CONFIGURABLE ELECTRIC ENERGY COUNTER

专利摘要:
Counter configurable according to a first configuration in which the meter is adapted to be directly connected to a phase conductor (40), and in a second configuration in which the meter is adapted to be connected to the phase conductor (40) via a transformer ( 41), the counter comprising an upstream current port (2a, 2c, 2e) and a downstream current port (2b, 2d, 2f), a voltage port (3), a closed circuit breaker (7) , and an access port through which extends a conductive element of an adaptation module when it is mounted on the meter, so that when the adaptation module is mounted on the meter, the conductive element opens the circuit breaker while being connected with the voltage port, the counter then being in the second configuration, and when the matching module (24) is not mounted on the meter, the counter is found in the first configuration. Adaptation module. System comprising a counter and an adaptation module. Method of configuring a counter
公开号:FR3054322A1
申请号:FR1656978
申请日:2016-07-21
公开日:2018-01-26
发明作者:Henri TEBOULLE；Stephane Hergault
申请人:Sagemcom Energy and Telecom SAS；
IPC主号:

专利说明:

(54) CONFIGURABLE ELECTRICAL ENERGY METER.
©) Counter configurable in a first configuration in which the counter is adapted to be connected directly to a phase conductor (40), and in a second configuration in which the counter is adapted to be connected to the phase conductor (40) transformer (41), the meter comprising an upstream current port (2a, 2c, 2e) and a downstream current port (2b, 2d, 2f), a voltage port (3), a closed circuit breaker (7) by default, and an access port through which extends a conductive element of an adaptation module when the latter is mounted on the meter, so that, when the adaptation module is mounted on the meter , the conductive element opens the circuit breaker while being connected with the voltage port, the counter then being in the second configuration, and when the adaptation module (24) is not mounted on the counter, the counter is in the first configuration. Adaptation module. System comprising a counter and an adaptation module. Method of configuring a counter.
The invention relates to the field of electric energy meters.
BACKGROUND OF THE INVENTION
There are conventionally two types of electrical energy meters intended to measure the consumption of electrical energy supplied by a distribution network to an electrical installation.
First meters are intended to be connected directly to one or more phase conductors of a distribution network, on which currents typically flow from a few tens of amperes at voltages of a few hundred volts.
Second meters are intended to be connected to one or more phase conductors of a distribution network, over which currents typically of several hundred amperes circulate, via one or more transformers located on the phase conductors. These transformers typically have a transformation ratio of between 100 and 1000.
Connection to the distribution network via transformers requires the design of second meters different from the first meters. The second counters in particular have mechanical interfaces and ports for connection to the phase conductors different from those of the first counters. It is therefore necessary to design, qualify and manufacture two different types of meters, which increases the cost of each type of meter.
OBJECT OF THE INVENTION
The object of the invention is to reduce the cost of an electric meter.
SUMMARY OF THE INVENTION
With a view to achieving this goal, an electric energy meter is configured which can be configured according to a first configuration in which the meter is adapted to be connected directly to a phase conductor of a distribution network, and according to a second configuration in the counter is adapted to be connected to the phase conductor via a transformer located on the phase conductor, the counter comprising an upstream current port and a downstream current port intended to be connected to the phase conductor, a voltage port, a circuit breaker closed by default comprising a movable contact having a fixed end connected to the voltage port and a movable end connected to the upstream current port when the circuit breaker is closed, a reception device adapted to accommodate a module adaptation, and an access opening through which extends a conductive element of the adaptation module when the latter is mounted on the counter, so that, when the adaptation module is mounted on the counter, the conductive element is in contact with the movable contact of the circuit breaker and opens the circuit breaker while being connected to the voltage port, the counter then found in the second configuration, and when the adaptation module is not mounted on the counter, the counter is in the first configuration.
The meter according to the invention is therefore suitable for operating either by being directly connected to the phase conductor of the distribution network, or by being connected to the phase conductor via a transformer located on the phase conductor. These two modes of connection to the distribution network therefore require only one type of meter, which significantly reduces the costs of development, testing and manufacturing of the meter. The configuration of the meter is simple and inexpensive to perform, since it consists only in mounting the adaptation module on the meter.
The invention also relates to an adaptation module adapted to configure a counter such as that which has just been described.
The invention also relates to a system comprising a counter and an adaptation module.
The invention also relates to a method for configuring such a counter.
The invention will be better understood in the light of the following description of a particular non-limiting embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
It will be done reference to the attached drawings, among which : the figure 1 is a inside view of a counter according to the invention; figure 2 is a view of over the counter according to
the invention, the adaptation module not being mounted on the meter;
Figure 3 is a bottom view of a fixed base of the meter according to the invention;
FIG. 4 represents the adaptation module mounted on the meter according to the invention, the adaptation module being seen from the front;
Figure 5 is a view similar to Figure 4, the adapter module being viewed from above;
FIG. 6 is an electrical diagram equivalent to the meter according to the invention connected directly to phase conductors of a distribution network;
FIG. 7 is an electrical diagram equivalent to the meter according to the invention connected via transformers to the phase conductors of a distribution network.
DETAILED DESCRIPTION OF THE INVENTION With reference to the figures, the invention relates to an energy meter 1, which is here a three-phase meter.
The counter 1 comprises a first upstream current port 2a, a first downstream current port 2b, a first voltage port 3a, a second upstream current port 2c, a second downstream current port 2d, a second voltage port 3b, a third upstream current port 2e, a third downstream current port 2f, a third voltage port 3c, a first neutral port 4a, and a second neutral port 4b.
While the current ports 2 and the neutral ports 4 are accessible directly from outside the counter 1 to be connected to a distribution network 6, the voltage ports 3 are ports internal to the counter 1 and are not accessible from outside counter 1.
The counter 1 further comprises a first circuit breaker 7a, a second circuit breaker 7b and a third circuit breaker 7c. The first circuit breaker 7a is connected between the first upstream current port 2a and the first voltage port 3a. The second circuit breaker 7b is connected between the second upstream current port 2c and the second voltage port 3b. The third circuit breaker 7c is connected between the third upstream current port 2e and the third voltage port 3c.
Each circuit breaker 7 is normally closed. Each circuit breaker 7 comprises a movable contact 8 made of copper having a fixed end connected to the associated voltage port 3 and a movable end connected to the upstream current port 2a, 2c, 2e associated when the circuit breaker 7 is closed.
The counter 1 further comprises processing means and measuring means. The processing means comprise a processing module, here a microcontroller 9. The measurement means comprise an analog-to-digital converter 10 connected to the microcontroller 9, a first current sensor 12a connected to the first upstream current port 2a and to the first current port downstream 2b, a first voltage sensor 13a connected to the first voltage port 3a (and therefore to the movable contact 8 of the first circuit breaker 7a), a second current sensor 12b connected to the second upstream current port 2c and to the second port of downstream current 2d, a second voltage sensor 13b connected to the second voltage port 3b (and therefore to the movable contact 8 of the second circuit breaker 7b), a third current sensor 12c connected to the third upstream current port 2e and to the third port downstream current 2f, a third voltage sensor 13c connected to the third voltage port 3c (and therefore to the movable contact 8 of the third circuit breaker 7c).
Each current sensor 12 is connected to an upstream current port 2a, 2c, 2e by a first copper arm 16 and to a downstream current port 2b, 2d, 2f by a second copper arm 17. Each current sensor 12 comprises an internal transformer 18 in the form of a torus mounted respectively between the upstream current port 2a, 2c, 2e and the downstream current port 2b, 2d, 2f, and a resistor 19 mounted in parallel with the internal transformer 18. The internal transformer 18 provides galvanic isolation. The internal transformer 18 here has a transformation ratio equal to 2500. The resistor 19 has a terminal connected to an input of the analog-digital converter 10 and a terminal connected to the first neutral port 4a of the counter 1 (and to a ground of the counter 1 The resistor 19 transforms the current flowing in the internal transformer 18 into a voltage. The analog-digital converter 10 measures an image voltage of the current flowing respectively between the upstream current port 2a, 2c, 2e and the downstream current port 2b, 2d, 2f.
Each voltage sensor 13 has a first resistor 20 and a second resistor 21. The first resistor 20 has a terminal connected to the associated voltage port 3 and a terminal connected to a terminal of the second resistor 21. The other terminal of the second resistor 21 is connected to the first neutral port 4a. The terminals of the first resistor 20 and of the second resistor 21 which are interconnected are also connected to an input of the analog to digital converter 10. The first resistor 20 and the second resistor 21 play the role of a voltage divider which brings back the voltage at the voltage port 3 at an acceptable level for the analog digital converter 10. The analog digital converter 10 measures an image voltage of the voltage of the voltage port 3.
The microcontroller 9 acquires the current measurements and the digital voltage measurements produced by the analog digital converter 10, and performs a processing on the current measurements and the digital voltage measurements to obtain measurements corresponding to the currents and voltages actually present on the distribution network 6.
The counter 1 further comprises a fixed base 23 made of plastic, a reception device adapted to accommodate an adaptation module 24, and a detector adapted to detect whether the adaptation module 24 is mounted or not on the counter 1.
The counter 1 includes a removable cover (not shown) which protects access to the connectors. The removable cover, when mounted on the counter 1, is positioned on a front face of the counter 1 (that is to say on a face opposite to a face of the counter 1 intended to be fixed to a wall). The removable cover allows access to the interior of the counter 1, in particular during the manufacture and of the test phases of the counter 1. It is of course possible to close the removable cover irreversibly (the removable cover can be sealed at counter 1 when it is installed).
The fixed base 23 has a first access port 25a, a second access port 25b and a third access port 25c. The access openings 25 connect the outside of the counter 1 to the inside of the counter 1.
Each access hole 25 has a plastic guide 33 which extends perpendicular to an internal face 27 of the fixed base 23. The access holes 25 are positioned so that the first access hole 25a opens into the counter. 1 opposite the movable contact 8 of the first circuit breaker 7a, the second access port 25 opens into the counter 1 opposite the movable contact 8 of the second circuit breaker 7b, and the third access port 25c opens into the counter 1 opposite the movable contact 8 of the third circuit breaker 7c.
The reception device of the adaptation module comprises a cavity 28 formed on the fixed base 23, the access orifices 25 themselves, as well as latching means formed on the fixed base 23.
The adaptation module 24, meanwhile, comprises a housing 30, a first conductive element 31a, a second conductive element 31b and a third conductive element 31c. Each conductive element 31, of longitudinal shape, is surrounded by a cylindrical guide 33 made of plastic.
The housing 30 is of generally parallelepiped exterior shape. The bottom of the housing 30 has a shape complementary to the cavity 28 of the reception device, so that the housing 30 of the adaptation module can come to fit in the fixed base 23. The housing 30 further comprises a device for fixing, in this case comprising latching means 32, formed on the lateral faces of the housing 30. When the adaptation module 24 is mounted on the counter 1 and the housing 30 is fitted into the fixed base 23, the latching means 32 of the housing 30 cooperate with the latching means of the fixed base 23 to fix the housing and therefore the adaptation module 24 to the fixed base 23 of the counter 1.
Each conductive element 31 comprises a conductive rod 35 which comprises at a first end a connection member 36 and which has a second enlarged end 37.
The conductive elements 31 (and the cylindrical guides 33) extend from the housing 30 and protrude from the housing 30 so that, when the housing 30 is fitted into the fixed base 23, each conductive element 31 (and its cylindrical guide 33 ) extends into an access hole 25. When the conductive elements 31 are introduced into the access holes 25, the second enlarged end 37 of the conductive rod 35 of each conductive element 31 comes into contact with the movable contact 8 of a circuit breaker 7, and opens the circuit breaker 7 while remaining in contact with the movable contact 8. The conductive rod 35 and therefore the connection member 36 are thus connected with the associated voltage port 3. When the conductive element 31 is fully inserted, the second enlarged end 37 forms a latching member which cooperates with a latching member complementary to the counter 1 to snap the conductive element 31 into the counter 1.
The detector of the counter 1, adapted to detect whether the adaptation module 24 is mounted or not on the counter 1, comprises a push button connected to the microcontroller 9. When the adaptation module 24 is mounted on the counter 1, a pin plastic formed on the adaptation module 24 comes to press the push button. The microcontroller 9 thus detects that the adaptation module 24 is mounted on the counter 1.
The counter 1 is a configurable counter according to a first configuration, in which the counter 1 is adapted to be connected directly to the phase conductors 40 of the distribution network 6, and according to a second configuration, in which the counter 1 is adapted to be connected to the phase conductors 40 of the distribution network 6 via transformers 41 located on the phase conductors 40.
In the first configuration, the adaptation module is not mounted on the counter 1. In the second configuration, the adaptation module 24 is mounted on the counter 1.
The configuration of the counter 1 therefore consists first of all in determining whether the counter 1 is intended to be connected directly to the phase conductors 40 of the distribution network 6, or else whether the counter 1 is intended to be connected to the phase conductors 40 via the transformers 41 located on the phase conductors 40. Then, if the counter 1 is intended to be connected to the phase conductors 40 via the transformers 41, the configuration of the counter 1 consists in mounting the adaptation module 24 on the counter 1.
The configuration of the counter 1 can be carried out in the factory, after the manufacture of the counter 1 and before the delivery of the counter 1 to the electrical energy distributor. The configuration of the counter 1 can also be carried out by the electrical energy distributor counters itself, which 1 are similar.
thus manages a single stock of The electric power distributor then configures the meters 1, prior to their installation, according to the required configuration.
We will now describe in more detail how the counter 1 is connected to the distribution network 6, depending on whether the counter 1 is connected directly to the distribution network 6 or else via the transformers 41.
When the counter 1 is intended to be connected directly to the distribution network 6 which supplies electrical energy to an electrical installation 42 of a customer, the adaptation module 24 is not mounted on the counter 1, and the counter 1 is found in the first configuration.
This situation is visible in FIG. 6. The phase conductors 40 of the distribution network 6 do not include a transformer.
The first upstream current port 2a of the counter 1 is connected to a first phase conductor 40a of the distribution network 6 upstream of the counter 1, while the first downstream current port 2b is connected to the first phase conductor 40a downstream of the counter 1. The first cut3054322 ίο circuit 7a is closed. The first current sensor 12a measures the current which flows between the first upstream port 2a and the first downstream port 2b, and therefore the current which flows on the first phase conductor 40a. The first voltage sensor 13a, connected to the first voltage port 3a and. therefore to the first upstream current port 2a via the movable contact 8 of the first circuit breaker 7a (which is closed). The first voltage sensor 13a therefore measures the voltage on the first phase conductor 40a upstream of the counter 1.
All of this also applies to the second phase conductor 40b (with the second current sensor 12b and the second voltage sensor 13b) and to the third phase conductor 40c (with the third current sensor 12c and the third voltage sensor 13c).
The first neutral port 4a (which is equipotential to the second neutral port 4b, the internal copper bar being the same for the first neutral port 4a and for the second neutral port 4b) of the counter 1 is connected to the neutral conductor 43 of the distribution network 6. The second neutral port 4b is connected to a ground in the customer's electrical installation 42.
As the adaptation module 24 is not mounted on the counter 1, the detector does not detect the presence of the adaptation module 24. The microcontroller 9 therefore performs a first processing using first parameters on the current and voltage. In particular, the first processing takes into account the fact that the counter 1 is connected directly to the distribution network 6, and not via transformers, to obtain measurements corresponding to the currents and voltages actually present on the distribution network 6.
When the counter 1 is connected to the distribution network 6 via the transformers 41, the adaptation module 24 is mounted on the counter 1, and the counter is in the second configuration. This situation is visible in FIG. 7. The counter 1 presented in FIG. 7 is the same, in terms of hardware (hardware) as the counter 1 presented in FIG. 6 (except that the adaptation module 24 is here mounted on the counter 1).
The first phase conductor 40a includes a first transformer 41a. The second phase conductor 40b includes a second transformer 41b. The third phase conductor 40c includes a third transformer 41c.
Each transformer 41, in the form of a torus, makes it possible to reduce the very high currents (several hundreds of amperes) flowing on the phase conductors 40 to lower currents compatible with the current sensors 12 of the counter 1.
The first transformer 41a is passed through without being connected to it by the first phase conductor 40a. The first transformer 41a has a secondary having a first terminal connected to the first upstream current port 2a and having a second terminal connected to the first downstream current port 2b.
The first phase conductor 40a associated with the first transformer 41a is also connected to the first voltage port 3a via the first conductive element 31a of the adaptation module 24 mounted on the counter 1. The first phase conductor 40a is connected to the connection member 36 of the first conductive element 31a.
The first circuit breaker 7a is open.
The first current sensor 12a measures the current flowing between the first upstream port 2a and the first downstream port 2b, and therefore the current flowing in the secondary of the first transformer 41a (which is an image of the current actually flowing on the first conductor phase 40a).
The first voltage sensor 13a, connected to the first voltage port 3a and therefore to the first phase conductor
40a upstream of the counter 1, via the first conductive element 31a of the adaptation module 24 and via the movable contact 8 of the first circuit breaker 7a, measures the voltage on the first phase conductor 40a upstream of the counter 1.
All this also applies to the second phase conductor 40b (with the second transformer 41b, the second current sensor 12b and the second voltage sensor 13b) and to the third phase conductor 40c (with the third transformer 41c, the third sensor 12c and the third voltage sensor 13c).
The second terminals of the secondary transformers 41 are interconnected and are connected to an earth 44 of the customer's electrical installation 42.
The first neutral port 4a (equipotent to the second neutral port 4b) of the counter 1 is connected to the neutral conductor 43 of the distribution network 6. The second neutral port 4b is connected to an earth of the customer's electrical installation 42 .
It is noted that the current measurements carried out by the first current sensor 12a are completely uncorrelated from the voltage measurements carried out by the first voltage sensor 13a. This also applies to the measurements made by the second current sensor 12b and the second voltage sensor 13b, and by the third current sensor 12c and the third voltage sensor 13c.
As the adaptation module 24 is mounted on the counter 1, the detector detects the presence of the adaptation module 24. The microcontroller 9 therefore performs a second processing using second parameters on the current and voltage measurements. In particular, the second processing takes into account the fact that the counter 1 is connected via the transformers 41 to the distribution network 6, to produce measurements corresponding to the currents and voltages actually present on the distribution network 6.
Thus, the first treatment and the second treatment differ in particular by taking into account the transformation ratio of the transformers 41.
It is noted that, when the configuration of the counter 1 is carried out in the factory, it may be advantageous to mount the adaptation module 24 on the counter 1 before the mounting and the factory calibration of the counter 1. The counter 1 is thus in the second configuration, provided with the adaptation module 24, for defining calibration parameters possibly used by the second processing.
Of course, the invention is not limited to the embodiment described but encompasses any variant coming within the scope of the invention as defined by the claims.
Although the counter presented here is a three-phase counter, the invention naturally applies to a single-phase counter or to any type of polyphase counter.
Although the counter according to the first configuration and the counter according to the second configuration described here are identical counters at the hardware level (with the exception of the presence of the adaptation module), it is possible to plan to replace the internal toroids, on site, to adapt them to the second configuration of the meter. Advantageously, provision will be made to be able to replace the internal toroids without unbinding the counter. The copper arms of the circuit breakers and the associated internal toroids are then for example removable and accessible by simple opening of the removable cover (mistletoe is itself possibly sealed on the meter).
The use of circuit breakers has been described here. By “circuit breaker” is meant any type of breaking device, switch, switch, adapted to open and close an electrical circuit by the movement of a movable contact.
Here, the counter has been equipped with a detector to automatically detect the presence of the adaptation module, which allows the microcontroller to automatically adapt the processing carried out according to the configuration of the counter. It would also be possible to equip the meter with an interface allowing, from outside the meter, to communicate to the microcontroller if the meter is in the first configuration or in the second configuration. This interface can for example be a manual interface, accessible by an operator, or else a computer interface, accessible by a server.

权利要求:
Claims (9)
[1" id="c-fr-0001]
1. Electricity meter configurable according to a first configuration in which the meter is adapted to be connected directly to a phase conductor (40) of a distribution network (6), and according to a second configuration in which the meter is adapted to be connected to the phase conductor (40) via a transformer (41) located on the phase conductor, the meter comprising an upstream current port (2a, 2c, 2e) and a downstream current port (2b, 2d, 2f) intended to be connected to the phase conductor, a voltage port (3), a circuit breaker (7) closed by default comprising a movable contact (8) having a fixed end connected to the voltage port and a movable end connected to the port upstream current when the circuit breaker is closed, a reception device adapted to accommodate an adaptation module (24), and an access orifice (25) through which a conductive element (31) of the adaptation module when this it is mounted on the meter, so that when the adapter module is mounted on the meter, the conductive element is in contact with the movable contact of the circuit breaker and opens the circuit breaker while being connected to the voltage port, the counter then being in the second configuration, and when the adaptation module (24) is not mounted on the counter, the counter is in the first configuration.
[2" id="c-fr-0002]
2. Counter according to claim 1, comprising a fixed base (23) in which the access orifice (25) is formed.
[3" id="c-fr-0003]
3. A meter according to claim 1, comprising a processing module (9) connected to the current sensor and to the voltage sensor, the processing module being adapted to carry out a first processing on current measurements and on voltage measurements when the counter is in the first configuration, and a second processing on the current measurements and on the voltage measurements when the counter is in the second configuration.
[4" id="c-fr-0004]
4. Counter according to claim 3, in which the first treatment and the second treatment differ by taking into account a transformation ratio of the transformer (41).
[5" id="c-fr-0005]
5. Counter according to claim 1, comprising a detector adapted to detect if the counter is in the first configuration or in the second configuration, and to transmit the result of the detection to the processing module (9).
[6" id="c-fr-0006]
6. Counter according to claim 3, comprising an interface allowing, from outside the counter, to communicate to the processing module if the counter is in the first configuration or in the second configuration.
[7" id="c-fr-0007]
7. Adaptation module adapted to configure a meter according to one of the preceding claims, the adaptation module (24) comprising a fixing device (32) adapted to fix the adaptation module on the meter and a conductive element (31) intended to extend into the access opening of the meter, the conductive element comprising at a first end a connection member (36) adapted to be connected to the phase conductor of the distribution network, and a second enlarged end (37) adapted to snap the conductive element (31) into the meter.
[8" id="c-fr-0008]
8. System comprising a counter (1) according to one of claims 1 to 6 and an adaptation module (24) according to claim 7.
[9" id="c-fr-0009]
9. Method of configuring a counter according to
one of claims 1 to 6, comprising Steps :intended for be of determine if the counter East connected directly to a conductor of phase (40) of a network of distribution (6), or if the counter East
intended to be connected to the phase conductor via a transformer (41) located on the phase conductor (40);
- if the meter is intended to be connected via the transformer (41), install an adaptation module according to
5 claim 7 on the counter.
1/6 r> Γ'- Γ1
2/6

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同族专利:

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EP3488252B1|2020-05-20|

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CN109477864A|2019-03-15|

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US11067613B2|2021-07-20|

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WO2018015202A1|2018-01-25|

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FR3054322B1|2018-08-17|

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CN109477864B|2021-04-20|

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US20190178921A1|2019-06-13|

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法律状态:
2017-06-20| PLFP| Fee payment|Year of fee payment: 2 |

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2018-01-26| PLSC| Publication of the preliminary search report|Effective date: 20180126 |

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2018-06-21| PLFP| Fee payment|Year of fee payment: 3 |

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2020-06-23| PLFP| Fee payment|Year of fee payment: 5 |

优先权:

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申请号 | 申请日 | 专利标题

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FR1656978A|FR3054322B1|2016-07-21|2016-07-21|CONFIGURABLE ELECTRIC ENERGY COUNTER|

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FR1656978|2016-07-21|FR1656978A| FR3054322B1|2016-07-21|2016-07-21|CONFIGURABLE ELECTRIC ENERGY COUNTER|

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CN201780044195.1A| CN109477864B|2016-07-21|2017-07-10|Configurable electricity meter|

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US16/319,112| US11067613B2|2016-07-21|2017-07-10|Configurable electricity meter|

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PCT/EP2017/067309| WO2018015202A1|2016-07-21|2017-07-10|Configurable electricity meter|

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EP17735590.6A| EP3488252B1|2016-07-21|2017-07-10|Configurable electricity meter|