DE1884965U - MAGNETIC RELAY. - Google Patents

Description

The invention relates to a relay with a permanent magnet which provides a holding force flux for attracting the armature in the rest position of the relay, which reduces to energize the relay of the holding force flow _r after which the anchor falls under the influence of a pull-off "

Magnetic relays of this type are known and are for example Used in fault current circuit breakers or in flame monitoring devices for gas or oil firing. The one when you get excited movement of the armature occurring in the relay can be used to control any device »The development of this

26., 9.62 / JO / cw

r / r

9 7 \ 2> Ö5 Π

can, especially with highly sensitive relays, for a rational Manufacturing can hardly be reduced significantly. This means that the excitation power is only at the expense of the Available mechanical energy can be reduced, 9/26/62 / JO / cw, /.

21g, 4/01. 1SS4 965. Landis G. Gyr

_ Ο _ Λ-C ··. Zug (Switzerland); Vcrtr .: Dr -Ing. Λ.

i> chulze, Pai.-Anw., Berlin. | M.iRnetisdu-s relay. 26. P. 63. L 55 269.Switzerland P. 10. 62. 11523/62. (T. 26; line 2)

Trip relays are aimed at increasing their sensitivity and reducing their space requirements and their manufacturing costs. In particular The ever-increasing use of electrical devices in the home, in industry and in agriculture and forces in construction and assembly work to such a development, to humans and animals when touching live parts to protect. j

If you want to increase the response sensitivity of magnetic relays with electrical excitation, then this requires a reduction in the required excitation power. From theoretical considerations it now follows that the tear-off force P. of the armature, i.e. the force with which the armature is torn off after the relay is excited , and the excitation power P _ß that must be applied to keep the magnetic attraction below the | To let the tear-off force decrease, stand in a fixed ratio,

^P A

This ratio ^ is dependent on c from the present in the rest position of the relay air gap between the armature and the i hn attracting pole ends, the desired ratio £ of Erregerzu holding force flow and in case of alternating current excitation of the frequency in the ratio ^ incoming large S and S.

21g, 4, 'Ol. 1SS4 965. Landis &. . Gyr AC, Zug (pig); Vcrtr .: Dr.-Ing. Λ. Schulrc, Pat.-Amv., Berlin. I Magnetic relay. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11523/62. (T. 26; line 2)

The mechanical energy is, however, from the trigger mechanism of the The switching devices to be controlled are determined and can therefore not be reduced at will. Small excitation power with a large one to be delivered mechanical energy thus represent contradicting requirements that the known relays in their sensitivity It is true that with DC excitation da3

P.
Ratio ~ additionally from the air gap area through which

* B.

the flow of holding force for the armature passes through, the number of turns the field winding and its specific resistance. Since the trip relays mostly with other switching devices are assembled, which generally leave little space for installation, also exist in relays with direct current excitation the conflicting requirements listed above.

It is now known in a residual current circuit breaker with differential current tripping between a differential transformer and a differential relay, the armature of which is the trigger mechanism of the protective switch operated, an electronic To use an amplifier that has to generate the required excitation power. However, such a solution is costly and has the further disadvantage that the amplifier is fed from the same network and therefore in the event of a network fault fails. If the grid failure is caused by a neutral break, when touching the phase conductor there would be no protection 26.9.62 / JO / cw, /.

27. te

eSc. 52m.

- 4th

21g, 4/01. ISS4 965. Landis Cn. Gyr AC, Zug (Switzerland); Vcrtr .: Dr.-Ing. Λ. Schulde, Pat.-Anw., Berlin. | M.ienetisclies relay. 26. P. 63. L 35 269. Sehwefc P. 10. 62. 11S23 / 62. (T. 26; '/ .. 2)

more available. To avoid this, additional measures would have to be taken be taken to switch off the circuit breaker in such cases, but this would require that the circuit breaker would have to be switched on again manually after each power failure.

It is also known, instead of an externally fed amplifier to use an electrical circuit in which the differential transformer Released energy is stored until there is enough electrical energy to operate the circuit breaker to operate. Although this circuit does not require any external voltage, the tripping time naturally increases with the desired response sensitivity.

The invention aims to avoid the above-mentioned disadvantages To create a highly sensitive relay of the type mentioned at the outset, which is characterized in that at least one Magnetic amplifier arrangement is provided which has an armature through which a force flow flows, which is from the first armature is controlled in such a way that when the first armature drops, the force flow in the second armature is changed in such a way that the second anchor moves into its working position.

The invention is shown schematically with reference to the drawing Embodiments explained in more detail. 9/26/62 / JO / cw, /.

12/27

Corner. -zn. Tri ^ m

21g, 4/01. 1SS4 965. Landis R. Gyr Λ.ϋ., Zug (Switzerland); Vcrtr .: Dr.-Ing. A.

- 5 - Shoes, Pat.-Anw., Berlin. | Matjneti-

^: sches relay. 26. P. 63. L 35 269. Switzerland &. 10. 62. 11S23 / 62. (T. 26; line 2) ff

Show it·.

Pig, 1 "to 3 embodiments with two anchors, the magne- |

table are connected in parallel, of which the |

first when falling a translational movement I

executes, |

Fig. 4 to 7 embodiments with two magnetically parallel J. switched anchors _f of which the first when off |

fall executes a tilting movement, j

8, 9 and 11 further exemplary embodiments with two anchors, by J. which the first a translational movement when falling executes

Pig. 10 a variant of the relay according to FIGS. 9 and

Pig. 12 and 13 two embodiments with two magnetic in Anchors lying in a row, the first of which tilts when falling.

In Fig. 1, 1 denotes a permanent magnet with poles N, S? net, which is arranged between two legs 2, 3 made of magnetically conductive material. The legs 2, 3 have two pole pieces 4, 5, which work together with a first anchor 6. An air gap 10 is provided in the leg 2. The flow of power in that The positive path formed by the legs 2, 3 and a second armature 9 holds the armature 9 on the pole pieces when the relay is in the rest position 9/26/62 / JO / cw ./,

Known according to

2Ig ₁ 4 / ΟΙ. 1SS4 965. Landis R. Gyr
AG, Zug (Switzerland); Vcrtr .: Dr.-Ing. A.
Schulze, Pat.-Anw., BcrÜn. | Magnetic relay. 26. P. 63. L 35 269. Switzerland ,, - 6 - f>. 10. 62. U S23 / 62. (T. 26; 2. 2) Ej

It 8 tightened, against the action of a spring 11, between the J

Legs 2, 3, a shunt 12 is arranged in which two f

Air gaps 13, 14 are provided. The shunt 12 has |

a pole end 15 or 16 on both sides of the air gap 14, at J

which in the rest position of the relay, the first armature 6 against the. f

Effect of a spring 17 is applied. The two of the air gaps J

The magnetic resistances formed by 13f H give, as it were, | a magnetic voltage divider from which a partial magnetic voltage is tapped to attract the armature 6. The J

Armature 6 is located in an exciter flow path that results from the shunt |

1 12, the air gap 14, the pole ends 15, 16 and the armature 6 exists . An excitation winding 18 is provided in this excitation flow path, for example on the pole end 15 / as shown in FIG is shown. The power flow 19 is distributed in the rest position | of the relay to the shunt 12, the first armature 6 and the J second armature 9. These partial flows are one after the other with 20,
21 and 22 designated. If now the field winding 18 of a
When current flows through it, 15, 6, 16, 14 | arises in the path of excitation
12 with a certain current direction z, B, the excitation flow indicated by 23. This only has to weaken the partial flux 21 given by the voltage divider ratio. With a certain
Amperage decreases the magnetic holding force for the armature 6
under the tensile force of the spring 17. The armature 6 falls accordingly
and rests against the pole pieces 4, 5 "as shown in FIG. 1
is shown in dashed lines. The power flow 22 in the flow path 2,9,3
9/26/62 / JO / cw ./.

17.03 ^Γ

Bek. Σΐο. 2-Η. Ο ^ ζ.Ίβυβ — j

21g, 4/01. 1SS4 965. Landis G. Gyr

- 7 - ^Λ ^ ^ 2ug (Switzerland); Rep .: Dr.-lng. Λ.

Shoes, Pit.-Anw., Berlin ^ | M.ieneti sclies relay. 26. P. 63. L 35 269. Schweb, &. 10. 62. 11S23 / 62. (T. 26; A. 2) s

If the two armatures 6 and 9 now branch out, since the magnetic resistance of the air gap 10 is large compared to the other magnetic resistances present in the flux path 2, 9, 3 , the force flux 22 is thus to a certain extent impressed, the plus density in the armature 9 drops to such an extent that under the action - \ the spring 11 is pulled off the pole shoes 7, 8 and in the ar- ·. contribution is moved. By ensuring through the magnetic voltage % division and appropriate dimensioning that the \

Ratio of the square 'of the useful flux to the air gap cross |

section of the second anchor 9 is larger than that of the first anchor \

6, a greater mechanical energy |

gie can be removed than is the case with the first anchor. It h

there is thus a magnetic energy amplification with which it |

is now possible, the stage with the first anchor 6 for the ΐ

desired low excitation power and, independently of this, the f

Step with the second anchor 9 for the required mechanical 1

To interpret energy. The natural link J mentioned at the beginning

of these two large ones in the known relays is therefore in the 1 described relay solved. When executing after the Pig, 2

is the tensile force of springs 11 and 17 by magnetic pull

puts. A second shunt is provided for this purpose, j

of the legs 24, 25 | arranged on the legs 2, 3 exists, each of which has a pole piece? 5 or 27; For the mag- | Netic attraction of the first anchor 6 does not need any special 1

Precautions to be taken. With suitable dimensioning ^, f 26; 9.62 / J0 / cw ./.1

Known - so.

21g, 4/01. 18S4 965. Landis 6 .. Gyr AG., Zug (Switzerland); Vcrtr .: Dr.-Ing. Ä. Schulrc, Pat.-Anw., Berlin. | M.icnetisdies Relay. 26. P. 63. L 35 269. Schweb P. 10. 62. 11 S23 / 62. (T. 26; 2. 2)

the looking force of the already existing pole pieces 4, 5 is used will. The structure and mode of operation of this relay correspond completely to that of the one shown in FIG Exemplary embodiment. The advantage of the magnetic pull over the spring balancer is that it results in a lower excitation power Bg. The latter is namely, as already mentioned at the beginning, determined by the tear-off force F ^, which in the rest position on the Anchor is exercised. This tear-off force is now the same mechanical energy, thanks to the steeply increasing force-displacement diagram s with magnetic attraction, smaller than it with a spring is the case. In Fig. 3, an embodiment is shown in which the first anchor by a flexible Leaf spring 6 is formed. The leaf spring 6 is fastened with its lower end in the leg 3 and hugs itself in the rest position of the relay, with its upper end on the beveled pole end 15, which carries the excitation winding 18 «When energized the leaf spring 6 falls off at its free end and rests against the beveled pole piece 4. This could affect both of the pole piece 4 itself as well as by prestressing the leaf spring 6. As with the relay according to FIG. 1 the flux density in the armature 9 becomes smaller, so that the latter is torn by the spring 11;

It is clear that not only the leaf spring 6, but also the armature 9 could be under magnetic tension. The spring 11 falls 9/26/62 / JO / cw ../.

27. U. oo

2Ig, 4, 'Oi. ISSi 965. Landis 6.. Gyr A.C., Zug (Switzerland); Vcrtr .: Dr.-lng. Λ.

_ Q _ Schulze, Pat.-Anw., Berlin. I Magneii-

^y sthis relay. 26. P. 63. L 35 269. Switzerland

P. 10. 62. 11. S23 / 62. (T. 26; line 2)

onwards, as is the case with the embodiment according to FIG.

If, in the embodiments discussed above, the armature 6 executes a translational movement when it falls, in the following four Embodiments he performs a tilting movement.

In Fig. 4, the permanent magnet is denoted by 1, the north of which and the south pole are indicated by N and S, respectively. The poles N, S are via air gaps 28, 29 with legs 2, 3 made of magnetically conductive Material connected. The legs 2, 3 each have a support for a tilting anchor 6. The support of the leg 3 is made from a pole piece 4, the support of the leg 2 from two pole ends 15, 16, between these on the leg 2 is an excitation winding 18 scheduled. The legs 2, 3 have a pole piece 7 or 8 at their lower end, on which in rest position J ment of the relay a second armature 9, contrary to the effect of a

Spring 11, is kept tightened. The power flow from the permanent magnet 1 is distributed on the one hand on the way over the anchor 6, on the other hand on the anchor 9. The two partial flows are with the i Lines of force 21 and 22 respectively indicated. The power flow 21 flows through I the pole ends 15, 16 each half and closes its way over | an air gap, the pole piece 4 and the leg 3. In the illustrated In the rest position of the relay, the toggle armature 6 is held at the pole ends 15, 16 as a result of the force flow 21. Runs the Excitation winding 18 current, the power flow 21 is depending on the

current direction of current in the lower or upper pole end 26.9.62 / JO / cw, /.

- 10 -

2U2.W

Β <"· 'k ■" * 21Τ5. 2 ~ '^; : 'tSi

2Ig ₁ ^ 4/01. 1SS4 965. Landis R. Gyr Λ.Ο., Zug (Switzerland); Verver .: Dr.-lng. A. Schulde, Pat. Appl. Berlin. | M.ignetisdies Kclais. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11523/62. (T. 26; line 2)

15 OO.HV 16 weakened by the excitation flux, which finds only a low magnetic resistance on its separate path. The toggle armature 6 drops on this side and is drawn towards the pole piece 4. The excitation flow is indicated by 23 in FIG. 4 for a specific current direction. The flow of force in the pole end 16 is increased and in the pole end 15 is weakened. The upper end of the tilting armature 6 therefore drops off and rests against the pole piece 4. The tilting anchor is shown in dashed lines in this position. In the opposite direction of current, the lower end of the tilting armature 6 drops. Since the sum of the magnetic resistances of the air gaps 28 and 29 is large compared to the other magnetic resistances encountered by the total flux of the permanent magnet 1, this total flux changes only relatively little when the tilting armature 6 falls. Because the magnetic resistance of the positive path 2, 6, 4 has become smaller when the tilting armature has fallen, the force flow 21 will have become greater and the force flow 22 will have become smaller. As a result, the force of the spring 11 now predominates, so that the armature 9 falls off. Instead of a single pole piece 4, two pole pieces could also be provided, against which only one specific side of the armature is then applied. In the construction of the relay according to FIG. 5, a window 31 is provided in the pole end 15 through which the field winding 18 is threaded. The relay works on the principle of the so-called blocking magnet. When excited, saturation occurs

one of the webs 32 or 33, according to which the power flow from the 26,9.62 / JO / cw ./.

Corner. ς «πχ Trir ^

21g, 4/01. 1SS4 965. Landis 6.. Gyr

- 11 - £ .G., Zug (Switzerland); Vcrtr .: Dr.-lng. Λ.

Shoes, Pat.-Anw., Berlin. | Macneti · sdics relay. 26. S. 63. L 35 269. Switzerland *>. 10. 62. 11 $ 23/62. (T. 26; '/ .. 2)

Pole end 15 is displaced so that the tilting anchor is at this end falls off. Both in the embodiment according to FIG. 5 and in the one According to Pig, 4 the relay responds regardless of the direction of the current. In the embodiment according to FIG. 5, however, the | Tilt anchor 6 always starts with the same end, which under certain circumstances | gives a constructive advantage, |

The embodiment according to Fig. 6 shows a different design of the \

Relay according to Fig. 4, in which two leaf springs 6 \

are provided, of which only one is visible in FIG. 4, <

One leaf spring is at the pole end 15, the other at the pole end 16.

attached. Depending on the direction of current in the field winding 18 \

\ one or the other leaf spring 6 falls off at its free end '

and lies against the pole piece 4, which has beveled edges 34 _t ] 35 for this purpose. The mode of operation corresponds to that of the relay! According to FIG. 4, "If the leaf spring 6 is only to fall off at the same end, a blocking winding 18 can again be provided, as FIG. 7 shows. Otherwise, this corresponds completely to FIG. 6, so that a more detailed explanation is superfluous. If the two flux paths through the armature 6, 9 with respect to the permanent magnet 1 are connected in parallel to a certain extent, in the two following embodiments of the relay, both flux paths are in series, in the sense that they are wholly or partially from

the same power flow are flowed through. In Fig. 8, the 26.9.62 / JO / cw ./.

Known gam. Z-Jfr ^ iriS

- 12 -

21g, 4/01. 1SS4 965. Landis 6.. Gyr AC. Train (Schwcii); Vcrtr .: Dr.-Ing. Λ. Schulze, Pat.-Anw., Berlin. I Magnetic relay. 26. P. 63. L 35 269. Switzerland, .. P. 10. 62. 11 S23 / 62. (T. 26; '/ .. 2) ψ

Permanent magnet labeled 1. It is arranged between the legs 2, 3, in which air gaps 10 and 36 are provided. The leg 3 has a pole end 15 or 16 on both sides of the air gap 36, which poles keep the first armature 6 attracted in the rest position of the relay. The pole end 15 carries an excitation winding 18. Two pole pieces Y, 8, which keep a second anchor S attracted, and two pole pieces 4, 5 are also provided on the legs On 2, 3. The an'ter 6, 9 are under the tension of a spring 17 and 11, respectively. If the external winding 18 carries current, the flow of force in the armature 6 is weakened with a certain current direction. The latter falls off and is pulled by the spring 17 onto the pole pieces 4, 5. As in the embodiments according to FIGS. 1, 2 and 3, this reduces the flow of force through the armature 9, which is torn off under the influence of the spring 11. Instead of a spring 11, the tear-off force for the AnI he 9 can also be supplied by the permanent magnet 1, as has been explained with reference to FIG. Such an embodiment is shown in FIG. 9 _t ″ in which two additional legs 24, 25 are provided, the pole shoes 26 and 27 of which exert a tensile force on the armature 9. Otherwise, their mode of operation corresponds to that of FIG.

It is advantageous to place the two anchors in the relay according to FIG. in the form of a leaf spring, as shown in the embodiment according to FIG. 10. The leaf springs 6 and 9 are with their one side fixedly arranged in the leg 3. A non-mag-26.9.62 / JO / cw ./.

. , 21g, 4, 'Oi. 1SS4 965. Landis G. Cyr

- \ J - AC, Zug (Switzerland); Vcrtr .: Dr.-Ing. Λ.

Schulze, Pat.-Anw., Berlin. | Magnetic relay. 26.!>. 63. L 35 269.Switzerland p. 10. 62. 11523/62. (T. 26; '/ .. 2)'

"Etische insert 36 replaces the air gap 36 in the embodiment according to FIG. 9 * In the rest position of the relay this is free End of the leaf spring 6 at the beveled pole end 15, the free

• 7

The end of the leaf spring 9 nestles against the beveled pole piece. When the relay is energized, the leaf spring 6 drops and lies down to the pole piece 4. The leaf spring 9 falls off and rests against the pole shoe 26. In this working position of the armature 9 is the power flow of the permanent magnet 1 is greater than when it is applied

this anchor on the pole piece is the case. This is due to the fact that the magnetic resistance seen from the permanent magnet 1 is smaller in the former case than in the latter case, in which the force flow is no longer guided over the relatively large magnetic resistance of the air gap 10. The magnetic voltage drop on the non-magnetic insert 36 is therefore also greater in the former case than in the latter due to the greater force flow and can serve to overcome the bending force of the leaf spring 6 and the now relatively low attraction force of the pole piece 4.

This embodiment has the advantage that the first armature 6 ti "automatically returns to its starting position" Another advantage over the embodiment according to FIG Air gap 36 has been omitted at the point shown in FIG. 9.
9/26/62 / JO / cw ./.

EeL ς s »Ti.

- 14 -

21g, 4/01. 1SS4 965. Landis G. - Gyr AG, Zug (Switzerland); Vcrtr .: Dr-Ing. A. Schuh, Pat.-Anw., Berlin. | M.ipnetisdics relay. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11523/62. (T. 26; 7th .. Z)

A further training is shown in Fig. 1.0. Here, the armature 6 is placed on the pole pieces 4, 5 after being excited by the spring 11. The magnetic resistance through which the power flux 22 must be driven is consequently smaller. This results in an increase in the power flux 22, since the driving magnetomotive force remains the same, so that the armature 9 is attracted by the pole pieces I ₁ 8. In the following two more exemplary embodiments are shown in which both armatures, also as in the three latter configurations, are magnetically in series, the first armature 6, however, executes a tilting movement when it falls. In FIG. 11, 1 shows a permanent magnet which is arranged between two legs 2, 3. The leg 2 has, as in the relay according to Figure _# 4, an excitation coil 18 and two pole ends 15, 16 with bevelled edges for supporting the Kippankers 6. A beveled pole piece 4 and two pole shoes 7, 8 are provided on the leg 3. The pole shoes 7 work together with the second armature 9. When the relay is energized, the rocker armature 6 drops out at the end at which the flow of force 21 is weakened by the flow of excitation. The magnetic resistance of the flux path 2, 6, 4, 3 thereby becomes smaller, the flux density in the second armature 9 thus greater, so that the latter is now attracted by the pole pieces 7, 8. It is of course possible to use the principle of the blocking magnet in this design, so that the tilting armature is used

9/26/62 / JO / cw ./,

21g, 4/01. 1SS4 965. I.andis G-. Gyr AG, Zug (Switzerland); Vcrtr .: Dr.-lng. A.

- 15 - Schulze, Pat.-Anw., Berlin. | Mnenei -

sclies Kclais. 26. P. 63. L 35 269. Switzerland P. 10. 62. 11S23 / 62. (T. 26; line 2)

6 always falls on the same EnIe. Such training represents the Fig. 12 shows the blocking winding 18 arranged in the same manner as shown in FIG. Their mode of operation corresponds otherwise to that of the relay according to FIG. 11. A The preferred field of application of the relay described is residual current tripping. The excitation winding is connected to a differential οχ om-traiafibrmator connected to the asymmetrical current flow against earth, for example when touching devices or lines with faulty insulation, supplies an error current. The Shark Power Flow is consequently weakened by the first armature 6 and falls under the influence of the spring and / or magnetic pull away. The second armature 9 then actuates, in a manner not shown, the trigger mechanism of the circuit breaker, which triggers the dangerous Shuts down parts of the network. The resetting of the anchors can be done in any way that shall not be discussed here, take place. Because of the high sensitivity of the relay described, special attention must be paid to the path of the excitation flow. The coercive force of the relevant magnetic material acts | look like an additional variable bias that: depending on the magnetic history of the material results in a smaller or larger response current. Therefore it is preferable a soft magnetic material with a very low coercive force is used for the parts that form this path of excitation flow, see above that a small spread of the response values is achieved. The other river routes are not subject to such high demands. 9/26/62 / JO / cw ./.

- "Ϊ7.12.Κ>

Known --e

- 16

2Ig, 4/01. 1SS4 965. Landts R. Gyr AG, Zug (Schweb); Vcrtr .: Dr.-lng. Λ. Shoes, Pa; .- Anw., Berlin. | Magnetic relay. 26. P. 63. L 35 269. Schweb P. 10. 62. 11 S23 / 62. (T. 26; line 2) |

Siva can therefore consist of cheaper soft magnetic material.

Although the discussed embodiments only have two anchors, several could also be provided, each controlling the flow of force in the following armature, so that a multi-stage reinforcement arises, although it is advantageous to derive the power flow in the second or the following armature from the same permanent magnet, which supplies the holding force flow for the first armature, it can also be from a separate permanent magnet or electromagnetically can be generated »Further can in all embodiments, in which the tear-off force of the anchor is supplied by a spring this force will be replaced by a magnetic attraction force and vice versa. Furthermore, spring and magnetic Tightening force can be combined. Also, all versions with normal excitation windings can be used, insofar as this is not the case has been shown in a variant, be stranded with a blocking winding. The relay can also be energized in a non-electrical manner. For example, with the executions according to FIGS. 1, 2, 3 and 8, 9, 11 for energizing the relay an additional, movably arranged shunt can be provided with which the holding force flow is derived from the first armature 6 so that this anchor falls off. In the embodiments according to FIGS. 4, 5, 6, 7 and 12, 13, a, B, an additional movable arranged permanent magnet are provided to excite

26.9,62 / JO / cw ./.

Bek. Σ-eiTi. Ζ- ^ ϊΐτβ

21g, 4/01. 1SS4 965. Landis G. Gyr AG, 2ug (ScUwcis); Vcrtr .: Dr.-lng. A. Schuh, Pat.-Anw., Berlin. | Magnetic relay. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11S23 / 62. (T. 26; 7 .. 2)

the leg 2 is brought near the pole ends 15, 16 in such a way that the holding force flow 21 in the first armature 6 is weakened at the upper or lower end Location is brought. Only a small amount of force is required for this, since amplification takes place in the relay. However, what all versions have in common is that at least one magnetic amplifier arrangement is provided which has an armature through which a force flow controlled by the first armature flows. This flow of force keeps the second armature attracted in a first position in the rest position of the relay, as is the case with the embodiments according to the Pig. 1 to 9 is the case, or this power flow is too small in the rest position of the relay to pull the second armature out of its rest position, as is the case with the embodiments according to FIGS. 11, 12 and 13.

The great advantage of the invention is that it shows, for the first time, a way of avoiding the sensitivity limit of the known relays are subject to break through. It is therefore possible to get by with pathogen performance that is only a fraction of that which require the most sensitive relays known. This brings about the preferred application discussed above of the relay described for fault current tripping The advantage is that the differential current transformer is also smaller thanks to the low excitation power required ./.

Corner. ™ ίΤ5. 2iFTjäzrtS53 ~ "

21g, 4/01. 1SS4 965. Landis R. Gyr

__ λ Q _- A.tJ., Zug (Switzerland); Representative: -Dr.-Ing. A.

"~" "S.-hulrc, Pat.-Anw., Berlin. | M.igneti-

nice kclais. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11523/62. (T. 26; line 2) i *

with an existing relay a trip at |

To cause smaller »differential currents would mean j

that the differential current transformer is entirely for the J wished to increase the sensitivity f and would therefore have to be designed correspondingly larger. With the |

The very low differential currents aimed for are then obtained |

soon to an intolerable expense for the differential current trans- | formator. This additional effort on the differential current transformer 3-

can be avoided if, as with the relay described, | /

succeeds in making the relay more sensitive. As a further pre-U part way proves the inventive relay in that i \ of the so sensitive for bonding due to fumes, oil mist, dust J; ^;

first anchor can be hermetically sealed to the outside, |

-1 ■ since there is no longer a mechanical operating lever supplied from the outside i <.

needs to be used to operate a trigger mechanism '% [

is. The first armature can then be reset from the outside by means of a permanent magnet. In particular, the designs according to the Pig are suitable for this hermetic seal. 11, 12 and 13, since with these a complete shut-off of the adhesive \ anchor parts can be provided. The housings that provide the shut-off here are indicated by dash-dotted lines. In the other versions, only the first anchor with its immediate surroundings is used, as is the case, for example, in the Pig. 2 is shown in phantom _r or it will, as well as in the Pig.

11, 12 and 13, the whole relay with the exception of the last armature 9/26/62 / JO / cw,. /, ·

2Ig ₁ ^ 4/01. ISSf 965. Landis &. . Gyr AC, Zug (Schwcii); Vcrtr .: Dr.-Ing. A. Schulde, Pai.-Anw., Berlin. I ^Maeneti-: schcs relay. 26. P. 63. L 55 269. Pig 8. 10. 62. 11823/62. (T. 26; line 2)

closed. In the latter case it must be ensured that the part of the housing between the last anchor and the one with it cooperating pole pieces made of very thin material so as not to impair the sensitivity. Also can sticking by using a very thin and flexible plastic insert between the first anchor and the anchor with it cooperating Poles are counteracted. The insert can for example consist of a polyester film, or preferably of a Foil made of polytetrafluoroethylene.

Schutrnprilclie

9/26/62 / JO / cw

Claims (1)

Protection claims. 1 «) Magnetic relay with a permanent magnet, a multi-part, fixed iron core, the parts of which are connected to the poles of the permanent magnet, with a magnetization winding that surrounds part of the fixed iron core and with a movable armature ₉ which, in its rest position, is connected to two poles of the fixed iron core rests, characterized in that ala working anchor, a second, iron "against the main poles of the fixed ^ isenkerns in the sense of an increase or decrease its ^a bstandes of these main poles movable armature (9) is used and in that the first armature as auxiliary armature (6) is movable in relation to an interruption of the iron core in such a way that it forms a magnetically conductive bridge for this interruption, which leads from the path via the permanent magnet (1), the fixed biscuit core and the Ar-Beits anchor (9) or from a secondary path forms a part of this path " Relay according to claim 1, characterized in that two isenschenkel ^ (2,3) de rest with its one end at the poles (H, S) of the permanent magnet (1) and at their other end each have a main pole _(t 7 8) and form an auxiliary pole (4 »5), of which the main poles _{face the φ} working armature (9), and that the two iron legs (2,3) are connected by an iron yoke (12) interrupted by an air gap (14), the 2o) 2ig, 4. ¹ OI. 1SS4 965. Landis G. Gyr A.il, Zug (ScWwc · :); Vcrtr .: Dr -Ing. Λ. Schulic, ['.it-Anw., Berlin. | M.ignctisdies Kclais. 26. P. 63. L 35 269.Switzerland 2 ~ P. 10. 62. IJ M23 / 62. (T. 26; line 2) Case Ί288 LG (still claim 2) has poles (15, 16) on both sides of the air gap (14), one of which is demagnetization (18) and which face the auxiliary anchor (6) in such a way that that the latter, seen in terms of its mobility, Awischen these poles (15,16) and the auxiliary poles (4,5) 3) relay according to claim 2, characterized in that the iron legs (2) 'between AEM yoke (12) and the main pole (7) and the auxiliary pole (4) transmitting end is interrupted by an air gap (10) ₀ 4D) Magnetic relay according to claim 2 or 3, characterized in that iron branch pieces {24,25) are attached to the egg limbs (2,3) in the vicinity of the connection of the yoke (12), which in pole (26 , 27) end facing the main poles (7 _and 8) in such a way that the working armature (9), viewed in the direction of its mobility, is between the main poles (7, 8) and the poles (26 "27) of the branch pieces (24, 25) lies ». 5d) Magnetic relay according to claim 2, 3 or 4, characterized in that the auxiliary armature (6) is pivotably attached to one leg (3), that only the other M leg (2) has a pronounced auxiliary pole (4) and that on the yoke (12) only; in the demagnetization = winding (18) carrying pole (15) is provided, v / obei. the pivotable end of the auxiliary anchor (6), seen in the direction of its mobility, was between the auxiliary pole (4) and the yoke pole (15) i CA ν Corner. 21g, 4Ό1. I5S4 965. I.andis Cx. Gyr AC, Zug (Switzerland); Vcrtr .: Dr-! Ng. Λ. Schulie, Pv-Anw., Berlin. J iM.iRneiisdies Kclais. 26. S. 63. L 35 269. Sweat: p. 10. 62. 11 S23 / 62. (T. 26; V. 2) "Pali 1288 LG 6.) Magnetic relay according to claim 1, characterized in that two; each on a pole face (S, S) of the permanent magnet (1) adjacent iron screwdriver (2,3) end on the one hand in main poles (7,8) which face the working anchor (9), while the other end of one of the Schickels (2) has two pole projections (15, 16) facing the other leg (3) at different distances from the permanent magnet (1), which has a corresponding pole projecting approximately in their middle (4) on the other leg (3) opposite, whereby the demagnetization winding (18) den - ^ isen.vsg between the point of attachment of the projection (16) lying closer to the permanent magnet on the first leg (2) and the end of the second Polvor jump (15) of this leg includes wholly or partially and the auxiliary anchor (6) pivotally attached to the end of the first-mentioned pole projection (16) and is dimensioned so that it is also in its one limit position on the second pole projection (15) of the same leg (2) to be in the other boundary division, however _, rests on the pole projection (4) of the other leg ^ 3) * 7t) Magnetic relay according to claim 1, characterized in that two iron legs each with their one end on the poles (N, S) of the permanent magnet (1 ^ abutting one main pole (7, 8) and an auxiliary pole (4 , 5), of which the main poles (7, 8) the working armature (9) _f the auxiliary _{poles (4 t} 5) face the auxiliary armature (6), and that on both sides of an air gap (36 ) are attached to the same leg (3) pole projections (15,16) » 27, U. o ^ 21g, 4 ¹ Ol. 1SS4 565. I.andis R. Gyr AG., Zug (Switzerland); Lecturer: Dr.-Ing. Λ. Shoes, i'al .- / \ n \ v., Berlin. | M.npnetisdics Kclais. 26. ■>. 63. L 35 269. Sweat; P. 10. 62. 11.S25 / 62. (T. 26; '/ .. 2) i-'i Claim 7) of which the pole closer to the permanent magnet (1) = projection ("55) the demagnetization winding (18) carries, and which have such a position, 4ass them in ^ er extension of the auxiliary poles (4, 5) from the opposite one See how these auxiliary poles (4,5) face the auxiliary armature (6). 8.) Magnetic relay according to Anapmch 7, characterized in that the one. Leg (2) is interrupted by an air gap (10) in the part common to its main duty auxiliary pole (7 or 4) and that both on this common part, measured from the permanent magnet (1), in front of the AiUftspaxt ( 10) as well as on the other leg in the saw of its main · = - and auxiliary pole ^ fimm ⁽ 8b-r 5 ^ iron branches are attached, which end in the poles (26,27), which the working anchor (9) of face on the opposite side as the main poles (7,8). 9e) Magnetic relay according to claim 1, characterized in that on the pole faces (S, S) of the permanent magnet (1) two iron legs (2,3) rest, of which the ^: one Leg (3) on the permanent magnet (1) facing away ■ j side of a disruptive air gap (36) the \ auxiliary anchor (6) and the main anchor (9), both pan ■ j as an anchor formed, carries it dal further the both at; ker (6,9) carrying legs £ 3) on the other side of the air gap (36) carries a pole projection (15) enclosed by the demagnetizing winding (18), while on the other leg (2) which opens into a pole end (26) with the interposition of an air gap (10) -5 = : i 2Ig, 4Ό1. 1SS4 965. Landis G. Gyr Λ.ύ., Zug (Switzerland); Yertr .: Dr.-lng. Λ. Schulze, f'.ii -Anw., Berlin. | M.ipneti- I Schcs Kclais. 26. S. 63. L 35 269. Switzerland j P. 10. 62. II -S23 / 62. (T. 26; line 2) '^ j_ ^. ■■ Pail 1288 LG (still claim 9) the main pole (7) opposite the pole end (26) and an auxiliary pole opposite the pole projection (15) of the first leg (3) are connected, the pivotable end of the auxiliary armature (6) between the pole projection (15) and the auxiliary pole (4 ), the pivotable end of the main armature (9) between the main pole (7) and the pole end (26), in such a way that it _r in the rest position on the pole projection (15) or on the main pole (7) the working position on the auxiliary pole (4) or on the pole end (26) 10o) Magnetic relay according to claim 1, characterized in that that two iron legs (2,3), each with one end on the poles (N, S) of the permanent magnet (1), together so arranged with an iron intermediate piece (4, 8) separated from each of the two legs by a space are that the free end (7) of one leg (2) with the adjacent free end (8) of the intermediate piece the main pole opposite the working anchor (9), the free end (5) of the other leg (3) with the adjacent one (4) of the intermediate piece of the auxiliary anchor (6) form opposing auxiliary poles, and that the two Legs (2,3) are connected by an iron yoke (12) interrupted by an air gap, on both sides of the air gap has poles (16,15), one of which carries the demagnetization winding (18) and which the Auxiliary anchor (8) on the opposite side as the Auxiliary poles (4,5) are opposite, -6- 21g, 4Ό1. 1SS4 965. Landis P. Gyr AG, Zug (Switzerland); Left to right: Dr-Ing. Λ. Schulde, Pat.-Anw., Berlin. | Magnetic relay. 26. P. 63. L 35 269.Switzerland P. 10. 62. 11 525/62. (T. 26; line 2} ^: Case 1288 LG 11.) Magnetic relay according to claim 1, characterized in that two ^ isenschenkel (2,3), each with one end on the poles (H, S) of the permanent magnet (1), together with one of both legs by an iron intermediate piece (4 _f 8) separated by an intermediate space in each case are arranged in such a way that the free end (7) of one leg (5) with the adjacent »free end (8) of the intermediate piece supports the working anchor (9 ) forms opposing main poles, while the other free end (4) forms the intermediate piece an auxiliary pole, which protrudes two pole projections (15 bawo 16) attached to the end of the other leg (2) and some distance therefrom on the same leg (2) facing approximately in the middle, the de-magnetization winding (18) encompassing the Bisenweg between the point of attachment of the pole projection (16) closer to the permanent magnet (T) and the end of the second pole projection (15) completely or to the extent of the Jeil and the auxiliary armature (6 ) at the other end of the first-mentioned Polvor jump (16) is pivotally attached and is dimensioned so that it rests with its free end on the second pole projection (15) in its one limit position, but on the auxiliary pole (4) in its other limit position * -7- \ Eck. ς ^. r ^ rrrrr 21g, 4/01. I SS4 965. I.andis £. Gyr A.C., Zug (Switzerland); Yertr .: Dr-Ing. Λ. Schulze, Pai -Λη \ ν., Berlin. | M.ipneti- rope Kclais. 26. S. 6). L 35 269. Schsvci: ! P. 10. 62. 11S23. '«. (T. 26; line 2) ' Pail 1288 eat 12) relay according to claim 6 or 11, characterized in _f that has projection of the permanent magnet (1) more distant pole (15) of the pivotable auxiliary anchor (6) supporting leg (2) has a window-like recess (31), and in that the - ^ ntmagnetisierunge "winding (18) of the two the ^a usnehn.ung (31) enclosing between them webs (32,33) encloses only the one web (32)" 13 ") relay according to any one of claims 5,6,9 and 12, characterized in _t that the pivotable auxiliary or working anchor (6 resp", 9) as a unilaterally clamped spring from? magnetic material formed iet _o