DE202007018438U1 - Plant container for a switchgear and associated ring cable branch - Google Patents

Abstract

Plant container for a switchgear with a switching device (9), which is a load disconnection, a grounding position, a contact position and a plurality of switching poles each having a corresponding one Cable connection busbar (16.1, 16.2, 16.3) and a cable connection bushing (17.1, 17.2, 17.3) with a cable connection (8.1, 8.2, 8.3) electrically with the respective cable connection (8.1, 8.2, 8.3) outside of the plant container via a Cable connection assembly is connected to an external cable, where the with the cable connections (17.1, 17.2, 17.3) connected switching poles in the grounding position of the switching device (9) each with a corresponding grounding contact of the switching device (9) are connected, characterized in that the grounding contacts of the switching device (9) each about a checkpoint busbar (6.1, 6.2, 6.3) and a test procedure (13.1, 13.2, 13.3) are connected to an external test point (15.1, 15.2, 15.3) are, with the external test points (15.1, 15.2, 15.3) during a normal mode over a grounding strap (12) are connected with each other and with a ground potential to the corresponding cable connections (8.1, 8.2, 8.3) in the grounding position of the ...

Description

The The invention relates to a plant container for a switchgear after Preamble of claim 1 and an associated Ringkabelabzweig for one Switchgear.

switchgear with such investment containers are, for example, gas-insulated switchgear type 8DJ20 Applicant known from the prior art, see Siemens catalog HA 45.31, 2007. Such switchgear, for example, for energy distribution used in network stations and may vary depending on the application one or more plant blocks include, for example, as branch cable connection, transformer branch and / or ring cable branch are executed. Here, a block designed as a ring cable branch comprises a cable connection space, a gas filled Switchgear vessel, in which a switching device is arranged is that over one outside of the plant tank arranged drive is switchable, that of one at the front area the switchgear arranged control panel is controlled. The at least one switchgear is designed, for example, as a switch-disconnector, which has three switch positions Load separation function, a grounding function and a contact function performs. Inside the gas filled switchgear vessel are several grounding contacts of the switching device via a connecting rail interconnected and grounded, d. H. connected to ground potential. The switching device has several switching poles, each having a corresponding Cable connection busbar and a cable gland with a cable connection are electrically connected. Through cable feedthroughs the corresponding cable connection is made in the cable connection compartment guided, the cable connections in the cable compartment each over corresponding connection modules connected to an external cable are. To carry out a cable test becomes the switching device switched into a grounding position, so that a cover of the cable connection space can be removed. Subsequently, the appropriate must Cable connection assembly are at least partially removed to the one to be tested Connect the cable to a corresponding cable test set.

task The present invention is a plant container for a switchgear and an associated one Specify a ring cable branch, which is a simple check of a connected cable enable.

The Invention solves this task by a plant container for a switchgear with the Features of claim 1 and by an associated Ringkabelabzweig for one Switchgear with the features of claim 8. Advantageous embodiments and further developments of the invention are subject of the dependent claims.

According to the invention are ground contacts a switching device each over a checkpoint busbar and a test procedure with an external checkpoint connected. The external exam points are during a normal mode over a grounding strap connected with each other and with the ground potential to corresponding ones cable connections in a grounding position of the switching device during normal mode to connect to the earth potential. The corresponding cable connections are each over a cable connection busbar and a cable connection feedthrough with a Switching pole of the switching device electrically connected, wherein in the grounding position of the switching device the with the cable connections connected switching poles each with a corresponding grounding contact of the switching device are connected. Thus, in the present invention, a ground the grounding contacts, which is currently running in the plant tank removed from this and over the outside of the investment tank executed check points carried out. The respectively over corresponding test procedures, for example, gas-tight in a container wall, preferably in a Ceiling of the equipment tank are introduced, to the outside guided checkpoints enable advantageously a simple and quick check of the externally connected cables outside of the plant container via a Cable connection module each with a corresponding cable connection are connected.

In Embodiment of the plant container according to the invention the grounding strap while a test mode from the checkpoints removed while being the test mode the checkpoint with a cable test set is connected, which in the grounding position of the switching device on the switchgear and the corresponding cable connection with a cable to be tested connected is. As already stated above, can by the direct Connection between the external test point and the connected Cable over The switching device connected to the earthing position makes cable testing easy and executed quickly be since the review of the corresponding connected cable in an advantageous manner possible is open without a cable compartment and a corresponding Cable connection assembly of the cable to be tested must be partially dismantled.

When using the system container in a three-phase system, three switching poles of the switching device are electrically connected via three cable connection busbars and three cable connection feedthroughs with three cable connections, with three grounding contacts of the switching device via three test point and three Prüfdurchführungen with three external test points are connected.

In Another embodiment of the plant container are the test procedures and the checkpoints below arranged a lockable cover. For a high level of operational safety to enable the lock of the cover is designed so that the cover only can be removed when the switching device is switched to the grounding position is. Furthermore, the locking of the cover is designed so that the switching device is blocked in the grounding position when the grounding strap of the checkpoints dismantled and / or the cover is removed. The lock advantageously prevents an operator from dismantling the grounding bridge, before putting the switchgear has switched to the grounding position. In addition, the lock prevents the indexing of the switching device in another switching position, as long as the grounding rail is not is mounted and the cover is not closed.

Of the Inventive plant container can used for example in a ring cable branch for a switchgear be, with the switching device via a outside of the plant tank arranged drive is switchable, controlled by a control panel is having at least one display element and at least one control element.

following The invention will be explained in more detail with reference to drawings. Showing:

1 a perspective top view of a portion of an investment container according to the invention, wherein the lid of the investment container for Dar position of the inner components is shown transparent,

2 a perspective rear view of the in 1 shown area of the investment tank according to the invention, wherein the investment tank is shown without back wall,

3 a perspective view of a switchgear with a plant container according to the invention,

4 a perspective view of an upper portion of the switchgear off 3 with a removed cover, and

5 a perspective view of a detail 4 ,

each other corresponding parts are in all figures with the same reference numerals Mistake.

How out 1 and 2 can be seen comprises a plant container 3 for a ring cable branch 2 in a switchgear 1 a switching device 9 comprising a load disconnect, a ground, a contact position and a plurality of switching poles and ground contacts, wherein the switching device 9 over one outside the plant tank 3 arranged drive can be switched, via a drive coupling 7 with the switching device 9 is coupled. The switching poles are each via a cable connection busbar 16.1 . 16.2 . 16.3 and a cable terminal bushing 17.1 . 17.2 . 17.3 with a cable connection 8.1 . 8.2 . 8.3 electrically connected. The respective cable connection 8.1 . 8.2 . 8.3 is outside the plant container 3 connected in a known manner in a cable connection region, not shown, via a cable connection assembly, not shown, with an external cable, not shown. The earthing contacts of the switching device 9 are each via a Prüfpunktverschienung 6.1 . 6.2 . 6.3 and one in the lid of the plant container 3 arranged test execution 13.1 . 13.2 . 13.3 with an external checkpoint 15.1 . 15.2 . 15.3 connected. The with the cable connections 8.1 . 8.2 . 8.3 connected switching poles are in the grounding position of the switching device 9 each with a corresponding ground contact of the switching device 9 connected.

The plant tank shown 3 with the switching device 9 is designed for use in a three-phase network, so that a first switching pole of the switching device 9 via a corresponding first cable connection busbar 16.1 and a first cable terminal bushing 17.1 with a first cable connection 8.1 electrically connected. A second switching pole of the switching device 9 is via a corresponding second cable connection busbar 16.2 and a second cable terminal bushing 17.2 with a second cable connection 8.2 electrically connected, and a third switching pole of the switching device 9 is via a corresponding third cable connection busbar 16.3 and a third cable terminal bushing 17.3 with a third cable connection 8.3 electrically connected.

How farther 1 and 2 is apparent, is a first ground contact of the switching device 9 via a corresponding first checkpoint busbar 6.1 and a first test procedure 13.1 with a first external checkpoint 15.1 connected. A second earthing contact of the switching device 9 is via a corresponding second checkpoint busbar 6.2 and a second test procedure 13.2 with a second external checkpoint 15.2 connected, and a third ground contact of the switching device 9 is via a corresponding third checkpoint busbar 6.3 and a third test procedure 13.3 with a third external checkpoint 15.3 connected. During a normal mode of operation are the external examination points 15.1 . 15.2 . 15.3 about one in 4 and 5 illustrated earthing bar 12 connected to each other and to a ground potential to the corresponding cable connections 8.1 . 8.2 . 8.3 in the grounding position of the switching device 9 to connect to the ground potential during normal mode.

How out 3 can be seen, includes a switchgear 1 , which is designed in the illustrated embodiment as a medium-voltage system with two Ringkabelabzweigen and a transformer branch, a plant cover 1.1 on which two covers 10.1 . 10.2 are arranged, each via a corresponding lock 11.1 . 11.2 are locked, a control panel 4 , the display elements 4.1 . 4.2 . 4.3 and actuators 4.4 . 4.5 includes, and three cable connection spaces each behind a corresponding cover 5.1 . 5.2 . 5.3 are arranged. Behind the control panel is the in 1 respectively. 2 illustrated plant container according to the invention 3 arranged here as a high-voltage space filled with a suitable gas, the test procedures 13.1 . 13.2 . 13.3 and the cable glands 17.1 . 17.2 . 17.3 gas-tight in a corresponding container wall of the plant container 3 are introduced. Within the system tank is a switching device for each branch 9 arranged, in each case over the outside of the plant container 3 arranged drive can be switched. The drives are via the control panel 4 controlled, wherein a first display element 4.1 is executed as an operation display element, the operating state or the standby state (also called operational readiness display) of the switchgear 1 indicates. Three second display elements 4.2 show the switching state of a grounding function, ie off or grounded, a corresponding switching device 9 the associated ring cable branch 2 or transformer branch. Three third display elements 4.3 show the switching state of a load disconnection function, ie on or off, a corresponding switching device 9 the associated ring cable branch 2 or transformer branch. Three first controls 4.4 correspond in the illustrated embodiment, a manual operation for driving the grounding function of the corresponding switching device 9 the associated ring cable branch 2 or transformer feeder, and three second controls 4.5 correspond to a manual operation for driving the load-separation function of the corresponding switching device 9 the associated ring cable branch 2 or transformer branch. The first and second controls 4.4 . 4.5 are executed in the illustrated embodiment as Steckhebelbetätigungen.

How farther 3 it can be seen, the grounding contacts of the switching devices of the two ring cable branches are each connected via a Prüfpunktverschienung and arranged in the lid of the equipment tank test execution with an external test point, the test points on the test procedures also from the plant cover 1.1 led out and under lockable covers 10.1 . 10.2 are arranged. The three in 1 and 2 shown test procedures 13.1 . 13.2 . 13.3 with the external checkpoints 15.1 . 15.2 . 15.3 a first switching device 9 of the first ring cable branch 2 for example, from a first cover 10.1 covered, which has a first lock 11.1 can be locked. Three in 1 and 2 not shown test procedures with external test points of a second switching device, not shown, a second Ringkabelab branch are from a second cover 10.2 covered, which has a second lock 11.2 can be locked.

Like from the 4 and 5 can be seen, are the under the first removable lock cover 10.1 arranged three external examination points 15.1 . 15.2 . 15.3 during a normal mode of operation via a grounding strap 12 together and over a mounting area 12.1 of the grounding strap 12 connected to a ground potential. How out 5 is apparent, are the external audit points 15.1 . 15.2 . 15.3 each with a connection screw 14.1 . 14.2 . 14.3 with the grounding strap 12 connected, in turn, at its attachment area 12.1 with the plant cover 1.1 is screwed and thereby connected to the ground potential.

The two locks 11.1 . 11.2 the two covers 10.1 . 10.2 are designed so that the covers 10.1 . 10.2 can only be removed when the corresponding switching device is switched to its grounding position in which the switching poles connected to the cable terminals are each connected to a corresponding grounding contact of the switching device.

In the illustrated embodiment, the in 1 and 2 illustrated switching device 9 in its grounding position, leaving the first latch 11.1 is released and the first cover 10.1 can be removed as from 4 and 5 is apparent. To carry out a test mode can in the grounding position of the switching device 9 the grounding strap 12 by loosening the connection screws 14.1 . 14.2 . 14.3 and grounding screws from the test points 15.1 . 15.2 . 15.3 be dismantled. Subsequently, the checkpoints can 15.1 . 15.2 . 15.3 be connected to a cable test set, with which on the switching device 9 and the corresponding cable connection 8.1 . 8.2 . 8.3 the connected cable can be checked without opening the cable connection compartment or without the cable connection module partially from corresponding cable connection 8.1 . 8.2 . 8.3 to remove. This can be one with the first cable connection 8.1 connected first cable via the first cable connection busbar 16.1 , the corresponding switching pole and the corresponding grounding contact of the switching device 9 , the first checkpoint busbar 6.1 and the first checkpoint 15.1 with one at the first checkpoint 15.1 be tested connected cable test set. One with the second cable connection 8.2 Connected second cable can via the second Kabelanschlussverschienung 16.2 , the corresponding switching pole and the corresponding grounding contact of the switching device 9 , the second checkpoint busbar 6.2 and the second checkpoint 15.2 with one to the second checkpoint 15.2 tested cable test set, and one with the third cable connection 8.3 Connected third cable can via the third Kabelanschlussverschienung 16.3 , the corresponding switching pole and the corresponding grounding contact of the switching device 9 , the third inspection point busing 6.2 and the third checkpoint 15.3 with one to the third checkpoint 15.3 be tested connected cable test set.

Furthermore, the two locks 11.1 . 11.2 the two covers 10.1 . 10.2 designed so that the corresponding switching device 9 is blocked in the grounding position when the grounding strap 12 and / or the cover 10.1 . 10.2 is removed. Therefore, prevent the locks 11.1 . 11.2 in that an operator makes the grounding strap 12 dismantled before switching the switchgear 9 has switched to the grounding position. Furthermore prevents the lock 11.1 . 11.2 that the switching device 9 is switched from the grounding position to another switching position, as long as the corresponding grounding strap 12 not mounted and the corresponding cover 10.1 . 10.2 not closed.

The Invention allows advantageously a review of connected cable without the corresponding cable connection space open and the corresponding cable connector assembly partially disassembled must become.

The Invention is not on the embodiments limited, but in the context of the Revelation often variable. All new, in the description and / or the drawings disclosed individual and Combination features are considered to be essential to the invention.

1

switchgear

1.1

Conditioner cover

2

Ring-main feeder

3

plant containers

4

control panel

4.1

Operating indicator

4.2

display element for earthing function

4.3

display element for load disconnection function

4.4

actuator for earthing function

4.5

actuator for load disconnection function

5.1

first Cable compartment

5.2

second Cable compartment

5.3

third Cable compartment

6.1

first Prüfpunktverschienung

6.2

second Prüfpunktverschienung

6.3

third Prüfpunktverschienung

7

drive coupling

8.1

first cable

8.2

second cable

8.3

third cable

9

Switch disconnectors

10.1

first cover

10.2

second cover

11.1

first lock

11.2

second lock

12

grounding strap

12.1

fastening area

13.1

first Test carried out

13.2

second Test carried out

13.3

third Test carried out

14.1

terminal screw

14.2

terminal screw

14.3

terminal screw

15.1

first checkpoint

15.2

second checkpoint

15.3

third checkpoint

16.1

first Cable busbar

16.2

second Cable busbar

16.3

third Cable busbar

17.1

first Cable feedthrough

17.2

second Cable feedthrough

17.3

third Cable feedthrough

Claims (9)

Plant container for a switchgear with a switching device ( 9 ), which has a load disconnection position, a grounding position, a contact position and a plurality of switching poles, each via a corresponding Kabelanschlussverschienung ( 16.1 . 16.2 . 16.3 ) and a cable connection bushing ( 17.1 . 17.2 . 17.3 ) with a cable connection ( 8.1 . 8.2 . 8.3 ) are electrically connected, wherein the respective cable connection ( 8.1 . 8.2 . 8.3 ) is connected to an external cable outside the plant container via a cable connector assembly, with the cable connections ( 17.1 . 17.2 . 17.3 ) associated switching poles in the grounding position of the switching device ( 9 ) each with a corresponding grounding contact of the switching device ( 9 ), characterized in that the grounding contacts of the switching device ( 9 ) in each case via a checkpoint busbar ( 6.1 . 6.2 . 6.3 ) and a test procedure ( 13.1 . 13.2 . 13.3 ) with an external checkpoint ( 15.1 . 15.2 . 15.3 ), the external audit points ( 15.1 . 15.2 . 15.3 ) during a normal mode of operation via a grounding strap ( 12 ) are connected to each other and to a ground potential to the corresponding cable connections ( 8.1 . 8.2 . 8.3 ) in the grounding position of the switching device ( 9 ) to connect to the ground potential during normal mode. Plant container according to claim 1, characterized in that the earthing strap ( 12 ) in a grounding position of the switching device ( 9 ) during a test mode of the test points ( 15.1 . 15.2 . 15.3 ), whereas during the test mode the test point ( 15.1 . 15.2 . 15.3 ) is connected to a cable test set, which via the switching device ( 9 ) and the corresponding cable connection ( 8.1 . 8.2 . 8.3 ) is connected to a cable to be checked. Plant container according to claim 1 or 2, characterized in that three switching poles of the switching device ( 9 ) via three cable connection busbars ( 16.1 . 16.2 . 16.3 ) and three cable feedthroughs ( 17.1 . 17.2 . 17.3 ) with three cable connections ( 8.1 . 8.2 . 8.3 ) are electrically connected, wherein three grounding contacts of the switching device ( 9 ) via three checkpoint busbars ( 6.1 . 6.2 . 6.3 ) and three test procedures ( 13.1 . 13.2 . 13.3 ) with three external test points ( 15.1 . 15.2 . 15.3 ) are connected. Plant container according to one of claims 1 to 3, characterized in that the test procedures ( 13.1 . 13.2 . 13.3 ) in a container wall, preferably in a ceiling of the plant container ( 3 ) are introduced. Plant container according to one of claims 1 to 4, characterized in that the test procedures ( 13.1 . 13.2 . 13.3 ) and the checkpoints ( 15.1 . 15.2 . 15.3 ) under a lockable cover ( 10.1 . 10.2 ) are arranged. Plant container according to claim 5, characterized in that the lock ( 11.1 . 11.2 ) of the cover ( 10.1 . 10.2 ) is designed so that the cover ( 10.1 . 10.2 ) is only removable if the switching device ( 9 ) is switched to the grounding position. Plant container according to claim 5 or 6, characterized in that the locking ( 11.1 . 11.2 ) of the cover ( 10.1 . 10.2 ) is designed so that the switching device ( 9 ) is locked in the grounding position when the earthing bar ( 12 ) of the test points ( 15.1 . 15.2 . 15.3 ) and / or the cover ( 10.1 . 10.2 ) is removed. Ring cable branch marked for a switchgear through a plant container according to one of the claims 1 to 7. Ring cable branch for a switchgear according to claim 8, characterized in that the switching device ( 9 ) via an outside of the plant container ( 3 ) arranged drive, wherein the drive from a control panel ( 4 ) is controlled, the at least one display element ( 4.1 . 4.2 . 4.3 ) and at least one control element ( 4.4 . 4.5 ) having.