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STPMC1 Datasheet(PDF) 48 Page - STMicroelectronics

Part # STPMC1
Description  Programmable poly-phase energy calculator IC
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPMC1 Datasheet(HTML) 48 Page - STMicroelectronics

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Theory of operation
STPMC1
48/77
Doc ID 15728 Rev 6
Equation 11
●
iN MOM: 16-bit momentary value of neutral current
Note:
In systems 3-phase, no neutral, uST, uTR, uRS replace uR, uS, uT respectively.
9.17.3
Group 2 data records
2.1 DER:
●
uR RMS: 12-bit RMS value of R phase voltage
●
iR RMS: 16-bit RMS value of R phase current
2.2 DES:
●
uS RMS: 12-bit RMS value of S phase voltage
●
iS RMS: 16-bit RMS value of S phase current
2.3 DET:
●
uT RMS: 12-bit RMS value of T phase voltage
●
iT RMS: 16-bit RMS value of T phase current
2.4 DEN:
●
uN RMS: 12-bit RMS value of voltage channel of NDSP. It may be DAN-V or DAH
according to the value of ENH bit.
●
iN RMS: 16-bit RMS value of neutral current
Note:
In systems 3-phase, no neutral, UST, UTR, URS replace UR, US, UT respectively.
RMS
X
4
i
sIRMS
⎟
⎠
⎞
⎜
⎝
⎛
=
∑
Figure 16.
Group 2 data records
DER
parity
iR RMS
uR RMS
DES
DET
DEN
parity
iS RMS
uS RMS
parity
iT RMS
uT RMS
parity
iN RMS
uN RMS
12 bit
4 bit
16 bit
DER
parity
iR RMS
uR RMS
parity
iR RMS
uR RMS
DES
DET
DEN
parity
iS RMS
uS RMS
parity
iS RMS
uS RMS
parity
iT RMS
uT RMS
parity
iT RMS
uT RMS
parity
iN RMS
uN RMS
parity
iN RMS
uN RMS
12 bit
12 bit
4 bit
4 bit
4 bit
16 bit
16 bit
DER
parity
iR RMS
uR RMS
DES
DET
DEN
parity
iS RMS
uS RMS
parity
iT RMS
uT RMS
parity
iN RMS
uN RMS
12 bit
4 bit
16 bit
DER
parity
iR RMS
uR RMS
parity
iR RMS
uR RMS
DES
DET
DEN
parity
iS RMS
uS RMS
parity
iS RMS
uS RMS
parity
iT RMS
uT RMS
parity
iT RMS
uT RMS
parity
iN RMS
uN RMS
parity
iN RMS
uN RMS
12 bit
12 bit
4 bit
4 bit
4 bit
16 bit
16 bit



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