MCP3909RD-3PH3 Microchip Technology, MCP3909RD-3PH3 Datasheet - Page 42

Manufacturer Part Number

MCP3909RD-3PH3

Description

REF DESIGN FOR MCP3909 W/18F2520

Manufacturer

Microchip Technology

Datasheets

1.MCP3909T-ISS.pdf (44 pages)

2.MCP3909T-ISS.pdf (104 pages)

3.MCP3909RD-3PH3.pdf (88 pages)

4.MCP3909-ISS.pdf (40 pages)

Main Purpose

Power Management, Energy/Power Meter

Utilized Ic / Part

MCP3909, PIC18F2520, PIC18F4550

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Secondary Attributes

Embedded

Primary Attributes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

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

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.