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A power line current interrupter having vacuum switch chamber

A technology of current breaking and power lines, applied in the direction of high-voltage air circuit breakers, circuits, electric switches, etc., can solve the problems that cannot be considered in use, toxicity and corrosion of decomposition products, bulky angles of materials and dimensions, etc.

Active Publication Date: 2010-06-09
AREVA T&D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even so, the use of this gas is limited because it has the disadvantage that its decomposition products are toxic and corrosive, and it contributes to the greenhouse effect
Therefore, there is a need for the use of vacuum switch boxes, which are also used in some circuit breakers. The switch contacts are an internal component of these switch boxes. Vacuum switch boxes are most effective at extinguishing arc currents; however, in the absence of In the case of a further improvement, the use of vacuum switchgears in today's circuit breakers cannot be considered for cost reasons, since the vacuum switchgears used in these circuit breakers are too bulky from a material and size point of view and have to be used to Materials and dimensions to meet different electrical and dielectric requirements, such as being able to withstand lightning strikes

Method used

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  • A power line current interrupter having vacuum switch chamber
  • A power line current interrupter having vacuum switch chamber
  • A power line current interrupter having vacuum switch chamber

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Embodiment Construction

[0012] Instructions begin with drawings that explain how the circuit breaker works. figure 1 A line 1 is shown as the main transmission line, on which is located a disconnector 2 adapted to be closed or opened by rotation about a pivot 3 . The device also comprises a parallel branch 4 consisting of a stationary part 5 and a movable part 7 in which a vacuum switch box 6 is connected. The stationary part 5 comprises a first end 8 of the branch 4, which is connected to the power line 1; the movable part 7 comprises a second end 9 of the branch 4 (opposite the first end 8), when the second end 9 is at figure 1 In the position shown, the second terminal 9 is close to the power line 1 and the disconnector 2, but separated from them. The stationary part 5 and the movable part 7 are electrically connected to each other and hinged together at a junction 10 . The vacuum switch box 6 comprises a pair of switching contacts 12 and 13, wherein the first contact 12 is carried by a stationa...

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Abstract

This interrupter device includes a parallel branch (4) in which a vacuum switch chamber is connected for breaking current. The branch is inactive in normal operation, with current flowing in it only when the disconnector (2) has started its opening movement, by progressive transfer of the current from the main power line (1) to the branch (4). Since the vacuum switch (6) is generally at rest, it no longer needs to be dimensioned to satisfy stringent electrical and dielectric requirements for normal operation.

Description

technical field [0001] The invention relates to a power line (or power cable) current circuit breaker with a vacuum switch box. Background technique [0002] Circuit breakers and circuit breakers in medium or high voltage power lines or power cables usually comprise a box in which switching contacts are arranged so as to move between a mutual contact position corresponding to power line closing and a mutual position apart corresponding to power line opening to move between. These tanks are filled with a dielectric fluid in which the switch contacts are soaked and which assists in breaking current by extinguishing arcs that may remain after the switch contacts are separated from each other. Many different fluids (such as air, oil, nitrogen, etc.) have been proposed in the past, but sulfur hexafluoride (SF 6 ), sulfur hexafluoride has good dielectric properties and is therefore very suitable for this purpose. Even so, the use of this gas is limited because it has the disadv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66
CPCH01H33/126H01H33/6661H01H31/003
Inventor 丹尼尔·皮克科兹弗洛里安·德克帕特里斯·格罗让
Owner AREVA T&D