132KV
       4.6m
220KV
       5.5m
440KV
       8.1m






Minimum Clearances (meters)
33KV
132kv
220kv
400kv
765kv

Phase –Phase  (meters)

0.320


 1.3

  2.1

 4.2

  9.4

Phase-Earth    (meters)

0.320

 1.3

 2.1

 3.5

  6.4

Sectional clearance  (meters)

 3.0

 3.8

 5.0

 6.5

  10.3






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