JPH0657012U - Transformer device for gas insulation instrument - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to make it possible to easily install a rectangular instrument transformer at a predetermined position in a cylindrical container. [Structure] A resin casting instrument transformer is housed in a cylindrical container together with insulating gas. The primary conductor led out to the upper part of the instrument transformer is connected to the conductor attached to the insulating spacer provided at the upper part of the cylindrical container. This conductor is connected to a connecting conductor that passes through a tank connected to the upper part of the cylindrical container. A mounting plate is fixed to the bottom of the instrument transformer, a large hole is provided in the bottom cover that closes the bottom of the cylindrical container, and the mounting plate is fixed to the bottom cover by bolts passing through this hole. The movable bolt in the hole allows the position of the instrument transformer to be adjusted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transformer device for gas-insulated instruments.

[0002]

[Prior art]

 In a combined switchgear in which switchgear such as a gas-insulated circuit breaker and disconnector is integrated with a grounding device and other devices, a gas-insulated instrument transformer is combined together. Is configured. It is conceivable to use a film-insulated winding type transformer for the instrument used here, but this type is expensive, so an inexpensive instrument made by casting a resin such as epoxy resin is used. It is desirable to use a transformer.

However, since the resin-casting instrument transformer is configured for indoor use in the air, it is generally rectangular because of its installation space. On the other hand, the container that houses the gas-insulated equipment is generally in the shape of a closed cylinder, and a tank through which a conductor connected to the primary conductor passes is connected to the upper part of the container. Therefore, it is extremely troublesome to install a rectangular instrument transformer in the cylindrical container so that the primary conductor of the instrument transformer is located at the center of the cylindrical container.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to make it possible to easily install a rectangular instrument transformer at a predetermined position in a cylindrical container.

[0005]

[Means for Solving the Problems]

 The present invention stores a resin-molded instrument transformer together with an insulating gas in a cylindrical container, and the primary conductor led to the upper part of the instrument transformer is connected to an insulating spacer provided on the upper part of the cylindrical container. In a configuration in which it is connected to an attached conductor, and this conductor is connected to a connecting conductor that passes through the inside of the tank connected to the top of the cylindrical container, the mounting plate is fixed to the bottom of the instrument transformer, and the cylindrical container It is characterized in that a large hole is provided in the bottom lid that closes the bottom of the, and the mounting plate is fixed to the bottom lid by bolts passing through this hole.

[0006]

[Action]

 The instrument transformer is attached to the bottom lid of the cylindrical container together with its mounting plate, but the holes through which the bolts used to attach it are made large enough that they are so-called stupid holes. The relative position of the plates can be adjusted arbitrarily. Then adjust this position appropriately so that the primary conductor is attached to the conductor attached to the insulating spacer, for example, the center of the cylindrical container, and then bolt to the bottom lid at that position. Fix the mounting plate.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. A cylindrical container 1 is filled with an insulating gas. An insulating spacer 3 is fixed to an upper lid 2 of the cylindrical container. A conductor 4 is attached to the insulating spacer 3 by a flange 5. A tank 6 is connected to the upper lid 2, and a connecting conductor 7 passes through the inside of the tank 6. The connecting conductor 7 is connected to the conductor 4 via a sliding contact 8.

Reference numeral 9 is a transformer for an instrument, which is formed by casting epoxy resin, for example, and 10 is its primary conductor. The primary conductor 10 is connected to the conductor 4 by way of the sliding contact 11 so that it is connected to the connection conductor 7.

A mounting plate 12 is fixed to the bottom of the instrument transformer 9 by bolts 13. A bottom lid 14 of the cylindrical container 1 is attached to the cylindrical container 1 with bolts 15. The bottom lid 14 is provided with a sufficiently large hole 16 so that the mounting plate 12 can be attached to the bottom lid 14 by a bolt 17 passing through the hole 16.

When the instrument transformer 9 is installed in the cylindrical container 1 at a position where its primary conductor 10 coincides with the conductor 4, for example, at the center of the cylindrical container 1, the mounting plate mounted on the bottom cover 14 The bolt 17 screwed into 12 is moved appropriately in the hole 16 and the position of the instrument transformer 9 is adjusted accordingly. Then, at the adjusting position, the mounting plate 12 may be attached to the bottom cover 14 with the bolt 17. As a result, the instrument transformer 9 can be easily attached to a predetermined position in the cylindrical container 1.

Reference numeral 18 is a lid for keeping the hole 16 airtight, and is fixed to the bottom lid 14 with bolts 19. 20 is a moisture adsorbent installed between the bottom lid 14 and the lid 18, 21 is a lead wire derived from the secondary winding of the instrument transformer 9, and 22 is also derived from the tertiary winding. The lead wire 23 is also the ground wire of the primary winding. These are drawn out to the air through the insulating and sealed terminal 24.

[0012]

[Effect of device]

 According to the configuration of the present invention described above, when storing and installing a rectangular resin cast instrument transformer in a cylindrical container with gas insulation, at a predetermined location in the cylindrical container, This has the effect of being able to adjust and install the transformer for the meter at the predetermined location required for external connection.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

2 is a cross-sectional view of FIG.

[Explanation of symbols]

 1 Cylindrical container 4 Conductor 6 Tank 7 Connection conductor 9 Instrument transformer 10 Primary conductor 12 Mounting plate 14 Bottom lid 16 Hole 17 Bolt

Claims (1)

[Scope of utility model registration request] 1. An insulation in which a resin-molded instrument transformer is housed in a cylindrical container together with an insulating gas, and a primary conductor led to the upper part of the instrument transformer is provided on the upper part of the cylindrical container. A gas-insulated transformer device for a transformer, which is connected to a conductor attached to a spacer, and which is connected to a connecting conductor passing through the inside of a tank connected to the upper part of the cylindrical container, wherein A transformer for a gas-insulated instrument, in which a mounting plate is fixed to the bottom cover, a large hole is provided in a bottom cover that closes the bottom of the cylindrical container, and the mounting plate is fixed to the bottom cover by a bolt passing through the hole. apparatus.