Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/20—Interlocking, locking, or latching mechanisms
  • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
  • H01H3/227—Interlocked hand- and power-operating mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/20—Interlocking, locking, or latching mechanisms
  • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
  • H01H9/226—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts the casing containing electrical equipment other than and operated by the switch

Definitions

• the invention relates to a power disconnecting device comprising a switch which can be actuated by means of at least one auxiliary drive and has switch contacts.
• Such power disconnecting devices are usually used to separate consumers for maintenance of a power system.
• passenger cars have a power disconnecting and earthing device for disconnecting and grounding a single passenger coach from an upgraded train set consisting of multiple passenger carriages for maintenance purposes from the train manifold. The maintenance work can then be carried out safely on this passenger car, which is separate from the power supply system and grounded.
• a switch or contactor which switches on or off the power supply systems of the passenger coach.
• a separate disconnecting and earthing device is provided in the passenger car, which comprises a mechanically actuated switch with separate switching contacts, which effects an additional separation of the power supply systems from the Switzerlandsammeischiene. This creates a visible separation point.
• the mechanically actuated switch is equipped with a mechanical positive separation, which leads to a violent separation of the switching contacts, if they are welded together, for example. Upon actuation of this mechanical switch grounding of the consumer or the car system, for example, by lowering a grounding blade, brought about and released the car for maintenance.
• a switching device for switching on and off the electrical loads and a separate separation and grounding device for generating a maintenance position are required.
• the use of two separate devices leads to increased space requirements.
• the invention provides that the power disconnecting device has an additional manually operated acting on the switch contacts of the switch positive opening device.
• the manually operated forced opening device is integrated in the power disconnecting device, only one device is required. Thus, a more compact construction and a weight reduction of the power disconnecting device are possible.
• the forced opening device is connected to a housing of the power disconnecting device such that an opening of the housing of the power disconnecting device actuates the forced opening device.
• a positive opening of the switch contacts of the switch is thus automatically effected.
• the power disconnecting device has a grounding device connected to the positive opening device. Upon actuation of the positive opening device, a grounding of the consumer is thus brought about and a safe switching state for maintenance is established.
• the grounding device is arranged visible in the power disconnecting device. It is thus also possible to check whether the consumers are actually grounded without opening the housing of the power disconnecting device.
• the power disconnecting device has a visible disconnection point connected to the positive opening device. It can therefore be easily checked whether the operation of the positive opening device has actually led to a separation of the switching contacts.
• the power disconnecting device comprises a blocking mechanism which permits opening of the housing of the Power disconnect device blocked if forced opening of the switch contacts is not possible. If the contacts are welded together so that a forced opening is not possible, it is therefore not possible to open the housing of the power disconnecting device. In this way, a threat to the operator is avoided.
• the current-separating device can be closed in the switch state with opened switch contacts, opened disconnection point and activated earthing device.
• This switching position is the maintenance position of the power disconnecting device.
• Fig. 4 is a schematic representation of another embodiment of the power disconnecting device.
• Fig. 1 is a circuit diagram of the power disconnecting device 1 is shown in normal operation. Both the switch 2 and the grounding device 3 are closed and the consumers are thus connected to the power supply.
• the switch 2 comprises two switching contacts 4, 5.
• the switching contacts 4, 5 are opened and closed by means of an auxiliary drive 6.
• the manually operable positive opening device 7 also acts on the switching contacts 4, 5 a.
• the forced opening device 7 is furthermore connected to the grounding device 3.
• Fig. 2 is a circuit diagram of the power disconnecting device 1 is shown with open switch 2. The consumers are thus disconnected from the power supply. If maintenance work is to be carried out, then only the switch 2 via the auxiliary drive. 6 open. Subsequently, the forced opening device 7 is actuated. The forced opening device 7 is connected to the housing, preferably to the housing cover, of the power disconnecting device 1. If the housing, or the housing cover, the power disconnecting device 1 is opened to perform maintenance, the positive opening device 7 is automatically actuated. The positive opening device 7 acts on the switching contacts 4, 5 a. If the switching contacts 4, 5 can not be opened by the auxiliary drive 6, for example because they are welded together, the forced opening device 7 causes a violent separation of the switching contacts 4, 5.
• the positive opening device protrudes after its operation in the switching contact point. This is intended to ensure positive opening of the switching contacts.
• the forced opening device 7 blocks and prevents further opening of the housing of the current-separating device 1.
• grounding blade 8 moves a grounding blade 8 and grounds the consumers.
• a visible separation point 9 is further generated in the power disconnecting device 1.
• grounding point 10 is visible. It can thus be easily recognized that the consumers were disconnected from the power supply and grounded and a safe maintenance condition was established.
• This maintenance condition is shown in FIG.
• the maintenance condition with open switch contacts 4, 5, open disconnection point 9 and closed grounding point 10 can be closed.
• the positive opening device 7 is connected to the housing of the power disconnecting device 1, that the housing of the power disconnecting device 1 can only be closed again when the grounding of the consumer has been lifted.
• a threat to the operator can be excluded. 4
• a further embodiment of the invention is shown.
• the same components as in Figures 1 to 3 are designated in Fig. 4 by the same reference numerals. For the function of these components, reference is made to the preceding description.
• the movable contact of the switching contacts on a movable carriage 11 or a similar component is arranged, which consists of the housing
• the switch 2 may be, for example, a contactor.
• the auxiliary drive 6 then acts on this carriage 11, moves the carriage 11 and thus also the movable switching contact. As a result, opening or closing of the switching contacts is effected.
• the positive opening device 7 acts on the carriage 11, on which the movable switching contact is arranged. As can be seen from Fig. 4, both the positive opening means 7 and the grounding blade 8 with the housing cover
• connection of the grounding blade 8 with the housing cover 13 can for example be realized so that the grounding blade 8 is arranged on a guide 14 which is connected via a driver 15 with the housing cover 13. If the housing cover 13 is opened, the grounding blade 8 is moved over the driver 15 on the guide 14 and transferred to the grounding position.
• the grounded state of the power disconnecting device 1 with operated forced opening device 7 is shown in dashed lines in Fig. 4.
• the connection of the housing cover 13 is realized with the positive opening device 7 and the grounding blade 8 via a component. This component is preferably designed so that when opening the housing cover 13, first the positive opening device 7 is actuated before the grounding blade 8 is transferred to the grounding position.
• the same safety measures apply as described for Figs. 1 to 3.
• the forced opening device 7 blocks and prevents further opening of the housing cover 13 when the switching contacts can not be separated.
• the power separation device 1 described can be used, for example, in high-voltage systems of passenger carriages. But it is also the use in multiple units, U- and trams possible.

Landscapes

• Keying Circuit Devices (AREA)
• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
• Power Sources (AREA)
• Heat-Pump Type And Storage Water Heaters (AREA)
• Control Of Electrical Variables (AREA)
• Superconductors And Manufacturing Methods Therefor (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Surgical Instruments (AREA)
• Push-Button Switches (AREA)
• Steering Control In Accordance With Driving Conditions (AREA)
• Train Traffic Observation, Control, And Security (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38016739

Family Applications (1)

Country Status (8)

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Citations (2)

Family Cites Families (6)

• 2006
  • 2006-03-16 DE DE102006012231A patent/DE102006012231A1/de not_active Withdrawn
• 2007
  • 2007-02-22 AT AT07711631T patent/ATE465503T1/de active
  • 2007-02-22 CN CN2007800067758A patent/CN101443867B/zh not_active Expired - Fee Related
  • 2007-02-22 WO PCT/EP2007/001547 patent/WO2007104411A1/de active Application Filing
  • 2007-02-22 JP JP2008558666A patent/JP4853743B2/ja not_active Expired - Fee Related
  • 2007-02-22 DE DE502007003511T patent/DE502007003511D1/de active Active
  • 2007-02-22 ES ES07711631T patent/ES2342216T3/es active Active
  • 2007-02-22 EP EP07711631A patent/EP1994538B1/de not_active Not-in-force
• 2009
  • 2009-02-18 HK HK09101560.9A patent/HK1121580A1/xx not_active IP Right Cessation

Patent Citations (2)

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