変圧器容量は、大は小を兼ねることになりません
変電所のトランス容量が大きいと2重の経費過多というRISKを負います。通常、最大負荷率は80%以上が適正です。
負荷率が100%を越えていても、トランスの温度管理上、夏場のピーク時に90度を超過しなければ問題ありません。
トランス容量が大きいと、電気保安管理費過大による損失A、変電所の銅損・鉄損によるエネルギー損失Bがあります。それぞれの金額は月額の一例です。
複数のトランスが入っている事業所は、低負荷トランスの停止、入替等の対応策が必要です。
設備の見直しを省エネルギー・エコ対応の観点からもお奨めいたします。表の最大電力の所から自社の状況判断をしてみて下さい。
凡そ8割の事業所で何らかの対処が必要かと思います。
トランス容量 最大電力 負荷率 平均月 最少月 最大月 平均月 適正容量 電気保安管理費 トランス適正化後の 削減合計
電灯kVa 動力kVa (契約KW) 最大電力/トランス容量 使用量kWh 使用量kWh 使用量kWh 電気料金¥ 電灯kVa 動力kVa 現状容量¥ 適正化後¥ A削減額¥ B削減額¥ (A+B)¥
2,100 2,300 1,950 44% 542,455 451,656 668,376 8,210,562 1,500 1,750 85,050 63,000 22,050 140,760 162,810
550 869 744 52% 221,458 191,376 252,432 3,317,422 450 600 41,055 41,055 0 45,166 45,166
300 300 560 93% 117,158 78,072 211,272 2,058,739 150 300 28,980 25,620 3,360 18,360 21,720
600 1,100 550 32% 129,946 92,448 145,017 2,294,271 500 600 68,250 51,450 16,800 73,440 90,240
75 750 435 53% 141,036 119,922 187,614 2,264,603 75 500 38,325 32,760 5,565 30,600 36,165
300 575 337 39% 105,080 92,718 117,132 1,705,221 300 300 41,055 32,760 8,295 33,660 41,955
100 1,000 323 29% 78,459 55,818 87,558 1,372,595 50 500 51,450 32,760 18,690 67,320 86,010
300 600 302 34% 71,801 44,322 130,734 1,265,042 200 300 41,055 29,820 11,235 48,960 60,195
155 450 260 43% 51,501 42,282 65,022 772,290 155 250 32,760 27,090 5,670 24,480 30,150
400 500 247 27% 61,887 51,846 71,136 1,071,851 200 300 41,055 32,760 8,295 48,960 57,255
250 300 234 43% 54,008 40,962 71,958 961,073 130 130 32,760 21,420 11,340 35,496 46,836
175 250 221 52% 43,775 30,413 78,068 816,935 175 150 10,800 8,800 2,000 12,240 14,240
80 250 210 64% 41,241 27,566 55,158 741,245 80 175 22,470 19,215 3,255 9,180 12,435
80 250 210 64% 41,241 27,566 55,158 741,245 80 175 22,470 19,215 3,255 9,180 12,435
175 150 202 62% 37,107 29,954 48,495 717,719 150 100 27,090 21,420 5,670 9,180 14,850
100 1,810 194 10% 43,252 33,816 48,648 646,576 100 250 68,250 25,620 42,630 190,944 233,574
150 200 192 55% 37,321 27,004 44,450 707,510 150 75 28,308 21,693 6,615 15,300 21,915
200 375 186 32% 46,569 27,960 67,977 796,637 200 75 35,248 22,858 12,390 36,720 49,110
100 200 166 55% 33,403 21,984 46,747 611,877 100 100 23,310 19,530 3,780 12,240 16,020
130 150 166 59% 36,130 31,253 41,625 610,542 100 100 23,310 19,530 3,780 9,792 13,572
250 200 155 34% 47,439 37,314 55,704 829,735 100 100 28,849 21,509 7,340 30,600 37,940
50 250 152 51% 24,079 17,552 27,842 418,720 50 100 19,341 14,556 4,785 18,360 23,145
150 150 141 47% 31,832 26,870 38,609 529,954 75 75 23,310 17,850 5,460 18,360 23,820
150 150 141 47% 31,832 26,870 38,609 529,954 75 75 23,310 17,850 5,460 18,360 23,820
100 500 131 22% 40,716 29,184 49,824 554,527 100 200 32,760 23,310 9,450 36,720 46,170
75 200 127 46% 24,567 16,513 32,890 440,305 75 100 21,122 19,530 1,592 12,240 13,832
50 100 124 83% 16,697 12,456 23,177 369,045 50 100 17,850 17,850 0 0 0
100 100 121 61% 40,187 29,534 48,442 614,993 100 50 19,530 15,540 3,990 6,120 10,110
150 150 120 40% 26,022 17,475 34,565 472,803 100 50 9,000 9,000 0 18,360 18,360
75 150 115 51% 22,923 16,249 33,563 405,653 75 100 18,981 15,540 3,441 6,120 9,561
75 150 113 50% 24,589 19,209 30,705 437,365 75 50 9,350 6,800 2,550 12,240 14,790
100 150 111 44% 30,964 25,454 35,054 485,532 50 75 23,344 17,635 5,709 15,300 21,009
100 100 111 56% 24,521 17,894 30,059 416,128 100 50 17,911 17,911 0 6,120 6,120
50 100 109 73% 20,257 12,990 26,220 400,159 50 50 18,102 15,247 2,855 6,120 8,975
50 100 109 73% 20,257 12,990 26,220 400,159 50 50 18,102 15,247 2,855 6,120 8,975
50 150 104 52% 20,260 15,742 24,463 383,109 50 100 19,530 17,850 1,680 6,120 7,800
75 100 104 59% 19,451 13,401 26,418 353,720 75 50 16,840 14,700 2,140 6,120 8,260
100 100 100 50% 20,214 15,650 23,707 358,321 50 100 19,530 17,850 1,680 6,120 7,800
50 75 99 79% 17,119 12,174 23,706 322,377 50 75 14,700 14,700 0 0 0
130 150 98 35% 35,079 25,735 44,674 523,574 100 30 23,310 15,540 7,770 18,360 26,130
50 105 98 63% 16,338 13,809 19,593 270,158 50 105 15,540 15,540 0 0 0
75 150 90 40% 20,410 16,497 24,283 338,956 75 75 21,420 17,850 3,570 9,180 12,750
30 100 88 68% 17,487 11,004 22,806 331,871 30 100 15,087 15,087 0 0 0
75 150 85 38% 15,118 9,707 22,079 294,988 75 30 6,100 6,100 0 14,688 14,688
50 75 84 67% 16,966 8,708 25,767 301,864 30 40 14,595 6,000 8,595 6,732 15,327
50 75 83 66% 16,517 12,363 20,580 292,493 50 20 14,700 6,100 8,600 6,732 15,332
300 150 80 18% 16,596 12,690 20,664 286,994 100 50 29,820 15,540 14,280 36,720 51,000
40 60 79 79% 13,883 9,309 19,549 259,533 40 60 13,629 13,629 0 0 0
75 100 76 43% 22,191 19,816 25,823 357,231 75 30 8,000 8,000 0 8,568 8,568
50 75 74 59% 14,741 9,133 19,468 263,582 30 40 14,595 6,000 8,595 6,732 15,327
200 75 74 27% 18,387 17,061 20,488 315,246 50 100 21,735 14,805 6,930 15,300 22,230
50 75 74 59% 16,845 13,524 20,724 280,446 50 75 15,540 15,540 0 0 0
75 50 74 59% 14,149 10,241 19,774 254,855 75 50 14,700 14,700 0 0 0
50 100 73 49% 22,576 17,806 26,460 367,190 50 50 17,850 15,540 2,310 6,120 8,430
30 50 73 91% 15,002 8,516 19,644 262,129 30 50 12,630 12,630 0 0 0
32 23 72 131% 12,619 7,750 16,841 237,017 32 23 6,000 6,000 0 0 0
75 100 71 41% 16,163 12,917 18,974 288,972 75 30 17,850 13,440 4,410 8,568 12,978
75 20 71 75% 11,957 4,900 17,741 227,912 75 20 13,379 13,379 0 0 0
30 75 70 67% 10,763 6,322 15,456 226,523 30 75 15,087 15,087 0 0 0
23 32 70 127% 11,883 8,110 16,579 226,256 23 32 6,000 6,000 0 0 0
75 100 70 40% 15,849 12,398 21,068 266,377 75 30 16,840 13,440 3,400 8,568 11,968
50 100 69 46% 14,569 9,573 20,116 267,981 50 30 8,000 8,000 0 8,568 8,568
75 100 69 39% 14,972 11,062 18,912 272,178 75 30 17,850 13,440 4,410 8,568 12,978
100 100 68 34% 11,363 8,438 15,578 228,334 50 50 19,530 15,540 3,990 12,240 16,230
50 100 68 45% 10,251 5,829 15,382 204,554 30 40 17,084 6,000 11,084 9,792 20,876
50 75 68 54% 15,671 11,561 19,529 261,588 30 40 14,700 6,000 8,700 6,732 15,432
28 13 67 163% 11,947 8,803 15,089 222,148 28 13 6,000 6,000 0 0 0
20 30 66 132% 9,431 5,496 13,886 202,637 20 30 12,000 6,000 6,000 0 6,000
20 30 66 132% 9,431 5,496 13,886 202,637 20 30 12,000 6,000 6,000 0 6,000
20 30 66 132% 9,431 5,496 13,886 202,637 20 30 12,000 6,000 6,000 0 6,000
50 50 66 66% 11,044 6,446 15,185 211,046 50 50 14,595 14,595 0 0 0
75 100 66 38% 14,971 10,576 19,061 251,440 30 40 16,840 6,000 10,840 12,852 23,692
75 50 66 53% 13,335 8,353 19,543 234,648 30 40 14,700 6,000 8,700 6,732 15,432
40 20 65 108% 14,983 12,300 17,280 279,245 40 20 6,000 6,000 0 0 0
75 100 64 37% 11,748 7,271 16,740 212,577 75 30 17,850 13,440 4,410 8,568 12,978
40 30 63 90% 12,625 6,913 17,049 222,916 40 30 12,131 12,131 0 0 0
75 75 63 42% 13,141 10,582 16,967 228,212 30 40 15,770 6,000 9,770 9,792 19,562
50 100 60 40% 13,977 9,984 18,667 230,920 50 15 17,850 6,000 11,850 10,404 22,254
50 50 59 59% 13,506 10,408 17,347 239,800 30 50 8,000 8,000 0 2,448 2,448
30 50 59 74% 11,184 7,383 15,326 214,327 10 50 10,678 5,800 4,878 2,448 7,326
50 75 59 47% 13,782 11,011 15,859 225,954 50 15 15,540 6,000 9,540 7,344 16,884
50 100 56 37% 14,764 11,848 17,462 230,178 50 30 17,850 13,440 4,410 8,568 12,978
30 25 55 100% 2,940 2,040 2,662 81,046 30 17 6,000 6,000 0 979 979
25 40 55 85% 8,929 5,861 13,814 181,604 25 40 6,000 6,000 0 0 0
15 20 55 157% 9,002 6,454 13,246 182,462 15 20 6,000 6,000 0 0 0
50 75 55 44% 12,510 9,917 14,422 207,492 50 15 15,540 6,000 9,540 7,344 16,884
50 75 54 43% 8,861 6,000 11,118 181,810 30 40 13,398 6,000 7,398 6,732 14,130
50 75 54 43% 8,861 6,000 11,118 181,810 30 40 13,398 6,000 7,398 6,732 14,130
50 75 54 43% 9,692 7,246 13,842 188,863 30 40 15,330 6,000 9,330 6,732 16,062
60 30 52 58% 20,715 14,537 25,171 299,418 30 30 13,440 6,000 7,440 3,672 11,112
50 75 52 42% 4,846 3,187 7,652 128,123 30 40 15,330 6,000 9,330 6,732 16,062
50 0 52 104% 10,731 6,972 15,054 187,179 50 0 6,000 6,000 0 0 0
50 100 50 33% 7,750 4,981 9,861 161,616 50 30 8,000 8,000 0 8,568 8,568
30 20 49 98% 8,884 5,906 12,612 163,778 30 20 6,000 6,000 0 0 0
50 30 47 59% 9,824 6,571 12,466 180,994 50 10 13,440 6,000 7,440 2,448 9,888
50 50 46 46% 15,838 12,014 19,423 239,106 20 40 15,540 6,000 9,540 4,896 14,436
50 50 46 46% 15,838 12,014 19,423 239,106 20 40 15,540 6,000 9,540 4,896 14,436
75 100 45 26% 9,247 5,978 13,005 170,073 75 30 5,600 5,600 0 8,568 8,568
50 75 44 35% 11,889 9,530 14,786 198,136 50 10 14,700 6,000 8,700 7,956 16,656
50 75 44 35% 9,963 7,224 12,785 148,215 30 40 15,540 6,000 9,540 6,732 16,272
50 75 43 34% 12,306 9,703 15,636 204,618 50 10 15,540 6,000 9,540 7,956 17,496
50 75 42 34% 10,103 4,296 14,762 177,312 20 40 15,540 6,000 9,540 7,956 17,496
50 75 42 34% 10,103 4,296 14,762 177,312 50 10 15,540 6,000 9,540 7,956 17,496
15 25 42 105% 6,309 4,831 8,654 132,686 15 25 6,000 6,000 0 0 0
10 15 39 156% 6,374 4,210 8,650 129,273 10 15 6,000 6,000 0 0 0
50 50 39 39% 10,514 9,475 11,388 164,908 50 10 15,540 6,000 9,540 4,896 14,436
75 150 38 17% 7,815 6,648 8,803 144,831 30 40 21,420 6,000 15,420 18,972 34,392
50 30 33 41% 4,363 3,110 5,786 97,265 30 30 13,440 6,000 7,440 2,448 9,888
30 75 32 30% 9,768 7,451 12,453 160,124 30 30 15,330 6,000 9,330 5,508 14,838
30 50 30 38% 7,038 5,354 8,453 124,554 30 30 13,440 6,000 7,440 2,448 9,888
30 50 30 38% 7,038 5,354 8,453 124,554 30 30 13,440 6,000 7,440 2,448 9,888
15 20 28 80% 4,392 2,928 6,031 90,645 15 20 6,000 6,000 0 0 0
50 30 26 33% 5,557 3,624 8,016 101,563 30 30 13,440 6,000 7,440 2,448 9,888
10 15 25 100% 5,867 5,210 6,605 103,818 10 15 6,000 6,000 0 0 0
15 25 20 50% 4,125 3,058 5,698 76,366 15 25 6,000 6,000 0 0 0