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EP0092774A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Switch board

Assignee: Hitachi Ltd
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Filing: 1983-04-19
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Granted: —
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Expires: 2003-04-19
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Abstract

Abstract A switch board (2) with a casing (5) thereof supported on right and left vertical supports (3, 4) includes a conduction chamber (6) and an upper and lower electricity chambers (7A, 7B) with a partition wall (8) therebetween. A drawer-type electric device (21) is adapted to operate into and out of the electricity chambers, so that a secondary movable plug (23) of the drawer-type electric device is connected and disconnected to a secondary control stationary plug (24) in each of the electricity chambers. Control lines (46, 47) are connected between the secondary control stationary plug and the control terminal in the upper electricity chamber. Wiring ducts for containing the control lines include control ducts (29) arranged along the ceiling of the casing from the control terminal, vertical ducts (38, 39) communicating with the right and left sides of the control duct, and horizontal ducts (43,44) for connecting the end of the vertical ducts to the secondary control stationary plug of the upper electricity chamber and the other end thereof to the secondary control stationary plug of the lower electricity chamber.

Inventors

  • 👤 Isao Yoshikawa
  • 👤 Tooru Tanimizu
  • 👤 Sinzi Sugitani

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 05:37
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/12; H02B11/167

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 217 words
A switch board comprising a switch box (2) with a casing (5) thereof mounted on vertical supports (3, 4) erected on right and left sides, a conduction chamber (6) and at least a pair of electricity chambers (7A, 7B) with a partition wall (8) having primary circuit breaker sections (9, 10) therebetween in said switch box, a drawer-type electric device (21) clicked into and out of said electricity chambers, a secondary control stationary plug (24) adapted to connected and disconnect with a secondary movable plug (23) of said drawer-type electric device, control lines (46, 47) for connecting said secondary control stationary plug and control terminals (32, 33) mounted on said switch box, and wiring ducts (29, 38, 39, 43, 44) for containing said control lines; wherein said wiring ducts include control ducts (29) having a control terminal arranged in the upper electricity chamber, an opening (42) communicating with said vertical supports at the right and left sides of said control duct, vertical ducts (38, 39) communicating with said opening and located in said vertical supports, horizontal ducts (43, 44) for connecting an end of said vertical ducts to said secondary control stationary plug of said lower electricity chamber and the other end of said vertical ducts to the secondary control stationary plug of said lower electricity chamber.
Claim 2
Dependent Claim 217 words
A switch board comprising a switch box (2) with a casing (5) thereof mounted on vertical supports (3, 4) erected on right and left sides, a conduction chamber (6) and at least a pair of electricity chambers (7A, 7B) with a partition wall (8) having primary circuit breaker sections (9, 10) therebetween in said switch box, a drawer-type electric device (21) clicked into and out of said electricity chambers, a secondary control stationary plug (24) adapted to connected and disconnect with a secondary movable plug (23) of said drawer-type electric device, control lines (46, 47) for connecting said secondary control stationary plug and control terminals (32, 33) mounted on said switch box, and wiring ducts (29, 38, 39, 43, 44) for containing said control lines; wherein said wiring ducts include control ducts (29) having a control terminal arranged in the upper electricity chamber, an opening (42) communicating with said vertical supports at the right and left sides of said control duct, vertical ducts (38, 39) communicating with said opening and located in said vertical supports, horizontal ducts (43, 44) for connecting an end of said vertical ducts to said secondary control stationary plug of said lower electricity chamber and the other end of said vertical ducts to the secondary control stationary plug of said lower electricity chamber.
Claim 3
Dependent Claim 24 words
A switch board according to Claim 1, wherein said control ducts are mounted on the ceiling of said casing making up said switch box.
Claim 4
Dependent Claim 53 words
A switch board according to Claim 1 or 2, wherein the control lines for the upper electricity chamber are arranged on one side of the control duct divided by a dash board (14, 31) while the control lines for the lower electricity chamber are located on the other side of the control duct.
Claim 5
Dependent Claim 24 words
A switch board according to Claim 1 or 2, wherein said control duct and said vertical ducts are provided with detachable covers (30, 40).
Claim 6
Dependent Claim 30 words
A switch board according to Claim 1, 2, 3 or 4, wherein a baffle board (45) is provided for forming a detour of said control lines in said horizontal ducts.
Claim 7
Dependent Claim 36 words
A switch board according to Claim 1, 2, 3, 4 or 5, wherein a baffle board (45) is provided for deteriorating the air flow in the opening of said control duct communicating with said vertical ducts.
Claim 8
Dependent Claim 29 words
A switch board according to Claim 1, 2, 3, 4, 5 or 6, wherein a baffle board (45) is provided for deteriorating the air flow in said vertical ducts.

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