变压器额定电流计算方法,知道三相容量电压计算电流,额定容量KVA/额定电压KV/1.732=额定电流A,举例100KVA变压器,高压10KV,电压0.4KV,高压电流计算=100/10/1.732=5.77(约分到小数点2位),低压电流计算=100/0.4/1.732=144.3(低压小数点后保留一位数),以下列表1为高压10KV,低压0.4KV表格。
三相变压器型号计算高低压电流A | ||||
容量KVA | 高压电压: KV | 高压电流: A | 低压电压:KV | 低压电流: A |
10 | 10 | 0.58 | 0.4 | 14.4 |
20 | 10 | 1.15 | 0.4 | 28.9 |
30 | 10 | 1.73 | 0.4 | 43.3 |
50 | 10 | 2.89 | 0.4 | 72.2 |
63 | 10 | 3.64 | 0.4 | 90.9 |
80 | 10 | 4.62 | 0.4 | 115.5 |
100 | 10 | 5.77 | 0.4 | 144.3 |
125 | 10 | 7.22 | 0.4 | 180.4 |
160 | 10 | 9.24 | 0.4 | 230.9 |
200 | 10 | 11.55 | 0.4 | 288.7 |
250 | 10 | 14.43 | 0.4 | 360.9 |
315 | 10 | 18.19 | 0.4 | 454.7 |
400 | 10 | 23.09 | 0.4 | 577.4 |
500 | 10 | 28.87 | 0.4 | 721.7 |
630 | 10 | 36.37 | 0.4 | 909.4 |
800 | 10 | 46.19 | 0.4 | 1154.7 |
1000 | 10 | 57.74 | 0.4 | 1443.4 |
1250 | 10 | 72.17 | 0.4 | 1804.3 |
1600 | 10 | 92.38 | 0.4 | 2309.5 |
2000 | 10 | 115.47 | 0.4 | 2886.8 |
2500 | 10 | 144.34 | 0.4 | 3608.5 |
表2为高压20KV,低压0.4KV表格。
三相变压器型号计算高低压电流A | ||||
容量KVA | 高压电压: KV | 高压电流: A | 低压电压:KV | 低压电流: A |
10 | 20 | 0.29 | 0.4 | 14.4 |
20 | 20 | 0.58 | 0.4 | 28.9 |
30 | 20 | 0.87 | 0.4 | 43.3 |
50 | 20 | 1.44 | 0.4 | 72.2 |
63 | 20 | 1.82 | 0.4 | 90.9 |
80 | 20 | 2.31 | 0.4 | 115.5 |
100 | 20 | 2.89 | 0.4 | 144.3 |
125 | 20 | 3.61 | 0.4 | 180.4 |
160 | 20 | 4.62 | 0.4 | 230.9 |
200 | 20 | 5.77 | 0.4 | 288.7 |
250 | 20 | 7.22 | 0.4 | 360.9 |
315 | 20 | 9.09 | 0.4 | 454.7 |
400 | 20 | 11.55 | 0.4 | 577.4 |
500 | 20 | 14.43 | 0.4 | 721.7 |
630 | 20 | 18.19 | 0.4 | 909.4 |
800 | 20 | 23.09 | 0.4 | 1154.7 |
1000 | 20 | 28.87 | 0.4 | 1443.4 |
1250 | 20 | 36.09 | 0.4 | 1804.3 |
1600 | 20 | 46.19 | 0.4 | 2309.5 |
2000 | 20 | 57.74 | 0.4 | 2886.8 |
2500 | 20 | 72.17 | 0.4 | 3608.5 |
表3为高压35KV,低压0.4KV表格。
三相变压器型号计算高低压电流A | ||||
容量KVA | 高压电压: KV | 高压电流: A | 低压电压:KV | 低压电流: A |
10 | 35 | 0.16 | 0.4 | 14.4 |
20 | 35 | 0.33 | 0.4 | 28.9 |
30 | 35 | 0.49 | 0.4 | 43.3 |
50 | 35 | 0.82 | 0.4 | 72.2 |
63 | 35 | 1.04 | 0.4 | 90.9 |
80 | 35 | 1.32 | 0.4 | 115.5 |
100 | 35 | 1.65 | 0.4 | 144.3 |
125 | 35 | 2.06 | 0.4 | 180.4 |
160 | 35 | 2.64 | 0.4 | 230.9 |
200 | 35 | 3.30 | 0.4 | 288.7 |
250 | 35 | 4.12 | 0.4 | 360.9 |
315 | 35 | 5.20 | 0.4 | 454.7 |
400 | 35 | 6.60 | 0.4 | 577.4 |
500 | 35 | 8.25 | 0.4 | 721.7 |
630 | 35 | 10.39 | 0.4 | 909.4 |
800 | 35 | 13.20 | 0.4 | 1154.7 |
1000 | 35 | 16.50 | 0.4 | 1443.4 |
1250 | 35 | 20.62 | 0.4 | 1804.3 |
1600 | 35 | 26.39 | 0.4 | 2309.5 |
2000 | 35 | 32.99 | 0.4 | 2886.8 |
2500 | 35 | 41.24 | 0.4 | 3608.5 |
表4为高压6.3KV,低压0.4KV表格。
三相变压器型号计算高低压电流A | ||||
容量KVA | 高压电压: KV | 高压电流: A | 低压电压:KV | 低压电流: A |
10 | 6.3 | 0.92 | 0.4 | 14.4 |
20 | 6.3 | 1.83 | 0.4 | 28.9 |
30 | 6.3 | 2.75 | 0.4 | 43.3 |
50 | 6.3 | 4.58 | 0.4 | 72.2 |
63 | 6.3 | 5.77 | 0.4 | 90.9 |
80 | 6.3 | 7.33 | 0.4 | 115.5 |
100 | 6.3 | 9.16 | 0.4 | 144.3 |
125 | 6.3 | 11.46 | 0.4 | 180.4 |
160 | 6.3 | 14.66 | 0.4 | 230.9 |
200 | 6.3 | 18.33 | 0.4 | 288.7 |
250 | 6.3 | 22.91 | 0.4 | 360.9 |
315 | 6.3 | 28.87 | 0.4 | 454.7 |
400 | 6.3 | 36.66 | 0.4 | 577.4 |
500 | 6.3 | 45.82 | 0.4 | 721.7 |
630 | 6.3 | 57.74 | 0.4 | 909.4 |
800 | 6.3 | 73.32 | 0.4 | 1154.7 |
1000 | 6.3 | 91.65 | 0.4 | 1443.4 |
1250 | 6.3 | 114.56 | 0.4 | 1804.3 |
1600 | 6.3 | 146.63 | 0.4 | 2309.5 |
2000 | 6.3 | 183.29 | 0.4 | 2886.8 |
2500 | 6.3 | 229.11 | 0.4 | 3608.5 |
列了几个表格以此类推可以计算。