Energy meter Energy meter, appearance
In this article I will tell and show in the photo how the electric meter is arranged. For example, we will analyze (open) the counter Energomera TsE 6807 P production of the Stavropol concern "Energomera". What the counter looks like - in the photo on the left.
Counter Energomera TsE6807P - one of the simplest in design, the easier it will be to consider its device.
By the way, on electric meters on the blog SamElektrik.ru published several articles:
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How an electric meter measures energy
As always, at first - a little theory, so to speak, opening remarks.
First of all, the meter differs from all other home electrical devices in that it is ON sequentially with all devices. That is, the circuit of the electric meter is designed so that all the current that it takes into account passes through it. Well, if not all the current passes, then the regulatory authorities of energy supervision really do not like it.
How it happens - in the article Theft of Electricity, or in a discussion about it.
The current passes in the meter through a special calibrated shunt with a certain resistance (hundredths of Ohm). According to Ohm's law, a voltage is formed on the conductor through which the current passes, which is directly proportional to the current and resistance:
U \u003d I · R
This voltage uniquely determines the current. Voltage is measured, and so the current also becomes known, indirectly.
The power consumed by the appliances in the apartment is equal to the current multiplied by the voltage:
P \u003d I · U
But how do you know how much power "ate" electrical appliances? To do this, the power is multiplied by time, receive electrical energy:
E \u003d I · U · t
For a unit of measurement of electrical energy, which shows how many kilowatts passed through the meter within an hour, kilowatts per hour were taken, in abbreviated form - kWh
Strictly speaking, it’s more accurate to measure energy in Joules, as we were taught in school, but historically a unit of measurement has taken root kWh. It is necessary to write with a point, such as the total electric power is measured in VA.
Often spelled incorrectly - kWh, kWhor even just kW. Such confusion could not have occurred if a unit had been invented for a unit of electrical energy. For instance, Electrojoule. Or they would be named after some other scientist.
And accounting and indication of these "Electrojoules" is realized by means of simple electrical transformations and devices. Consider them below.
How is the electric meter
The device of a single-phase electric meter of direct connection of the Energomer will now be clearly visible in the photographs. I remind you that its appearance is in the first photo of the article.
I got a working meter, they gave it to me, because where it stood, the owner of the room changed, and the new owner was obliged to change the meter.
The meter usually has 2 seals, one protects the meter terminals from unauthorized access, and the second protects the meter’s electronic circuitry. These seals on my counter are gone.
Let's consider more in detail terminals.
The clamping terminals hold the stripped wire well along its entire length.
Maybe it will be interesting:
Now the most interesting part is opening the counter case:
Energy meter tse6807p. Front panel removed
Energy meter counter. The removed cover, photo 2
We get the guts of the insides, and we see that the circuit of the electric meter consists of three main parts:
This is 1) a stepper motor, on the axis of which the digits are fixed, 2) a board with a controller and 3) input terminals. As you can see, everything is Chinese (I hope, except for the terminals), therefore the price of such a counter is 650-750 rubles.
By the way, I did not see it, but in Mercury the production of components is Russian. Who will confirm?
Terminals and board with controller. Everything is upside down, so the phase terminals of the meter are on the right, zero terminals on the left, not as we used to see.
White and green wires are the output of the measuring shunt. The same shunt on which the voltage "proportional" is proportional to the current through the phase terminals. This voltage is supplied to the inputs of the board KT1 and KT2 and fed to the controller for processing.
Also, the power for the controller is taken from the phase terminal, this is yellow wiring. Power - transformerless, through a capacitor, rectifier and stabilizer 5VDC.
The zero terminal is used to take the second pole to power the meter. And also in order to provide a connection, and to limit the malicious schemes of turning on the counter.
From the output of the controller board through points M1.1 and M1.2, pulses are sent to the stepper motor. The one that is braked with a magnet. The pulse frequency is proportional to the current, and is additionally indicated by an LED.
About the stepper motor is described in my blog post in the pro article.
This LED is used to check and verify the counter. Count the number of pulses in (for example) 5 minutes, and look at the correct readings on the front panel.
A program is programmed in the controller that generates pulses for the operation of the stepper motor.
By the way, the program can be changed, craftsmen do it. Thus, you can reduce the counter by 30 - 50%.
Here is a photo of the counter printed circuit board a little larger:
What are the parts of the counter circuit
As you can see in the photo, the circuit of the electric meter Energomer is very simple, the basis of the circuit is a microcontroller that controls everything.
The details are poorly visible in the photo, so I rewrote some of the denominations.
Stepper motor (recorder):
Step counter recorder. You can buy one through the Chinese site meter-counters.com. It is this recorder that magnetizes and stops the counter.
- 5 Volt Stabilizer 7805,
- Pic controller MPC 3905A,
- Opto-isolation for telemetry access (remote reading) PC817C,
- Quartz at 3.579545 MHz.
Instructions for the meter Energomer
Below is the instruction for the counter Energomera TsE6807, which is considered in the article. It contains all the parameters, the connection diagram, as well as the device and the principle of operation of the meter according to the manufacturer.
There was also a piece of paper to correctly write testimony:
According to the rules, a figure indicating fractions of a kilowatt hour must be highlighted graphically. Which is done, see the photo of the counter in the case.
Energomer meters are widely used by professionals and installed in buildings for various purposes. These devices have high-quality conductive networks, clamping terminals and a reliable housing. Different models of meters are presented on the market: both single-phase and multiphase with different tariffs.
Electric meter Energomer CE 102: instruction manual
Electric meter Energomen CE 102 is a single-phase multi-tariff system. It allows you to take readings at night and day rates. Consumption information is indicated on the instrument panel.
The counter reads down to the point with a dot or comma.
Counters of the CE-102 series are presented in several configurations of execution. Models differ in body type and distinguish: S6, S7, R5 and R8. In numbers, the name of the models is distributed as 145, 245, 148, 248.
Reading options:
- When using automatic mode, all data is displayed on the scoreboard sequentially or with a small interval.
- In manual mode, you will need to use a special control button. Depending on the model of the device, the system may have a FRAME or PRSM button.
For greater convenience, in the counters of this series, all data is divided into groups. Each of them contains its own data. The transition between groups is delayed by pressing the test button, and with a short press, you can check the indicators within the group.
Features of the electric meter Energomer TsE6803V: characteristic
The model of the Energy Meter ЦЭ6803В has only slight differences from other options. But there are certain features of the design and execution of the device. Data accounting occurs due to the multiplication of voltage and input force, creating pulses. The pulse frequency will be matched with the input power. The pulses are summed using a microprocessor or an electromechanical counter. It is these data that are shown on the counter display.
There are certain design differences in the model ЦЭ6803В. So the device can be connected to the test devices through the terminal box. For this, separate terminals are inserted. Also, this model has a memory that is independent of the power supply.
In the event of a power outage, the meter will display the necessary consumption data, time and date.
On the front of the case there are 2 indicators. The first indicator “Network” lights up green when connected to the mains. Otherwise, the load indicator flashes. In this case, it is necessary to determine the cause of the breakdown, but it is better to immediately send the meter for repair.
Technical characteristics of the energy meter TsE6803V:
- The frequency of changes in the network is 50-60 Hz;
- The first or second class of accuracy;
- The mechanism complies with state standards;
- The mechanism will last 30 years.
Verification of the device is carried out immediately after its manufacture, after repair work, and every 16 years during operation. On average, a meter can run smoothly for 30 years. Due to its low cost, the CE6803V model is popular among consumers. The device comes with a 4-year warranty.
Characteristics of the energy meter Energomera CE 101
Energy meter CE 101 is a single-rate and single-phase device. It is used to measure current activity in single-phase circuits. The current sensor is a shunt. The device is mounted on a TN-35 rail.
Technical features of the CE 101 device:
- It requires little energy for own work;
- The design has a standard and optical output;
- The presence of a light indicator;
- Increased protection against theft;
- The current is measured using a shunt;
- The presence of a mechanical or electronic type adder;
- Design stability to adverse conditions.
This device is capable of operating 160,000 hours of failure. Every 16 years, the device is checked for operability. In general, the counter will last 30 years. The manufacturer provides a 5 year warranty. The device has a first accuracy class. The mains frequency is 50 Hz, and the base voltage is 230 watts. The main and largest currents are 5 and 10 A, respectively.
Energy meter tse68038: how to take readings from the device
Model ЦЭ68038 refers to three-phase meters. This is a single tariff design. Readings are taken from the electromechanical display. Housing types in the meter may vary. So distinguish 6 and 7 digits for the scoreboard. In addition, the panel is divided into electronic and mechanical.
To take readings from the counter, you need to pay attention to the scoreboard. The last digit should be framed by a frame or comma. It is not taken into account when taking indicators.
To determine the amount of energy consumption per month, it is necessary to subtract the number of kilowatts for the last month from the current result.
If there is no designation for the last digit, then all the numbers on the scoreboard are taken into account. On electronic models, a dot is used instead of a comma. We write down all the numbers to the point.
Connection sequence of the CE6803V direct connection meter
After purchasing the meter, it is necessary to mount it correctly. The installation process does not have certain difficulties. There are several ways to connect, depending on the electrical installation.
Three-phase meter connection options:
- Direct connection;
- By current transformers;
- Using transformer devices and measuring transformers.
All options differ only in the presence of transformer indicators. For the home, a direct connection scheme is usually used. These models have current limits of 100 A.
There are 8 contacts in the terminal block. There are certain differences in the number of phases. To connect the device to a four-wire network, remember that an input mechanism is installed in front of the meter. After the counter, power is supplied by group single-pole circuit breakers. This option is suitable for a summer house or a country house.
What is an energy meter counter (video)
The energy meter of the Energomer is highly reliable. It’s not so easy to wind up readings from models. For proper installation and operation, special instructions are used, indicated in the device passport. The connection process itself is straightforward.
\u2060 Energy meter Energomera CE 101 S6 (100A) with remote control
Our online store offers to buy a "charged" meter with an Energomera CE101 remote control. This single-rate single-phase meter has been improved to completely or partially turn off the metering of electric energy.
The remote control has 4 main modes (standard, 100%, 75% and 25% of underestimation) and in addition you can manually set the required percentage. Our revision of the counter is to install a small board in the internal mechanism of the device. It is this chip that gives the signal when you need to turn on one or another mode. This microcircuit cannot be detected by ordinary checks, only if you disassemble the device. Ordering a counter with a remote control from us is also beneficial because we give a guarantee for each device - 1 year. Before sale, each device passes a performance test.
The principle of operation of a single-phase electric meter Energomera CE101 S6 145 M6.
It lies in the fact that the incoming current and voltage indicators are multiplied by the sigma-delta modulation method and then converted into a pulse system, which is proportional to the input power. The received pulses using the microcontroller go through the stage of summing and identifying indicators of consumption of active electrical energy. And finally, the data measured in kW / h are displayed on the dial of the electromechanical device.
Main features of the energy meter Energomera SE-101:
- the counter is issued strictly according to GOST of Russia 52320-2005 and according to GOST of Russia 52320-2005;
- this model has passed certification and standardization procedures related to measuring instruments and is included in the State Register of Measuring Instruments of the Russian Federation;
- minimum power consumption of the meter itself;
- reinforced terminal group, due to which the meter is able to keep track of current up to 100 Amps;
- LED indicator signaling the operation of the device;
- the presence of a shunt as a current meter;
- meets the requirements for climatic and mechanical influences;
- intertesting interval - 16 years;
- manufacturer's warranty - 5 years from the date of manufacture of the device.
It is possible to buy an energy meter of Energomera CE 101 S6 with a remote control at the indicated phone number: 8-920-01-02-111. If you have questions about metering devices, then contact us and we will answer them. We also have free delivery by courier who can connect the meter and demonstrate its operation.
The price of the Energomera CE 101 electric meter with a remote control is 6.000 rubles for the whole set.
Technical parameters of the energy meter Energomera CE 101 S6
| Product Feature | Value and Unit |
|---|---|
| Manufacturer model | Energomera CE 101 S6 |
| Number of phases | single phase |
| Rated voltage | 230 volt |
| Maximum allowable mains voltage | 265 volt |
| Minimum allowable mains voltage | 173 volts |
| Rated current | 5 Amp |
| Maximum network current | 100 amp |
| Minimum (starting) current in the network | 10 mA |
| Rated frequency of a network | 50 Hz (+/- 2.5Hz) |
| Instrument accuracy class | 1,0 |
| Maximum number of tariffs | single rate |
| Display device | six-drum electromechanical device |
| Active power consumption of each parallel counter circuit | 0.8 watts |
| Total power consumption of each parallel counter circuit | 9 Volt-Ampere |
| Measured resource | active electricity |
| Communication device | not provided |
| Temperature operating conditions of the meter | -40 to +70 ° C |
| Factory test counter operation | 220,000 hours |
| Installation method | to DIN rail |
| Anti-reverse function | the design of the device provides |
| Recommended Service Life | 30 years |
| Intertesting interval | 16 years from the date of production |
| The device signaling the connection of the meter to the network | red LED indicator |
| Type of terminals | screw terminals |
| Counter Case Material | plastic |
| Body color | beige |
| Instrument Dimensions | width: 89 mm., height: 110 mm., depth: 72.5 mm |
| Total weight with packaging | 378 gr. |
Wiring diagram of the energy meter CE 101 S6
Something became boring, and decided to also be noted at the competition. :)
This time we analyze the operation of the electric energy meter ENE ***** RA CE *** 101 for vulnerabilities from outside interference. I must say right away that the article is intended solely for educational purposes, and the employees of the relevant services can help in catching scammers, so to speak :).
So let's get started. The counter indicated above is assembled on a chip unknown to anyone (except for developers), about which, accordingly, there is nothing in the net, but this should not stop us in the way of learning :).
Investigating the operation of the device by connecting a 1-3KW load to it, we find out that the microcircuit on its 22nd leg flashes an LED (which is displayed on the front panel) and another one in the optocoupler transmits a signal to specially derived terminals for taking readings by electricians (using some kind of instrument) . Every 16 blinks inside this infernal chip something works and it switches the counting mechanism to one position.
device diagram
The mechanism considers only one way, respectively, so that it will not work to twist the readings without parsing it. The device rotates the mechanism (something like a biphasic stepper motor). It has two outputs, if +5 is applied to one, and 0 to the other, the mechanism will take a step forward to take another step, the voltage (outputs) must be interchanged. So the outline was drawn. We take control, we will use the ATTINY13 controller.
We disconnect terminal 22 of the microcircuit from resistor R26 and connect to terminal 7 of the controller, connect resistor R26 to terminal 5 of the controller. Next, restart the two tracks going to the counting mechanism and connect the legs 2 and 3 of the controller with the control of the counting mechanism. The common wire is not difficult to find, the whole circuit is powered by the built-in 78l05 stabilizer.
Here is such a simple program sewn into the controller:
#include
#include
#define INPUT PINB.2
unsigned int code;
unsigned char k_div, / * k_div_tmp, * / fr, out, cnt;
// External Interrupt 0 service routine receive command from IR remote control unit
//**********************************************************************************
interrupt void ext_int0_isr (void)
(unsigned char ppp, pin;
unsigned int tmp, tout;
GIMSK \u003d 0;
tmp \u003d 1;
for (ppp \u003d 1; ppp<14; ppp++)
(delay_us (1200); // was 1200
pin \u003d PINB.1;
for (tout \u003d 700; tout\u003e 0; tout--)
if (pin! \u003d PINB.1) break;
if (tout \u003d\u003d 0) (GIMSK \u003d 0x40; // timeout
GIFR \u003d 0x40;
return;);
tmp \u003d tmp<< 1;
if (! PINB.1) tmp ++;
};
tmp & \u003d 0x000F;
code \u003d code<< 8;
code & \u003d 0xFF00;
code \u003d code + tmp;
if (code \u003d\u003d 0x0209) k_div \u003d 254; // Save 50% energy
if (code \u003d\u003d 0x0305) k_div \u003d 252; // save 75% energy
if (code \u003d\u003d 0x0402) k_div \u003d 248; // save 87.5% energy
if (code \u003d\u003d 0x0507) k_div \u003d 255; // normal mode NO SAVE
GIFR \u003d 0x40;
GIMSK \u003d 0x40;
}
interrupt void timer0_interrupt_subroutine (void)
{
cnt--;
TCNT0 \u003d k_div;
PORTB.0 \u003d 1; // LED ON
if (cnt \u003d\u003d 0)
(cnt \u003d 16;
PORTB.3 \u003d out & 0x01;
PORTB.4 \u003d ~ out & 0x01;
out \u003d ~ out;
};
delay_ms (250);
PORTB.0 \u003d 0; // LED OFF
PORTB.3 \u003d 0; // MOTOR DRIVE OFF
PORTB.4 \u003d 0; // MOTOR DRIVE OFF
}
// Declare your global variables here
void main (void)
{
// Declare your local variables here
// Input / Output Ports initialization
// Port B initialization
// Func4 \u003d In Func3 \u003d In Func2 \u003d In Func1 \u003d In Func0 \u003d In
// State4 \u003d T State3 \u003d T State2 \u003d T State1 \u003d T State0 \u003d T
PORTB \u003d 0x00;
DDRB \u003d 0x19;
// Timer / Counter 0 initialization
// Clock source: System Clock
// Clock value: 1000,000 kHz
TCCR0B \u003d 0x07; // External pin T0 is activated, on RISING edge
TCNT0 \u003d 0x00; // Clear timer counter
// External Interrupt (s) initialization
// INT0: On
// INT0 Mode: Rising Edge
GIMSK \u003d 0x40;
MCUCR \u003d 0x02;
GIFR \u003d 0x40;
// Timer (s) / Counter (s) Interrupt (s) initialization
TIMSK0 \u003d 0x02; // TOIE - on
// Global enable interrupts
#asm ("sei")
if (fr! \u003d INPUT) fr \u003d INPUT;
k_div \u003d 255;
// k_div_tmp \u003d 1;
PORTB.3 \u003d 0;
PORTB.4 \u003d 0;
out \u003d 1;
cnt \u003d 16;
PORTB.0 \u003d 1;
delay_ms (500);
PORTB.0 \u003d 0;
delay_ms (500);
PORTB.0 \u003d 1;
delay_ms (500);
PORTB.0 \u003d 0;
TCNT0 \u003d 255;
while (1)
{};
}
The program counts the number of pulses received from the pin. counter chips and, depending on the settings, controls the counting mechanism. Installation is made by the IR remote control standard RC5. In the program text, the codes on the remote control are highlighted for setting the energy saving mode. Accordingly, code 29 - takes into account 50% of pulses, code 35 - takes into account 25% of pulses, code 42 - takes into account 12.5% \u200b\u200bof pulses and code 57 - takes into account all pulses, just like without a device. When you turn on the device is in this mode, respectively, if you restart the controller (turn off and turn on the machines), the device will take into account all the pulses.
To reduce the readings, there is another vulnerability - a quartz resonator. It can be set to a lower frequency, but this aspect of the counter has not been tested.
It's all...
Files:
ID: 1983
The need for a new counter may arise in different cases:
- Replacing an old model that does not meet modern requirements of oblenergo.
- There was a need for multi-tariff electricity metering.
- 380 volts were brought to the house.
- Moving the device to another place.
- The old appliance broke.
Whatever the reason, but the essence is the same - you need to connect a new device. Can an electric meter be installed independently? Yes, but under certain conditions.
Who understands this
It’s worth mentioning right away that in different cities there may be different requirements, or rather, there are one requirement, but the approach to their execution and verification of work performed may differ depending on the city of residence. What to do in this case? How to connect?
Replacement of the device can be carried out by a professional electrician, having a tolerance of at least 3 electrical safety groups.
First of all, it is necessary to obtain accurate information in the power supply about who can perform such work. Most often, there are no problems with this, but in some cases, energy sales require that the connection and sealing is carried out by the company representative - the controller. If these requirements are not taken into account, then you will have to prove and uphold your case in court.
Whatever decision is made on the water of the one who will install the new device, no one has been made; for someone who decides to break the seals on their own, it is fraught with large financial costs for paying a fine. In addition, if the absence of a seal is detected, then you will not be able to prove that this has just been done. In this case, they may say that the seal was broken in order to stop, and the cost of the “stolen” electricity will be added to the amount of the fine.
Types of Counters
We will not dwell on the device and the principle of its operation, since it is precisely this that few people are interested in. Consider the types of modern appliances, because then you will most likely have to purchase it for your money.
Single Phase Electronic Power Meter
Single-phase can be divided into 2 types of display readings:
- With LCD display.
- With wheels on which there are numbers.
Here, as in the old rule: "The amount does not change due to a change in the places of the terms." To put it more clearly, we can say that the devices differ only in the way they display data, but since electronic devices with an electromechanical counter are cheaper, there is more demand for them. If you live in a private house or apartment, and you need to put a new one instead of the old one, then this is the best option. Choosing a model is a matter of convenience and personal desires.
Multi-rate counter
If you plan to use electricity intensively at night, you can consider the option of purchasing a multi-tariff device. Now it is possible to connect:
- two-rate;
- three-rate.
What is their difference? Two-tariff takes into account day and night energy consumption. This expense is charged at different prices. You need to pay less for energy consumed at night. Accounting is from a certain time, and not from whether it is light on the street or dark.
Three-tariff works according to the same principle, only the time of day is divided into several time intervals:
- night (lowest cost);
- peak load on the power grid (highest cost);
- day (average price).
The device is expensive, besides it needs to be programmed, which also costs money. In conditions of normal electricity consumption, it is of little use. If there is no large night consumption of electricity, then in the end you can pay even more than with the same energy consumption, taken into account by a single tariff device.
Three phase meter
The name already speaks for itself. In addition, this device is designed to account for the amount of energy consumed by a voltage of 380V. For domestic needs it is not worth buying.
If you need to install a three-phase, you can watch the training video at the end of the article.
Standard marking
On the box and front panel are the parameters:
- Working voltage.
- Power.
- Accuracy class.
As for voltage, there are no additional questions - you need 220 or 380 volts. The power of the device is usually more than enough for domestic needs, even for working with a welding machine. If we talk about the accuracy class, then this figure should not be more than 2, otherwise the meter will not be connected to you, because these are the minimum requirements. The smaller the number, the higher the accuracy of the purchased device.
What to look for when buying
Today you can purchase counters of various companies, but it is preferable to opt for domestic products and there are a number of reasons for this:
- There are good and high-quality imported electric meters, but they may not be designed for our conditions, and, for example, can not withstand the power surge, because in civilized countries there is simply no such disgrace. Warranty service will be refused to you, due to "non-compliance with operating conditions", and then you will have to pay your own for the repair of this imported equipment, and there will be no guarantee that this will not happen again. If you want to purchase only imported, then find out how it is adapted to our conditions.
- A Chinese product can also be attributed to import. It’s worth mentioning right away that in fact, Chinese products are of high quality and are in demand in many countries, but this only applies to factory-made, certified products. We also get products intended for backward countries - cheap and low-quality. You can buy a branded Chinese device on the market, and then in the workshop they will say that there are no spare parts for it, since it was assembled from unknown source.
- Pay attention to the date of manufacture (or verification). It may happen that instead of connecting and sealing you may be forced to hand over the device for verification, since it has been in the warehouse for more than a year.
- Way of fastening. The fastening may differ - on a dinray or with screws to the surface. When choosing a shield (or counter for a shield), this must be taken into account. Some units are equipped with additional devices that allow you to install the device on any surface.
It is recommended that there be a voltage monitoring relay nearby, with which you can protect not only light bulbs, but also many other electrical appliances. According to unofficial statistics, in 90% of cases of failure of household appliances, the cause of the breakdown is a power surge.
Connection work
Dismantling the old device is not difficult, but, as we have said, without the permission of the seal can not be removed. You need to turn off the power of the apartment. Then unscrew the bottom cover, and loosen the tightening screws, remove the wires.
Residents of private homes may have to perform live installation of the appliance, as the wiring goes directly from the pole.
What trouble can you face right away? Removing the counter, you will most likely find an old, worn out aluminum wiring. If this is exactly what happened, then it needs to be replaced. If the wiring is old, then it no longer meets modern requirements, and it must be replaced with a new, larger cross-section. The wire is not laid at an angle, but only horizontally and vertically.
Now no one is installing devices on a wooden shield (and on a metal one, an old model, too). Modern guards have a seat for installing the guard and machines. The shield itself, if it interferes or spoils the appearance of the room, can be mounted in the wall. In the photo you can see how this is done on the example of Mercury. It is quite clear that under it it will be necessary to prepare a place. It is also necessary that the meter be at such a height that it is convenient to take readings. It is worth to make a mistake once, and then constantly substitute a chair under your feet.
If the house has an electric stove, then it is necessary to draw a separate line of the corresponding power and a ground wire from the shield, connecting it to the contact plate and to the shield if its case is metal. In addition to the electric stove, many more modern household appliances need grounding. If the wiring changes, then you need to take care of this in advance.
Now the turn of the meter. It needs to be fixed in the shield, depending on the method of attachment (as mentioned above). Further, according to the scheme attached to the documentation, the wiring is connected. The wires must be clamped well, but not squeezed, since such actions can lead to its crushing and breakage. The outgoing phase wire is connected to the machines.
If the shield body is metal, then it must also be connected to the grounding wire. Typically, product designers take care of this.
When installing the meter in a common corridor, it is not necessary to install a shield for electrical equipment, since it is mounted in a common panel room. When located outside the living area, an indoor electrical panel with automatic devices is installed.
After completing the installation and checking that the wires are not closed anywhere, you can test the assembled system.
Video
This video shows the installation and connection of a single-phase single-tariff single-meter energy meter Energomer CE101 R5:
Watch the training video for connecting the three-phase single-rate energy meter of the Energomer TsE6803V.