Raiting Factor for groups in ground

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Table 5
Cable Type Method of laying: OOO Side by side, distance
between cables: 7cm
Load  Factor 0.7 1.0
XLPE Insulated Terminal Resistivity ofthesoil K.m/W 0.7 1.0 1.5 2.5 0.7-2.5
Number of system 1 0.99 1.00 1.01 1.03 0.85
Cables 0.6/1 kV-20.3/35kV 2
3
0.86
0.77
0.87
0.77
0.88
0.78
0.88
0.79
0.71
0.62
4 0.73 0.73 0.74 0.74 0.58
5 0.69 0.70 0.70 0.71 0.55
6 0.67 0.68 0.68 0.69 0.5
8 0.64 0.65 0.65 0.65 0.52
PVC Insulated 10 0.62 0.63 0.63 0.63 0.49
Number of system 1 0.98 1.00 1.01 1.02 0.85
Cables 0.6/1 kV-3.5/6kV 2
3
4
0.86
0.77
0.73
0.87
0.78
0.74
0.88
0.79
0.74
0.89
0.79
0.75
0.71
0.62
0.58
5 0.70 0.70 0.70 0.71 0.55
6 0.68 0.68 0.68 0.69 0.53
8 0.65 0.65 0.65 0.66 0.51
10 0.63 0.63 0.63 0.64 0.49
Table 6
Cable Type Method of laying: o°e Side by side, distance between cables: 7-25 cm
Load   Factor
XLPE Insulated Terminal Resistivity
of thesoil K.m/W
0.7 1.0 1.5 2.5 0.7-2.5
Distance between
systems (cm)
7 25 7 25 7 25 7 25 7 25
Number of system 1 0.99 0.99 1.00 1.00 1.01 1.01 1.03 1.03 0.87 0.87
Cables 0.6/1 kV
20.3/35kV
2
3
0.84 0.74 0.89
0.81
0.85
0.75
0.89
0.82
0.86
0.76
0.90
0.82
0.87
0.76
0.91
0.83
0.71
0.61
0.75 0.67
4 0.69 0.78 0.70 0.78 0.70 0.79 0.71 0.79 0.56 0.64
5 0.65 0.74 0.66 0.75 0.66 0.75 0.67 0.76 0.5 0.60
6 0.62 0.72 0.63 0.73 0.63 0.73 0.64 0.74 0.50 0.59
8 0.58 0.70 0.59 0.70 0.59 0.70 0.59 0.71 0.46 0.56
PVC Insulated
Cables
0.6/1 kV-3 5/6kV
10 0.56 0.68 0.56 0.68 0.56 0.68 0.57 0.69 0.44 0.54
Number of system 1 0.99 0.99 1.00 1.00 1.01 1.01 1.01 1.01 0.87 0.87
  2 0.84 0.89 0.85 0.90 0.86 0.91 0.87 0.92 0.71 0.75
  3 0.74 0.82 0.75 0.82 0.76 0.83 0.77 0.84 0.61 0.67
4 0.69 0.78 0.70 0.79 0.71 0.79 0.71 0.80 0.56 0.64
5 0.65 0.75 0.66 0.76 0.66 0.76 0.67 0.77 0.52 0.60
6 0.62 0.73 0.63 0.74 0.64 0.74 0.64 0.75 0.50 0.59
8 0.58 0.70 0.59 0.71 0.59 0.71 0.60 0.72 0.46 0.56
10 0.55 0.69 0.56 0.69 0.56 0.69 0.57 0.70 0.44 0.54
 

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