MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 101
MCP3909RD-3PH1
Manufacturer Part Number
MCP3909RD-3PH1
Description
REF DESIGN MCP3909 3PH ENGY MTR
Manufacturer
Microchip Technology
Datasheets
1.MCP3909T-ISS.pdf
(44 pages)
2.MCP3909T-ISS.pdf
(104 pages)
3.MCP3909RD-3PH3.pdf
(88 pages)
Specifications of MCP3909RD-3PH1
Main Purpose
Power Management, Energy/Power Meter
Embedded
No
Utilized Ic / Part
MCP3909, PIC18F2520, PIC18F4550
Primary Attributes
3-Ph, 220 VAC, In Case, LCD, USB, GUI
Secondary Attributes
Opto-Isolated Interface for Safety
Operating Voltage
220 V
Operating Current
5 A
Description/function
Energy Meter
For Use With/related Products
MCP3909
Lead Free Status / RoHS Status
Not applicable / Not applicable
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© 2009 Microchip Technology Inc.
To avoid complexity in calculation and to maximize the correction precision, the
following equations may be used to approximate K
small.
EQUATION C-80:
EQUATION C-81:
k'
2
k'
=
=
1
k
sin
=
=
2
–
Δ
k
cos
1
Δ
----- - k
50
ϕ
–
f
Power Calculation Theory
Δϕ
≈
⋅
----- - k
50
Δ
sin
f
1
≈
⋅
⋅
Δ
cos
k
2
ϕ
2
⋅
–
Δϕ
k
2
Δ
----- - sin
50
f
–
⋅
Δ
----- - sin
50
f
1
⋅
Δϕ
and K
⋅
2
cos
Δϕ
2
Δϕ
when the phase angle is
DS51723A-page 101
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