DE1178142B - Installation self-switch with electromagnetic and thermal release as well as with manual switch-off in connection with a fault protection release - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Boarding school Class: H02d

Number: Case number:
Registration date:
Display day:

German class: 21c-68/01

B 61591 VIIIb / 21 c

March 9, 1961

17th September 1964

The invention relates to an installation circuit breaker with electromagnetic and thermal Triggering as well as manual shutdown in connection with a fault protection triggering in which the Bridging contacts are held in the switched-on state by a latching switch lock.

In a known self-installation switch of this type, the switch lock is used to unlatch it two electromagnetic systems provided at a distance from each other. This construction is very complex and takes up a lot of space. When constructing such installation circuit breakers with fault protection tripping on switchboards, however, space must be saved.

The invention consists in that the separately responsive to line overload and fault currents electromagnetic trip members combined into a single electromagnet are, when excited in overload and / or in the event of a fault, one and the same unlocking mechanism operated v / ird. The excitation windings for the overload and for the Fault protection release arranged concentrically in the yoke of the electromagnet. One of the two excitation windings to be influenced hinged armature of the electromagnet can directly with the Be coupled to the unlocking mechanism of the switch lock.

The armature of the electromagnet specially influenced by the excitation winding in the event of overload is advantageously designed as a drop anchor arranged in the interior of the yoke, the against the shoulder of a longitudinally displaceable inside the yoke and with the unlocking mechanism coupled anchor bolt acts, this anchor bolt independently of this by a further hinged armature of the electromagnet in Dependency of an excitation of the winding is actuated in the event of a fault.

Finally, a thermal release mechanism with the same unlocking mechanism as that of both excitation windings to be influenced or that of the specific excitation windings knock-in anchors and hinged anchors that are to be influenced separately must be coupled.

The advantage of this structure is recognizable in the fact that such a circuit breaker is built very small and can therefore be built into the individual circuits of the line system in large numbers. Even if this makes the individual miniature circuit breaker a little more expensive than an installation circuit breaker, it still remains - for the overall installation circuit breaker with electromagnetic and thermal tripping as well
with manual switch-off in connection with a
Fault protection release

Applicant:

Busch-Jaeger Dürener Metallwerke
Aktiengesellschaft, Lüdenscheid (Westphalia)

Named as inventor:

Wolfgang Fuchs, Lüdenscheid (Westphalia)

location considered - the total cost price received about what in view of the functional expansion error protection is important.

In the drawing, the subject matter of the invention is explained in more detail using exemplary embodiments:

F i g. 1 shows the circuit diagram of a circuit breaker with line protection and fault voltage protection device,

F i g. 2 the circuit diagram of a circuit breaker with line protection and residual current device and,

F i g. 3 and 4 also schematically illustrated practical embodiments according to FIG. 1 or 2.

In the circuit diagram for the circuit breaker with line protection and fault voltage protection device (Fig. 1), the switching mechanism 1 is mechanically connected to the magnetic release 2 for the fault voltage on the one hand and to the magnetic release 4 for the line protection on the other hand and the thermal release 5. The releases 4 and 5 are in the line 6, which leads from one switch contact P via the line 6 ″ to the power consumer 12. From the same contact P another line 9 leads via a test button 10 and a resistor 11 to the magnetic release The consumer 12 is also connected to the electromagnetic release 2 of the error voltage circuit by a line 13, while a line 14 is led to earth from the release 2. The consumer is therefore indirectly earthed occurs or if a dangerous fault current flows to earth, the electromagnetic triggering devices 4 or 5 respond, and the switch-off of the

409 687/290

Circuit breaker by unlatching the key switch 1.

In the circuit diagram for the circuit breaker with line protection device and residual current device according to FIG. 2, the structure is essentially the same, only here the line 6 leads over the triggering elements 4, 5 and via the primary coil 3 ″ of a summation current transformer 3 to the consumer 12 and the line 7 via the primary coil 3 ″ of the converter 3 to the consumer 12. A line 8 runs from the electromagnetic fault current release device 2 via the secondary coil 3 ″ of the converter 3. The consumer 12 is grounded directly through line 14 here.

In the practical embodiment of the circuit breaker with line protection and fault voltage protection device (Fig. 3), the electromagnetic triggering elements of the line and fault protection circuit are combined into one organ, ie a yoke 4 ° takes two concentrically arranged coils 4 ^C , 2 ^C , between which another, e.g. B. cylindrical iron wall 2 " . In the core 4 ^{b of} the yoke 4" an anchor bolt 4 ^f made of non-magnetic material is arranged longitudinally displaceably, which has a shoulder 4 ^g and continues behind this shoulder with a smaller diameter. The armature 4 "" is housed in the interior of the inner coil 2 ^C and designed as a strike armature which, when the outer coil 4 ^{C is} excited, strikes the shoulder 4 ^{A of} the bolt 4 'and moves it against the release lever t ^g , V. For the inner coil 2 ^C is also connected to the one end wall around the fulcrum 2 ^C pivotally a hinged armature 2 ^e attached here so that he also the pin 4 'adjusted if it is attracted due to the excitation of the coil 2 ^C by the yoke wall 2 " This version can also be used for circuit breakers with line protection and residual current devices if the excitation of coil 2 ^C is controlled by a converter.

In the practical version of the circuit breaker with line protection and residual current device (Fig. 4), the structure is different insofar as the two concentric coils 2 ^e , 4 ^{C are carried} by a yoke with a central core 4 ″ , with a common, A hinged armature 2 ^e , 2 ^{f designed} as a double lever movable around a fulcrum 2 ^{d is} provided. Here, regardless of whether the coil 2 ^C or 4 ^{C is} excited, the same hinged armature actuates the release lever 1 ", V. Although this version is used to detect the Fault current is equipped with a converter 3, the same design can also be used when the switch is used as a fault voltage switch

Claims (5)

Patent claims: 1. Installation circuit breakers with electromagnetic and thermal tripping as well with manual switch-off in connection with a fault protection release, in which the bridging contacts be held by a latching switch lock in the switched-on state, characterized in that the Electromagnetic responding separately to line overload and fault currents Trigger members (4 and 2) are combined into a single electromagnet, at whose excitation is actuated in the event of an overload and / or in the event of a fault, one and the same unlocking mechanism. 2. Automatic installation switch according to claim 1, characterized in that the excitation windings (4 ^f and 2 ') for the overload and for the fault protection release are arranged concentrically in the yoke of the electromagnet. 3. Installation switch according to claim 1 and 2, characterized in that one of the two excitation windings (4 ^r and 2 <") to be influenced hinged armature (2 ^rf or 2 ^e , T) of the electromagnet is directly coupled to the unlocking mechanism of the switch lock. 4. Self-installation switch according to claim 1 and 2, characterized in that the ^{armature of the electromagnet, which is influenced by the excitation winding (4 f} ) in the event of overload, is designed as an impact armature (4 ^f ) arranged in the interior of the yoke, which presses against the shoulder (4 ^g ) an anchor bolt (40) arranged in the interior of the yoke so as to be longitudinally displaceable and coupled to the unlocking mechanism, this anchor bolt (4 ') acting independently of this by a further hinged armature of the electromagnet (2 ^e ) depending on an excitation of the winding (2 ^f ) in the event of a fault is operated (Fig. 3). 5. Automatic installation switch according to claim 1, 3 and 4, characterized in that a thermal release element (5) with the same unlocking mechanism as that of the two excitation windings (4 ^C and 2 ') to be influenced hinged armature (2 ^d , 2 ^e , 20 or _{the impact armature (4 f} ) and hinged armature (2 ,,), which are to be influenced separately by the specific excitation windings, is coupled. Documents considered: German Auslegeschrift No. 1 022 298; Austrian Patent No. 166 860; List Sl »motor protection switch« from Schrade, is directed. Issued November 1959. 1 sheet of drawings «9 687/290 9.64 Q Bundesdruckerei Berlin