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MAXQ3181-RAN+ データシート(PDF) 28 Page - Maxim Integrated Products

部品番号 MAXQ3181-RAN+
部品情報  Low-Power, Active Energy, Polyphase AFE
PDF  84 Pages
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メーカー  MAXIM [Maxim Integrated Products]
ホームページ  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAXQ3181-RAN+ データシート(HTML) 28 Page - Maxim Integrated Products

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Low-Power, Active Energy, Polyphase AFE
28
______________________________________________________________________________________
Operating Mode Register 1 (OPMODE1) (0x002) (continued)
BIT
NAME
FUNCTION
These bits determine how power is calculated on each of the three phases.
00
PA = IA x VA
PB = IB x VB
PC = IC x VC
Use this configuration when the load is
connected in a wye arrangement and
neutral is connected to MAXQ3181 ground,
or when the load is connected in a delta
arrangement and isolated voltage and
current sensors are used. This
arrangement measures power in each load
branch rather than power in each source
branch.
01
PA = IA x VA
PB = IB x (-VC)
PC = IC x VC
Use this configuration when the load is
connected in a four-wire delta
arrangement. In this arrangement, the BC
leg is split and VB-N is expected to be
equal to -VC-N. Voltages are referenced to
neutral.
10
PA = IA x VA
PB = IB x (-VA - VC)
PC = IC x VC
Use this configuration when the load is
connected in a four-wire wye arrangement,
but only two voltage sensors are
available. When connected in this way,
phase B is assumed to be ground.
1:0
CONCFG
11
PA = IA x VA
PB = IB x (VA - VC)
PC = IC x VC
Use this configuration when the load is
connected as a three-wire delta and it is
desired to measure the voltage and current
inside the delta legs, but to calculate the
power in each of the source circuits. When
connected this way, source phase B is
considered ground.
V
I
II
V
V
I
I
I
V
V
V
I
I
V
V
V
I
V
I
II
V
N
V
I
I
V
V
I



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