描述
High electricity bills yet unsure where to start? What you lack is just a smart meter that can understand electricity usage
After renovating a new house, starting a studio, and managing a small factory - the electricity bill is delivered on time every month, but you can never figure it out:Which device is stealing electricity?Air conditioning, oven, motor, lighting... all electrical appliances are running, but you don't even know how much electricity each phase is using.
Are you still struggling with these issues
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Electricity bills skyrocketed at the end of the month, but you can't pinpoint which link went wrong?
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Do you want to provide tenants or merchants with separate meters for metering? Traditional meters have complex wiring and are difficult to install?
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Home Assistant smart home installed at home, but electricity data is a blind spot?
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After photovoltaic grid connection, it is impossible for ordinary electricity meters to monitor the bidirectional flow of power generation and consumption?
7P guide rail three-phase four wire direct energy meteris designed to solve these "confused accounts" of electricity consumption for you. It directly connects to a maximum current of 100A without the need for an external transformer, and can be installed on a 35mm rail with just one card -allows you to have a clear understanding of the direction of each kilowatt hour.
What is a 7P rail three-phase direct energy meter?
Simply put, this is aIntelligent energy meter that can be directly connected to three-phase four wire circuit (3 × 220/380V)-The rated current is 3 × 5 (100) A, and the accuracy reaches0.5S level, which means it can accurately measure the voltage, current, power, and energy of each phase-.
. The biggest difference from traditional meters is that it comes withRS485 communication interface, and supportsMODBUS-RTUAndDL/T645-2007dual protocol-This means that you can integrate it into energy management systems, PLCs, Home Assistant and other platforms to achieveRemote meter reading, real-time monitoring, multi rate metering, remote opening and closing of switchesWaiting for advanced features.
Even better, it adopts7P modular width, 35mm DIN standard rail installation-With a compact size, it can be directly mounted on the guide rail of the distribution box without the need for additional brackets.
[Insert product main image here: physical photo of 7P rail three-phase direct energy meter, showing the front LCD display screen, wiring terminals, and rail buckle]
Five core functions make electricity management unprecedentedly simple
Directly connect to 100A without the need for external transformers, reducing wiring costs directly
What is the function?Traditional high current meters often require external current transformers to "reduce" the current before measuring, which not only increases equipment costs but also makes wiring much more complex. And this electric energy meter adoptsthree-phase four wire direct wiring, The maximum current of 100A can be directly connected to-without the need for any external transformers. How to operate
How to operate?The wiring is very simple - simply connect the A, B, C three-phase live wires and N wires to the corresponding input and output terminals of the electricity meter-There are clear markings on the terminals of the electric meter, and wiring according to the diagram can be done by an electrician in ten minutes-.
What are the benefits for users?• cost-saving——Buy one less set of transformers and save a few hundred yuan directlySave space——Put fewer devices in the distribution box, and the small size of 7P saves spacesave time——Reduce wiring steps by half, double installation efficiencymore reliable——Without one intermediate link, there is one less point of failure. For situations with small and medium power loads——villas, shops, small factories, office buildings-100A direct access is more than enough-.
dual protocol support, easy access to any management system
What are the functions?The RS485 interface of the electric meter supports bothMODBUS-RTU(default 9600bps) andDL/T645-2007communication protocols for the power industry-. Whether you are using industrial PLCs, building automation systems, or Home Assistant smart home platforms, they can seamlessly integrate. How to operate
?Simply connect the A/B line of RS485 to your collection device or serial server, and configure the corresponding protocol and baud rate in the system. The default MODBUS-RTU protocol for the electricity meter is 9600bps baud rate, 8 data bits, 1 stop bit, and no checksum-.
. What are the benefits for users?You no longer have to worry about the embarrassment of "buying back and finding incompatible protocols".Industrial users use MODBUS to connect PLC and configuration software, smart home players use MODBUS to connect HA, and power industry users use DL/T645 to connect to the State Grid system- one meter, three gameplay modes, compatible with all mainstream platforms.
35mm rail installation · 7P compact size, even the smallest distribution box can be installed
What is the function?The electric meter adopts35mm DIN standard rail installation, with a width of only 7 modules (about 126mm)-. Equivalent to occupying less than the length of a mobile phone in a distribution box. How to operate
? Align the buckle on the back of the electric meter with the 35mm guide rail inside the distribution box, gently push it, and with a click, it is installed in place. No need for screws to fix, no need for perforated brackets. What are the benefits ofAlign the buckle on the back of the electricity meter with the 35mm guide rail inside the distribution box, gently push it, and with a click, it will be installed in place-No need for screws to fix, no need for perforated brackets.
for users? Old style electricity meters are large and heavy, and installation requires drilling holes in the wall and fixing brackets, which is time-consuming and laborious. The guide rail design makes installation as simple as playing with toy blocksOld style electricity meters are large and heavy, and installation requires drilling holes in the wall and fixing brackets, which is time-consuming and laborious. And the guide rail design makes installation more like. For households, shops, or small computer rooms with tight distribution box space, the small size of 7P means thatFor households, shops, or small computer rooms with tight distribution box space, the small volume of 7P meanscan be directly installed without modifying the distribution box. The terminal adopts anti misconnection design, making the wiring safer-.
. What is the function of remote opening and closing+multiple rate metering, a powerful tool for industrial and commercial electricity management
?The electric meter is equipped with a built-in relay, which supportsremote control of opening and closing through communication commands-. Simultaneously supportingmulti rate time-based metering (peak/off peak/off peak/off peak/off peak)to meet the precise billing needs under the industrial and commercial time of use electricity pricing policy-.
. How to operate? By writing values to specific registers through MODBUS instructions,can control the opening and closing of switches - writing0x5555is for closing, and writing0xAAAAis for closing-. What are the benefits of remotely setting the multiple rate schedule through communication-.
for users? • Prepaid Scenario: Tenants automatically cut off power when they owe fees, and after renewal, they can remotely switch on and send power without having to personally go-•Time of use electricity price optimization: Electricity consumption during peak and off peak periods is separately calculated to help you analyze "when electricity is most expensive" and guide off peak electricity consumption •Remote safety control: If abnormal loads are found, emergency power can be cut off remotely without the need for people to be on site-. For scenarios such as apartment rentals, office subletting, and small factories, these two functions can be considered as "essential needs".Apartment rental, office subletting, small factoryWaiting for the scene, these two functions can be called "essential needs".
HA native integration brings electricity data to life
What is the function?This energy meter can be quickly connected to theHome Assistantsmart home platform-through RS485 to WiFi/Ethernet gateway. After integration, you can create automation scenarios such aspower consumption dashboard, real-time power monitoring, time-sharing statistics, and over limit alarmin HA. How to operate-.
?• Connect the RS485 interface of the electricity meter to a serial server (such as ESP32+RS485 module) • Configure Modbus integration in Home Assistant and add the electricity meter as a Modbus device-• Add entities to the HA dashboard to see real-time data such as voltage, current, power, and total electricity consumption for each phase-
What are the benefits for users? Electricity consumption data is no longer a pile of cold numbers, but a visualized, interactive, and automated intelligent asset. You can:Electricity consumption data is no longer a pile of cold numbers, butVisual, interactive, and automatedIntelligent assets. You can:
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You can easily seethe current electricity consumption of your home/factory on your mobile phone
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SettingsPower over limit alarm- When the total power exceeds the set value, HA automatically pushes a notification
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Combined with electricity price data, calculatedaily electricity expenses
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Compare the electricity consumption data withphotovoltaic power generation data, and real-time grasp the proportion of "spontaneous self use"
forwhole house intelligent players, new energy vehicle owners, and photovoltaic users, this is not just an electricity meter, but also the "data heart" of the entire household energy management.Who is suitable for
? Full coverage of three major scenes
🏠 Full house smart home user
You are already using Home Assistant to manage the lighting, air conditioning, and curtains in your home, but the electricity data is blank. This electricity meter is installed behind the main gate of the household, and all electricity data is clear at a glance. In conjunction with photovoltaic or energy storage systems, you can even see in real-time how much electricity was generated, used, and saved today.All electricity consumption data is clear at a glanceCombined with photovoltaic or energy storage systems, you can even see in real time how much electricity was generated, used, and saved today.
🏪 Shop/office building/small factory
three-phase four wire power supply, 100A directly connected to-, fully covering small and medium-sized commercial loads.Pre payment Management for Sublease Merchants, Workshop Equipment Electricity Monitoring, Office Partition Metering- One Meter Meets All Electricity Management Requirements-.
🔌 New energy and energy-saving renovation project
photovoltaic grid connection, energy storage system, charging pile - these scenarios all requirebidirectional energy meteringandhigh-precision real-time data. The 0.5S level accuracy ensures clear calculation of both power generation and consumption, providing reliable data support for energy-saving renovation. What do real users say? Previously, the monthly electricity bill was four to five thousand yuan, but I had no idea which machine was charging for electricity. After installing this three-phase electricity meter and using HA to create a power monitoring panel, it was discovered that an old air compressor had a standby power consumption of over 800 watts. After replacing
What do real users say?
Previously, the monthly electricity bill was around four to five thousand, but I had no idea which machine was consuming electricity. After installing this three-phase electricity meter and using HA to create a power monitoring panel, I discovered that an old-fashioned air compressor had a standby power consumption of over 800 watts. After replacement, the monthly electricity bill was directly saved by over 600. ”——Wang, Director of Dongguan Hardware Processing Factory
"My home is a self built villa, equipped with photovoltaic panels and charging stations. I have been looking for a three-phase electricity meter that can be connected to HA. This watch can be directly connected to 100A without the need for a transformer, making installation particularly simple. Now the HA dashboard displays four data points simultaneously: power generation, electricity consumption, grid purchase, and surplus electricity grid connection, making it easy to see how much electricity is saved each day. ”Mr. Xu from SuzhouElectricity generation, consumption, purchasing electricity from the grid, and connecting surplus electricity to the gridFour pieces of data are displayed simultaneously, making it clear how much electricity is saved each day. ”——"We have 12 tenants in our office building, and in the past, we used to go door-to-door every month to read meters and calculate electricity bills, which was extremely annoying. After using this electric meter,
We have 12 tenants in our office building. Before, we used to go door-to-door every month to read meters and calculate electricity bills, which was extremely annoying. After using this meter,remotely reads meters and automatically issues bills. Those who owe fees can directly switch on remotely and renew the remote switch on. Nowmanagement efficiency has increased by 80%, and there is no need to argue with tenants about electricity bills anymore. ”Summary by a Property Manager of an Office Building in Chengdu: A single electricity meter has transformed electricity usage from a "confused account" to a "clear account"Property Manager of an Office Building in Chengdu
Summary: An electric meter transforms electricity usage from a "confused account" to a "clear account"
7P guide rail three-phase four wire direct energy meter, summarized by four keywords:
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✅Directly connected to- up to 100A, no need for external transformers, simple wiring and low cost-
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✅Dual protocol compatibility- MODBUS-RTU+DL/T645-2007, compatible with all mainstream systems-
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✅Rail Installation-35mm Standard Rail, 7P Compact Size, Distribution Box Can Install Even Small-
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✅ Intelligent Management- Remote Switching+Multiple Rate Measurement+HA Native Integration, Electricity Data Under Control-
Whether you are awhole house intelligent player, shop owner, factory manager, or new energy enthusiast, this electric meter can make your electricity management go from "a black eye" to "everything under control".
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