How much is the three-phase rail electricity meter in Shanghai? How does the Shanghai rail electric meter communicate with the network? Which is the best quality three-phase rail electricity meter in Shanghai?
DLT645-97/07 protocol and MODBUS_STU communication protocol are both compatible: When using the MODBUS protocol, the baud rate of 1200240048009600, even parity or no parity, and odd parity can be selected.

DTSD2026-N three-phase four wire, DSSD22026-N three-phase three wire (new rail type) multifunctional electric energy instrument (hereinafter referred to as electric energy instrument) is a rail type active and reactive power combination electric energy instrument designed and developed to adapt to power grid transformation. It has high accuracy and feasibility. This instrument is an excellent product manufactured using internationally advanced ultra-low power large-scale integrated circuit technology and SMT process. The product manufacturing standards comply with all technical requirements for three-phase static energy meters in the power industry standards such as GB/T17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters", GB/T17215.322-2008 "Level 1 and Level 2 Static AC Reactive Energy Meters", DL/T645-2007 "Communication Protocol for Multifunctional Energy Meters", etc. It is the most ideal choice for enterprises, substations or power plants that require reactive power assessment, and is also suitable for use in transmission and distribution or distribution automation.
This product complies with the MODBUS_STU communication protocol and can be used to measure three-phase AC active and reactive energy in a 50Hz reference frequency power grid. It can also perform forward and reverse energy measurement, as well as infrared and RS485 communication functions. Its characteristics are high precision, good reliability, wide load, low power consumption, straight error curve, and strong anti-interference ability. Product features:
1. Using a dedicated measuring chip for measurement calculation, with high accuracy, it can be easily made into active 0.5, 0.5S, Level 1 products, and reliable operation
2. It has positive and negative ABC three-phase phase separated active and reactive power
3. It has the function of displaying ABC three-phase current, voltage, power, and power factor
4. Adopting an LCD screen with backlight for clear and intuitive display
5. Equipped with infrared remote control screen flipping display function, convenient for users to access information6. Equipped with infrared and RS485 communication interfaces, it can achieve remote monitoring and is an excellent choice for power grid renovation
.
Super instruction format, specially customized, one instruction can read back the following parameters for convenient special applications.