This article describes the main features of the PIC18F87J72, the block diagram, the main features of the PICtailTM Plus daughter board for power detection, and the daughter board circuit diagram. Microchip's PIC18F87J72 is a high-performance MCU with nanoWatt technology with two 24-bit analog front ends (AFEs) and LCD drivers. SINAD is -90dB per channel, -101dBc for THD, 103dB for SFDR, low drift internal reference voltage (12 ppm/°C), programmable data rate to 64ksps, gain up to 32V/V, target for meter, power measurement And surveillance, portable instrumentation and medical surveillance.
PIC18F87J72 target application:• Energy Metering
• Power Measurement and Monitoring
• Portable InstrumentaTIon
• Medical Monitoring
figure 1. PIC18F87J72 (80-pin) block diagram
PIC18F87J72 Power Detection PICtailTM Plus Daughter Board
The PIC18F87J72 Energy Monitoring PICtailTM Plus Daughter Board is a single phase energy monitor daughter board featuring the PIC18F87J72 high performance 8-bit MCU with 16/24-bit delta-sigma A/D converters. This low cost design uses a shunt for the current The PIC18F87J72 calculates acTIve/reacTIve energy, forward/reverse energy, acTIve/reactive/apparent power and RMS current/voltage. The Energy Monitoring PICtail Plus Daughter Board interfaces to the Explorer 16 Development Board (DM240001) Through additional Explorer can be performed. Through the Explorer 16 Development Board, wired and wireless network connections can be made through other PICtail Daughter boards such as the Ethernet PICtail (AC164123) and the WiFi PICtail (AC164136-4).
This Kit Contains:
One PIC18F87J72 Energy Monitoring PICtailTM Plus Daughter Board
figure 2. PIC18F87J72 Power Detection PICtailTM Plus Daughter Board Outline Drawing
PIC18F87J72 Power Detection PICtailTM Plus Daughter Board Features:
Single phase energy measurement
Energy calculation firmware: Active/Reactive Energy, Forward/Reverse Energy, Active/Reactive/Apparent Power, RMS Current & Voltage
Low cost shunt based design
Better than IEC Class 0.5 performance
Interface to Explorer 16 Development Board
image 3. PIC18F87J72 Power Detection PICtailTM Plus Daughter Board Circuit Diagram (1)
Figure 4. PIC18F87J72 Power Detection PICtailTM Plus Daughter Board Circuit Diagram (2)
Bare aluminium conductors are electrical conductors made from pure aluminium. They are used in various electrical applications, including overhead power transmission and distribution lines.
Bare aluminium conductors have several advantages over other types of conductors. Firstly, aluminium is lighter than copper, which makes it easier to handle and install. This is particularly important for overhead power lines, where the weight of the conductor can have a significant impact on the cost and feasibility of the project.
Secondly, aluminium has a higher conductivity-to-weight ratio than copper. This means that for a given weight, aluminium conductors can carry more current than copper conductors. This makes them more efficient in terms of power transmission.
However, bare aluminium conductors also have some disadvantages. One major drawback is their lower mechanical strength compared to copper conductors. This makes them more susceptible to sagging and stretching under the weight of their own span, especially in hot weather conditions. To address this issue, aluminium conductors are often reinforced with steel strands to improve their mechanical strength.
Another disadvantage is that aluminium has a higher resistance than copper, which can result in higher power losses and voltage drops. To mitigate this, aluminium conductors are typically designed with larger cross-sectional areas compared to copper conductors to compensate for the higher resistance.
Overall, bare aluminium conductors are widely used in electrical power transmission and distribution systems due to their cost-effectiveness, lightweight, and high conductivity-to-weight ratio. However, careful design and installation considerations are necessary to ensure their mechanical strength and minimize power losses.
Aluminium Bare Stranded Conductors,Bare Aluminium Conductors,Overhead Transmission Line, Transmission line Bare Aluminium Conductors
Ruitian Cable CO.,LTD. , https://www.rtpowercable.com