How much does a three-phase four wire smart meter cost? How to connect the wires?
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The price of a three-phase four wire smart meter varies depending on the brand, function, region, and quality, with the general range as follows:
Ordinary functional type:
Price range: ¥ 200- ¥ 600
Suitable for ordinary households or small commercial places, it only has basic electricity metering and display functions.
Multi functional type:
Price range: ¥ 600- ¥ 1500
Additional features include data storage, remote monitoring, prepaid, peak and valley electricity price measurement, etc.
High end intelligent type:
Price range: ¥ 1500 and above
Specially designed for industrial enterprises, supporting complex functions such as power analysis, real-time communication, and optimization of electricity usage behavior.
When purchasing, it is recommended to choose products from reputable manufacturers or certified ones to ensure quality and after-sales service.
2、 Wiring method of three-phase four wire smart meter
The wiring of a three-phase four wire smart meter needs to be operated correctly according to the terminal diagram of the meter. The following are general wiring methods:
1. Prepare tools and precautions
Tools: screwdriver, insulation tape, multimeter, etc.
matters needing attention:
Operate after disconnecting the power supply to ensure safety.
Carefully check the terminal identification to avoid misconnection.
2. Basic definition of wiring terminals
The wiring terminals of an electric meter are usually divided into two parts:
Current circuit (incoming and outgoing lines): used to connect load currents, including phase A, phase B, and phase C.
Voltage circuit (incoming and outgoing lines): used to detect voltage signals, including neutral line (N) and three-phase live line (A, B, C).
3. Wiring steps
Taking the common direct access meter as an example:
Connect three-phase live wires:
Connect the A-phase live wire to terminals 1 (input) and 2 (output) of the electricity meter.
Connect the B-phase live wire to terminals 3 (input) and 4 (output).
Connect the C-phase live wire to terminals 5 (input) and 6 (output).
Connect neutral wire (N):
The neutral input is connected to terminal 7, and the neutral output is connected to terminal 8.
Check the correctness of wiring:
Ensure that all wiring terminals are tightened and there are no exposed copper wires.
Use a multimeter to check if the circuit is unobstructed.
Power on test:
After powering on, observe whether the electricity meter is working properly (such as the display screen lighting up, reading changes, etc.).
3、 Summary
The price of three-phase four wire smart meters varies depending on their function and quality, and household and industrial users should choose the appropriate model according to their needs. When wiring, be sure to follow the terminal diagram of the electricity meter correctly and ensure safe operation. If you are not familiar with electrical wiring, it is recommended to have a professional electrician handle it to avoid incorrect connections or electrical hazards.
