JP2011229198A - High-voltage power receiving facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-voltage power receiving facility capable of performing a switching operation of a high voltage switchgear without requiring work such as detaching or winding up a protecting cover provided for the high-voltage switchgear and further while maintaining a fixed safety distance from the high-voltage switchgear, for the high-voltage power receiving facility including the high-voltage switchgear inside a distribution board.SOLUTION: In a high-voltage power receiving facility mounting at least a high-voltage switchgear (2) inside a distribution board (1), the high-voltage switchgear (2) is an outdoor high-voltage switchgear for performing a switching operation of an operating handle (2b) using a pull-string (2c), the high-pressure switchgear (2) is mounted in an upper part inside the distribution board (1) while turning the operating handle (2b) toward the side of a front door (1a) of the distribution board (1). Inside the distribution board (1), a protecting plate (3) is provided between a high-voltage switchgear body (2a) and the operating handle (2b), and the pull-string (2c) is suspended at the front side of the protecting plate (3).

Description

  The present invention relates to a high-voltage power receiving facility, and more particularly to a high-voltage power receiving facility in which a protective plate is installed on a high-voltage switch built in a switchboard to ensure the safety of an operator when the power receiving facility is maintained and inspected.

  Conventionally, high-voltage power receiving equipment has various devices such as a high-voltage switch and a control device built in a switchboard. The high-voltage power receiving equipment is required to be regularly inspected and inspected, and along with this, the worker performs a periodic inspection and inspection of the high-voltage power receiving equipment. At this time, since the operator opens the switchboard door and operates the internal high-voltage equipment, particularly the high-voltage switch, there is a danger to the operator. In order to prevent the danger, various preventive means have been conventionally proposed.

  For example, in Japanese Patent Application Laid-Open No. 7-240133, a safety cover is attached to a high-voltage switch to ensure safety during maintenance and inspection of the entire high-voltage power receiving facility, protect precious lives, and short-circuit accidents caused by invasion of small animals, etc. It is disclosed to prevent wide-area power outage accidents.

  In JP-A-7-143621, a flexible insulating thin plate member is attached on the front side of a device built in the switchboard, fixed at the upper end to the switchboard, and detachably locked at the lower end. A protective cover for a switchboard built-in appliance is disclosed.

  Furthermore, in Japanese Patent Laid-Open No. 9-172706, an insulating sheet having flexibility and molded and cut so as to cover a terminal portion of a device attached to a door, and an upper and lower end surface portion of the sheet are provided. Attaching the hook-and-loop fastener to the position on the inner surface side of the door corresponding to this hook-and-loop fastener, and joining the sheet with these fasteners, covers the terminal part of the instrument with the sheet and prevents electric shock Is disclosed.

Japanese Patent Laid-Open No. 7-240133 JP-A-7-143621 JP-A-9-172706

  All of the above-mentioned conventional patent documents 1 to 3 are covered with an insulating cover or sheet on the front side of the electrical control device or switchgear device in the switchboard, and serve to prevent electric shock during maintenance inspection. However, when opening and closing the appliances in the switchboard, it is necessary to remove those covers or sheets or to lift the front cover. Therefore, in these operations, especially in the case of a high-voltage switch, the distance from the high-voltage switch is very close and extremely dangerous, sometimes causing an electric shock, and is a cover that is not suitable for high-voltage equipment. .

  The present invention does not require a work such as removing or lifting the protective cover provided on the high-voltage switch for the high-voltage power receiving equipment provided with the high-voltage switch in the switchboard, and is a certain safety distance from the high-voltage switch. An object of the present invention is to provide a high-voltage power receiving facility capable of opening and closing a high-voltage switch while maintaining the above.

  The present invention is for a high-voltage power receiving facility in which at least a high-voltage switch (2) is mounted in a switchboard (1), and the high-voltage switch (2) opens and closes an operation handle (2b) with a string (2c). A high-voltage switch, the high-voltage switch (2) is mounted on the upper part of the switchboard (1) with the operation handle (2b) facing the front door (1a) of the switchboard (1), and In the switchboard (1), a protective plate (3) is provided between the main body of the high voltage switch (2a) and the operation handle (2b), and the string (2c) is provided on the front side of the protective plate (3). ) Is suspended.

  Further, it is preferable that the protective plate (3) is a transparent plastic plate and a notch relief hole (3a) is formed in the upper portion.

  The high-voltage switch (2) of the present invention is an outdoor high-voltage switch (high-pressure switch for poles), which is opened and closed by pulling two pull strings tied to both ends of the handle. The Further, this high-voltage switch (2) is particularly preferable if it uses a high-pressure AC air load switch with an overcurrent lock type function because maintenance and inspection are easy and it is inexpensive.

  The protective plate (3) of the present invention is a transparent plastic plate, and a notch relief hole (3a) is formed in the upper portion thereof. Thus, when the protective plate (3) is provided between the high-voltage switch body (2a) and the operation handle (2b), a notch clearance hole is formed between the connected high-voltage switch body (2a) and the operation handle (2b). (3a) is located, the protection plate (3) can be easily attached, and the front side of the high-voltage switch body (2a) can be partitioned by the protection plate (3).

  The width of the protective plate (3) of the present invention is substantially the same as the width in the switchboard (1), and the vertical width is about two thirds from the ceiling with respect to the height in the switchboard (1). Is preferred.

  The present invention uses an outdoor high-voltage switch (2) that opens and closes an operation handle (2b) with a string (2c) in the switchboard (1), and the high-voltage switch body (2a) and the operation handle ( Since the protective plate (3) is provided between 2b), the high-voltage switch body (2a) is covered with the protective plate (3). As a result, there is a danger that a person directly touches the high-voltage switch body (2a) during inspection, and a danger to the human body from scattering of parts and debris when the high-voltage switch body (2a) is destroyed due to a short circuit accident. Can be prevented.

  Moreover, there has never been an outdoor high-voltage switch in the switchboard (1) itself, and by using this outdoor high-voltage switch, the string (2c) is on the front side of the protective plate (3). Because of the suspension, the opening and closing operation of the high-voltage switch (2) is coupled with the protection of the protective plate (3), and can be opened and closed at a position away from the high-voltage switch (2) by the string (2c). Extremely safe.

It is a front view in the switchboard which shows the Example of this invention. It is a side view in the switchboard which shows the Example of this invention. It is a perspective view of the protection board of this invention. It is explanatory drawing which shows another form with the protection board of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, (1) is a box-shaped switchboard having a front door (1a) on the front side. (2) is a high-voltage switch, and the high-voltage switch (2) is for outdoor use, and is a type in which an operation handle (2b) is operated with a string (2c) for opening and closing operations. In addition, the high-voltage switch (2) has hook bolts with the operation handle (2b) facing the front door (1a) side of the switchboard (1) on the arm (4) provided in the upper part of the switchboard (1). It is attached with (5) and nut (6).

  (3) is a protective plate made of plastic as shown in FIG. 3, and a notch relief hole (3a) is formed at the upper center of the protective plate (3). The protective plate (3) is provided between the high-voltage switch body (2a) and the operation handle (2b). Even if the protective plate (3) is inserted between the high-voltage switch body (2a) and the operation handle (2b) from the lower side at that time, it is easy to hit the high-voltage switch (2) by the notch relief hole (3a). And can be installed in place.

  Further, the protective plate (3) is preferably set to have a width approximately equal to or slightly shorter than the horizontal width in the switchboard (1), and the vertical width is preferably approximately two-thirds of the vertical width in the switchboard (1). This vertical width covers the upper part of the vertical width in the switchboard (1) with a width of two thirds from the ceiling, and the lower third in the switchboard (1) is open. It has become. This lower part is opened because the control panel (8) is provided below the switchboard (1), so that the protective plate (3) can be inspected without being obstructed during the inspection.

  Although the protective plate (3) is made of plastic, naturally, insulation and strength are required, and a transparent one is preferable, and a transparent acrylic plate is particularly preferable. It is sufficient if it can cope with a breakage accident of the switch (2), and a transparent one is preferable because the inside of the high-voltage switch body (2a) can be visually inspected from the outside.

  The protective plate (3) is attached to the switchboard (1) with screws (7) using the mounting holes (3b) drilled in at least four corners of the protective plate (3), as shown in FIG. As shown in the figure, the hooks (3c) are formed by cutting off both ends of the lower part of the protective plate (3) at right angles, and the hooks (3c) project horizontally on both sides of the switchboard (1). It may be attached to 9). In this case, it is very easy to remove the protective plate (3) compared to the screw (7). When checking the high-voltage switch body (2a) and cleaning it, It is easy to work without removing the protective plate (3).

  In the protective plate (3) provided between the high-voltage switch body (2a) and the operating handle (2b), the operating handle (2b) part projects to the front of the protective plate (3), and the high-voltage switch body (2a) It is covered with a protective plate (3). Therefore, the two pull cords (2c) tied to both ends of the operating handle (2b) protruding from the protective plate (3) are suspended from the front side of the protective plate (3), The string (2c) can be easily operated. That is, the pull cord (2c) is isolated from the high-voltage switch body (2a) by the protective plate (3) and can be operated away from the operation handle (2b), so that the opening / closing operation of the high-voltage switch (2) is extremely safe. It becomes.

  In short, the present invention uses an outdoor high-voltage switch (2) that is opened and closed with a drawstring (2c) in the switchboard (1), and the high-voltage switch body (2a) and the operation handle (2b) A protective plate (3) is provided in between, and the pull string (2c) is positioned in front of the protective plate (3), which makes it very safe to open and close the high-voltage switch (2) during inspection. Have.

1 Switchboard
1a Front door 2 High pressure switch
2a High pressure switch body
2b Operation handle
2c Drawstring 3 Guard plate
3a Notch clearance hole

Claims (2)

  In high-voltage power receiving equipment with at least a high-voltage switch (2) installed in the switchboard (1), the high-voltage switch (2) is an outdoor high-voltage switch that opens and closes the operation handle (2b) with a string (2c). The high-voltage switch (2) is mounted on the upper part of the switchboard (1) with the operation handle (2b) facing the front door (1a) of the switchboard (1), and the switchboard ( In 1), a protective plate (3) is provided between the high-voltage switch body (2a) and the operation handle (2b), and the pull cord (2c) is suspended from the front side of the protective plate (3). High-voltage power receiving equipment characterized by that. The high-voltage power receiving equipment according to claim 1, wherein the protective plate (3) is a transparent plastic plate, and a notch relief hole (3a) is formed in the upper portion thereof.