CN109856436A - A kind of electric energy metering device - Google Patents

A kind of electric energy metering device Download PDF

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Publication number
CN109856436A
CN109856436A CN201910020814.4A CN201910020814A CN109856436A CN 109856436 A CN109856436 A CN 109856436A CN 201910020814 A CN201910020814 A CN 201910020814A CN 109856436 A CN109856436 A CN 109856436A
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CN
China
Prior art keywords
electric energy
terminal
terminal box
metering device
energy metering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910020814.4A
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Chinese (zh)
Inventor
彭昕
王上
张珂
马练哲
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State Grid Shanghai Electric Power Co Ltd
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State Grid Shanghai Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Shanghai Electric Power Co Ltd filed Critical State Grid Shanghai Electric Power Co Ltd
Priority to CN201910020814.4A priority Critical patent/CN109856436A/en
Publication of CN109856436A publication Critical patent/CN109856436A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of electric energy metering devices, the electric energy metering device includes electric energy meter, terminal box and metering mutual inductor, the connecting terminal of the terminal box end of incoming cables is connect with the metering with mutual inductor, the connecting terminal of the terminal box leading-out terminal connects electric energy meter, the electric energy metering device further includes arrester and triac device, the movable contact of the three-phase voltage connecting terminal connection triac device of the terminal box leading-out terminal, first stationary contact of the triac device connects the arrester, second stationary contact of the triac device connects earth mat.The present invention has anti-lightning strike overvoltage and electroshock-proof function, solves the problem of that existing electric energy metering device often causes damage since electronic component voltage endurance capability is weak because of Lightning Over-voltage.

Description

A kind of electric energy metering device
Technical field
The present invention relates to electric energy metering device fields, and in particular to a kind of electric energy metering device.
Background technique
Signified testing terminal, electrical energy measurement wiring in electric energy metering wiring box i.e. electric energy metering device inspection procedure Box can reduce the quantity of TA (current transformer), TV (voltage transformer), convenient for electrification verification measuring instrumentss, and can charge In the case of exchange the normal work of connect instrument without influencing other instrument.Terminal box has played hinge in electrical measurement metering line Effect, moreover it is possible to be effectively prevented wiring mistake, improve the accuracy of measurement, there are multiple functions and be widely used.
Present electric energy meter generally uses electronic electric energy meter, carries out electrical energy measurement, electronic component by terminal box Voltage endurance capability is generally weaker, damage caused by frequently encountering in use process because of Lightning Over-voltage.
Summary of the invention
The object of the present invention is to provide a kind of electric energy metering devices, to solve existing electric energy metering device due to electronics The problem of component voltage endurance capability is weak, and damage is often caused because of Lightning Over-voltage.
To achieve the above object, the scheme of the invention is: a kind of electric energy metering device, the electric energy metering device include Electric energy meter, terminal box and metering mutual inductor, the connecting terminal of the terminal box end of incoming cables connect with the metering mutual inductor It connects, the connecting terminal of the terminal box leading-out terminal connects electric energy meter, and the electric energy metering device further includes that arrester and three knives are double Throw switch, the movable contact of the three-phase voltage connecting terminal connection triac device of the terminal box leading-out terminal, three knife are double First stationary contact of throw switch connects the arrester, and the second stationary contact of the triac device connects earth mat.
Further, the connecting terminal of the connecting terminal and leading-out terminal of the terminal box end of incoming cables is connected by connection sheet, The connection sheet includes voltage connection sheet, electric current connection sheet and neutral conductor connection sheet.
Further, the bottom of the terminal box is provided with knife switch, and the connection sheet is fixed on the lock of knife switch On knife bar, voltage cutout, electric current short-circuit operation are realized by pushing up plug-in strip bar.
Further, when electric energy meter works normally, the movable contact of triac device and the first stationary contact are connected, wiring The three-phase voltage terminal of box is connected to arrester, is used for lightning protection;When electric energy meter is in verification state or replacement electric energy meter, three The movable contact of double-pole double throw switch and the second stationary contact are connected, and the three-phase voltage terminal of terminal box is connected to grounded screen, are used for anti-touching Electricity.
Further, the shell of the terminal box is transparent material.
Further, the shell material of the terminal box adds Flame-retardant ABS plastic using polyphosphazene polymer carbonate material.
It is that the present invention reaches the utility model has the advantages that 1, electric energy metering device of the invention is provided with arrester, normal in electric energy meter Lightning protection can be realized when work, avoid electronic component because of damage caused by Lightning Over-voltage.
2, it is designed using knife switch, saves the time of the turn of the screw, effectively shorten the repair time, reduce operation maintenance personnel Labor intensity reduces power off time, improves electricity consumption.And operation is convenient, can operate voltage and current connection simultaneously Piece settles at one go, greatly shortens the operating time.
3, operational safety increases substantially, and electric shock risk when work can be effectively reduced, improve the reliability of power supply.
4, box body is made of novel transparent material, is easily detected and behaviors and the breakdown judge such as is stolen, leaks electricity, not only operates more Rapidly, failure rate is lower, and can effectively shorten the operating time.
Detailed description of the invention
Fig. 1 is the schematic diagram of electric energy metering device of the invention;
Fig. 2 is the schematic diagram of terminal box knife switch of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, electric energy metering device of the invention includes electric energy meter, terminal box and metering mutual inductor, wiring The connecting terminal of box end of incoming cables and metering are connected with mutual inductor, and the connecting terminal of terminal box leading-out terminal connects electric energy meter.
Present electric energy meter generally uses electronic electric energy meter, carries out electrical energy measurement, electronic component by terminal box Voltage endurance capability is generally weaker, damage caused by frequently encountering in use process because of Lightning Over-voltage.To solve the above problems, this hair Bright electric energy metering device is also provided with arrester and triac device, and the three-phase voltage connecting terminal of terminal box leading-out terminal connects Connecing the movable contact of triac device, the first stationary contact of triac device connects arrester, and the second of triac device Stationary contact connects earth mat.
In the present invention, terminal box end of incoming cables is connected with the connecting terminal of leading-out terminal by connection sheet, when electric energy meter is in just When normal working condition, route metering is connected to by the connecting terminal of terminal box with electric energy meter with mutual inductor.When electric energy meter is in school Test or when inspecting state, adjusted by the position of connection sheet, keep apart electric energy meter and metering with mutual inductor, i.e., electric energy meter with Metering is disconnected with mutual inductor.
Three-phase lightning protector and the conducting wire for connecting earth mat, U2 (A phase), the V2 (B of terminal box are connected to by triac device Phase), three connecting terminals of W2 (C phase).When electric energy meter is in running order, triac device is located at the position 2-4-6, electric energy Table is connect with arrester, plays the role of anti-lightning strike overvoltage;When electric energy meter is in verification or inspecting state, triple-pole double throw is opened Off-position is connect in the position 1-3-5, electric energy meter with earth mat, plays electroshock-proof function.
1, when electric energy meter works normally, triac device is located at the position the first stationary contact (2-4-6), and terminal box voltage connects Line terminals are connected to arrester, play the role of lightning protection.When normal work, if route is struck by lightning, line over-voltage passes through mutual Sensor, terminal box voltage terminal, which are transmitted to arrester, to be caused to discharge, and plays the role of protecting electric energy meter.
2, when electric energy meter is in verification state or replacement electric energy meter, triac device is located at the second stationary contact (1-3- 5) position, terminal box voltage wiring terminal are connected to earth mat, play the role of protection against electric shock.When terminal box is in verification state, into The voltage wiring terminal of line end is disconnected with metering mutual inductor secondary side, is at this time grounded the voltage wiring terminal of leading-out terminal, Play the role of ground protection.During verifying or replacing electric energy meter, in case of maloperation, protection electric energy meter is played With the effect of operator.
As further optimizing, the box body of terminal box of the invention uses transparent material, by using polyphosphazene polymer carbon Acid esters material is (transparent) plus Flame-retardant ABS plastic (transparent) makes box body transparent flame-retarding.When occur stealing, leaky when, can quickly, it is quasi- Really find out problem.
Further, terminal box bottom of the present invention is provided with knife switch, which runs through entire terminal box, this reality It applies in example, seven cylinders are distributed in plug-in strip bar, and for fixing corresponding connection sheet, the connection sheet is respectively voltage connection Piece, electric current connection sheet and neutral conductor connection sheet.When in the horizontal position, connection sheet is by metering mutual inductor and electric energy for plug-in strip bar Table is connected, and electric energy meter normally measures;When electric energy meter needs to overhaul, plug-in strip bar is pushed up, i.e., operates voltage and current simultaneously Connection sheet realizes that voltage cutout, electric current are shorted, and electric energy meter, which exits, to be overhauled.
It is designed using guillotine type, need to only push plug-in strip that short circuit and opening operation can be realized, box body uses novel transparent material Behaviors and the breakdown judges such as material production, easily detection steal, electric leakage, not only operate more rapidly, failure rate it is lower, but also can effectively contract The short operation time.

Claims (6)

1. a kind of electric energy metering device, the electric energy metering device includes electric energy meter, terminal box and metering mutual inductor, institute The connecting terminal for stating terminal box end of incoming cables is connect with the metering with mutual inductor, the connecting terminal connection of the terminal box leading-out terminal Electric energy meter, it is characterised in that:
The electric energy metering device further includes arrester and triac device, the three-phase voltage wiring of the terminal box leading-out terminal Terminal connects the movable contact of triac device, and the first stationary contact of the triac device connects the arrester, described Second stationary contact of triac device connects earth mat.
2. electric energy metering device according to claim 1, which is characterized in that the connecting terminal of the terminal box end of incoming cables with The connecting terminal of leading-out terminal is connected by connection sheet, and the connection sheet includes voltage connection sheet, electric current connection sheet and the neutral conductor Connection sheet.
3. electric energy metering device according to claim 2, which is characterized in that the bottom of the terminal box is provided with plug-in strip and opens It closes, the connection sheet is fixed on the plug-in strip bar of knife switch, realizes that voltage cutout, electric current are shorted by pushing up plug-in strip bar Operation.
4. electric energy metering device according to claim 1, which is characterized in that when electric energy meter works normally, triple-pole double throw The movable contact of switch and the first stationary contact are connected, and the three-phase voltage terminal of terminal box is connected to arrester, are used for lightning protection;Work as electric energy When table is in verification state or replacement electric energy meter, the movable contact of triac device and the second stationary contact are connected, terminal box Three-phase voltage terminal is connected to grounded screen, is used for protection against electric shock.
5. electric energy metering device according to claim 1, which is characterized in that the shell of the terminal box is transparent material.
6. electric energy metering device according to claim 5, which is characterized in that the shell material of the terminal box uses high score Sub- makrolon material adds Flame-retardant ABS plastic.
CN201910020814.4A 2019-01-09 2019-01-09 A kind of electric energy metering device Pending CN109856436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910020814.4A CN109856436A (en) 2019-01-09 2019-01-09 A kind of electric energy metering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910020814.4A CN109856436A (en) 2019-01-09 2019-01-09 A kind of electric energy metering device

Publications (1)

Publication Number Publication Date
CN109856436A true CN109856436A (en) 2019-06-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441565A (en) * 2019-08-07 2019-11-12 山西磊源电器有限责任公司 A kind of intelligent electric energy meter phase sequence falls cutting apparatus

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203013769U (en) * 2013-01-03 2013-06-19 昆明绿电科技有限公司 Photovoltaic combiner box with copper bar structure
CN203734303U (en) * 2014-03-11 2014-07-23 李亮棠 Lightning prevention detection protective device used by low-voltage line or low-voltage-power user
CN204008767U (en) * 2014-07-17 2014-12-10 国家电网公司 There is the electric power meter of metering secondary associating terminal block
CN204361672U (en) * 2014-12-16 2015-05-27 广东北江开关厂有限公司 A kind of agriculture net cage system
CN204992580U (en) * 2015-10-16 2016-01-20 远大中联控股集团有限公司 Expanded not repeated fixed measuring equipment of dual power supply
CN205863657U (en) * 2016-08-10 2017-01-04 上海国孚电力设计工程股份有限公司 220kV double bus scheme transmission line circuit wiring optimizes structure
KR20170044988A (en) * 2015-10-16 2017-04-26 한국전력공사 Connector for connecting wire of watt hour meter
CN207082799U (en) * 2017-08-14 2018-03-09 深圳康普盾科技股份有限公司 A kind of combined connection box for possessing lightning protection function
CN108548947A (en) * 2018-03-30 2018-09-18 上海电力学院 A kind of guillotine type electric energy metering combined wiring box
CN208174187U (en) * 2018-04-28 2018-11-30 广东电网有限责任公司 A kind of electric energy metering wiring box having lightning protection function

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203013769U (en) * 2013-01-03 2013-06-19 昆明绿电科技有限公司 Photovoltaic combiner box with copper bar structure
CN203734303U (en) * 2014-03-11 2014-07-23 李亮棠 Lightning prevention detection protective device used by low-voltage line or low-voltage-power user
CN204008767U (en) * 2014-07-17 2014-12-10 国家电网公司 There is the electric power meter of metering secondary associating terminal block
CN204361672U (en) * 2014-12-16 2015-05-27 广东北江开关厂有限公司 A kind of agriculture net cage system
CN204992580U (en) * 2015-10-16 2016-01-20 远大中联控股集团有限公司 Expanded not repeated fixed measuring equipment of dual power supply
KR20170044988A (en) * 2015-10-16 2017-04-26 한국전력공사 Connector for connecting wire of watt hour meter
CN205863657U (en) * 2016-08-10 2017-01-04 上海国孚电力设计工程股份有限公司 220kV double bus scheme transmission line circuit wiring optimizes structure
CN207082799U (en) * 2017-08-14 2018-03-09 深圳康普盾科技股份有限公司 A kind of combined connection box for possessing lightning protection function
CN108548947A (en) * 2018-03-30 2018-09-18 上海电力学院 A kind of guillotine type electric energy metering combined wiring box
CN208174187U (en) * 2018-04-28 2018-11-30 广东电网有限责任公司 A kind of electric energy metering wiring box having lightning protection function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441565A (en) * 2019-08-07 2019-11-12 山西磊源电器有限责任公司 A kind of intelligent electric energy meter phase sequence falls cutting apparatus

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