Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
  • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
  • H01H33/66—Vacuum switches
  • H01H33/666—Operating arrangements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
  • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
  • H01H33/66—Vacuum switches
  • H01H33/666—Operating arrangements
  • H01H2033/6667—Details concerning lever type driving rod arrangements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
  • H01H33/02—Details
  • H01H33/022—Details particular to three-phase circuit breakers

Definitions

• the invention relates to a drive for circuit breakers of a circuit breaker system, in particular an air-insulated medium-voltage switchgear assembly, with vacuum circuit breakers arranged in a disconnection insert, the vacuum circuit breakers being integrated in a pole module which can be moved by a disconnector drive to implement the disconnection function.
• the switch drive is equipped with a controllable drive shaft, the rotary deflection of which is transmitted via driver levers m the two end positions of the isolator to a radially deflectable control shaft which is connected to a number of horizontally deflectable push rods m corresponding to the number of phases to be switched, each push rod using An articulated lever mounted at a fixed pivot point vertically deflects the movable contact part of the vacuum circuit-breaker.
• a drive for circuit breakers of the type defined at the outset is known from DE 197 53 177.
• the push rods of the circuit-breaker pole module for driving the movable contact parts are therefore controlled by the jointly assigned drive shaft, which in turn is connected to two driving levers in a force-locking manner.
• the driver levers In the area opposite the drive shaft, the driver levers have a selector shaft which is also non-positively connected to the driver levers and with which the rotary deflection of the drive shaft is converted into a horizontal deflection of the selector shaft.
• the push rods are deflected accordingly and, in connection with the pivoted articulated lever, the movable contact parts vertically deflected.
• the force redirections required for switching the vacuum circuit-breaker must be transferred simultaneously and precisely to the moving contact parts.
• the switching sequences must be reproducible in many cases in accordance with the requirements for reliability and service life without changes in the chronological sequence with defined contact forces.
• the object on which the invention is based is to provide a concept for the structural design of the circuit breaker pole modules with which these requirements - reliable switching with a long service life - can be achieved. According to the invention, this is due to the features
• the vacuum circuit breakers can be controlled in a common pipe level
• the pole module can be controlled on a common pole module level
• the Rohrantantnebsebene is offset from the Polmodulantnebsebene by a right angle (90 degrees)
• the push rods are arranged between the drive levers of the control shaft in such a way that when switching the movable contact parts of the vacuum circuit breaker alternately a tensile and a compressive load or conversely acts on the control shaft.
• the load on the push rod is optimally evened out with the planes of the tubular ren and the pole module drive arranged at right angles to one another and the push rods arranged in such a way between the driving levers.
• This has a positive effect both on the requirement for the simultaneous switching of the moving contact parts and on the increase in the service life of the vacuum circuit breakers.
• compact design for the circuit-breaker pole modules achieved, in which the movability of the vacuum circuit-breaker for the isolating function is also realized with simple constructional means.
• An advantageous embodiment of the invention features 2.1.
• the articulated levers are under the control of their own contact pressure spring in such a way that when the movable contact parts of the vacuum circuit breaker are switched, the tensile force of the contact pressure spring is effective as the contact pressure force.
• the movable contact parts of the vacuum circuit-breakers are extended by a tube coupling rod, the free end of which is connected in a straight line to the respective connecting rod via the corresponding articulated lever. Thanks to the variably extendable coupling rod, the contact stroke of the vacuum circuit breakers can be easily adapted to the required conditions.
• the invention is illustrated by three figures
• FIG. 1 showing a perspective view of the circuit breaker pole module with the drive parts essential for the invention
• FIG. 2 shows a plan view of the pipe plane and the FIG. 3 shows a plan view of the pole module plane, to which the pipe plane is at the right angle.
• FIG. 1 shows the circuit-breaker pole module with the three vacuum circuit-breakers (VS1, 2, 3) and their common switch drive (SA), whereby the right-angled assignment of the pole module secondary plane (PE) to the pipe branch plane (RE) is particularly evident.
• SA common switch drive
• the vacuum circuit-breakers (VS1, 2, 3) are actuated via several levers and shafts (not shown) via the rotary movement of the drive shaft (AW), whose radial deflection is transmitted to the actual selector shaft (SW) via the two drive levers (MH1, 2).
• the selector shaft (SW) moves the push rods (SSI, 2, 3) accordingly horizontally.
• the articulated lever (GH1, 2, 3) the horizontal movement of the push rods (SSI, 2, 3) is converted back into a vertical deflection and the moving contact parts of the vacuum circuit breakers (VS1, 2 , 3) opened and closed accordingly.
• Each coupling rod (RKl, 2, 3) is connected to the associated contact pressure spring (KFl, 2, 3) in such a way that the corresponding tensile force (ZK ..., Fig. 2) directly as the corresponding contact pressure force (KK ..., Fig. 2) can act.
• FIG. 3 shows the immediate top view of the pole module plane (PE), to which the pipe plane (RE) runs at a right angle of 90 degrees.
• PE pole module plane
• RE pipe plane
• FIG. 3 shows the immediate top view of the pole module plane (PE), to which the pipe plane (RE) runs at a right angle of 90 degrees.
• this illustration also shows the force-action curves for the radial deflection of the drive shaft (AW), which the selector shaft (SW) via the drive lever (MH1, 2) and thus also the push rods not shown in this view - as already mentioned described - deflect horizontally.

Priority Applications (2)

Applications Claiming Priority (2)

Publications (2)

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ID=8080094

Family Applications (1)

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Cited By (1)

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Family Cites Families (2)

• 1999
  • 1999-09-30 DE DE29917860U patent/DE29917860U1/de not_active Expired - Lifetime
• 2000
  • 2000-09-27 WO PCT/DE2000/003432 patent/WO2001024210A2/de active IP Right Grant
  • 2000-09-27 ES ES00982937T patent/ES2207563T3/es not_active Expired - Lifetime
  • 2000-09-27 DE DE50003669T patent/DE50003669D1/de not_active Expired - Fee Related
  • 2000-09-27 EP EP00982937A patent/EP1218904B1/de not_active Expired - Lifetime
  • 2000-09-27 CN CNB008136505A patent/CN1197107C/zh not_active Expired - Fee Related

Non-Patent Citations (2)

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