CN2126596Y

CN2126596Y - Electric metre

Info

Publication number: CN2126596Y
Application number: CN 92228725
Authority: CN
Inventors: 王鲁
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-29
Filing date: 1992-07-29
Publication date: 1993-01-20
Anticipated expiration: 2002-07-29

Abstract

At present, the phenomena of using electric meter against rules can cause losses for the country. The utility model aims to provide an electric meter capable of monitoring the number of times for power utilization against rules which can cause the short circuit and inverted counting of electric meters, and the electric meter can be integrally mounted with the line of an existing electric meter. The utility model has the advantage of reliable use. The utility model is composed of a delayed relay, the circuit of the existing electric meter, an electric magnet and a mechanical counter.

Description

Electric metre

The utility model belongs to electric type

At present, there are a lot of phenomenons of watt-hour meter of using violating the regulations to take place,, watt-hour meter do not counted when electricity consumption, also have the reversal connection watt-hour meter, watt-hour meter is counted down, cause power supply department to sustain a loss as with the input and output terminal shortcircuit.At these problems, someone proposes to detect with the electromagnetic induction method current ratio of incoming line and current coil in electric meter, when both are unequal, provide the transgression for using electricity signal with a voltage comparator, with this signal enabling warning circuit or cut-out power supply, there are 3 weak points in this method: the one, and can not monitor the watt-hour meter reverse and count down; The 2nd, the sensing part is difficult to pack in the watt-hour meter, even when packing into, still can not monitor when the watt-hour meter external short circuit is powered; The 3rd, adopt microelectronic circuits to design and be subject to disturb, serviceability is unreliable.

The purpose of this utility model is to provide a kind of can monitor the transgression for using electricity number of times that makes the watt-hour meter short circuit and count down, and existing watt-hour meter be need not big repacking, and the service-strong watt-hour meter.

The utility model is by timing relay J ₁, electromagnet 2, mechanical counter 3, existing watt-hour meter circuit 4 form.Timing relay J ₁With connect power supply input end 6 after the input end of existing watt-hour meter circuit 4 is in parallel, 7(6 is a live wire, 7 be zero line), the live wire that has watt-hour meter circuit 4 output terminals now meets timing relay normally opened contact J _1-1, zero line meets power supply output terminal 9, electromagnet 2 one termination timing relay J ₁Normally closed contact J _1-2, the output terminal zero line of the existing watt-hour meter circuit 4 of another termination, timing relay J ₁Common J _1-3Connect power supply output terminal 8, mechanical counter 3 links to each other with electromagnet 2 and drives timing relay J by electromagnet 2 ₁, electromagnet 2, mechanical counter 3 with existing watt-hour meter circuit 4 with being loaded on.

Advantage of the present utility model is: the one, adopt " door monitoring " principle, and therefore monitor input, the difference of output both end voltage when starting, just can find to operate against regulations, simpler than inspection stream method; The 2nd, adopt low-voltage electrical apparatus in the design, good in anti-interference performance, because be the sequentially-operating principle, thus reliable operation, can misoperation and be failure to actuate, and long service life; The 3rd, existing watt-hour meter be need not to carry out big repacking, and also easy to install and use.

Accompanying drawing is the utility model circuit theory diagrams

Embodiment:

Timing relay J ₁Also connect power supply input end 6,7 with coil 10, power supply input end 7 directly links to each other with power supply output terminal 8, is zero line, coil 11 1 terminations power supply input end live wire, another termination timing relay J ₁Normally opened contact J _1-1, electromagnet 2 one termination timing relay J ₁Normally closed contact J _1-2, other end connecting to neutral line, mechanical counter 3 link to each other with electromagnet 2 and drive timing relay J by electromagnet 2 ₁Common J _1-3Connect power supply output terminal 8, with timing relay J ₁, coil 10,11, electromagnet 2, mechanical counter 3 watchcase 12 of packing into promptly forms the utility model watt-hour meter.Principle of work: during normal electricity consumption, supply voltage is by input end 6,7 inputs, after time-delay, and timing relay J ₁Action, timing relay J ₁By normally closed contact J _1-2Be transformed into normally opened contact J _1-1, 8 conductings of power supply output terminal, power supply output terminal 8,9 can outwards be powered.When reversal connection the utility model watt-hour meter violating the regulations, when supply voltage is imported by 8,9 ends, electromagnet 2 actions, 3 actions of driving device formula counter are once noted the transgression for using electricity operation, and because of relay J ₁Be failure to actuate normally closed contact J _1-2All the time connect electromagnet 2, current coil 11 of the present utility model is the access failure power supply all the time, so 6,7 end no-voltages output this moment; Work as transgression for using electricity, short circuit 6,8 two ends (shown in the accompanying drawing dotted line), when supply voltage is imported from 6,7 two ends, 8,9 two ends simultaneously electric, electromagnet 2 conductings are because timing relay J ₁Deferred action, electromagnet 2 action earlier, mechanical counter 3 is noted the transgression for using electricity operation once, after this, timing relay J ₁Action is by normally closed contact J ₁-2 are transformed into normally opened contact J _1-1, electromagnet 2 automatically resets, but mechanical counter 3 is steppings, and the number that is write down can not reset, as does not have transgression for using electricity again, and the number of this record is forever constant.

Claims

1, watt-hour meter comprises existing watt-hour meter circuit 4, it is characterized in that also comprising timing relay J ₁, electromagnet 2, mechanical counter 3, timing relay J ₁Be connected between power supply input end live wire and the zero line, and link to each other with the input end of existing watt-hour meter circuit 4, the output terminal live wire of existing watt-hour meter circuit 4 meets timing relay normally opened contact J _1-1, zero line meets power supply output terminal 9, electromagnet 2 one termination timing relay J ₁Normally closed contact J _1-2, the output terminal zero line of the existing watt-hour meter circuit 4 of another termination, timing relay J ₁Common J _1-3Connect power supply output terminal 8, mechanical counter 3 links to each other with electromagnet 2 and drives timing relay J by electromagnet 2 ₁, electromagnet 2, mechanical counter 3 be fitted together with existing watt-hour meter circuit 4.