不同尺寸的铝母线、铜母线电压损失列于表12-55。
表12-55 三相380V矩形母线的电压损失/[%/(A·km)]
母线尺寸/mm (宽×厚) |
电阻 (θ=65℃) /(Ω/km) | 感抗/(Ω/km) | 母线中心间距250mm,竖放或平放 | |||||||
母线中心间距250mm | cos | |||||||||
竖放 | 平放 | 0. 5 | 0. 6 | 0.7 | 0. 8 | 0. 9 | 1.0 | |||
铝 | 25×3 | 0. 457 | 0. 240 | 0. 217 | 0. 199 | 0. 213 | 0. 224 | 0. 232 | 0. 235 | 0. 208 |
30×4 | 0. 286 | 0. 227 | 0. 205 | 0. 155 | 0. 161 | 0. 165 | 0.166 | 0. 162 | 0. 130 | |
40×4 | 0. 215 | 0.212 | 0.188 | 0. 133 | 0. 136 | 0. 138 | 0. 136 | 0. 130 | 0. 098 | |
40×5 | 0. 172 | 0. 210 | 0. 187 | 0. 122 | 0. 124 | 0. 123 | 0.120 | 0. 112 | 0. 078 | |
50×5 | 0. 138 | 0. 199 | 0. 174 | 0. 110 | 0. 110 | 0.109 | 0. 105 | 0. 096 | 0. 063 | |
50×6.3 | 0. 116 | 0. 197 | 0. 173 | 0. 104 | 0. 104 | 0. 101 | 0. 096 | 0. 087 | 0. 053 | |
63×6. 3 | 0. 097 | 0. 188 | 0. 163 | 0. 096 | 0. 095 | 0. 092 | 0. 087 | 0. 077 | 0. 044 | |
80×6. 3 | 0. 074 | 0. 172 | 0. 146 | 0. 085 | 0. 083 | 0. 080 | 0. 074 | 0. 065 | 0. 034 | |
100×6. 3 | 0. 060 | 0. 160 | 0. 132 | 0. 077 | 0. 075 | 0. 071 | 0.066 | 0.057 | 0. 028 | |
63×8 | 0. 074 | 0. 185 | 0. 162 | 0. 090 | 0. 088 | 0. 084 | 0. 078 | 0. 067 | 0. 034 | |
80×8 | 0. 057 | 0. 170 | 0. 145 | 0. 080 | 0. 078 | 0. 074 | 0. 067 | 0. 057 | 0. 026 | |
100×8 | 0. 047 | 0. 158 | 0. 132 | 0. 073 | 0. 070 | 0.066 | 0. 060 | 0. 051 | 0. 021 | |
125×8 | 0. 040 | 0. 149 | 0. 121 | 0. 068 | 0. 065 | 0. 061 | 0. 055 | 0. 046 | 0. 018 | |
63×10 | 0. 060 | 0. 182 | 0. 160 | 0. 086 | 0. 083 | 0. 079 | 0. 072 | 0.061 | 0. 028 | |
80×10 | 0. 047 | 0. 168 | 0. 143 | 0. 077 | 0. 074 | 0. 070 | 0. 063 | 0. 053 | 0. 021 | |
100×10 | 0. 039 | 0. 156 | 0. 131 | 0. 071 | 0. 068 | 0. 063 | 0. 057 | 0. 047 | 0. 018 | |
125×10 | 0. 034 | 0. 147 | 0. 123 | 0. 066 | 0. 063 | 0. 059 | 0. 053 | 0. 043 | 0. 016 |
续表
母线尺寸/mm (宽×厚) |
电阻 (θ=65℃) /(Ω/km) | 感抗/(Ω/km) | 母线中心间距250mm,竖放或平放 | |||||||
母线中心间距250mm | cos | |||||||||
竖放 | 平放 | 0.5 | 0.6 | 0.7 | 0. 8 | 0. 9 | 1. 0 | |||
铜 | 25×3 | 0. 279 | 0. 240 | 0. 217 | 0. 158 | 0. 164 | 0. 167 | 0. 167 | 0. 162 | 0. 127 |
30×4 | 0. 175 | 0. 227 | 0. 205 | 0. 130 | 0. 131 | 0. 130 | 0. 126 | 0. 17 | 0. 080 | |
40×4 | 0. 132 | 0. 212 | 0. 188 | 0. 114 | 0. 113 | 0. 111 | 0. 106 | 0. 096 | 0. 060 | |
40×5 | 0. 107 | 0. 210 | 0. 187 | 0. 107 | 0. 106 | 0. 102 | 0. 096 | 0. 086 | 0. 049 | |
50×5 | 0. 087 | 0. 199 | 0. 174 | 0. 098 | 0. 096 | 0. 092 | 0. 086 | 0. 075 | 0. 039 | |
50×6. 3 | 0. 072 | 0. 197 | 0. 173 | 0. 094 | 0. 092 | 0. 087 | 0. 080 | 0. 069 | 0. 033 | |
63×6. 3 | 0. 062 | 0. 188 | 0. 163 | 0. 088 | 0. 085 | 0. 081 | 0. 074 | 0. 063 | 0. 028 | |
80×6. 3 | 0. 047 | 0. 172 | 0. 146 | 0. 079 | 0. 076 | 0. 071 | 0. 064 | 0. 054 | 0. 022 | |
100×6. 3 | 0. 039 | 0. 160 | 0. 132 | 0. 072 | 0. 069 | 0.065 | 0.058 | 0.048 | 0.018 | |
63×8 | 0. 047 | 0. 185 | 0. 162 | 0. 084 | 0. 080 | 0. 075 | 0.068 | 0. 056 | 0. 022 | |
80×8 | 0. 037 | 0. 170 | 0. 145 | 0. 075 | 0. 072 | 0. 067 | 0. 060 | 0. 049 | 0. 017 | |
100×8 | 0. 031 | 0. 158 | 0. 132 | 0.069 | 0. 066 | 0. 061 | 0. 054 | 0. 044 | 0. 014 | |
125×8 | 0. 027 | 0. 149 | 0. 121 | 0. 065 | 0. 062 | 0. 057 | 0. 051 | 0. 041 | 0. 012 | |
63×10 | 0. 039 | 0. 182 | 0. 160 | 0. 079 | 0. 077 | 0. 072 | 0. 064 | 0. 052 | 0. 018 | |
80×10 | 0.031 | 0. 168 | 0. 143 | 0. 073 | 0. 070 | 0. 065 | 0. 057 | 0. 046 | 0. 014 | |
100×10 | 0. 026 | 0. 156 | 0. 131 | 0. 068 | 0. 064 | 0. 059 | 0. 052 | 0. 042 | 0.012 | |
125×10 | 0. 022 | 0. 147 | 0. 123 | 0. 063 | 0. 060 | 0. 055 | 0. 048 | 0. 038 | 0. 010 |