CN202126498U - On-site detector for single-phase electric energy meter - Google Patents

Abstract

A single-phase electric energy meter field detector, which includes a box body, a detection circuit installed in the box body, and test leads; the box body is divided into three layers in the longitudinal direction: that is, the space between the measuring test leads on the left and the electrical equipment 7, the switchgear and the circuit in the middle Interval 8, 1kW pure resistance load interval 9 on the right side; two measuring probe jacks 1, self-resetting button switch 2, power indicator light 3, voltmeter 4, ammeter 5 are installed on the upper surface of the interval between the measuring probe and the electrical appliance; the switch The upper surface of the equipment and circuit interval is equipped with a portable handle 6; the right surface of the 1kW pure resistance load interval is provided with a plexiglass observation hole 11; the detection circuit is composed of a fuse, a power indicator light, a leakage circuit breaker, an ammeter, a 1kW pure resistance load and voltage The parallel branches of the meter are connected in series together. The utility model adopts the load method to detect the single-phase electric energy meter, which is low in cost, convenient to use, and easy to carry; it is easy to quickly detect whether the single-phase electric energy meter is running normally, and is convenient for on-site repair and maintenance.

Description

Single-phase electric energy meter field detector

technical field

The utility model belongs to the technical field of power supply and power distribution.

Background technique

On the site of electricity consumption, criminals often forge or open the seal of the energy meter sealed by the power supply company, deliberately damage the power metering device of the power supply company, or use other methods to deliberately make the power metering device of the power supply company inaccurate or invalid to steal electricity, which endangers the power supply company. The order of electricity consumption has caused a large loss of state-owned assets and seriously damaged the interests of power supply companies. When electricity inspectors inspect single-phase electric energy meters on site, it is difficult to judge whether the electric energy meters are running normally because they do not have portable load equipment and professional testing instruments.

Contents of the invention

The purpose of this utility model is to solve the above problems and provide a single-phase electric energy meter on-site detector that can quickly detect whether the single-phase electric energy meter is running normally by using the load method, which is easy to operate, easy to repair and maintain.

The technical scheme of the utility model is designed as follows: a single-phase electric energy meter field detector, which is characterized in that it includes a box body 10, a detection circuit and a meter pen installed in the box body 10; the box body 10 is divided into three layers vertically Interval: namely, the interval 7 between the measuring pen and the electrical appliance on the left, the interval 8 between the switchgear and the circuit in the middle, and the interval 9 between the 1kW pure resistance load on the right; two measuring probe jacks 1 are installed on the upper surface of the interval 7 between the measuring pen and the electrical appliance , Self-resetting button switch 2, power indicator light 3, voltmeter 4, ammeter 5; switchgear and circuit compartment 8 are provided with a portable handle 6 on the upper surface; 1kW pure resistance load compartment 9 is provided with a plexiglass observation hole 11 on the right surface; The detection circuit is composed of a fuse, a power indicator light, a leakage circuit breaker, an ammeter, a 1kW pure resistance load and a parallel branch of a voltmeter connected in series.

The utility model adopts the load method to detect the single-phase electric energy meter, which is low in cost, convenient to use, and easy to carry; it is easy to quickly detect whether the single-phase electric energy meter is running normally, and is convenient for on-site repair and maintenance.

Description of drawings

Fig. 1 is a schematic diagram of the detection circuit of the present invention.

Fig. 2 is a schematic diagram of the appearance of the utility model.

In the figure 1——measurement test lead jack; 2—self-resetting button switch; 3—power indicator light; 4—voltmeter; 5—ammeter; 6—portable handle; 7—measurement test lead and electrical appliances Interval; 8—Switch equipment and circuit interval; 9—1kW pure resistance load interval; 10—Box; 11—Plexiglass observation hole; BX—Fuse; D—Power indicator light; K—Leakage Circuit breaker; A—ammeter; V—voltmeter; R—1kW pure resistance load.

Detailed ways

It can be seen from Fig. 1 that the detection circuit of the present utility model is composed of fuse BX, power indicator light D, leakage circuit breaker K, ammeter A, 1kW pure resistance load R and voltmeter V in series. When testing, connect the series detection circuit to the output terminal of the single-phase electric energy meter. The fuse BX can be 5A, which protects the detection circuit from overload and short circuit; the power indicator D is used to indicate whether the power supply has electricity; the leakage circuit breaker K can be 20A, which can protect overload, short circuit and leakage; the ammeter A can be 20A , to measure the current of the series detection circuit; the voltmeter V uses 250V to measure the voltage at both ends of the load; the 1kW pure resistance load R can be used such as iodine tungsten lamp, etc., to provide the detection standard load power; the capacity of the circuit connecting wires and terminals is not less than 20A.

It can be seen from Fig. 2 that the utility model includes a box body 10, and the box body 10 is longitudinally divided into three intervals: that is, the interval between the measuring pen and the electrical appliance on the left is 7, the switchgear and circuit interval in the middle is 8, and the 1kW pure resistance load interval on the right is 9 . On the upper surface of the interval 7 between the measuring lead and the electrical appliance, there are two measuring lead jacks 1 (the measuring lead adopts a direct contact type with an insulating handle, and the capacity of the contact and the connecting soft insulated wire is not less than 250V/20A), a self-resetting button Switch 2, power indicator light 3, voltmeter 4, ammeter 5. The upper surface of the switchgear and circuit compartment 8 is equipped with a portable handle 6. The right surface of the 1kW pure resistance load compartment 9 is provided with a plexiglass observation hole 11. The detection circuit is composed of a fuse BX, a power indicator light 3, a leakage circuit breaker K, an ammeter 5, a 1kW pure resistance load R and a parallel branch of the voltmeter 4 connected in series.

At present, the electric energy meter counter uses two kinds of measurement degrees, pulse signal and mechanical turntable respectively. The utility model is used for detection. When the meter is normal, the 1min pulse or the mechanical turntable records a fixed value. When the meter is out of alignment, the 1min pulse signal and There is a certain error between the recorded value of the mechanical turntable and the normal recorded value. When using this tester, use a stopwatch to record the 1min pulse signal of the electric energy meter and the recorded value of the mechanical turntable. If there is a certain error with the 1min pulse signal or the fixed value recorded by the mechanical turntable when the meter is normal, the inaccuracy of the electric energy meter can be judged. It is judged in time that the electric energy meter is not operating normally.

Claims (1)

1. A single-phase electric energy meter field detector, characterized in that: it includes a box body (10), a detection circuit installed in the box body, and a test lead; the box body is divided into three layers in the vertical direction: the left measuring test lead and electrical appliances Interval (7), switchgear and circuit interval (8) in the middle, 1kW pure resistance load interval (9) on the right; two measuring instrument lead jacks (1) are installed on the upper surface of the measuring instrument lead and electrical appliance interval (7) , self-resetting button switch (2), power indicator light (3), voltmeter (4), ammeter (5); switchgear and circuit compartment (8) with a portable handle (6) on the upper surface; 1kW pure resistance load compartment The right surface of (9) is provided with plexiglass observation hole (11); Detection circuit is to be made up of fuse, power indicator light, leakage circuit breaker, ammeter, 1kW pure resistance load and the parallel branch of voltmeter together in series.

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