MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 93

• Manufacturer Part Number: MCP3909RD-3PH1
• Description: REF DESIGN MCP3909 3PH ENGY MTR
• Manufacturer: Microchip Technology

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

© 2009 Microchip Technology Inc.
3. Four-quadrant reactive energy: metering reactive energy in positive/negative
FIGURE C-7:
Active out (-A)
Active out (-A)
Active out (-A)
Active out (-A)
reactive energy cannot truly reflect the status of reactive energy, whereas
4-quandrant reactive energy measuring gives a true picture of energy exchange.
Reactive energy in four quadrants represents four different reactive energy (see
Figure C-7). And the reactive energy is accumulated depending on which
quadrant it is located.
A－有功电能；R—无功电能；R
A－有功电能；R—无功电能；R
A－有功电能；R—无功电能；R
A－有功电能；R—无功电能；R
Where:
Definition Of 4 Quadrants To Measure Electrical Energy.
R
R
A
R
C
L
图2.4
图2.4
L
L
L
L
—感性无功电能；R
—感性无功电能；R
—感性无功电能；R
—感性无功电能；R
=
=
=
=
III (-R
III (-R
III (-R
III (-R
电能测量四象限定义
电能测量四象限定义
II (R
II (R
II (R
II (R
Reactive in (+R)
Reactive in (+R)
Reactive in (+R)
Reactive in (+R)
Reactive out (-R)
Reactive out (-R)
Reactive out (-R)
Reactive out (-R)
L
L
L
L
Power Calculation Theory
C
C
C
C
)
)
)
)
)
)
)
)
is active energy,
is reactive energy
is inductive reactive energy
s capacitive reactive energy
C
C
C
C
—容性无功电能
—容性无功电能
—容性无功电能
—容性无功电能
IV (-R
IV (-R
IV (-R
IV (-R
I (R
I (R
I (R
I (R
L
L
L
L
Φ
Φ
Φ
Φ
)
)
)
)
C
C
C
C
)
)
)
)
Current vector
Voltage vector
电流向量
电流向量
电流向量
电压向量
电压向量
电压向量
Active in (+A)
Active in (+A)
Active in (+A)
Active in (+A)
DS51723A-page 93