Page 1 of 10 - Welcome to GUVNL Office/Bharuch Trans Circle... · Page 8 of 10 Earthmat Layout of...
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Page 1 of 10
Transcript of Page 1 of 10 - Welcome to GUVNL Office/Bharuch Trans Circle... · Page 8 of 10 Earthmat Layout of...
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Page 4 of 10 TYPICAL LAP WELDING STANDARD DEISGN
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66 KV ANKLESHWAR A SUB STATION
90 Mtr
D D
75 Mtr
Soil Resistivity: 25.53
Fault Current : 2.59 kA Design Ref : Circular No 36 Sr No 3 of Annexure I
Size of mesh: 110X75 Mtr
Conductor for mesh : 50 X 6 mm GI strip 20 mm dia MS Bar ( as consideration in point No 8 of Annx 1 of circulr 36)
Horizontal Conductor: 10 Nos Vertical Conductor : 9 Nos
Distance Between Conductor : 10 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 34 Nos (To be suppied by contractor)
Total length of 20 mm Dia round bar : Horizontal conductor 9 X 75 675
10 X 75 750
( 5 % extra)
Total 1425 71.25 1496.25
say 1500 Mtr
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Earthmat Layout of 66 kv Ankleshwar Urban Sub-station
86 Mtr
D D
90 Mtr
Soil Resistivity: 9.1018
Fault Current : 1.09 kA
Size of mesh: 86 X 90Mtr
Conductor for mesh :50X6 mm GI Flat/ 20 mm dia MS Bar Horizontal Conductor: 10 Nos
Vertical Conductor : 10 Nos
Distance Between Conductor : 10 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 36 Nos ( To be supplied by contractor) Total length of 20 mm Dia round bar : 10 X86 860
10 X90 900
( 5 % Extra)
Total 1760 88 1848
say 1900 Mtr
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Earthmat Layout of 66 kv Panoli Sub-station
60 Mtr
10 Mtr
D D
88 Mtr
Soil Resistivity: 34.77199 ohm mtr
Fault Current : 3.60 kA
Design Ref : Circular No 36 Sr No 3 of Annexure I
Size of mesh: 88 X 60 Mtr
Conductor for mesh : 20 mm dia MS Bar
Horizontal Conductor: 5+5=10 Nos
Vertical Conductor : 7 +1=8 Nos
Distance Between Conductor ( D): 10 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 32 Nos
Total length of 20 mm Dia round bar : 5X70 350
5X60 300
7X88 616
1X40 40
( 5% extra)
Total 1306 65.3 1371.3
Say 1400 Mtr
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Earthmat Layout of 66 kv Hansot Sub-station
70 Mtr
D D
75 Mtr 75 Mtr
Soil Resistivity: 32.21907 ohm mtr
Fault Current :1.48 kA
Design Ref : Circular No 36 Sr No 3 of Annexure I
Size of mesh: 70 X75 Mtr
Conductor for mesh : 20 mm dia MS Bar
Horizontal Conductor:9 Nos
Vertical Conductor : 8 Nos Distance Between Conductor ( D): 10 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 30 Nos
Total length of 20 mm Dia round bar : 9X70 630
8X75 600
( 5% extra)
Total 1230 61.5 1291.5
Say
1300 Mtr
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Earth mat Lay out of 66 kV Dahej Sub Station
51.6 mtr
1 2 3 4 5 6 7 8 9 10
2
3
D D
4
5
6 62.0 Mtr
7
8
9
10
11
12
13
Soil Resistivity: 25.53963 ohm mtr
Fault Current : 3.60 kA
Design Ref : Circular No 36 Sr No 4 of Annexure I
Size of mesh: 51.6 X 62 Mtr
Conductor for mesh : 20 mm dia MS Bar
Horizontal Conductor:14 Nos
Vertical Conductor : 11 Nos
Distance Between Conductor ( D): 5 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 46 Nos
Total length of 20 mm Dia round bar : 14X51.6 722.4
11X62 682
5% Extra
Total 1404.4 70.22 1474.62
Say 1500 Mtr
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Earthmat Layout of 66 kv Ankleshwar B Sub-station
89 Mtr
D D
110 Mtr
Soil Resistivity :5.7562 ohm mtr
Fault Current: 3.72 kA
Design Ref : Circular No 36 Sr No 3 of Annexure I Size of mesh: 110 X 89 Mtr
Conductor for mesh : 50X6 mm GI flat/20 mm dia MS Bar
Horizontal Conductor: 12 Nos
Vertical Conductor : 10 Nos Distance Between Conductor : 10 Mtr ( To be revised as per size condition)
Nos of 3 mtr long MS bar spikes : 40 Nos Total length of 20 mm Dia round bar : 12 X89 1068
10X110 1100
5% extra
Total 2168 108.4
2276.4
Say 2300 mtr
