Download - 46577886 Teori kWh Meter
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PUR / 08 / 08 / 07
kWh METERkWh meter adalah alat pengukur
energi listrik yang mengukur secara langsung hasil kali
tegangan, arus factor kerja,kali waktu yang tertentu (UI Cos φ t) yang bekerja padanya selama
jangka waktu tertentu tersebut.
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PUR / 08 / 08 / 07
GAMBAR PRINSIP KERJA KWH METER
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PUR / 08 / 08 / 07
Keterangan Gambar :M = Magnit permanentCp = inti besi kumparan teganganWp =kumparan tegangan yang dapat dianggap sebagai reaktansi murni, karena lilitan cukup besarCc = Inti besi kumparan arusWc = kumparan arusIp = arus yang mengalir melalui WpI = Arus beban yang mengalir melalui WcF= Kumparan penyesuaian fasa yang diberi tahanan RRGS = Register1L & 2S = Terminal sumber daya masuk2L & 1S = Terminal daya keluar
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PUR / 08 / 08 / 07
Contoh Papan nama Meter tarif tunggal
AWAS MEMBUKA SEGEL DIDENDA
kWh0 0 0 0 0
ENERTECSCHLUMBERGER
MILIKP L N
METER kWh FASA TIGA 4 KAWAT JENIS A6C2
5 (20) A 3 x 220 / 380 V 50 Hz k = 222.2/9PUTARAN KwH
P. L. N. No. JA3 0014709 00026702
-1986
7810436 BUATAN PERANCIS
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PUR / 08 / 08 / 07
Contoh Papan nama Meter tarif Ganda
kWh
0 0 0 0 0MECOINDO
ENERTEC
MILIKP L N
KILO WATT HOUR FASA TIGA 4 KAWATJENIS A6C1 KELAS 2
50 (100) A 3 x 220 / 380V 50 Hz k = 37 29/33 PUT/kWh
4885044
0 0 0 0 0
L
N
Nn
220 V ~
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PUR / 08 / 08 / 07
φ
Ф1
Ф2
Sin = Cos φ V
Ф1 ditimbulkan oleh arus I mengalir di kumparan WcФ2 ditimbulkan oleh arus Ip mengalir di kumparan Wp dan Ip lagging 900 terhadap tegangannya
Gambar 2Dengan mengambil persamaan moment alat ukur type induksi :T = KW Ø1. Ø2 Sin
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PUR / 08 / 08 / 07
1. Kumparan Tegangan2. Kumparan arus3. Elemen Penggerak/piringan4. Rem Magnit5. Register6. Name Plate7. Terminal Klemp
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PUR / 08 / 08 / 07
PRINSIP KERJA KWh METER
S U
U
S
F
N
Kumparan tegangan
Magnit permanen
Priring Aluminium
Beban
Kumparan Arus
Fluks Arus Fluks Arus
Fluks Tegangan
TEORI DASAR kWh METER
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PUR / 08 / 08 / 07
VEKTOR DIAGRAM
BFN
1 2 3 4 6 BEBAN
φ Φ2
Φ1
V
I
V/ωL
Besar kopel yang bekerja pada piringan adalah :TD = K. W.Φ1. Φ2.Sin D ~ W.I. V/ωl .Sin (90 – φ)
TD ~ V.I.Cos φ N = V.I.Cos φ
Kecepatan putaran piringan berBanding lurus dengan V.I.Cos φ
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PUR / 08 / 08 / 07
U
S
KOMPONEN kWh METER
Kumparan TeganganBerfungsi sebagai pembangkit fluks Tegangan (фu)
Kumparan ArusSebagai pembangkit fkuhs Arus (фi)
Piringan Aluminium Sebagai tempat integrasi фu dan фiSerta terjadinya arus foucault sehinggaTimbul momen putar pada piringan.
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PUR / 08 / 08 / 07
0 0 0 0 0 0
Magnit PermanenBerfungsi sebagai pengereman dan memBerikan perlawanan putaran ikutan dariPiringan aluminium.
Kotak TerminalSebagai tempat kabel masuk dan keluarAPP dari sambungan rumah ke instalasi
Register /pencatatSebagai pencatat / penghitung jumlah Energi terpakai di tempat pelanggan.
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PUR / 08 / 08 / 07
S U
U
S
F
N
Fluks Arus Fluks Arus
Fluks Tegangan
U
FI
Pengawatan Normal
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PUR / 08 / 08 / 07
SU
S
U
F
N
Fluks Arus Fluks Arus
Fluks Tegangan
S
FI
Fasa dan NetralDibalik posisinya
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PUR / 08 / 08 / 07
KWh meter 1 fasa
BFN
1 2 3 4 6 BEBAN
S
F I
Kumparan Arus dibalik
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PUR / 08 / 08 / 07
B
BEBAN1 2 3 4 5 6 7 8 9 10 12
KWh meter 3 fasa
R
S
TN
Pr = Ur . Ir . 1x = 1xPs = Us . Is . 1x = 1xPt = Ut . It . 1x = 1xP3ф = 3x
Pengawatan Normal
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PUR / 08 / 08 / 07
B
BEBAN1 2 3 4 5 6 7 8 9 10 12
R
S
TN
Ps = Us . Is . 1x = 1xPr = Ur . Ir . 1x = 1xPt = Ut . It . 1x = 1xP3ф = 3x
kWh meter 3 fasa R & S dibalik
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PUR / 08 / 08 / 07
B
BEBAN1 2 3 4 5 6 7 8 9 10 12
R
S
TN
Pr = Ur . Ir . (-1x) = -1xPs = Us . Is . 1x = 1xPt = Ut . It . 1x = 1xP3ф = +1x
Kumparan Arus fasa R dibalik
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PUR / 08 / 08 / 07
B
BEBAN1 2 3 4 5 6 7 8 9 10 12
R
S
TN
Pr = Ur . Ir . (-1x) = -1xPs = Us . Is . (-1x) = -1xPt = Ut . It . 1x = 1xP3ф = -1x
Kumparan fasa R & S dibalik
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PUR / 08 / 08 / 07
B
BEBAN1 2 3 4 5 6 7 8 9 10 12
R
S
TN
Pr = Ur . Ir . (-1x) = -1xPs = Us . Is . (-1x) = -1xPt = Ut . It . (-1x) = -1xP3ф = -3x
Fasa R, S, T dibalik
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PUR / 08 / 08 / 07
UR
-UT
US
-UR
UT
-US
URS URT
UST
USRUTR
UTS
Ir
-It
Is
-Ir
It
-Is
VEKTOR U & I PADA KWH & KVARH 3 PHASE
Cos 0 = 1Cos 30 = 0,866Cos 60 = 0,5Cos 90 = 0Cos 120 = -0,5Cos 150 = -0,866Cos 180 = -1Cos 210 = -0,866Cos 240 = -0,5Cos 270 = 0Cos 300 = 0,5Cos 330 = 0,866Cos 360 = 1
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PUR / 08 / 08 / 07