การเลือกขนาดมิเตอร์ไฟฟ้าให้เหมาะกับบ้าน.pdf

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  • 51TPA news

    February 2012 No. 182

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    10 5 (15) 1 100 480 - 1,500 2,080 300 2,380 11 - 30 15 (45) 1 250 1,000 300 3,000 4,550 2,000 6,550 31 - 75 30(100) 1 400 1,750 1,500 6,000 9,650 4,000 13,650 76 - 100 50(150) 1 550 2,500 3,150 9,000 15,200 8,000 23,200

    30 15 (45) 3 750 3,700 1,350 6,000 11,800 6,000 17,800 31 - 75 30(100) 3 1,200 8,600 5,100 12,000 26,900 12,000 38,900 76 - 100 50(150) 3 1,650 9,000 15,000 16,000 41,650 24,000 65,650 101 - 200 200 3 2,950 9,300 34,800 30,000 77,050 48,000 125,050 201 - 400 400 3 5,650 9,600 74,100 42,300 131,650 96,000 227,650

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    (1-2)

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    2: (.)

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    10 5 (15) 1 100 480 - 2,000 2,580 300 2,880 11 - 30 15 (45) 1 250 1,000 300 4,500 6,050 2,000 8,05031 - 75 30 (100) 1 400 1,750 1,500 10,800 14,450 4,000 18,450

    76 - 100 50 (150) 1 550 2,500 3,150 18,600 24,800 8,000 32,800 30 15 (45) 3 750 3,700 1,350 10,300 16,100 6,000 22,100 31 - 75 30 (100) 3 1,200 8,600 5,100 26,400 41,300 12,000 53,300 76 - 100 50 (150) 3 1,650 9,000 15,000 44,800 70,450 24,000 94,450

    101 - 200 200 3 2,950 9,300 34,800 87,600 134,650 48,000 182,650201 - 400 400 3 5,650 9,600 74,100 157,500 246,850 96,000 342,850

  • 52 TPA news

    No. 182 February 2012

    1.

    2. 4

    140

    3. 1 220 2

    4. 3 380/220 4

    5.

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    )

    (W)

    P = I x V ((W) = (Amp) x (V)) I = P/ V 1.25 Factor

    1

    1

    (W)

    (Amp)

    1) 36W 10 36/220x10 = 1.64

    2) 20W 5 20/220x5 = 0.45

    3) 100W 4 100/220x4 = 1.82

    4) 1,800W 2 1,800/220x2 = 16.36

    5) 250W 1 250/220 = 1.14

    6) 200W 1 200/220 = 0.91

    7) 3,000W 1 3,000/220 = 13.64

    = 1.64+0.45+1.82+16.36+1.14+0.91+13.64 = 35.96

    Factor 25% 35.96 x 1.25 = 44.95

    44.95

    30 30 100

    30/100 ( 1-2)

    30

    1

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