CLEARANCES REA TRAINING.pptx - CLEARANCES WORKING CLEARANCES Working clearances should be observed to prevent possible accidents 11 kv 3\u2019 or 0.9 m 33

CLEARANCES REA TRAINING.pptx - CLEARANCES WORKING...

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CLEARANCES
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WORKING CLEARANCES Working clearances should be observed to prevent possible accidents. 11 kv 3’ or 0.9 m 33 kv 4’ or 1.2m 66kv 6’ or 1.8m 132kv 9’0’’ or 2.7m 275 kv 15’ 0r 4.6m >275 kv 18’ or 5.5m
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GROUND CLEARANCES 11KV 8’6’’ or 2.6m 33kv 9’0’’ 0r 2.7m 66 kv 9’9’’ 0r 3.3m 132 kv 11’3’’ or 3.4m >270kv 15’ or 4.6m
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GROUND CLEARANCES Height of 11 kv conductor across Telkom line 1.8m Height of 11 kv conductor above public roads 5.8m Height of 11 kv conductor above private land 5.2m Height of 11 kv conductor above railway line 9.2m
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IGNORANCE OF GROUND CLEARANCE
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ANGLE OF CROSSING Angle of crossing telephone lines Above 60 degrees Angle of crossing railway line 90 degrees
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TRACE MAINTENANCE Recommended minimum clearance in metres
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  • Spring '18
  • Professor Obura Oluoch
  • High Voltage, 4m, 3.3m, 3.4m, Buildings

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