JP3014138U - Lighting shared transformer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a transformer for shared use of lighting, which is economical and saves space while prolonging the life of electrical products. [Structure] The primary side has a Y connection 2 and the secondary side has a Δ connection 8, and the primary side input terminal 3 has a single-phase dedicated cross winding connection.
Input a high voltage of 6600V between U point, V point and W point, and input 21 between U point 13, V point 14 and W point 15 of the secondary side 3 phase.
Outputs a 3-phase voltage for power of 0V, and also V point 14 and W point 15
Between 210V, V ₁ point 17 and W ₁ point 18 200V, V
Two-phase voltage for electric light of 105V between point 14 and O point 16, 105V between W point 15 and O point 16, 100V between V ₁ point 17 and O point 16 and 100V between W ₁ point 18 and O point 16 Light-source shared transformer 1 that outputs

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a common lighting transformer that receives commercial three-phase high-voltage power of 6600 V or the like from the primary side and outputs a single-phase voltage for electric lights of 105 V and a three-phase voltage for power of 210 V from the secondary side.

[0002]

[Prior art]

 In the conventional shared transformer for lights, a commercial three-phase high-voltage power of 6600V or the like input from the primary side is used as a single-phase and a three-phase power voltage of 210V in three phases from the secondary side of the Δ connection or V connection. It outputs 210V and 105V, which are several volts higher than the quasi-voltages of 100V and 200V, and a single-phase voltage for a lamp. This is set to 210V which is slightly higher than 200V and 105V which is slightly higher than 100V in consideration of the voltage drop during power transmission and the fluctuation of the voltage due to the load. Electrical appliances operate normally in the range of 90V to 110V according to the Electrical Appliance and Material Control Law. It can be seen by taking a light bulb as an example, but as shown in Table 1, the life of a rated 100V light bulb is shown. When used at a voltage of 100 V, the life is about 1000 hours, but when used at 105 V, the life is about half that, and when used at 95 V, the life is about twice as long.

[0003]

[Table 1]

Therefore, if the 105 V single-phase voltage for electric light output from the common lighting transformer is used, not only the life of the electric product is shortened but also the power consumption is increased, which is uneconomical. It was In order to solve this problem, 105V and 210V single phase voltage for electric lights may be stepped down to 100V by another transformer. In this case, it is a common lighting transformer and a transformer stepped down to 100V. Was necessary, and there were problems that the cost was high and that space was taken up.

[0005]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to solve these conventional problems, to prolong the life of electrical products, and to provide an economical and space-saving transformer for shared lighting.

[0006]

[Means for Solving the Problems]

 The configuration of the present invention which has solved such a problem is as follows: 1) Commercial three-phase high-voltage power is input to the three-phase primary winding, and a single-use lamp for a voltage of several volts higher than 100 V from the secondary winding. In a shared lighting transformer that outputs a phase voltage and a reduced three-phase power voltage, output a 100V single-phase voltage for lighting from the secondary winding separately from the single-phase voltage for lighting. 2) Single transformer for exclusive use of lighting 2) Outputting a single-phase voltage for electric lamp of several volts higher than 100V and a single-phase voltage for electric lamp of 100V from the secondary side single-phase dedicated cross winding connection It is in the listed transformer for lighting. The primary side of the present invention includes a case of Y connection, a case of Δ connection, and a case of V connection. In addition, there are cases of Δ connection and V connection on the secondary side.

[0007]

[Action]

 As described above, according to the present invention, if commercial three-phase high voltage power is input to the primary winding, the three-phase power three-phase voltage stepped down by the secondary winding and at least 100 V It outputs two kinds of two-phase two-phase voltage for lighting, a voltage higher by several volts and a voltage of 100V. Motors that are in contact with the three-phase voltage for power, and connect electrical products with a rating of 100V, such as fluorescent lamps for lighting, to the two-phase voltage for 100V two-phase electric lights, and prevent voltage drop below 100V. -Use electric appliances such as refrigerators, TVs, and air-conditioning fans by connecting them to a two-phase voltage for two-phase electric lights, which is several volts higher than 100V. As a result, a voltage of 100V can be applied to a lighting appliance with a rating of 100V, which can be used without imposing an extra load on the lighting appliance, and the life of the lighting appliance can be shortened. In addition, it will be economical without wasteful power consumption. As described in claim 2, in the case where two kinds of single-phase voltages for electric lights, that is, a voltage several volts higher than 100 V and a voltage of 100 V are output from the secondary-side single-phase dedicated cross winding connection, this single-phase A stable 100V single-phase voltage for electric lights can be output from the dedicated cross winding connection, and if the load of the electric product connected to this 100V single-phase voltage for electric lights is balanced, the three phases on the primary side are also balanced. , A single-phase voltage of 100 V for electric lights is applied. Lighting appliances are not affected by voltage drop.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Example 1 of FIG. 1 is an example in which the primary side is a Y connection and the secondary side is a Δ connection, and one winding on this secondary side is a single-phase dedicated cross winding connection. The second embodiment in FIG. 2 is an example in which the primary side is a Y connection and the secondary side is a Δ connection. 1 is a connection diagram showing the first embodiment, and FIG. 2 is a connection diagram showing the second embodiment.

Example 1 (see FIG. 1) In the figure, reference numeral 1 is a common lighting transformer, 2 is a Y connection on the primary side of the common lighting transformer 1, 3 is a U point / V point on the primary side・ Input terminal at point W, 4 is a primary winding, 5 is a primary winding, 6 is a primary winding, 8 is a Δ-connection on the secondary side of the shared lighting transformer 1, 10 is a secondary side winding, 11 is a secondary side winding, 12 is a secondary side winding, 13 is a U point of the secondary side output terminal, 14 is a V point of the secondary side output terminal , 15 is the W point of the secondary side output terminal, 16 is the O point which is the neutral point of the secondary side output terminal, 17 is the V ₁ point of the secondary side output terminal, 18 is the secondary side output It is the W ₁ point of the terminal.

In the first embodiment shown in FIG. 1, the primary side has a Y connection 2 and the secondary side has a Δ connection 8, and a U-point / V that is an input terminal 3 on the primary side that has been subjected to a single-phase exclusive cross winding connection. A high voltage of 6600 V is input between points W and W, and a three-phase voltage for power of 210 V is output between U point 13, V point 14 and W point 15 on the secondary side, and V point 14 210V between W point 15 and 200V between V ₁ point 17 and W ₁ point 18 and 105V between V point 14 and O point 16 and 105V between W point 15 and O point 16 and V ₁ point 17 and O point 16 Two-phase voltage for electric lamp of 100V is output between 100V and W ₁ point 18 and O point 16. With this, connect an electric product for lighting such as a fluorescent lamp with a rated voltage of 100V between V ₁ point 17 and O point 16 or between W ₁ point 18 and O point 16 and apply a voltage of 100V to the electric product. Can be done. The electrical appliances for lighting to which the rated voltage of 100V is applied have a longer life than the item to which the voltage of 105V is applied, and the applied voltage becomes 100V, which is a 5% reduction. It became very economical because the power consumption was reduced by 10%. Lighting such as fluorescent lights in the room is supplied from the 100V two-phase voltage for electric lights, but for electric appliances such as motors, refrigerators, TVs, fans for air conditioning, etc., which are affected by voltage drop, 105V two-phase voltage for electric lights. In addition, in the shared transformer 1 of the first embodiment, as shown in the wiring diagram shown in FIG. 1, the neutral winding O point 16 and V ₁ point 17 and W ₁ Since the point 18 is pulled out, if an electric product with a balanced load is connected to the V ₁ point 17 and the O point 16 or the W ₁ point 18 and the O point 16, the three-phase side will also be balanced. Electric appliances are applied with a voltage of 100 V without being affected by the surroundings. In this way, since one lighting shared transformer 1 can output a 100V two-phase voltage for electric lights, a separate transformer for converting 105V two-phase voltage for electric lights to 100V is not required. Not only will it go down, but it will not take up space at the location where the shared transformer for lighting 1 is installed.

Embodiment 2 (see FIG. 2) Reference numeral 20 in FIG. 2 is a common lighting transformer. In Example 2 shown in FIG. 2, the primary side has a Y connection 2 and the secondary side has a Δ connection 8, and V ₁ point 17 and W ₁ point 18 and a neutral point O from one winding on this secondary side. It is an example of the common lighting transformer 20 that draws out the point 16 and outputs a two-phase voltage for electric light of 100 V between the V ₁ point 17 and the O point 16 and 100 V between the W ₁ point 18 and the O point 16. Other symbols and effects are the same as those in the first embodiment. There are cases of Y connection and V connection on the primary side. Further, the secondary side is not limited to the Δ connection, but may be Y connection or V connection.

[0012]

[Effect of device]

 As described above, according to the present invention, the single-phase voltage for electric lights of 100 V is output from the secondary side separately from the single-phase voltage for electric lights of several volts higher than 100 V without the need for another transformer. It is very economical because it does not occupy a lot of installation space, does not shorten the life of electrical products for lighting rated at 100V, and eliminates the waste of power consumption of these electrical products. If a 100V two-phase voltage for the electric lamp is output from the secondary side single-phase cross winding wire as described in claim 2, a large electric current fluctuation caused by the influence of the surroundings can be prevented and 100V can be prevented. Since the two-phase voltage for electric lamps of this type is prevented from becoming unstable and is output in a stable manner, it is possible to prevent electric products from consuming unnecessary electric power, resulting in a significant power saving effect and economical. became.

[Brief description of drawings]

FIG. 1 is a connection diagram illustrating a first embodiment.

FIG. 2 is a connection diagram showing a second embodiment.

[Explanation of symbols]

1 common transformer for lighting 2 Y connection 3 Input terminal 4 Winding 5 Winding 6 Winding 7 Missing number 8 △ Connection 9 Missing number 10 Winding 11 Winding 12 Winding 13 U point 14 V point 15 W point 16 O point 17 V ₁ point 18 W ₁ point 19 Missing number 20 Lighting shared transformer

Claims (2)

[Scope of utility model registration request] 1. A commercial single-phase high-voltage power is input to the primary winding of the three-phase, and a single-phase voltage for electric lamp which is several volts higher than 100V and a three-phase power for which is stepped down from the secondary winding. A shared lighting transformer that outputs a voltage and a single-phase voltage for lighting of 100 V from the winding on the secondary side separately from the single-phase voltage for lighting. 2. From the secondary side single phase exclusive cross winding connection 1
Single-phase voltage for electric lamps, which is several volts higher than 00V, and 100
The lighting transformer according to claim 1, which outputs a V single-phase voltage for electric lights.