Substation Clearance

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