EP3540752B1 - Nh-sicherungs-lasttrennschalter - Google Patents

Nh-sicherungs-lasttrennschalter Download PDF

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Publication number
EP3540752B1
EP3540752B1 EP18162088.1A EP18162088A EP3540752B1 EP 3540752 B1 EP3540752 B1 EP 3540752B1 EP 18162088 A EP18162088 A EP 18162088A EP 3540752 B1 EP3540752 B1 EP 3540752B1
Authority
EP
European Patent Office
Prior art keywords
fuse
housing
circuit breaker
fuses
fuse circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18162088.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3540752A1 (de
Inventor
Philipp Steinberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Woehner GmbH and Co KG Elektrotechnische Systeme
Original Assignee
Woehner GmbH and Co KG Elektrotechnische Systeme
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Woehner GmbH and Co KG Elektrotechnische Systeme filed Critical Woehner GmbH and Co KG Elektrotechnische Systeme
Priority to EP18162088.1A priority Critical patent/EP3540752B1/de
Priority to PL18162088.1T priority patent/PL3540752T3/pl
Priority to ES18162088T priority patent/ES2923297T3/es
Priority to CN201910198934.3A priority patent/CN110277289B/zh
Publication of EP3540752A1 publication Critical patent/EP3540752A1/de
Application granted granted Critical
Publication of EP3540752B1 publication Critical patent/EP3540752B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/47—Means for cooling
    • 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
    • H01H9/52—Cooling of switch parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H2085/0555—Input terminal connected to a plurality of output terminals, e.g. multielectrode

Definitions

  • the invention relates to an NH fuse load-break switch for NH fuses with a high power density.
  • Load-break switches are used to disconnect a load or consumer or device from a current or voltage distribution system.
  • a power distribution system can include one or more power supply rails, in particular power busbars.
  • the consumers or loads are connected to the power distribution system via the load-break switch.
  • the load-break switch can contain usable fuses, in particular NH fuses. To disconnect the current phases from the loads or consumers, a user or an operator can manually actuate an actuating handle in order to open switch contacts within the load-break switch.
  • EP 2913835 A1 discloses a fuse load-break switch for low-voltage, high-performance fuses, with a fuse contact pair for receiving within a housing of the fuse load-break switch for each current phase to be separated a fuse is provided, with heat loss generated by the fuses being dissipated in at least one heat dissipation channel provided laterally on the housing of the fuse switch disconnector.
  • DE 9310753 U1 discloses a three-pole fuse element, completely encapsulated by a housing, for direct attachment to busbar systems, with a resilient latching lever for positively locking the fuse element to one of the busbars, with all terminals of the outgoing lines being at the same height in the area of the lower end face of the housing and that both in the area of the upper housing front side and in the lower housing front side several ventilation slots are arranged.
  • the invention therefore creates an NH fuse switch disconnector with the features of patent claim 1.
  • the NH fuse switch disconnector according to the invention offers the advantage that the volume of the housing of the NH fuse switch disconnector can be reduced and accordingly the space or installation space occupied by the NH fuse switch disconnector is reduced.
  • the NH fuse switch disconnector when the NH fuse switch disconnector is installed in a switch cabinet, for example, the NH fuse switch disconnector takes up relatively little space, so that more space is available for other devices in the switch cabinet.
  • the NH fuses can be switched simultaneously by means of a manually operable control unit attached to the housing.
  • the manually operable control unit is designed to be tool-safe in connection with the housing.
  • the housing comprises a contact carrier and a lower part.
  • the manually operable control unit is connected to a switching mechanism for the NH fuses.
  • the switching mechanism has a parallel pull-out for the NH fuses.
  • the switching mechanism has a pivoting pull-out for the NH fuses.
  • the housing of the NH fuse-switch disconnector has on its rear mounting locking elements for mounting the NH fuse-switch disconnector on horizontally arranged current-carrying rails and contact elements for making electrical contact with the current-carrying rails.
  • an associated NH fuse is provided in the housing of the NH fuse load-break switch for each current phase transported via an associated busbar.
  • the housing of the NH fuse switch disconnector has at one end for each current phase has a clamping device for connecting lines.
  • the third NH fuse located in the housing of the NH fuse switch-disconnector is in relation to the two NH fuses arranged next to one another below in the housing of the NH fuse switch-disconnector offset to the rear of the housing, with waste heat generated by the two adjacent NH fuses (NH1, NH2) also being able to be dissipated at the front of the housing by convection without the waste heat affecting the third NH fuse (NH3 ) warms up.
  • the housing of the LV HRC fuse switch disconnector has feed slots for supplying a cooling medium on a lower face of the housing and on an upper face and on a when the NH fuse switch disconnector is in the installed state Dissipation slots located on the longitudinal sides of the housing for dissipating the waste heat generated by the NH fuses.
  • the operating unit of the NH fuse switch disconnector is provided with an actuating handle which has two guide brackets which are connected to the switching mechanism of the NH fuse switch disconnector.
  • a fuse cover is provided on a front side or front side of the housing of the NH fuse switch disconnector, which covers the NH fuses.
  • the fuse cover has viewing windows on the front side of the housing.
  • the fuse cover of the NH fuse switch disconnector can be locked both when the NH fuse switch disconnector is switched on and when the NH fuse switch disconnector is switched off.
  • the housing of the NH fuse switch disconnector has a contact carrier which contains a thermally conductive plastic.
  • the NH fuse switch-disconnector or load-break switch 1 is intended for several NH fuses.
  • the load-break switch 1 has a housing 2.
  • the housing 2 is preferably formed in two parts and comprises a lower part 2A and a contact carrier 2B.
  • the contact carrier 2B includes a thermally conductive plastic.
  • the housing 2 of the load-break switch 1 is used to hold several NH fuses.
  • a thermally conductive contact carrier 2B is preferably provided, as is shown, for example, in 3 is shown.
  • the housing 2 contains the circuit breaker 1 three NH fuses NH1, NH2, NH3 for three different current phases L1, L2, L3.
  • the NH fuse switch disconnector 1 can be mounted on current-carrying rails, in particular busbars. When assembled, the housing 2 of the load-break switch 1 is aligned vertically. Waste heat generated by NH fuses located in the housing 2 is dissipated by convection inside the housing 2 laterally past the NH fuses arranged above and upwards out of the housing 2 to the environment.
  • the NH fuses located in the electrically insulating housing 2, for example the three in 1 NH fuses NH1, NH2, NH3 shown can be switched at the same time by means of a manually operated control unit 3 attached to the housing 2.
  • the manually operable operating unit 3 can be designed to be tool-safe together with the housing 2 .
  • the manually operable control unit 3 is connected to a switching mechanism for the NH fuses.
  • this switching mechanism has a parallel pull-out for switching the NH fuses.
  • the switching mechanism can also have a pivoting pull-out for the NH fuses with a pivot point, which is preferably arranged at the lower end of the housing 2 of the NH fuse switch disconnector 1 .
  • the switching mechanism provides a mechanism for moving the fuses in and out of fuse holders.
  • Each of the NH fuses can be provided for a specific phase L1, L2, L3 of the power supply network.
  • the housing 2 contains three NH fuses to protect three current phases L1, L2, L3.
  • the housing 2 contains a first NH fuse NH1 and a second NH fuse NH2 arranged side by side as in 1 recognizable.
  • a third NH fuse NH3 is arranged above these two adjacent NH fuses NH1, NH2.
  • Waste heat generated by the first NH fuse NH1 is conducted past a first side surface of the third top NH fuse NH3. Furthermore, the waste heat, which is generated by the second LV HRC fuse NH2 arranged next to it, is conducted laterally past an opposite side surface of the third LV HRC fuse NH3 lying on top, without warming up or heating up the third LV HRC fuse NH3 in the process.
  • the various NH fuses can be provided for different L phases.
  • the first NH fuse NH1 is provided for a first current phase L1
  • the second NH fuse NH2 for a third current phase L3
  • the third NH fuse NH3 for a second current phase L2.
  • the third NH fuse located in the housing 2 is NH3 in relation to the two in the installed state, the NH fuses NH1, NH2 arranged next to one another underneath are offset in the housing 2 toward the rear of the housing 2.
  • the NH fuse NH3 is thus to a certain extent lower, ie offset towards the rear, than the fuses NH1, NH2. This makes it possible for additional waste heat to be dissipated upwards through a fuse cover of the load-break switch 1 in the installed state.
  • the housing 2 of the NH fuse switch-disconnector 1 has mounting elements for mounting the switch-disconnector 1 on horizontally arranged current-carrying rails, in particular busbars, on its rear side.
  • These mounting elements include, for example, latching elements for mechanical connection with corresponding connection contours.
  • the mounting elements include, for example, four latching hooks that are suitable for mechanically fixing the device or housing to corresponding connection contours.
  • two of these latching hooks or latching elements 4-1, 4-2, which are provided on the back of the housing 2 can be seen.
  • figure 7 shows a rear view in which all four latching hooks 4-1, 4-2, 4-3, 4-4 can be seen.
  • contact elements are provided for making electrical contact with current-carrying rails, in particular busbars.
  • one or more plug-in contact elements are provided for each current phase L on the back of the housing 2 of the NH fuse switch disconnector 1, which can be inserted into corresponding contact slots of an associated busbar or a rail adapter for current-carrying rails.
  • two plug-in contact elements are available for each current phase L electrical contacting of current-carrying rails on the back of the housing 2 of the load-break switch 1 is provided.
  • figure 5 and 7 show an embodiment in which two plug-in contact elements for each phase L are provided on the back of the housing 2 of the load-break switch 1.
  • the two upper electrical plug contacts 5A, 5B are used to contact a first current-carrying rail
  • the electrical plug contact elements 6A, 6B in the middle are used to contact a second current-carrying rail
  • the electrical plug contact elements 7A, 7B at the bottom in the assembled state are used to contact a third live rail.
  • the current-carrying rails are preferably busbars. In a preferred embodiment, these busbars have corresponding contact slots. These contact slots are arranged in a predetermined grid transversely to the longitudinal direction of the current-carrying rail or busbar.
  • a current-carrying busbar accordingly has a multiplicity of evenly spaced contact slots which are designed to accommodate the corresponding plug-in contact elements.
  • the plug contact elements 5, 6, 7 consist of an electrically conductive material and, as in figure 5 recognizable, V-shaped so that they can be easily inserted into corresponding contact slots to mount the load-break switch 1 on the current-carrying rails.
  • the current-carrying rails are busbars, which have contact slots, contained in an insulating housing which, on the one hand, has feed-through contact slots on its front side.
  • the plug contact elements 5, 6, 7 of the NH fuse switch disconnector 1 through the feed-through slots of the insulating busbar housing inserted through into the contact slots of the corresponding busbars immediately below.
  • the load-break switch 1 is provided for three different current phases L1, L2, L3 and can be plugged into three mutually parallel busbars, which transport the different current phases.
  • These three busbars can be located in an insulating housing which has suitable feed-through contact slots on its front. In one possible embodiment, the three busbars are 60 mm apart from one another.
  • the in figure 5 recognizable plug-in contact elements 5, 6, 7 are inserted into contact slots of a corresponding rail adapter, which in turn is mounted on conventional busbars.
  • each of the plug contact elements 5A, 5B, 6A, 6B, 7A, 7B is mechanically protected by two protective ribs arranged on both sides, as in FIGS figure 5 and 7 recognizable.
  • These protective ribs prevent deformation of the plug contact elements.
  • the protective ribs are preferably designed in such a way that they can also be inserted into corresponding contact slots and thus significantly increase the mechanical stability of the load-break switch 1 placed on the busbars.
  • the housing 2 of the NH fuse switch-disconnector 1 has a clamping device for each current phase L for connecting a device to the switch-disconnector 1.
  • clamping devices are located on the lower front side of the Switch disconnector 1 provided.
  • the access contacts are designed as clamping contacts and can make mechanical and electrical contact with solid busbars, which preferably have a rectangular cross section.
  • the load-break switch 1 has three frame clamping devices 8-1, 8-2, 8-3 for three current phases L1, L2, L3 in the assembled state on the lower face. Power contact lines of a device to be connected can be inserted into the frame clamping devices 8-1, 8-2, 8-3 and tightened using an associated screw 9-1, 9-2, 9-3. Other types of clamps, such as spring clamps, are possible.
  • the housing 2 of the NH fuse switch disconnector 1 When installed, the housing 2 of the NH fuse switch disconnector 1 has supply slots 10 on its lower face for supplying a cooling medium, in particular air. Furthermore, the housing 2 has in the assembled state of the load-break switch 1 on its upper face slots 11 for Dissipation of the waste heat generated by the NH fuses. Furthermore, the housing 2 has dissipation slots 12 located on its longitudinal sides, which also serve to dissipate the waste heat generated by the NH fuses.
  • the operating unit 3 of the NH fuse switch disconnector 1 preferably has an actuating handle 3A which is provided with two guide brackets 3B, 3C which are connected to the switching mechanism for the NH fuses.
  • the two guide brackets 3B, 3C can be connected to a snap-action switching mechanism for operator-independent switching of the switching contact arrangement.
  • a removable fuse cover is provided on a front side or front side of the housing 2 of the NH fuse switch disconnector 1 .
  • this safety cover can have viewing windows.
  • the fuse cover covers the NH fuses.
  • the fuse cover can be locked both when the load-break switch 1 is switched on and when the load-break switch 1 is switched off.
  • the contact carrier 2B which is part of the housing 2.
  • the contact carrier 2B can be inserted into a lower part 2A.
  • the contact carrier 2B carries, as in 3 recognizable, the access contacts 5, 6, 7 and the outgoing contacts 8-i.
  • the contact carrier 2B carries the fuse contacts on the input side and the fuse contacts on the output side.
  • the fuse contacts have Lyra contacts into which a blade contact of an NH fuse can be inserted.
  • the contact carrier 2B is used for recording of three NH fuses NH1, NH2, NH3, each of which has a blade contact at both ends that can be inserted or switched into a Lyra contact.
  • the Lyra access-side contacts are each connected to one or more access contacts via an integral conductive access link.
  • each lyre contact provided on the access side is electrically connected to two symmetrically arranged access contacts, which form an access contact pair.
  • the Lyra contacts provided on the outgoing side are each electrically connected to a clamping device 8-i via an integrated conductive outgoing connection.
  • the various contacts, ie the incoming contacts 5, 6, 7, the outgoing contacts 8 and the internal fuse contacts, in particular Lyra contacts are thermally closely coupled to the contact carrier 2B, which preferably has a thermally highly conductive or thermally conductive plastic.
  • the contacts are at least partially pressed into corresponding recesses in the contact carrier 2B.
  • the load-break switch 1 has access contacts and outgoing contacts.
  • the access contacts are formed by the plug contact elements 5, 6, 7 connected to the fuse contacts.
  • the load-break switch 1 thus has six access contacts.
  • the outgoing contacts are formed by the box terminals 8-1, 8-2, 8-3.
  • the three symmetrically arranged access contacts 5A, 5B, 6A, 6B or 7A, 7B are internally connected to the corresponding access lines by means of a first fuse contact NH fuse inside the housing 2 connected. When switched on, each NH fuse is inserted or switched on on the one hand in an incoming fuse contact and on the other hand in an outgoing fuse contact.
  • the actuating handle 3A of the operating unit 3 of the load-break switch 1 can be moved downwards in the longitudinal direction of the load-break switch 1 mounted vertically on the current-carrying rails to switch off the switching contact arrangement located in the contact carrier 2B. Conversely, the operating unit 3 is moved upwards to switch on the switching contact arrangement of the load-break switch 1 mounted vertically on the current-carrying rails. This makes it easier to switch off or pull out the NH fuses from the Lyra contacts quickly.
  • the power density (Watt/cm 3 ) of the power isolating switch 1 is significantly increased compared to conventional power isolating switches.
  • the power density indicates the maximum power loss of the fuses in relation to the device or housing volume.
  • the fuses have a power loss of up to 9 watts.
  • Conventional devices have a power density of 0.022 watts/cm 3 .
  • the NH fuse switch disconnector according to the invention has a power density of 0.036 watts/cm 3 based on a maximum power loss of 3 NH fuses (corresponding to 25 watts) and a device or housing volume of the housing 2 .
  • Circuit breaker 1 is particularly suitable for NH000 fuses. Furthermore, circuit breaker 1 can also be used for NH fuses of type NH00.
  • the housing 2 has the NH fuse switch disconnector 1 has a width of 49.5 mm, a height of 164 mm and a depth of 85 mm.
  • the housing 2 of the switch-disconnector 1 is therefore relatively small compared to conventional switch-disconnector housings (conventional circuit-breakers have, for example, a width of 53 mm and a height of 200 mm).
  • the installation space or installation space required by the load-break switch 1 according to the invention, in particular within a switch cabinet, is correspondingly small, so that more space remains for other devices or current consumers mounted on the busbars.
  • the air supplied from below through the feed slots 10 flows around the LV HRC fuses NH1, NH2 which are located below in the installed state and which are provided, for example, for the phases L1, L3, and the waste heat from the LV HRC fuses NH1, NH2 located below is discharged to the side discharged upwards through the discharge slots 11, 12 from the housing 2 to the environment by convection past the NH fuse NH3 arranged above.
  • the heated air can flow out between the operating element 3 through the discharge slots 11, 12, for example. This is also shown schematically in 6 shown.
  • the input and output contacts of the NH -fuse switch-disconnector 1 embedded in the thermally conductive contact carrier 2B which dissipates the thermal energy in a targeted manner from the critical area of the lower NH fuses NH1, NH2 to the area of the third NH fuse NH3 arranged at the top and to the upper end face of the housing 2. There she can Heat energy are released to the environment by convection and / or radiation.
  • the embodiment described in connection with the various figures relate to a load-break switch 1 with three NH fuses. Further embodiments of the load-break switch 1 are possible, in which more than three NH fuses are integrated within the housing 2. In addition, further embodiments of the load-break switch 1 according to the invention are possible.
  • the operating unit is designed to be tool-safe, for example IP30.
  • the guide brackets 3B, 3C of the operating unit 3 can be guided in a tool-safe operating unit 3 of the housing 2.
  • the guide brackets 3B, 3C of the actuating handle 3A of the tool-safe operating unit 3 can be guided in associated side parts of the housing 2 of the load-break switch 1 along several protective bulges.
  • these protective bulges can be nested with one another in such a way that no tool can be inserted into the interior of the housing 2 of the NH fuse switch disconnector 1 .
  • the guide brackets 3B, 3C of the actuating handle 3A of the tool-safe operating unit 3 each have at least one S-shaped bulge that encloses at least one associated protective bulge without contact.
  • the NH fuses that can be used in the NH fuse switch-disconnector 1 can preferably each be switched in a current path with a switching contact arrangement.
  • the blade contacts of the NH fuses are used in two opposite fuse contacts, in particular Lyra contacts, of a pair of fuse contacts.
  • Other design variants of the load-break switch 1 according to the invention are possible.
  • integrated ventilation ducts can be provided within the housing 2 of the NH fuse switch disconnector 1 in order to dissipate the waste heat and/or switching gases upwards.
  • the NH fuse switch disconnector 1 is mounted in a vertical orientation on horizontally arranged current-carrying rails or busbars. This achieves a significant saving in space, for example within a control cabinet.
  • the actuating handle 3A of the operating unit 3 can be sealed both when it is switched on and when it is switched off.
  • the NH fuse switch disconnector 1 can have a mechanical cover lock for locking the protective cover in a possible embodiment variant.
  • the fuse or protective cover preferably covers the screws 9-i of the box terminals 8-i when the NH fuse switch-disconnector 1 is switched on, i.e. when the actuating handle 3A of the operating unit 3 is at the top. This increases safety for the user.
  • the viewing pane can be moved upwards in order to release inspection holes. The test holes allow the user to carry out a voltage test on the NH fuses.
  • the contact carrier 2B preferably contains a thermally conductive plastic.
  • the lower part 2A and the fuse cover of the housing 2 are preferably formed from a heat-insulating plastic.

Landscapes

  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP18162088.1A 2018-03-15 2018-03-15 Nh-sicherungs-lasttrennschalter Active EP3540752B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18162088.1A EP3540752B1 (de) 2018-03-15 2018-03-15 Nh-sicherungs-lasttrennschalter
PL18162088.1T PL3540752T3 (pl) 2018-03-15 2018-03-15 Rozłącznik bezpiecznikowy NH
ES18162088T ES2923297T3 (es) 2018-03-15 2018-03-15 Disyuntor de fusible NH
CN201910198934.3A CN110277289B (zh) 2018-03-15 2019-03-15 Nh熔丝负载断路开关

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18162088.1A EP3540752B1 (de) 2018-03-15 2018-03-15 Nh-sicherungs-lasttrennschalter

Publications (2)

Publication Number Publication Date
EP3540752A1 EP3540752A1 (de) 2019-09-18
EP3540752B1 true EP3540752B1 (de) 2022-05-11

Family

ID=61683698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18162088.1A Active EP3540752B1 (de) 2018-03-15 2018-03-15 Nh-sicherungs-lasttrennschalter

Country Status (4)

Country Link
EP (1) EP3540752B1 (zh)
CN (1) CN110277289B (zh)
ES (1) ES2923297T3 (zh)
PL (1) PL3540752T3 (zh)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310753U1 (de) * 1993-07-17 1993-09-30 Alfred Wöhner GmbH, 96472 Rödental Sicherungselement für Stromschienensysteme
EP0924736B1 (de) * 1996-02-28 2001-05-23 Wermelinger AG Sicherungs-Lastschaltgerät und/oder -Trennschaltgerät
EP1251538B1 (de) * 2001-04-20 2006-06-07 Jean Müller GmbH Elektrotechnische Fabrik Schmaler dreipoliger Sicherungslasttrennschalter
DE102007043133B3 (de) * 2007-09-11 2009-04-09 Wöhner GmbH & Co. KG Elektrotechnische Systeme Lasttrennschalter
JP5081581B2 (ja) * 2007-10-30 2012-11-28 矢崎総業株式会社 ヒュージブルリンクユニット
JP5771439B2 (ja) * 2011-04-27 2015-08-26 矢崎総業株式会社 ヒューズ回路構成体
EP2913835B3 (de) * 2014-02-26 2021-05-19 Wöhner Besitz GmbH Sicherungslasttrennleiste für Niederspannungs-Hochleistungs-Sicherungen
CN204242920U (zh) * 2014-11-10 2015-04-01 上海万纳电气设备有限公司 可选相分合的熔断器式隔离开关
CN204315441U (zh) * 2015-01-26 2015-05-06 浙江茗熔电器保护系统有限公司 组合式熔断器式隔离开关
CN205789850U (zh) * 2016-02-29 2016-12-07 浙江正泰电器股份有限公司 低压熔断器

Also Published As

Publication number Publication date
CN110277289A (zh) 2019-09-24
ES2923297T3 (es) 2022-09-26
CN110277289B (zh) 2021-05-18
PL3540752T3 (pl) 2022-09-26
EP3540752A1 (de) 2019-09-18

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