DE102016124178A1 - Reclosure device - Google Patents

Abstract

In a reclosing device (1) with a Einschalthebel (14) for the predetermined controlled mechanical switching on, the reclosure device (1) associated with residual current circuit breaker (2) which Einschalthebel (14) is connected to a drive (3) of the reclosure device (1), wherein the reclosing device (1) has a bridging current path with connection means for bypassing a residual current circuit breaker (2), wherein in the bypass current path at least one switch (4) is arranged, wherein the switch (4) by a control unit of the reclosure device (1) is switchable, and wherein a fault current detection arrangement is arranged in the bridging path, it is proposed that the switch (4) has two spaced fixed contacts (5), and that the switch (4), as a resilient contact tongue (6) formed, movable switching bridge for the predetermined conductive connection of the two Fixed contacts (5).

Description

The invention relates to a reclosing device according to the preamble of claim 1.

There are so-called. Reclosing known, which are arranged or docked next to or laterally on residual current circuit breakers, wherein a start lever of the reclosure encompasses the manual operating lever of the residual current circuit breaker. In the event of tripping of the residual current circuit breaker this can be switched on again by means of the reclosing device either automatically or remotely controlled.

It is also known before turning on the residual current circuit breaker to check whether the fault current concerned still occurs at a, the residual current circuit breaker downstream subnet. Thereby, a re-triggering of the residual current circuit breaker can be prevented, which is detrimental to its contactor and trigger.

Restart devices and residual current circuit breakers are arranged in a distribution cabinet, which is why it is advantageous if they are designed to be as small as possible, currently available reclosures are usually larger than the residual current circuit breakers that are to turn them.

The object of the invention is therefore to provide a reclosing device of the type mentioned, with which the mentioned disadvantages can be avoided, and which has a low device volume.

This is achieved by the features of claim 1 according to the invention.

This allows a reclosing device can be achieved with a very small housing volume or a small size. As a result, the required by relevant regulations in this area at least 4 mm contact spacing can be achieved with a small size. This is not possible with conventional relays at this point. This makes it possible to operate both the switch and the switch lever with only one common drive. The relevant drive, which is usually designed in the form of an electromagnetic drive, requires the largest part of the device volume. By saving a drive, the volume or the size compared to versions with two separate drives can be significantly reduced.

The invention further relates to a method according to claim 8 for the mechanical actuation of a residual current circuit breaker by means of a reclosing device according to claim 6 or 7.

The subclaims relate to further advantageous embodiments of the invention.

It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.

• 1 einen Stromlaufplan einer elektrischen Installationsumgebung mit einem Fehlerstromschutzschalter und einem Wiedereinschaltgerät, wobei Teile des Wiedereinschaltgeräts detaillierter dargestellt sind;
• 2 eine Anordnung aus einem Fehlerstromschutzschalter und einem Wiedereinschaltgerät;
• 3 ein Teil eines Gehäuses des Wiedereinschaltgeräts mit dem Schalter;
• 4 der Teil des Gehäuses gemäß 2 weiters mit dem Antrieb;
• 5 der Teil des Gehäuses gemäß 4 im Aufriss mit geschlossenen Kontakten; und
• 6 die Ansicht gemäß 5 mit geöffneten Kontakten.

The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:

• 1 a circuit diagram of an electrical installation environment with a residual current circuit breaker and a reclosing device, wherein parts of the reclosing device are shown in more detail;
• 2 an arrangement of a residual current circuit breaker and a reclosing device;
• 3 a part of a housing of the reclosing device with the switch;
• 4 the part of the housing according to 2 further with the drive;
• 5 the part of the housing according to 4 in elevation with closed contacts; and
• 6 the view according to 5 with open contacts.

The 1 to 6 each show parts of a reclosing device 1 with a gear lever 14 for specifiable controlled mechanical switching on, the reclosure device 1 assigned or coupled to this residual current circuit breaker 2 , which shift lever 14 with a drive 3 of the reclosing device 1 connected, wherein the reclosing device 1 a bypass current path with connection means for bridging a residual current circuit breaker 2 wherein, in the bypass current path at least one switch 4 is arranged, the switch 4 from a control unit of the reclosure device 1 is switchable, and wherein in the bridging path, a fault current detection arrangement is arranged, wherein the switch 4 two spaced fixed contacts 5 and wherein the switch 4 one, as a resilient contact tongue 6 trained, movable switching bridge for the predeterminable conductive connection of the two fixed contacts 5 having.

As a result, a reclosing device 1 with a very small housing volume or a small size can be achieved. Thereby can the required by relevant regulations in this area at least 4 mm contact spacing can be achieved with a small size. This is not possible with conventional relays at this point. This makes it possible both the switch 4 as well as the start lever 14 to operate with only a common drive 3. The relevant drive 3 , which is usually in the form of an electromagnetic drive 3 is formed, requires the largest part of the device volume. By saving a drive, the volume or the size compared to versions with two separate drives can be significantly reduced.

In the subject device is a device which is provided for a residual current circuit breaker 2 to turn on specifiable. As such switching usually after a successful tripping of the residual current circuit breaker 2 If such devices are customary in the industry as reclosers 1 of course, which of course also a first switching on a residual current circuit breaker 2 with the reclosure device 1 is possible.

The reclosure device 1 is in operation together or next to or adjacent to a residual current device 2 arranged. Residual Current Device 2 have a manual control 15 on, which is also referred to as a handle or lever, and with which the manual on / off of the residual current circuit breaker 2 he follows. The reclosure device 1 has a start lever 14 , which is provided for the residual current circuit breaker 2 to turn on mechanically. This is what the power lever is 14 of the reclosing device 1 in mechanical contact with the hand control 15 the residual current circuit breaker 2 , 2 shows a corresponding arrangement.

The reclosure device 1 has a drive 3 on, which with the start lever 14 connected to operate this. The drive 3 is preferred as an electromagnetic drive 10 , in particular as a solenoid 11 formed, and has a movable plunger 12 on. The pestle 12 is in a conventional manner with an armature of the solenoid drive 10 connected.

The reclosure device 1 has a control unit which shows the individual functions of the reclosing device 1 controls. The control unit is with the electromagnetic drive 10 connected to control this or press.

The reclosure device 1 also has a power supply unit 17 on to the electromagnetic drive 10 and to supply the control unit, which is intended, based on the circuit breaker to be turned on or bridged 2 to be connected on the network side with at least one outer conductor and the neutral conductor.

The reclosure device 1 has a bypass current path. By means of connection means, for example as screw terminals 13 may be formed, the reclosure device 1 both mains side and load side electrically with the residual current circuit breaker 2 be connected to bridge this.

In the bypass current path is at least one switch 4 arranged, which switch 4 from the control unit of the reclosure device 1 is operable. By closing the switch 4 For example, power can be sent to the load-side installation to verify that electrical fault current is still flowing. This is indicated by the reclosure device 1 a fault current detection arrangement, which is arranged at least indirectly in the bridging path or associated with the bridging path. 1 shows a circuit diagram, where a residual current circuit breaker 2 as well as an electrical fault 16 are drawn in the load-side network section, as well as the bridging by the reclosure device 1 ,

It is envisaged that the switch 4 two spaced fixed contacts 5 has, and that the switch 4 one, as a resilient contact tongue 6 trained, movable switching bridge for the predeterminable conductive connection of the two fixed contacts 5 having.

The two fixed contacts 5 are preferred on a circuit board 9 of the reclosing device 1 arranged, with the two fixed contacts 5 especially as contact pins 8th are formed. As a result, a simple and cost-effective implementation or production is possible.

The resilient contact tongue 6 is preferably formed as a metallic leaf spring. It is particularly provided that the contact tongue 6 on a housing 7 of the reclosing device 1 is arranged. In particular, it is provided that the contact tongue 6 directly on the housing 7 or a housing projection is mounted, wherein preferably one end of the contact tongue 6 is firmly clamped.

The resilient contact tongue 6 is so in the case 7 or relative to the fixed contacts 5 arranged that the spring force of the contact tongue 6 in the direction of the fixed contacts 5 acts, and so the contact tongue 6 strives to be in contact with the permanent contacts 5 to step.

The moving pestle 12 of the electromagnetic drive 10 , which is already provided for the shift lever 14 is to be further actuated, and accordingly in the reclosing device 1 also arranged the resilient contact tongue 6 to press.

The electromagnetic drive 10 is preferably designed such that the plunger 12 in the current-free state of the electromagnetic drive 10 the contact tongue 6 against the case 7 suppressed. This will in the state in which the reclosure device 1 is inactive, even the switch 4 kept open and the bypass current path is interrupted or open.

It is preferably provided that after a first movement path of the plunger 12 from a rest position, which rest position in particular by the de-energized state of the solenoid drive 10 is determined, only the switch 4 is closed, and that after a, following the first movement distance, the second moving distance, the switch lever 14 is moved. The 4 and 6 show the de-energized state, the plunger 12 essentially abuts an inner housing wall, and thereby the contact tongue 6 against the case 7 suppressed. Low power will cause the plunger 12 only so far moved or in the electromagnetic drive 10 fed that tongue 6 the fixed contacts 5 connects or short circuits. This condition is also easy to detect by just this contact closure. 5 shows this condition. By keeping the current constant at this point, the plunger can 12 be held in this position. By increasing the power supply can be achieved that the plunger 12 further away from the housing wall, the position of the contact tongue 6 adjacent to the fixed contacts it remains unaffected. With sufficiently high current at the electromagnetic drive 10 this actuates the gear lever 14 ,

For the mechanical operation of a residual current circuit breaker 2 by means of an actual reclosure device 1 is provided the switch 4 by means of the electromagnetic drive 10 to close, where as stated above, only the switch 4 is closed, but not the shift lever 14 is moved, including the electromagnetic drive 10 held in this position. By means of the fault current detection arrangement it is determined whether a fault current in the, the residual current circuit breaker 2 downstream electrical installation prevails. This can be done in a relatively short time of about 1 s.

Upon detection of a fault current, the switch 4 reopened by passing the current through the electromagnetic drive 10 is switched off. There is also no actuation of the activation lever 14 ,

If no fault current is detected, the electromagnetic drive 10 for further movement of the activation lever 14 controlled by the current through the solenoid drive 10 is specifially increased, so being the residual current circuit breaker 2 through the gear lever 14 is turned on.

All described control or regulating operations are preferred by the control unit of the reclosure device 1 carried out. The reclosing device 1 further preferably has a communication interface, which is connected to the control unit, and in the 1 to 4 not shown.

Claims (8)

Reclosing device (1) with a switch-on lever (14) for specifiable controlled mechanical switching on, the reclosure device (1) associated with residual current circuit breaker (2) which Einschalthebel (14) to a drive (3) of the reclosure device (1) is connected, wherein the reclosure device (1) has a bypass current path with connection means for bridging a residual current circuit breaker (2), wherein in the bypass current path at least one switch (4) is arranged, wherein the switch (4) by a control unit of the reclosure device (1) is switchable, and wherein in the Bridging gap a fault current detection arrangement is arranged, characterized in that the switch (4) has two spaced stationary contacts (5), and that the switch (4), as a resilient contact tongue (6) formed, movable switching bridge for the predetermined conductive connection of the two fixed contacts ( 5). Recloser (1) after Claim 1 , characterized in that the contact tongue (6), in particular directly, mounted on a housing (7) of the reclosing device (1), in particular firmly clamped, is. Recloser (1) after Claim 1 or 2 , characterized in that the two fixed contacts (5), in particular formed as contact pins (8), on a circuit board (9) of the reclosing device (1) are arranged. Reclosing device (1) according to one of Claims 1 to 3 , characterized in that a spring force of the contact tongue (6) acts on the fixed contacts (5). Reclosing device (1) according to one of Claims 1 to 4 Characterized in that the drive (3) is designed as a solenoid actuator (10), in particular a lifting magnet (11), and that a movable plunger (12) of the solenoid actuator (10) actuates the resilient contact tongue (6). Recloser (1) after Claim 5 , Characterized in that is closed by a first moving distance of the plunger (12) from a rest position, only the switch (4) and is moved that after one, the first moving distance following the second movement range, the switching-on lever (14). Recloser (1) after Claim 5 or 6 , characterized in that the plunger (12) in the current-free state of the solenoid drive (10) presses the contact tongue (6) against the housing (7). Method for the mechanical actuation of a residual current circuit breaker (2) by means of a reclosing device (1) according to Claim 6 or 7 in which the switch (4) is closed by means of the electromagnetic drive (10) and the electromagnetic drive (10) is held in this position, whereby the fault current detection arrangement determines whether a fault current prevails in an electrical installation connected downstream of the residual current circuit breaker (2), wherein upon detection of a fault current, the switch (4) is opened again, and wherein - if no fault current is detected - the solenoid drive (10) for further movement of the Einschalthebels (14) is driven, and so the residual current circuit breaker (2) by the Einschalthebel ( 14) is turned on.

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