DE102007059094B3 - Multi-polar electric circuit breaker arrangement for use in lifting device, has lever shaft whose on-position is transmittable on to monitoring contact of signal line, in all positions of carrier between operating and test positions - Google Patents

Abstract

The arrangement has a signal line formed as a control connection attached to a bus coupling with a monitoring contact (62) that is arranged at a socket (14). The monitoring contact is actuated with mechanical control, which is effectively connected with a gearshift lever shaft (30) of a multi-polar electric circuit breaker (10) and is movable with the gearshift lever shaft. An on-position of the gearshift lever shaft is transmittable on to the monitoring contact of the signal line, in all positions of a carrier between operating and test positions.

Description

The The invention relates to a arranged in a Ausfahreinrichtung multi-pole, low-voltage electrical circuit breaker, with a drive mechanism on a carrier is movable in a socket.

Low-voltage switchgear, Such as engine switchgear or power distribution systems, are often executed in the so-called insertion technique. With that it is possible to have one quick replacement or verification of to make a functional unit of summarized components, whereby low during maintenance or short interruptions Downtime of the electrical equipment can be achieved.

The Positions that the extension device with the circuit breaker can take, are the on or Operating position, the test position and the disconnected position. In the Operating position, the load current is passed through the circuit breaker and Auxiliary or control circuits for Switching, control and signaling purposes are closed via appropriate terminals.

For test or maintenance purposes, the extension device from the operating position moved out into the test position, whereby only the operating current or main flow is interrupted. The circuits for control and reporting currents of individual functional components remain closed in this position. The connecting elements (terminals and contacts) which are the control and reporting currents to lead, remain in the positions between operational and test position contacted. The circuit breaker are on the extension device normal auxiliary switch for opening and Shut down associated with the control circuits.

The contacts of the auxiliary switches are via actuating means in operative connection with the extension device such that the control circuits connected by the auxiliary switch contacts are opened (control circuits are de-energized) when the extension device has reached the disconnected position. Such arrangements are for example in the WO 91-16742 A1 shown.

Through the use of automation technology in switchgear increasingly information technology functions are routed and queried via bus lines, as well as via dedicated signal lines. Signal lines can be routed via separate plug-in devices (also in the WO 91-16742 A1 ). In the switching and protection components, especially in circuit breakers communication modules are present, which are coupled for data exchange via the bus line, the individual components access the bus and controlled via the bus switch functions and / or queried.

Further arrangements of circuit breakers on a take-off device are known, in which auxiliary circuits or control circuits are present, which are used in particular for displaying and / or reporting one of the positions of the extension device ( EP 0986153 A1 ; FR 2782579 A1 ).

It The object of the invention is to provide a measure that in Operating and in test position of the circuit breaker switch functionalities over a Bus to query.

It is thus proposed on the travel of the extension device from the operating position to the test position via signal lines and query contacts make switching-technical functions queryable. It stays Receive and receive active signaling access to functions, Allow contact positions and / or message signals.

preferred Embodiments of the invention are formulated below. these can be realized in individual or in combination with each other.

Of the Query contact opens and close together with the switching movement of the switching shaft. It can about the Bus coupling the position of the main current contacts and / or the Auxiliary switch contacts are reported.

Open and Shut down the query contacts is possible on the entire path between operating position to the test position together with the main circuit contacts and the auxiliary switch contacts.

Of the at least one interrogation contact is fixed to the base of the circuit breaker arranged.

Of the at least one query contact can be actuated with a control.

The Control is operatively connected to the auxiliary contact actuating means and movable together with them, wherein the auxiliary contact actuating means together with the main circuit contacts and the auxiliary switch contacts open and close the at least one query contact.

For geometrical and structural design of the control of the query contacts is executed:
The mechanical control for wiring the signal lines is arranged on the circuit breaker and designed so that the signal lines open be when the circuit breaker via the drive mechanism in the removal position, where the circuit breaker is removable from the extension device. In this position, all mechanical and electrical connections and contacts for removing the circuit breaker are solved.

The Auxiliary contact actuator consist of a lever linkage for one same-directional transmission the rotational movement of the switching shaft of the circuit breaker on a Auxiliary contact drive shaft, wherein the lever linkage in the following as a drive rod designated extension has, by means of which the query contacts open by the movement of the lever linkage and shut down.

The lever linkage may consist of a coupling rod, which is between each the shift shaft and attached to the auxiliary contact drive shaft Levers is articulated. Thus, the rotational movement of the shift shaft in the same direction transferable to the auxiliary contact drive shaft. The coupling rod is over her lying on the auxiliary contact drive shaft end out in shape extended the control rod and provided at the end of the Ansteuerstange with an actuating arm, with the the switch tappets the Query contacts are activated.

Of the actuating arm is angled at right angles from the Ansteuerstange and has a longitudinal extent in the direction of the travel movement of the extension device, the way corresponds to the extension device between operating position and Test position covers. The actuating arm has a further perpendicular to the longitudinal extent lying transverse extent, the largest distance of all existing Query contacts corresponds, so that the actuating arm each switch plunger of the reached existing query contacts and can operate them simultaneously.

The lever linkage can be movable parallel to one of the sidewalls of the circuit breaker be arranged.

details The invention is illustrated in the figures, which in detail represent

1 a circuit breaker with selector shaft in the OFF position,

2 as 1 , but shift shaft in ON position,

3 a view of the arrangement with covered by switch cover circuit breaker,

4 Side view of circuit breaker in test position,

5 Side view of circuit breaker in disconnected position,

6A Representation of the circuit diagram in operating position I,

6B Schematic in test position II and

6C Schematic in disconnected position III.

The 1 and 2 show a circuit breaker 10 , which is housed in a Isolierstoffgehäuse, with removed switch cover 12 , The circuit breaker sits on a support, with a drive mechanism in the depth of the base 14 in and out is mobile. In 1 and 2 is the carrier with the circuit breaker in the operating position (retracted position, also position I in 6 ). When moving out of the carrier, the circuit breaker 10 occupy at least two positions, namely a test position ( 4 , also position II in 6 ) and a disconnected position or extended position ( 5 , also position III in 6 ). The carrier is mounted on means not shown movable in the base. The carrier may be formed as a drawer, which is movable on lubricants such as rollers, runners or rails. As part of a - here manually operable - drive for the carrier is in 3 a crank 24 and the associated axis of rotation recognizable.

The switch cover 12 mainly serves the protection against contact. It can be safely removed when the circuit breaker is de-energized. As a central action element lies horizontally in the circuit breaker a switching shaft 30 , which is the opening and closing of the main circuit switch contacts 15 the Pole serves (see 6 ). In the usual way, the switching shaft is acted upon by a switching mechanism (not shown) or by an additional auxiliary switching mechanism.

The main power rail terminals 18 every pole of the main stream 16 are forcibly (mechanically) opened when the circuit breaker on the carrier is moved out of the operating position via manual or motorized drive means (see positions in 6A and 6B ). Switching of the circuit breaker (operation of the contacts 15 ) is with the main power rail terminals open 18 , especially for test purposes possible.

On the way from the operating position to the test position remain the contact terminals 54 the auxiliary current paths 52 but still closed because the contact terminals 54 the auxiliary current paths 52 be carried along this way. The auxiliary current paths are still under voltage and can through the switching of the auxiliary switch 50 be activated and deactivated, whereby the functions of the components of the control and signaling circuits ( 52 ) are testable. Only when the circuit breaker is moved further into the disconnected position, the contact terminals 54 the electricity railways 52 (also forced) opened.

The core of the invention is that in the operating and test position at least one signal line can be activated (as control connections via a bus line). Signal connections via such signal lines 66 , for example, with access to functions, contact positions and / or alarm signals remain active, are interrogatable and / or beschaltbar. The considered circuit breaker remains electronically 'accessible' in addition to other devices connected via a bus. For signaling via the signal line 66 becomes a mechanical control 40 used.

The query contact control 40 is with the switching operation for the auxiliary switch 50 coupled such that upon actuation of the auxiliary switch 50 in the test position the query contacts 62 the signal line 66 be forcibly connected.

On (according to 1 or 2 right-sided) end of the switching shaft 30 is a lever 34 arranged, with the parts to be described 35 . 36 . 41 and 42 the query contact control 40 forms. Parallel to the switching shaft 30 and above it is located in the circuit breaker with a control disc (or cam) provided auxiliary contact drive shaft 38 for actuating the contacts of the auxiliary switch 50 , The auxiliary contact drive shaft is not visible in the figure. At the end of the auxiliary contact drive shaft is a lever 36 that is above the coupling rod 35 with the lever 34 is in active connection. With actuation of the switching shaft 30 the auxiliary contact drive shaft rotates in the same direction 38 ,

The main stream 16 is opened or closed by switching the circuit breaker. With the OFF switching movement is a rotation of the switching shaft 30 connected by about 90 °, which is a left turn according to the figures. The right-hand or left-hand rotation of the selector shaft is applied to the rod gear ( 34 . 35 . 36 ), which in turn via the auxiliary contact drive shaft 38 via the stroke A with the contacts of the auxiliary switch 50 is in active connection. The rod gear is arranged parallel to a side wall. This refers to the right side wall in the figure view, which is omitted in the drawing. The rod gear consists of a on the shift shaft 30 attached lever 34 , which via the vertically movable coupling rod 35 again with the lever attached to the auxiliary contact drive shaft 36 a co-rotation of the auxiliary contact drive shaft 38 causes.

In 1 has the switching shaft 30 the OFF position for the switch contacts 15 ingested. The rod transmission is in a position in which the contacts of the auxiliary switch 50 are not charged. After a clockwise rotation of the stem (about 90 °) takes the rod transmission in 2 shown position. The auxiliary switches 50 and the query contacts 62 are pressed.

The inventive mechanical query contact control 40 consists essentially of a vertical extension 41 the coupling rod 35 , The extension should be in the further with Ansteuerstange 41 be designated. The control rod 41 has at its upper end a right angle arranged actuating arm 42 , whereby the actuating arm is located in a plane parallel to the direction of movement of the circuit breaker, which is a horizontal plane according to the figurative representation here. The with the rotation of the switching shaft 30 Connected hub moves the actuator arm 42 about a stroke A up and down. The change in position of the rod transmission from the position of 1 in the position of 2 done by turning the selector shaft clockwise 30 , causing an upward movement of the coupling rod 35 together with the control rod 41 takes place. The control rod 41 gets into its upper position. Here comes the actuating arm 42 for engagement with the switch plunger of the query contact 62 , or to all switch plunger of the existing query contacts, of which several parallel next to each other on the base 14 can be arranged. The switch plunger of the query contacts 62 lie parallel to the plane in which also the actuating arm 42 lies, namely (as mentioned) in a horizontal plane. By the upward movement of the coupling rod 35 is the switch plunger of the (an existing) query contact, or the contacts of all existing query contacts are applied. The query contacts open and close together with the main current path contacts and the auxiliary switch contacts, so that the position of the main current path contacts are reported via the bus coupling (see. 6A and 6B ).

In 1 and 2 are two query contacts 62 drawn, side by side at a uniform height and parallel to the position of the switching shaft 30 at the base 14 are attached. The switch tappets 64 the query contacts 62 point down. A holder on the base 14 for the query contacts is not shown separately in the figures, but available. The actuating arm 42 has an extension in the direction of the ranking of the query contacts 62 with such a length that the actuator arm each switch plunger of the existing query contacts 62 reached. By this arrangement, the Abfra gekontakte 62 simultaneously from the control (control rod 41 , Operating arm 42 ) operable. In addition to the extension of the actuating arm in the direction of the sequence of query contacts 62 (This should be referred to as transverse extension), the actuating arm in the direction of the extension path B of the extension device has a longitudinal extent corresponding to the path that the extension device travels from the operating position to the test position. In this way, all - stationary on the socket housing remaining - query contacts 62 operated when the control rod 41 assumes its upper position. Thus, the purpose of the invention is achieved that all of the query contacts 62 switchable signal lines 66 on the entire travel path B of the circuit breaker from the operating position to the test position into open and close together with the main circuit contacts and the auxiliary switch contacts. Monitoring states and functions can thus be interrogated and / or reported via the signal lines.

Depending on the structural design and arrangement of the circuit breaker on the extension device, including support and base housing, a travel B of the extension device from the operating position to the test position have a length of 20 to 40 mm. By moving the circuit breaker on the extension device beyond the test position, the mechanical control is disengaged from the interrogation contacts, cf. Position III in 6C , There can be no joint operation of contacts 15 and 50 with the query contacts 62 occur.

The 3 shows the arrangement in which the circuit breaker 10 with a switch cover 12 is covered. On the housing of the socket 14 are two query contacts 62 recognizable. In the lower part of the base housing is a hand crank 24 drawn as an actuator for the extension a. In contrast to the 1 and 2 is the right side wall 22 present, so that the view is concealed on the discussed actuating means.

In 4 is a side view with position of the circuit breaker on the extension device in operating position (or test position) and in 5 a side view drawn in position in separation position. In 4 is the control rod 41 in their upper position. The actuating arm 42 is located on the one or more switch plunger (s) of the query contact or the query contacts 62 at. In 5 If the extension device has reached the length of the travel path B beyond. The control rod 41 and the actuating arm 42 are out of engagement with the query contacts 62 ,

In the subfigures 6A . 6B and 6C the circuit diagrams are shown according to the invention. In 6A is the carrier with the circuit breaker in the operating position (I), in 6B in the test position (II) and in 6C is the carrier with the circuit breaker in the disconnected position (III). In 6A are the terminals 18 the main stream 16 contacted, as well as the terminals 54 the auxiliary flow path (s) 52 , About the query contact control 40 can switch 15 (Switch contacts 15 of the circuit breaker) and auxiliary switch 50 simultaneously with the query contacts 62 be operated.

In 6B (Test position II) are the terminals 18 disconnected, the main stream 16 it is open. The clamps 54 the auxiliary flow path (s) 52 keep in touch. The auxiliary circuits 52 are supplied with power, the components of the auxiliary circuits are 'reachable'. Again, by means of control 40 simultaneously the switches 15 . 50 and 62 be operated.

In 6C is the carrier with the circuit breaker 10 have been moved to the separation position III. The control 40 comes out of engagement with the query contacts 62 ,

10

breakers

12

switch cover

14

base

15

Main circuit switch contacts

16

Main current path

18

Main circuit terminals

22

Side wall

24

actuator (Crank and rotation axis)

30

shift shaft

32

actuating means for auxiliary switch

34

Lever on selector shaft 30

35

coupling rod

36

lever to auxiliary contact drive shaft

38

Auxiliary contact drive shaft

40

control (Rod transmission) for query Contact

41

Ansteuerstange

42

operating arm, angled at right angles

50

auxiliary switch

52

current path for auxiliary or control circuit

54

Auxiliary current path terminals

62

query Contact

64

switch plunger

66

signal line

A

stroke

B

traverse

Claims (6)

Arrangement of a multi-pole electric circuit breaker in a Ausfahreinrichtung, where at the circuit breaker ( 10 ) on a support in a socket ( 14 ), and the arrangement comprises a bus interface via which data traffic to operating functions is possible via a bus, wherein the power switch ( 10 ), • with main power lines ( 16 ) with main circuit switching contacts ( 15 ) and main circuit terminals ( 18 ) for each pole, • with auxiliary current paths ( 52 ) with auxiliary switch contacts ( 50 ) and auxiliary power rail terminals ( 54 ), • and the circuit breaker ( 10 ) with extension means on the support from an operating position (I), in which the main power rail terminals ( 18 ) and the auxiliary power rail terminals ( 54 ) are closed, can be moved to other positions, - in the test position (II), the main power rail terminals ( 18 ) and the auxiliary power rail terminals ( 54 ) are closed, and in the release position (III), the main power rail terminals ( 18 ) and the auxiliary power rail terminals ( 54 ) are separated, - wherein the arrangement at least one signal line ( 66 ) as a control connection to a bus interface with one in the base ( 14 ) arranged query contact ( 62 ), and the query contact ( 62 ) of the at least one signal line ( 66 ) with a mechanical control ( 40 ) is actuated, characterized in that the control ( 40 ) with a switching shaft ( 30 ) of the circuit breaker ( 10 ) is operatively connected and movable with it, and that in all positions of the carrier between operating position (I) and test position (II) a position ON of the switching shaft ( 30 ) to the query contact ( 62 ) of the at least one signal line ( 66 ) is transferable. Arrangement according to claim 1, characterized in that the control ( 40 ) a lever linkage ( 34 . 35 . 36 ) with a coupling rod ( 35 ), wherein the coupling rod ( 35 ) between each at the switching shaft ( 30 ) and on an auxiliary switch contact drive shaft ( 38 ) mounted levers ( 34 . 36 ) is articulated and the rotational movement of the switching shaft ( 30 ) in the same direction to the auxiliary switch contact drive shaft ( 38 ), and the lever linkage ( 34 . 35 . 36 ) one above it on the auxiliary switch contact drive shaft ( 38 ) lying end protruding extension ( 41 . 42 ), by means of the ON position of the switching shaft ( 30 ) the query contact ( 62 ) can be acted upon. Arrangement according to claim 2, characterized in that the extension at the end of the Ansteuerstange ( 41 ) with an actuating arm ( 42 ), which at right angles from the Ansteuerstange ( 41 ) is angled and has a longitudinal extent in the direction of the travel movement (B) of the extension device, which corresponds to the path traveled by the extension device between operating position (I) and test position (II). Arrangement according to claim 3, characterized in that the actuating arm ( 42 ) has a perpendicular to the longitudinal extent transverse extent, the greatest distance of all existing and side by side on the base ( 14 ) mounted query contacts ( 62 ) corresponds. Arrangement according to one of the preceding claims, characterized in that the query contact ( 62 ) together with the auxiliary switch contacts ( 50 ) can be acted upon. Arrangement according to one of the preceding claims, characterized in that the lever linkage ( 34 . 35 . 36 ) movable parallel to a side wall ( 22 ) of the circuit breaker is arranged.