External switch, electric energy meter and modular metering box
阅读说明：本技术 一种外置开关、电能表及模块化计量箱 (External switch, electric energy meter and modular metering box ) 是由 穆小星 徐晴 赵双双 田正其 欧阳曾恺 周超 段梅梅 龚丹 夏国芳 于 2019-10-29 设计创作，主要内容包括：本发明提供一种外置开关、电能表及模块化计量箱,由若干个形状相同的模块单元卡接在一起构成的,其中一个模块单元为电动操作机构、置于端部,其余为相极、紧靠电动操作机构依次排列,所述模块单元为方形,一侧面上设有凸台,即模块单元的一侧面由平台和凸台构成。优点：不但从外形上更加美观,而且大大减小了体积,节约空间；避免了传统的中性相极N非正常断开或虽非正常断开但接触不良使N极触点电阻变大,而导致的三相电压不平衡烧毁用户家用电器。(The invention provides an external switch, an electric energy meter and a modular metering box, which are formed by clamping a plurality of module units with the same shape, wherein one module unit is an electric operating mechanism and is arranged at the end part, the other module units are opposite poles and are arranged in sequence close to the electric operating mechanism, the module units are square, a boss is arranged on one side surface, and namely one side surface of each module unit is formed by a platform and the boss. The advantages are that: not only has more beautiful appearance, but also greatly reduces the volume and saves the space; the phenomenon that the household appliances of users are burnt out due to unbalanced three-phase voltage caused by the fact that the contact resistance of the N pole is increased due to abnormal disconnection of the N pole of the traditional neutral phase or the abnormal disconnection but poor contact is avoided.)
1. An external switch, its characterized in that: the modular unit is formed by clamping a plurality of modular units with the same shape, wherein one modular unit is an electric operating mechanism and is arranged at the end part, the rest modular units are phase poles and are arranged in sequence close to the electric operating mechanism, the modular units are square, and one side surface of each modular unit is formed by a platform and a boss.
2. The external switch of claim 1, wherein: the number of the phase poles is 3, the phase poles are respectively a phase pole I, a phase pole II and a phase pole III, and the live wire of the electric operating mechanism is used for getting electricity from the incoming wire ends of the phase pole I, the phase pole II and the phase pole III.
3. The external switch of claim 2, wherein: the electric operating mechanism is provided with a zero line wire taking device, one end of the zero line wire taking device is led out from a power supply on a circuit board in the electric operating mechanism, and the other end of the zero line wire taking device is connected to an N-pole wiring row of the meter box during use.
4. The external switch of claim 2, wherein: the electric operating mechanism is provided with a signal terminal, and the signal terminal is provided with two terminals for control and feedback and is respectively connected to the electric energy meter.
5. The external switch of claim 1, wherein: the quantity of looks utmost point is 4, is looks utmost point one, looks utmost point two, looks utmost point three and looks utmost point four respectively, electric operating mechanism's live wire by the incoming line end of looks utmost point one, looks utmost point two, looks utmost point three and looks utmost point four gets the electricity, the incoming line terminal and the terminal that goes out of line of looks utmost point four link to each other, and do not have the breakpoint.
6. The external switch of claim 5, wherein: the electric operating mechanism is provided with a signal terminal, and the signal terminal is provided with two terminals for control and feedback and is respectively connected to the electric energy meter.
7. The external switch of claim 5, wherein: connecting terminals are arranged at the edges of two ends of the four phase pole bosses and the edge of the platform, namely a first connecting terminal to a fourth connecting terminal, wherein the first connecting terminal and the fourth connecting terminal are connected through a first copper bar; the second wiring terminal and the third wiring terminal pass through the second copper bar and are connected with each other, and the first copper bar and the second copper bar are connected with each other through soft lead spot welding.
8. The external switch of claim 5, wherein: the edges of two ends of the four phase pole platforms are provided with wiring terminals, namely a wiring terminal five and a wiring terminal six, and the wiring terminal five and the wiring terminal six are connected through flexible conductors; and the boss of the phase pole four is provided with an arch-shaped bulge.
9. The external switch of claim 1, wherein: a circuit board is arranged in the electric operating mechanism.
10. An electric energy meter using the external switch according to any one of claims 1 to 9.
11. A modular metering box incorporating an external switch as claimed in any one of claims 1 to 9.
Technical Field
The invention relates to a switch, in particular to an external switch, an electric energy meter and a modular metering box.
Background
At present, external circuit breakers/intelligent switches of three-phase electric energy meters are 4 poles (4P), all poles are disconnected contact systems, and zero lines of working power supplies of electric operating mechanisms of the three-phase electric energy meters all need to get electricity through corresponding N poles. Because the N pole has a breakpoint, the abnormal disconnection of the N pole or the abnormal disconnection but poor contact of the N pole can cause the resistance of the N pole contact to be increased, thereby causing the unbalanced three-phase voltage of the power supply to burn out the household appliances of users.
In addition, the existing circuit breaker/intelligent switch has a complex structure and a large occupied volume, and some places can not meet the space requirement.
Disclosure of Invention
The invention provides an external switch, an electric energy meter and a modular metering box in order to solve the defects in the prior art.
In order to solve the technical problems, the invention provides an external switch which is formed by clamping a plurality of module units with the same shape, wherein one module unit is an electric operating mechanism and is arranged at the end part, the rest module units are opposite poles and are arranged in sequence close to the electric operating mechanism, the module units are square, and one side surface of each module unit is formed by a platform and a boss.
Furthermore, the number of the phase poles is 3, the phase poles are respectively a phase pole I, a phase pole II and a phase pole III, and the live wire of the electric operating mechanism is powered by the incoming wire ends of the phase pole I, the phase pole II and the phase pole III.
Furthermore, the electric operating mechanism is provided with a zero line wire taking wire, one end of the zero line wire taking wire is led out from a power supply on a circuit board in the electric operating mechanism, and the other end of the zero line wire taking wire is connected to an N-pole wiring row of the meter box during use.
Furthermore, the electric operating mechanism is provided with a signal terminal, and the signal terminal is provided with two terminals for control and feedback and is respectively connected to the electric energy meter.
Furthermore, the quantity of looks utmost point is 4, is looks utmost point one, looks utmost point two, looks utmost point three and looks utmost point four respectively, electric operating mechanism's live wire by the incoming line end of looks utmost point one, looks utmost point two, looks utmost point three and looks utmost point four gets the electricity, the incoming line terminal and the terminal that goes out of the line of looks utmost point four link to each other, and do not have the breakpoint.
Furthermore, the electric operating mechanism is provided with a signal terminal, and the signal terminal is provided with two terminals for control and feedback and is respectively connected to the electric energy meter.
Furthermore, connecting terminals are arranged at the edges of two ends of the four phase pole bosses and the edge of the platform, namely a connecting terminal I to a connecting terminal IV, wherein the connecting terminal I and the connecting terminal IV are connected through a copper bar I; the second wiring terminal and the third wiring terminal pass through the second copper bar and are connected with each other, and the first copper bar and the second copper bar are connected with each other through soft lead spot welding.
Furthermore, connecting terminals, namely a connecting terminal five and a connecting terminal six, are arranged at the edges of two ends of the phase four platform respectively, and the connecting terminal five and the connecting terminal six are connected through a flexible conductor; and the boss of the phase pole four is provided with an arch-shaped bulge.
Further, a circuit board is arranged in the electric operating mechanism.
In addition, the invention also provides an electric energy meter adopting any one of the external switches.
Moreover, the invention also provides a modular metering box adopting any one of the external switches
The invention achieves the following beneficial technical effects: the invention provides an external switch, an electric energy meter adopting the external switch and a modular metering box adopting the external switch, wherein the phase pole and an electric operating mechanism of the external switch are in modular design, so that the external switch is more attractive in appearance, the size is greatly reduced, and the space is saved. As an optimized technical scheme of the invention, the phase pole has the following internal structure: 1. adopting a 3P structure: the neutral phase pole N is replaced by the electric wire taken from the zero line, so that the size of the switch is greatly reduced, and the function of the switch is not influenced; or, 2. adopt the 3P + N structure: the incoming line terminal and the outgoing line terminal of the neutral phase pole N are directly connected without a breakpoint, so that the phenomenon that the user household appliance is burnt due to unbalanced three-phase voltage caused by the fact that the N pole contact resistance is increased due to abnormal disconnection or abnormal disconnection but poor contact of the traditional neutral phase pole N is avoided.
Drawings
FIG. 1 is a schematic structural view of
FIGS. 2 to 3 are schematic structural views of
fig. 4 to 5 are schematic views of another structure of
Wherein: 1 an electric operating mechanism; 2 a signal terminal; 3, phase one; 4, phase two; 5, phase III; 6, phase IV; 7, taking a wire from the zero line; 8, a first connecting terminal; 9, a second wiring terminal; 11, a third wiring terminal; 12, a wiring terminal IV; 13, arranging a first copper bar; 14, copper bar II; 15 flexible leads; 16, a fifth connecting terminal; and 17, a sixth terminal.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention is further described with reference to the following figures and examples.
The invention provides an external switch, which is formed by clamping a plurality of module units with the same shape, wherein one module unit is an
As one
As example 2 of the present application, a 3P + N structure is adopted: the quantity of looks utmost point is 4, is looks utmost point one 3, looks utmost point two 4, looks utmost point three 5 and looks utmost point four 6 respectively, electric operating mechanism's live wire by the incoming line end of looks utmost point one 3, looks utmost point two 4, looks utmost point three 5 and looks utmost point four 6 is got the electricity, the incoming line terminal and the outgoing line terminal of looks utmost point four 6 link to each other, and do not have the breakpoint. The phenomenon that the household appliances of users are burnt out due to unbalanced three-phase voltage caused by the fact that the contact resistance of the N pole is increased due to abnormal disconnection of the N pole of the traditional neutral phase or the abnormal disconnection but poor contact is avoided. The
As a structural form of
As another structure form of
The switches of the two embodiments can be used for the current three-phase electric energy meter, and remote tripping and closing of a circuit of the three-phase electric energy meter are achieved, so that remote automatic control of cost control or other requirements is achieved, and the three-phase electric energy meter external intelligent control switch/breaker becomes a large-load three-phase electric energy meter external intelligent control switch/breaker.
The present invention has been disclosed in terms of the preferred embodiment, but is not intended to be limited to the embodiment, and all technical solutions obtained by substituting or converting equivalents thereof fall within the scope of the present invention.
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