Enclosed switchboard

• US 9,705,294 B2
• Filed: 02/16/2016
• Issued: 07/11/2017
• Est. Priority Date: 07/29/2011
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Kubota, Kazuyoshi, Miyanishi, Makoto
• Primary Examiner(s): Pape, Zachary M
• Assistant Examiner(s): JALALI, AMIR A.
• Application Number:
  US15/044,449
• Publication Number:
  US 20160164266A1
• Time in Patent Office: 511 Days
• Field of Search: 361601, 361605, 361611, 361615-616, 361622, 361624, 361626-628, 361631-632, 361634, 361637, 361639, 361641, 361643-644, 361648, 361652, 361647, 361800, 361810, 361816, 361819, 361826, 361828-829, 361832, 361837, 174 681- 682, 174149, 174387, 174390, 340635, 218 44, 218 74- 76, 218152
• CPC Class Codes: H02B 1/06 having associated enclosures, e.g. for preventing access to live parts
• CPC Class Codes: H02B 1/202 Cable lay-outs
• CPC Class Codes: H02B 1/24 Circuit arrangements for boards or switchyards
• CPC Class Codes: H02B 1/26 Casings; Parts thereof or accessories therefor
• CPC Class Codes: H02B 1/301 mainly consisting of a frame onto which plates are mounted
• CPC Class Codes: H02B 1/303 Bases or feet
• CPC Class Codes: H02B 1/46 Boxes; Parts thereof or accessories therefor
• CPC Class Codes: H02B 1/54 Anti-seismic devices or installations
• CPC Class Codes: H02B 1/56 Cooling; Ventilation
• CPC Class Codes: H02B 11/12 with isolation by horizontal withdrawal

Abstract

An enclosed switchboard includes: a device containing board which contains main circuit devices such as circuit breakers; and a cable connection board which is arranged side by side adjacently to the device containing board, and contains cables that input and output electric power to/from the main circuit devices. In the enclosed switchboard, the cable connection board is configured by one housing; and the inside of the housing is divided into two by a partition plate to be comparted to a cable lead-in compartment which contains lead-in side cables and a cable lead-out compartment which contains lead-out side cables.

Claims

1. An enclosed switchboard comprising a housing whose outline is formed in a substantially cuboid shape by combining vertical frames, width directional frames, and depth directional frames,

wherein said housing includes:

a pair of said vertical frames arranged in face-to-face relation on a left side and a right side in a width direction of said housing;

a floor side width directional frame provided so as to connect lower sides of said vertical frames, and including a top surface facing away from a floor plate, at least four side surfaces extending from the top surface, and an opposing bottom surface facing toward the floor plate and contacting the at least four side surfaces; and

a reinforcing member for fixing said housing,

said reinforcing member being arranged on the floor plate of said housing, and including a top wall facing away from the floor plate, at least four side walls extending from the top wall, and an opposing bottom wall facing toward the floor plate and contacting the at least four side walls, and a thickness of the reinforcing member from the bottom wall to the top wall is thicker than a thickness of each of said frames and having a length whose both ends come into contact with the pair of said vertical frames, and said reinforcing member being fixed to the lower sides of the pair of said vertical frames and to at least one of the at least four side surfaces said floor side width directional frame by welding.

2. The enclosed switchboard according to claim 1,

wherein said reinforcing member is provided on a front side, a back side, and an intermediate portion in a depth direction of said housing.

3. The enclosed switchboard according to claim 1,

wherein a hole for foundation, which is for fixing said reinforcing member to a foundation surface, is provided near length directional end portions of said reinforcing member.

4. The enclosed switchboard according to claim 3,

wherein a size of the hole for foundation is that of a bolt hole of standards corresponding to a foundation bolt to be used.

5. The enclosed switchboard according to claim 2,

wherein a hole for foundation, which is for fixing said reinforcing member to a foundation surface, is provided near length directional end portions of said reinforcing member.

6. The enclosed switchboard according to claim 1, wherein the reinforcing member has a substantially rectangular shape in plan view, first and second corners of the reinforcing member have cut-out portions, and third and fourth corners of the reinforcing member are provided without a cut-out portion.

7. The enclosed switchboard according to claim 1, wherein the reinforcing member has a substantially cuboid shape, and a volume of the substantially cuboid shape is filled with material.

8. The enclosed switchboard according to claim 1, wherein the reinforcing member is rectangular in cross-section as viewed from the ends of the reinforcing member that come into contact with the pair of said vertical frames.