Valve-controlled energy metering module
1. Single-phase AC input
1) Voltage range: AC 80~260V.
2) Current range: 20mA~10A.
3) Signal processing: Use dedicated metering chip, 24-bit AD.
4) Overload capacity: 10A range is sustainable.
5) Input impedance: Voltage channel>1KΩ/V. Current channel≤100mΩ.
2. Switch output
1 channel, relay open circuit output, voltage and current overload alarm protection output function
3. Communication interface
1) Interface type: Optional RS-485, TTL, 433M wireless interface.
2) Communication protocol: MODBUS-RTU protocol.
3) Data format: Software setting “n,8,1”, “e,8,1”, “o,8,1”, “n,8,2”.
4) Communication rate: The baud rate can be set to 1200, 2400, 4800, 9600bps.
5) Communication data: voltage, current, power, power factor, power and other electrical parameters.
Product Description
The valve-controlled energy metering module is a type of energy metering module that integrates the functions of energy metering and valve control, but there is limited information about its specific definition and detailed working principle. However, combined with the general characteristics of energy metering modules and the concept of valve control, some explanations and speculations can be made about valve-controlled energy metering modules.
Energy metering module: A device used to measure and record energy consumption, usually including components such as current transformers (CT), voltage transformers (VT), and metering chips. The energy consumption is calculated by measuring current and voltage, and the results are recorded in specific units (such as kWh).
Valve control: Usually refers to a device or system that controls the flow of fluids (such as gases and liquids). In power systems, although it does not directly involve fluid control, “valve control” may refer to a certain control function related to energy metering, such as remote control of the supply or cutoff of energy.
Features of the electric energy metering module
1. Collect multiple electrical parameters such as voltage, current, power, and electric energy in single-phase AC or DC, with complete information.
2. Adopt special measurement chip, effective value measurement method, and high measurement accuracy.
3. With RS-485 communication interface, optional TTL, 433M wireless communication.
4. The communication protocol adopts standard Modbus-RTU, with good compatibility and convenient programming.
5. Wide working voltage AC80～264V.
6. High isolation voltage, with a withstand voltage of AC:2000V.
7. Can be changed and customized according to customer requirements.
Application fields
Valve-controlled energy metering modules may be widely used in the following fields:
1. Smart grid: As an important part of smart grid, it realizes accurate metering and remote control of electric energy.
2. Demand response: In the power demand response system, the supply and demand of the power grid are balanced by remotely controlling the supply or cut-off of electric energy.
3. Energy management: In industrial, commercial and residential electricity consumption, it provides accurate energy metering data and remote control functions, which helps to achieve efficient utilization and management of energy.
4. Charging facilities: In charging facilities such as electric vehicle charging stations, it is used to accurately measure energy consumption and control the charging process.
Precautions
1. Technology update: With the continuous development of power technology and communication technology, the technology of valve-controlled energy metering modules is also constantly updated and improved. Therefore, it is necessary to pay attention to its technical level and compatibility when selecting and using it.
2. Safety protection: Since the valve-controlled energy metering module involves the metering and control functions of electric energy, it is necessary to strengthen safety protection measures to prevent illegal access and operation.
3. Maintenance and management: Regularly maintain and manage the valve-controlled energy metering module to ensure its normal operation and accuracy.
8 self-protection functions
1. Input power limit protection
When the power of the battery board is greater than the rated power, the controller will limit the power of the battery board within the rated power to prevent the current from being too large to damage the controller, and the controller will enter the current charging limit.
2. Battery reverse connection protection
The system will not work after the battery is turned on inversely, and the controller will not be burned.
3. Photovoltaic input voltage overvoltage protection
The controller will automatically turn off the PV input if the voltage at the PV array input is too high.
4. PV input short circuit protection
The controller will disconnect the charging after the PV array input is short-circuited, and the charging will automatically resume when the short-circuit condition is cleared.
5. PV input reverse connection protection
When the polarity of the PV array is reversed, the controller will not be damaged and will continue to work normally after correcting the wiring error.
6.Load over power protection
When the load exceeds the rated power, the load will delay protecting the output.
7. Anti-reverse load protection at night
Prevent the battery from discharging through the battery plate at night.
8.Over temperature protection
TVS lightning protection
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