KR200387363Y1 - A Terminal Block of Electronic Meter - Google Patents

Abstract

The present invention relates to an electronic wattmeter for use in buildings and factories, such as a general house, a building, etc. In an electronic wattmeter having a terminal block into which a power supply side wire and a load side wire are inserted, respectively, The wire insertion hole is formed, but the adjacent wire insertion holes are formed so as to be disposed at positions above and below one side inclined at a predetermined distance from each other, so that the wire insertion holes of the terminal block are not formed on one plane. The wire insertion hole is formed at the upper and lower positions inclined at a certain angle to each other to reduce the width of the main body, thereby minimizing the size of the installation space, and to secure safety when connecting and wiring the wires by reliably blocking the contact between adjacent wires. It is designed to replace only the terminal block, so it can be replaced with a single mold. The amount of power meter, watt-hour meter and economical small volume, such as drastically reducing the manufacturing cost of the product to achieve shared use of different models, it is useful in devising an advantage that can be safely used as long-term durability while minimizing the risk of leakage.

Description

Terminal Block of Electronic Meter

The hardship relates to an electronic wattmeter used in a general house, a building such as a building or a factory, etc., and more specifically, does not form a wire insertion hole into which a terminal is inserted to connect each wire on a single plane. Regarding the terminal block of the electronic electricity meter, the adjacent electric wire insertion holes are formed at the upper and lower positions inclined at a certain angle to ensure the safety by blocking the contact between the adjacent electric wires, while reducing the width of the main body and minimizing the overall size. will be.

A power meter is a device that measures various power consumption such as active power (kWh), reactive power (kvarh), demand power (Demand) and power factor (PF) within an allowable error range and displays the value. It is divided into (induction) electricity meter and electronic (digital) electricity meter.In general, the electronic electricity meter receives the voltage and current signals to measure the amount of power used in buildings, factories, and so on. It is used to display on the display unit, and a plurality of signal input / output lines such as electric energy usage, load control and remote meter reading are connected.

Such an electronic watt-hour meter is provided on the lower surface of the main body 1 with the display unit 2 indicating the amount of power used, as shown in FIG. 1, between the supply facility of the power supplier (KEPCO) and the premises electrical facility of the power user (customer). It has a terminal block (3) for connection.

As shown in FIG. 2, the terminal block 3 has a plurality of wire insertion holes 4 in which power supply side wires 6 and 6 'and load side wires 7 and 7' are respectively inserted in-line (in-line). And insert the wires (6, 6 ', 7, 7') into each of these wire insertion holes (4) and tighten them with the respective fixing screws (5) to supply the power supply and the load side of the power supplier. It connects the electrical equipment of the power users' premises.

By the way, each of the wire insertion holes 4 formed in the terminal block 3 of the conventional electronic watt-hour meter has the same structure and is arranged on the same plane of one horizontal plane and is separated by only the partition wall of the terminal block 3. . This arrangement structure of the terminal block 3 is not able to reduce the width of the main body, so that the overall size is increased, there is a disadvantage that can not achieve a compact power meter, in particular, there are many electric wires to connect a lot like three-phase When the main body becomes wider and the size of the entire electricity meter becomes larger, it causes various problems such as being limited by the space for installing the electricity meter.

In addition, since the wire insertion holes 4 are formed in a structure arranged on the same plane of one horizontal plane, the possibility of adjacent wires coming into contact with each other and short-circuited inadvertently during connection and wiring work of the wires also increases.

The present invention has been made to solve the various problems and shortcomings of the conventional electronic electricity meter, and do not form the wire insertion hole of the terminal block on one plane, and inclined adjacent wire insertion holes at an angle to each other. The purpose is to provide a compact electronic watt-hour meter that is formed in the upper and lower positions by reducing the width of the body to minimize the size of the installation space to minimize the installation space.

Another object of the present invention is to provide an electronic wattmeter that can ensure the safety of work in the connection and wiring work of the wire by reliably blocking the contact between adjacent wires.

Another object of the present invention is to replace only the terminal block can achieve a large number of models, such as large-capacity meter, small-capacity meter by using a single mold can greatly reduce the manufacturing cost of the product to provide an electronic electricity meter with excellent economic efficiency will be.

Another object of the present invention is to provide an electronic power meter that can be used for a long time safely with high durability while minimizing the risk of a short circuit by arranging adjacent wire insertion holes at a predetermined angle up and down.

The terminal block of the present invention electronic wattmeter for achieving the above object is an electronic wattmeter having a terminal block in which the power supply side wire and the load side wires are inserted, respectively, to form a plurality of wire insertion holes at the bottom of the terminal block, Adjacent wire insertion holes are characterized in that formed so as to be disposed at a position up and down one side inclined at a predetermined distance from each other.

The angle of inclination between the adjacent wire insertion holes is set within a range of 10 ° to 80 °, if necessary, and is preferably 30 ° to 60 °.

Hereinafter, with reference to the accompanying drawings will be described in detail the terminal block of the present invention electronic wattmeter.

3 is a perspective view showing a first embodiment of the electronic wattmeter employing the present invention, Figure 4 is an internal connection diagram of the electronic wattmeter shown in Figure 3, the electronic wattmeter is a wattmeter with a display unit 12 indicating the amount of power used The terminal block 10 is configured below the main body 11 to interconnect the supply equipment of the power supplier on the power side and the premises electrical equipment of the power user on the load side.

The terminal block 10 shown in Figs. 3 and 4 is for single phase, and a body made of hard plastic as an insulating material is integrally formed with the electricity meter body 11, and the power supply wires 6 and 6 'are provided at the bottom of the body. load side wires (7,7 '), the four wire insertion holes are inserted, respectively (I _6, I _6', O _7, O _{7 ')} is, the insertion hole 4 of wires (I _6, I ₆ there is formed _", O ₇ and O _{7 ′} ) are each arranged in positions above and below one side that are inclined at a predetermined angle with a predetermined distance from adjacent wire insertion holes. That is, the power source side wires (6) leave the insertion wire insertion hole (I ₆₎ a predetermined distance in the right upward direction at an angle inclined in that the power source side wires (6 ') is inserted electric wire insertion hole (I ₆ is _") is formed The wire insertion hole O ₇ into which the load side wire 7 is inserted is a wire insertion hole I into which the power side wire 6 is inserted at a predetermined distance from the wire insertion hole I ₆ into which the power side wire 6 is inserted. ₆ ) is formed on the same plane of the horizontal plane, the wire into which the load side wire (7 ') is inserted at a certain distance in the upper right direction inclined at a certain angle from the wire insertion hole (O ₇ ) into which the load side wire (7) is inserted An insertion hole O _{7 ′} is formed.

Reference numeral 9 denotes a cable insertion hole for inserting a cable for metering and communication such as gas, water, hot water, and heat.

Therefore, the wire insertion hole (I ₆₎ as shown in Figure 5 and forming a horizontal insertion conventional wire indicated by the dotted line positioned on the same plane as holes (I _{6 ')} and the electric wire of the present invention indicated by the solid line insertion hole (I _If the angle between _{6 '} ) is θ, cosθ = (r-a) / r, so that the load side is formed by the length a in the formation of the wire insertion holes I ₆ and I _6' into which the power supply side wires 6 and 6 'are inserted. In the formation of the wire insertion holes O ₇ and O _{7 ′} into which the wires 7 and 7 ′ are inserted, the width of the wattmeter can be reduced by the length a and the total length 2a. For example, if r is 1.5cm, when θ is 30 °, cosθ = √3 / 2, so √3 / 2 = (1.5-a) /1.5, so 2a = 3-1.5√3, that is, the width of the electricity meter Can be reduced by (3-1.5√3) cm.

Similarly, when θ is 45 °, cosθ = 1 / √2, so 1 / √2 = (1.5-a) /1.5, so 2a = 3-1.5√2, that is, the width of the meter is (3-1.5√2) cm If θ is 60 °, cosθ = 1/2, so 1/2 = (1.5-a) /1.5, and 2a = 3-1.5, that is, the width of the agometer can be reduced by 1.5 cm. .

Therefore, the inclination angle θ can be appropriately selected within the range of 10 ° to 80 ° if necessary. However, the larger the angle, the smaller the width of the body of the titrator can be, while the larger the thickness, the greater the range of 30 ° to 60 °. It is preferable to select within.

FIG. 6 is a perspective view showing a second embodiment of an electronic wattmeter employing the present invention, and FIG. 7 is an internal connection diagram of the electronic wattmeter shown in FIG. 6, wherein the electronic wattmeter includes a power meter having a display unit 12 indicating power consumption. The terminal block 10 is configured below the main body 11 to interconnect the supply equipment of the power supplier on the power side and the premises electrical equipment of the power user on the load side.

The terminal block 10 shown in Figs. 6 and 7 is for three-phase use, the power supply wires 6 ₁ , 6 ₂ , 6 ₃ , 6 ₀ and the load side wires 7 ₀ , 7 ₁ , 7 ₂ , 7 ₃ ) 8 wire insertion holes (I ₁ , I ₂ , I ₃ , I ₀ ) and (O ₀ , O ₁ , O ₂ , O ₃ ) are formed. I ₁ , I ₂ , I ₃ , I ₀ ), (O ₀ , O ₁ , O ₂ , O ₃ ) are each arranged in a position above and below one side inclined at an angle with a distance from the adjacent wire insertion hole have. That is, the power source side wires _(60), the wire insertion that the insertion cavity (I ₀₎ inserted at an angle inclined at a distance in the left upper direction power source side wires ₍₆₃₎ are inserted wires is in the hole (I ₃₎ are formed The wire insertion hole I ₂ into which the power supply side wire 6 ₂ is inserted is inserted into the power supply wire 6 ₀ at a predetermined distance from the wire insertion hole I ₀ into which the power supply side wire 6 ₀ is inserted. It is formed on the same plane of the hole (I ₀ ) and the horizontal plane, the power supply side wire (6 ₁ ) with a certain distance in the sinusoidal direction inclined a certain angle from the wire insertion hole (I ₂ ) into which the power supply side wire (6 ₂ ) is inserted. The wire insertion hole I ₁ to be inserted is formed.

This also load side wire wire insertion hole (O ₁₎ that ₍₇₀₎ at a distance to an angle oblique upper right direction in the wire insertion hole (O ₀₎ is to be inserted into the load side wire ₍₇₁₎ is inserted is formed, and The wire insertion hole O ₂ into which the load side wire 7 ₂ is inserted is a wire insertion hole into which the load side wire 7 ₀ is inserted at a predetermined distance from the wire insertion hole O ₀ into which the load side wire 7 ₀ is inserted. It is formed on the same plane of (O ₀ ) and the horizontal plane, and the load side wires 7 ₃ are placed at a certain distance in the upper right direction inclined at a predetermined angle from the wire insertion hole O ₂ into which the load side wires 7 ₂ are inserted. The wire insertion hole O ₃ to be inserted is formed.

Therefore, as shown in FIGS. 8A and 8B, the power supply side is 2a, and the load side is 2a as compared to the single phase described in FIG. 5 in comparison with the three-phase power meter in which eight wire insertion holes are formed on one plane of the conventional horizontal plane. As a result, it is possible to reduce the width of the total meter 4a.

4 is a single-phase internal wiring diagram of an electronic wattmeter employing the present invention, Figure 9 is a three-phase internal wiring diagram of an electronic wattmeter employing the present invention, PT is a potential transformer, CT is a current transformer (Current Transformer) Indicates. Therefore, the electronic wattmeter adopting the present invention, like the general electronic wattmeter, detects and measures the current flowing through the wire in which the CT is installed, and multiplies, integrates, etc. by means not shown inside the wattmeter. The amount of power used is displayed on the display unit 12, which is an LCD, and the power input from the power supply line is sensed to display an image formation state on the display unit 12.

In addition, when the input power is cut off, the instantaneous accumulated current power amount is stored in a memory chip (not shown), and when the power is applied again, the accumulated power amount stored in the memory chip is displayed again on the display unit 12.

Although the present invention has been described as an example of the case of single phase and three phase, the present invention is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, even if there are more than eight insertion holes for the power supply side and the load side wiring, such as the test terminal block for the transformer part meter, the width of the terminal block can be increased by forming adjacent wire insertion holes for connecting the wires at a predetermined angle from each other. The more wire insertion holes, the smaller the width of the terminal block and the smaller the total electricity meter.

The present invention described above does not form the wire insertion hole of the terminal block on one plane, but forms the adjacent wire insertion holes at upper and lower positions inclined at an angle to each other to reduce the width of the main body to minimize the size of the installation space. Receiving as little as possible, there is a particular advantage that can ensure the safety of work when connecting and wiring work by blocking the contact between adjacent wires reliably.

In addition, by designing only the terminal block to be replaced, it is possible to achieve the common use of various models such as a high-capacity meter and a small-capacity meter by using a single mold, which can greatly reduce the manufacturing cost of the product. It is arranged in the upper and lower positions of the photo to minimize the risk of leakage and has the advantage of being able to use safely for a long time with high durability.

1 is a front view showing a conventional electronic electricity meter,

2 is a perspective view showing a terminal block of a conventional electronic electricity meter,

3 is a perspective view showing a first embodiment of an electronic wattmeter employing the present invention,

4 is an internal connection diagram of the electronic wattmeter shown in FIG.

5 is a view for explaining a wattmeter width reduced by the present invention,

Figure 6 is a perspective view showing a second embodiment of the electronic wattmeter employing the present invention,

7 is an internal connection diagram of the electronic wattmeter shown in FIG. 6,

8A and 8B are diagrams for describing a wattmeter width reduced by the present invention.

<Explanation of symbols for the main parts of the drawings>

1 power meter body 2 display unit

3: terminal block 4: wire insertion hole

5: Set screw 6, 6 ': Power side wire

6 _0, 6 ₁ , 6 ₂ , 6 ₃ ,: Power side wire 7, 7 ': Load side wire

7 ₀ , 7 ₁ , 7 ₂ , 7 ₃ : Load side wire 9 cable insertion hole

10: terminal block 11: power meter body

12: display unit

I ₁ , I ₂ , I ₃ , I _0, I ₆ , I _{6 '} : Power cable insertion hole

O ₀ , O ₁ , O ₂ , O ₃ , O ₇ , O _{7 '} : Wire insertion hole on the load side

PT: Instrument Transformer CT: Instrument Current Transformer

Claims (2)

An electronic wattmeter having a terminal block into which a power supply wire and a load wire are respectively inserted and formed, wherein a plurality of wire insertion holes are formed at the bottom of the terminal block, and adjacent wire insertion holes are inclined at a predetermined distance from each other. The terminal block of the electronic watt-hour meter, characterized in that it is formed so as to be positioned in the upper and lower sides. The terminal block of the electronic watt-hour meter according to claim 1, wherein the inclination angle between the adjacent wire insertion holes is 30 ° to 60 °.