CN2359754Y - Multifunction controller for avoiding stealing electric - Google Patents

Abstract

The utility model discloses a multifunction controller for avoiding stealing electricity, which comprises a controller and an accessory, wherein, the controller comprises a zero sequence mutual inductor T1, a symmetrical current mutual inductor T2, an air switch K or other intermediate load, an SCR V and a capacitor C; the accessory comprises a symmetrical current mutual inductor T3. In installation and use, the controller is arranged on an electric pole or in a control chamber, and the accessory is arranged in a lead sealing box of an electricity meter of a user. Therefore, the utility model has the functions of preventing electricity stealing behaviors, such as wiring in front of the meter, shunting out of the meter, connecting a fire wire and a ground wire, etc., and also the functions of preventing from being sheared and broken, electrical shock protecting, overload protecting, short-circuit protecting, etc. The utility model has the advantages of simple structure and low cost, and can be used for the place using a three-phase power supply.

Description

Multi-functional controller for preventing illegal use of electricity

The utility model relates to the power supply electronic-controlled installation, and particularly a kind of adapted reaches the anti-electricity-theft control device behind the table before single-phase watt-hour meter.

Along with the development of producing, the raising of living standards of the people, the various electricity filching behaviors of the increase of power consumption happen occasionally, the electricity filching means that adopts is also more and more, as show preceding wiring, and the off-balancesheet shunting, a fiery ground etc. are without the electricity filching behavior of ammeter metering electricity consumption, cause very big economic loss to state and collective, though now anti-electricity-theft product is a lot of on the market, the complex structure that has, cost an arm and a leg the function singleness that has, can not be tamper-proof, can not generally use popularization.

The purpose of this utility model provides a kind of preceding wiring that prevents to show, the off-balancesheet shunting, and electricity filching behaviors such as a fiery ground also have shearing-proof simultaneously, and are tamper-proof, electric shocked guard, the controller for preventing illegal use of electricity of overload protection function and short-circuit protection.

The technical solution of the utility model is such: multi-functional controller for preventing illegal use of electricity comprises zero sequence current mutual inductor T ₁, two symmetric figure current transformer T ₂And T ₃, load in the middle of air switch K or other, controllable silicon V, capacitor C, the breaking coil of the output termination air switch K of controllable silicon V, the input termination electric current mutual inductor T of controllable silicon V ₁, T ₂, T ₃Secondary L ₃, L ₅, L ₇And capacitor C, wherein T ₂, T ₃Secondary L ₅, L ₇Headtotail, T ₁Elementary L ₁, L ₂Meet electric power incoming line zero line and process normally closed interlock K respectively ₁Live wire on, T ₂Elementary L ₄Be connected on T ₁Elementary L ₂An end, T ₃Elementary L ₆One terminates at ammeter goes out hot terminal, another termination load wiring end, T ₁, T ₂Secondary L ₃, L ₅One terminates on the live wire T ₃Secondary L ₇A termination ammeter advance on the live wire end.Controllable silicon V ₁Input end be connected to resistance R.

The utility model has following several function:

1. wiring before the anti-table: when extremely connecting load between the thief-proof controller before the electricity filching person ammeter, then flow through T ₂Elementary L ₄The electric current of coil is greater than and flows through T ₃Elementary L ₆Electric current, therefore at T ₂Secondary L ₅And T ₃Secondary L ₇The electromotive force imbalance of last induction, controllable silicon trigger and make the air pass open K action, K ₁Open, cut off power supply.

2. off-balancesheet shunting is when the switching motherboard of electricity filching person with ammeter box, from behind (because of front annex T ₃Build with protective cover, lead sealing arranged) in the time of will advancing fire and fire operating in short-circuit and shunt, because of flowing through T ₃Elementary L ₆Electric current, less than flowing through T ₂Elementary L ₄Electric current, at L ₅And L ₇The electromotive force difference of last induction, thus controllable silicon V work promoted, cut off power supply.

3. an anti-fiery ground is cut off when electricity filching person will advance to show zero line, and during with an end (former zero line) ground connection of load, flows through T ₁Elementary L ₁Electric current is less than flowing through L ₂Electric current, therefore at secondary L ₃Two ends produce induced potential, thereby promote controllable silicon V work, cut off power supply.

4. touch earth leakage protection: when the people when contacting live wire, is then flow through T because of certain situation when the insulation breakdown ground connection of line (or) ₁Elementary L ₁Electric current less than flowing through L ₂Electric current, make secondary L ₃Responded to electromotive force, cut off power supply and promote controllable silicon V.

5. overload protection: when we are making T ₂, T ₃During the electric current mutual inductor of two symmetries; so need to make certain deviation, can promote controllable silicon V cut-out power supply, finely tune the overload definite value and the minimum protective current that gets an electric shock exactly thereby reach overload protection, adjustable resistance when load increases to once timing (setting value) this deviation gesture.Capacitor C is that the misoperation when preventing to forfeit electricity is provided with.

6. prevent that cutting (breaking) line destroys; Signal wire is during by artificial or non-artificial breaking, then T ₃Secondary L ₇Last electromotive force is 0, and controllable silicon V just passes through T ₂Secondary L ₅Electromotive force promotes supply current is cut off.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model wiring diagram;

Fig. 2 is the utility model circuit and ammeter circuit connection diagram;

Fig. 3 is the utility model block scheme;

As shown in Figure 1: multi-functional controller for preventing illegal use of electricity comprises zero sequence current mutual inductor T ₁, two symmetric figure current transformer T ₂And T ₃, load in the middle of air switch K or other, controllable silicon V, capacitor C, the breaking coil of the output termination air switch K of controllable silicon V or load in the middle of other, the input termination electric current mutual inductor T of controllable silicon V ₁, T ₂, T ₃Secondary L ₃, L ₅, L ₇And capacitor C, wherein T ₂, T ₃Secondary L ₅, L ₇Headtotail, T ₁Elementary L ₁, L ₂Meet electric power incoming line zero line and process normally closed interlock K respectively ₁Live wire on, T ₂Elementary L ₄Be connected on T ₁Elementary L ₂An end, T ₃Elementary L ₆One terminates at ammeter goes out hot terminal, another termination load wiring end, T ₁, T ₂Secondary L ₃, L ₅One terminates on the live wire T ₃Secondary L ₇A termination ammeter advance on the live wire end.The input end of controllable silicon V is connected to resistance R.

As shown in Figure 2: the T of multi-functional controller for preventing illegal use of electricity ₁Elementary L ₁One termination ammeter advances to show zero line, T ₂Elementary L ₄, secondary L ₅, T ₁Secondary L ₃A termination ammeter advance to show live wire, T ₃Elementary L ₆One termination ammeter goes out to show live wire, another termination load, secondary L ₇One termination ammeter advances to show live wire.

As shown in Figure 3: multi-functional controller for preventing illegal use of electricity sub-controller, annex T ₃Two parts have four interfaces on the controller, 1,2 interfaces connect zero-power line and power firestreak respectively, and 3,4 interfaces connect respectively that ammeter advances to show zero line and ammeter advances to show live wire, annex T ₃Last 5,6,7 interfaces connect respectively that ammeter advances live wire, ammeter goes out to show live wire and load.

Claims (2)

1. a multi-functional controller for preventing illegal use of electricity comprises zero sequence current mutual inductor T ₁, two symmetric figure current transformer T ₂And T ₃, air switch K, controllable silicon V, capacitor C, it is characterized in that the breaking coil of the output termination air switch K of controllable silicon V, the input termination electric current mutual inductor T of controllable silicon V ₁, T ₂, T ₃Secondary L ₃, L ₅, L ₇And capacitor C, wherein T ₂, T ₃Secondary L ₅, L ₇Headtotail, T ₁Elementary L ₁, L ₂Meet electric power incoming line zero line and process normally closed interlock K respectively ₁Live wire on, T ₂Elementary L ₄Be connected on T ₁Elementary L ₂An end, T ₃Elementary L ₆One terminates at ammeter goes out hot terminal, another termination load wiring end, T ₁, T ₂Secondary L ₃, L ₅One terminates on the live wire T ₃Secondary L ₇A termination ammeter advance on the live wire end.

2. multi-functional controller for preventing illegal use of electricity according to claim 1 is characterized in that the input end of controllable silicon V is connected to resistance R.

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