MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 42

• 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

MCP3909 / dsPIC33F 3-Phase Energy Meter Reference Design
DS51723A-page 42
4.4.1
The process of phase calibration is as follow:
1. Setup input condition: Phase A, voltage input 220V, current input is the current
2. Load the dsPIC33F with the proper correction factors. This is automatically done
3.
4. Repeat for Phases B & C.
Note:
for region 1, voltage and current inputs of phase B and phase C are zero.
using the PC software. See Chapter 5. “PC Software”.
phase A.
Repeat steps 1 and 2 for phase lag calibrations for all current regions of
Phase Lag Calibration Process
If the power metering error still can not meet the requirement, the meter can
be calibrated a few more times. When doing so, simply input a new error
value into the front-end of the meter.
© 2009 Microchip Technology Inc.