WO1991019305A1 - Procede et dispositif de blindage de transformateur de courant et transformateur de courant comprenant ce blindage - Google Patents

Procede et dispositif de blindage de transformateur de courant et transformateur de courant comprenant ce blindage Download PDF

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Publication number
WO1991019305A1
WO1991019305A1 PCT/DK1991/000148 DK9100148W WO9119305A1 WO 1991019305 A1 WO1991019305 A1 WO 1991019305A1 DK 9100148 W DK9100148 W DK 9100148W WO 9119305 A1 WO9119305 A1 WO 9119305A1
Authority
WO
WIPO (PCT)
Prior art keywords
transformer
shield
core
current transformer
yoke
Prior art date
Application number
PCT/DK1991/000148
Other languages
English (en)
Inventor
Thomas Erlang Hansen
Thomas Tingleff
Original Assignee
Lk Lavspaending A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lk Lavspaending A/S filed Critical Lk Lavspaending A/S
Publication of WO1991019305A1 publication Critical patent/WO1991019305A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens

Definitions

  • the invention relates to a method of shielding a current transformer comprising a circumferential core accomodating a through- oing primary conductor forming the primary winding of said transformer, and a number of secondary windings wound on defined portions of the core whereas the remaining portions of the core are not covered by windings and provide yokes .
  • a circumferential core is meant a core formed as a closed loop, which -is preferably circular, rectangular, square or a combination thereof.
  • transformers are usually structured as single-phase transformers. Calculations have been made concerning loss of iron and copper, transformation ratio error and phase displacement in accordance with guidelines well-known to persons skilled in the art. The latter also applies to transformers to be used as current transformers, where it is not desired to transfer energy, but merely to achieve
  • Transformation ratio error and phase displacement can for any transformer for instance be measured in a bridge circuit by comparing with a very accurate "standard” inserted in said bridge circuit, which is a well-known procedure to persons skilled in the art.
  • Some of the above problems can be solved by enlarging the core in such a manner that the reluctance to the magnetic flux in the circuit is reduced with the effect that the tendency of the field to propagate in other directions is dampened.
  • the above solution is not always applicable.
  • the transformer is unable to transfer an excess current during a fault condition.
  • Such an excess current might damage the measuring equipment coupled to the secondary circuit.
  • the core has intentionally been dimensioned so small that it satu- rates when the current exceeds the maximally allowed level. Accordingly, a demand exists for a solution of the problem without increasing the dimensions of the core.
  • EP publication No. 0 Oil 590 discloses a completely insu ⁇ lated, metal-enclosed three-phase high-voltage switchboard with a current measuring transformer for a through passing conductor in each phase.
  • Three conductors extend through a metal cap of a circular cross section as well as their respective closed iron core.
  • Each iron core comprises a secondary winding, a shield of a ferromagnetic and/or a conducting material extending substantially parallel to the conductors, where the shields have been mutually short- circuited at both ends.
  • GB-PS No. 1,191,756 discloses a current measuring device almost completely surrounded by and enclosed in one or more shields, where it has been necessary to provide a short-circuiting winding around the shield in order to compensate for an undesired flux induced in the shield by the primary conductor extending through said shield.
  • GB Patent Application No. 2 073 499 discloses a winding support or coil form for a measuring transformer. Electro ⁇ magnetic shields shield the transformer against fields ex- citated by the motor, said transformer measuring motor current.
  • US-PS No. A, 749, 979 discloses a transformer with a magnetic shield surrounding an E-I laminated core with windings around the central limb.
  • the shield comprises two circum ⁇ ferential metal strips extending almost parallel to one another almost the entire way around the laminated core at an as constant as possible mutual distance and perpen- dicularly to the direction of the laminates.
  • the object of the shield is to protect the electronic circuits of a Compact Disc player against magnetic fields excitated by the transformer supplying the circuits with power.
  • the object of the present invention is to provide a simple and efficient method of shielding a current transformer of the above type against the effects of environmental fields from the outside (i.e. magnetic fields other than the fields excitated by the current to be measured) , especially in connection with coupling thereof to a compact multiphase heavy current system with short distances between the phases, and to produce a current transformer and a shield for a current transformer suitable for current intensities in the kAmp class of for instance about 4000 Amp .
  • the shielding problems are solved by the yoke(s) exposed to environmental magnetic fields, i.e. magnetic fields other than the fields exci ⁇ tated by a current through the primary winding of the transformer, being completely or partially shielded by a ferro or ferrimagnetic material neither extending over nor covering any windings or portions of windings.
  • the shield is preferably an iron plate bent substantially like a U in such a manner that it can cover the three surfaces of the yoke of the current transformer.
  • the iron plate is preferably of a thickness of about 2 mm.
  • the shield should not be in conducting contact with the core of the current transformer, but it may be placed close to said core.
  • Fig. lA illustrates a typical non-enclosed current trans ⁇ former with a rectangular core
  • Fig. IB illustrates a typical current transformer enclosed in a plastic housing
  • Fig. 2 is a sectional view of a three-phase transformer arrangement for measuring current
  • Fig. 3 is a top view of a measuring circuit
  • Fig. 4 illustrates curves of the transformation ratio error as function of the primary current
  • Fig. 5 illustrates curves of phase displacement as function of the primary current
  • Fig. 6 illustrates curves of the transformation ratio error as function of the primary current
  • Fig. 7 illustrates curves of phase displacement as function of the primary current
  • Fig. 8 illustrates curves of the transformation ratio error as function of the primary current
  • Fig. 9 illustrates curves of phase displacement as function of the primary current
  • Fig. 10A is a sectional view of a preferred embodiment of a shield according to the invention for a transformer
  • Fig. 10B is a view of the embodiment of Fig. 10A in the unfolded state
  • Fig. 11 illustrates a preferred embodiment of a trans ⁇ former
  • Fig. 12 illustrates an alternative shielding
  • Fig. 13 illustrates an example of a current rail
  • Fig. 14 show sectional views of various embodiments of shields according to the invention.
  • a typical current transformer 10 appears from Figs. 1A and IB, and it comprises a substantially rectangular core 12 enclosing a primary conductor in form of a current rail 14, or in form of a rail assembly including several current rails 14. On two sides, the core 12 is provided with a secondary winding 16 connected to a measuring instrument not shown. Two yokes 18 interconnect the wound portions of the core. The above portions are known, and it is furthermore known to embed the transformer in plast ⁇ ics as shown in Fig. IB.
  • Two or three current transformers 10, 20, 30 are often placed side by side in a three-phase system R, S, T, cf. Fig. 2, and all portions are often enclosed in a casing 40.
  • the casing is typically a case of the type used in connection with switchboards, and it is usually made of conventional, magnetizable iron plate influencing the fields because part of the magnetic field will find a path via the case and thereby possibly cause errors in measurements .
  • a flexible measuring arrangement including three dis- placeable, horizontal rails 14, i.e. one in each phase R, S, T, as shown in Fig. 3, the measuring was carried out on transformers placed in either phase R, S or T, and the following parameters were varied one by one:
  • the load i.e. the load of the transformer on the secondary side
  • the transformation ratio error for the above transformer class must not for example exceed 0.2% for currents on the primary side from 20% to 120% of the rated current.
  • the curves 5B of Figs. 4 and 5 are measured for varying loads on the secondary circuit, 2.5 VA, 5 VA, 7.5 VA, 10 VA and 17.5 VA.
  • the distance d between the phase conductors 14 was 55 mm.
  • two curves are indi ⁇ cated, viz. Ref IB 2.5 VA and Ref IB 17.5 VA, measured with the distance d. corresponding to 250 mm between the phase conductors, i.e. with such a large distance between the conductors that the mutual influence can be ignored. It appears that the curves 5B highly deviate from the reference curves IB when the primary current exceeds about 100% of the rated current, and especially when the secon ⁇ dary side is heavily loaded.
  • the transformer only meets class 0.2 for a load of up to 7.5 VA.
  • the curves of Figs. 6 and 7 are based on measurements with varying distances to the front wall and the rear wall of the casing (100/100, 90/90, 80/80, 70/70 and 60/60) and with a permanent distance to the side walls.
  • the shielding is provided by means of a 1.5 mm thick iron plate folded into a U and placed such that the yokes of the transformers are covered.
  • the distance d. between the conductors was maintained at 55 mm, and the displacement f. was infinite as only one trans ⁇ former was placed in the intermediary phase.
  • the secondary side was loaded by 10 VA.
  • the error increases heavily when the primary current exceeds about 100% of the rated current, and the error is larger when the case or cabinet is close to the transformer.
  • the measurement 29B with a casing distance of 60/60, i.e. 60 mm between the transformer and the rear/- front wall, exceeds the allowed error. It appears from the curves, that the phase displacement increases in almost the same manner as the transformation ratio error, but when seen in relation to the standards, the transformation ratio error is the most critical error.
  • the measurement accuracy of the current transformer can be considerably improved by placing a plate of iron 50 or of a corresponding magnetizable material between the two neighboring transformers 10, 20 or 20, 30, cf. Fig. 3, or between a transformer 20 and the neighboring conductors 14 in such a manner that the transformer yokes are shield ⁇ ed.
  • the plate is preferably bent such that it is of a U- shaped cross section or as shown in Fig. 11.
  • Figs. 8 and 9 show curves indicating the transformation ratio error and the phase displacement as function of the primary current in percentages of the rated current, and in connection with three different thicknesses of the plate .
  • the distance d. between the conductors was fixed at 55 mm, and the displacement f. was infinite as only one transformer was placed in the intermediary phase.
  • the secondary side was loaded by 10 V .
  • a curve 14B is chosen as reference curve, said curve being based on a number of measurements carried out on a trans- former 20 in the intermediary phase S (with d. corresponding to 55 mm between the conductors and a load of 10 VA) under the same conditions, but without the casing, and with a 1.5 mm thick shield.
  • the curves 42B , 43B and 44B of Figs. 8 and 9 are measured with a casing or case comprising a front wall 80 mm above the casing of the current trans ⁇ former and a rear wall 40 mm below said casing of the current transformer, cf. at the bottom of Fig. 8. Further ⁇ more, the transformer yokes were shielded by means of a U-shaped shield according to the invention of a thickness of 1.5, 2.0 and 2.5 mm, respectively.
  • the curves of Figs. 8 and 9 show that the effect of the shield is increased, i.e. the error being measured de- creases and the curves approach the reference curves 14B , when the thickness of the shield increases.
  • the curves 14B and 44B meet the standard, the curve 43B is on the limit, and the curve 42B clearly exceeds the limit of 0.2%..
  • the latter curve is obtained with a thin shield of only 2.5 mm, and said shield turned out to be insuffi ⁇ cient in connection with the casing/case used, at least when the primary current approaches 120% of the rated current .
  • the shield 50 is advantageously struc- tured as shown in Figs. 10 and 11.
  • the shield is preferably made of iron plate, but other magnetizable materials, such as a sintered ferrimagnetic material, are within the scope of the invention.
  • the shield comprises a central portion 52 dimensioned almost identical with the width and the length of the yokes 18 of the current transformer.
  • the shield comprises furthermore two side portions 54 providing an additional shielding, and they are advantageously provided with obliquely cut corners 56 and advantageously bent such that they are placed close to the transformer yoke 18, preferably at a distance optionally filled with an insulat ⁇ ing material, such as sheet or plastics, forming part of a coil ⁇ form for the transformer.
  • the shield is advantageously embedded in a plastic enclo- sure for a current transformer.
  • the shielding effect is obtained because the shield 50 "collects" the fields from the neighboring conductor 14.
  • said shield should neither cover nor partially enclose the secondary winding because the shield in that case would magnetically shunt the magnetic field in the core.
  • Such an unintentional structure implies that the current transformer is encumbered with a higher measurement error.
  • the shield may be of a "top hat"-shaped cross section with additional side webs, cf. Fig. 14A or side webs, cf. Fig. 14B .
  • the bottom of the U may be almost rectilinear, cf. Fig. 10A, or semicir- cular, cf . Fig. 14C.
  • the legs of the U may extend obliquely to the sides as indicated in Figs. 14D and 14E.
  • the shield may be made of a sintered ferrimagnetic , option ⁇ ally crescent-shaped material, cf. Fig. 14F.
  • FIG. 11 A preferred embodiment of a current transformer with a shield according to the invention appears from Fig. 11.
  • the embodiment of Fig. 11 avoids the sharp corners present ⁇ ed by the rectangular transformer, cf. Fig. 1. Such sharp corners may cause field concentrations in turn causing a spreading of the said field and consequently measuring errors.
  • the circumferential transformer core 72 is preferably wound by circumferential iron straps and preferably by a single continuous iron strap.
  • the core comprises two opposing, substantially circular portions 75 carrying the secondary winding 76.
  • the circular portions are intercon ⁇ nected by two substantially rectilinear portions forming yokes 78.
  • two U-shaped iron plate members 50 are according to the invention placed about the two recti ⁇ linear transformer yokes 78.
  • the two iron plate members are arranged such that they preferably, cover completely the three surfaces
  • the same effect can be achieved by 20 directly shielding the neighboring conductor, such as by means of a U-shaped shield 60, cf. Fig. 12.
  • a shield for the neighboring conductor may be shaped in ' the same manner as the shields shown in Figs. 14A, B, C, D and E.
  • the shield 25 is provided by a simple flat plate between the neighboring conductor and the transformer yoke.
  • the shield is a combina ⁇ tion of a U-shaped rail 60 gripping about the conductor 14, and a plate 61 optionally welded to the U-shaped rail 30 60, cf. Fig. 13, and abutting the yoke not shown in Fig. 13.
  • a shielding of the above type may optionally be provided in connection with or as part ' of a fitting, such as a fitting for fastening current rails or transformers. Such an embodiment is within the scope of protection of the present application.

Abstract

Un transformateur de courant comprenant un noyau périphérique (12) ainsi qu'un conducteur traversant (14) formant l'enroulement primaire dudit transformateur et un enroulement secondaire (16) bobiné sur des parties déterminées du noyau (12) tandis que la partie restante du noyau (12) n'est pas couverte par les enroulements et forme une culasse (18), doit être protégé contre l'exposition à des champs environnants, particulièrement quand il fait partie d'un système triphasé pourvu de conducteurs disposés les uns à côté des autres, ce qui implique de fortes intensités de courant. Selon l'invention, la ou les culasse(s) exposée(s) à des champs magnétiques étrangers sont blindée(s), totalement ou en partie, au moyen d'un ou plusieurs blindages (50) en matière ferro ou ferrimagnétique qui ne recouvre ni ne passe au-dessus des enroulements ou parties d'enroulement. Par champs magnétiques étrangers, on entend les champs situés au-delà du champ provoqué par un courant dans l'enroulement primaire du transformateur. De cette façon, le transformateur de courant peut atteindre l'exactitude de mesure souhaitée.
PCT/DK1991/000148 1990-06-01 1991-05-31 Procede et dispositif de blindage de transformateur de courant et transformateur de courant comprenant ce blindage WO1991019305A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK136790A DK169008B1 (da) 1990-06-01 1990-06-01 Fremgangsmåde og skærm til afskærmning af en strømtransformer samt strømtransformer med en sådan afskærmning
DK1367/90 1990-06-01

Publications (1)

Publication Number Publication Date
WO1991019305A1 true WO1991019305A1 (fr) 1991-12-12

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AU (1) AU7966591A (fr)
DK (1) DK169008B1 (fr)
WO (1) WO1991019305A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556099A1 (fr) * 1992-02-14 1993-08-18 ABB CONTROL Société Anonyme Capteur de courant
US5546065A (en) * 1991-09-13 1996-08-13 Vlt Corporation High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances
DE19822515C2 (de) * 1998-05-19 2000-07-06 Siemens Ag Abschirmung für Summenstrom-Wandleranordnung für Fehlerstrom-Schutzschalter
US6143157A (en) * 1995-11-27 2000-11-07 Vlt Corporation Plating permeable cores
FR2799840A1 (fr) * 1999-10-15 2001-04-20 Rs Isolsec Capteur de courant differentiel
WO2002046777A2 (fr) * 2000-12-07 2002-06-13 Lem Heme Limited Capteurs de courant
WO2003009316A1 (fr) * 2001-07-17 2003-01-30 Siemens Aktiengesellschaft Transformateur de traversee conçu pour un dispositif de commutation electrique
US7057485B2 (en) * 2000-03-07 2006-06-06 Vacuumschmelze Gmbh & Co. Kg Current transformer for a compensating current sensor
GB2455847A (en) * 2007-12-19 2009-06-24 Atreus Entpr Ltd A current transformer using magnetic elements to improve the core balance
CN102208269A (zh) * 2011-03-03 2011-10-05 厦门宏美电子有限公司 一种用于小电流的电流互感器组件
US9815813B2 (en) 2014-01-17 2017-11-14 Novartis Ag 1-(triazin-3-yl/pyridazin-3-yl)-piper(-azine)idine derivatives and compositions therefor for inhibiting the activity of SHP2
US10077276B2 (en) 2014-01-17 2018-09-18 Novartis Ag N-azaspirocycloalkane substituted N-heteroaryl compounds and compositions for inhibiting the activity of SHP2
US10093646B2 (en) 2014-01-17 2018-10-09 Novartis Ag 1-pyridazin-/triazin-3-yl-piper(-azine)/idine/pyrolidine derivatives and compositions thereof for inhibiting the activity of SHP2
US10287266B2 (en) 2015-06-19 2019-05-14 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10308660B2 (en) 2015-06-19 2019-06-04 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10934285B2 (en) 2016-06-14 2021-03-02 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10975080B2 (en) 2015-06-19 2021-04-13 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
DE202021102815U1 (de) 2021-03-19 2021-06-21 Redur Gmbh & Co Kg Niederspannungsabschirmkörper, Niederspannungsstromwandler, Niederspannungsstromwandleranordnung bzw. Niederspannungselektrikanordnung
DE102021106843A1 (de) 2021-03-19 2022-09-22 Redur Gmbh & Co Kg Niederspannungsabschirmkörper, Niederspannungsstromwandler, Niederspannungsstromwandleranordnung bzw. Niederspannungselektrikanordnung
WO2022194328A2 (fr) 2021-03-19 2022-09-22 REDUR GmbH & Co. KG Corps de blindage basse tension, transformateur de courant basse tension, agencement de transformateur de courant basse tension ou ensemble électrique basse tension

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH318484A (de) * 1954-02-24 1957-01-15 Bbc Brown Boveri & Cie Hochstrom-Schienenstromwandler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH318484A (de) * 1954-02-24 1957-01-15 Bbc Brown Boveri & Cie Hochstrom-Schienenstromwandler

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6653924B2 (en) 1991-09-13 2003-11-25 Vlt Corporation Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer
US5546065A (en) * 1991-09-13 1996-08-13 Vlt Corporation High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances
US5719544A (en) * 1991-09-13 1998-02-17 Vlt Corporation Transformer with controlled interwinding coupling and controlled leakage inducances and circuit using such transformer
FR2687477A1 (fr) * 1992-02-14 1993-08-20 Abb Petercem Capteur de courant.
EP0556099A1 (fr) * 1992-02-14 1993-08-18 ABB CONTROL Société Anonyme Capteur de courant
US6143157A (en) * 1995-11-27 2000-11-07 Vlt Corporation Plating permeable cores
US6165340A (en) * 1995-11-27 2000-12-26 Vlt Corporation Plating permeable cores
DE19822515C2 (de) * 1998-05-19 2000-07-06 Siemens Ag Abschirmung für Summenstrom-Wandleranordnung für Fehlerstrom-Schutzschalter
FR2799840A1 (fr) * 1999-10-15 2001-04-20 Rs Isolsec Capteur de courant differentiel
US7057485B2 (en) * 2000-03-07 2006-06-06 Vacuumschmelze Gmbh & Co. Kg Current transformer for a compensating current sensor
WO2002046777A3 (fr) * 2000-12-07 2003-01-09 Lem Heme Ltd Capteurs de courant
WO2002046777A2 (fr) * 2000-12-07 2002-06-13 Lem Heme Limited Capteurs de courant
WO2003009316A1 (fr) * 2001-07-17 2003-01-30 Siemens Aktiengesellschaft Transformateur de traversee conçu pour un dispositif de commutation electrique
GB2455847A (en) * 2007-12-19 2009-06-24 Atreus Entpr Ltd A current transformer using magnetic elements to improve the core balance
GB2455847B (en) * 2007-12-19 2010-03-10 Atreus Entpr Ltd A curent transformer
CN102208269A (zh) * 2011-03-03 2011-10-05 厦门宏美电子有限公司 一种用于小电流的电流互感器组件
US9815813B2 (en) 2014-01-17 2017-11-14 Novartis Ag 1-(triazin-3-yl/pyridazin-3-yl)-piper(-azine)idine derivatives and compositions therefor for inhibiting the activity of SHP2
US10968235B2 (en) 2014-01-17 2021-04-06 Novartis Ag N-azaspirocycloalkane substituted N-heteroaryl compounds and compositions for inhibiting the activity of SHP2
US10093646B2 (en) 2014-01-17 2018-10-09 Novartis Ag 1-pyridazin-/triazin-3-yl-piper(-azine)/idine/pyrolidine derivatives and compositions thereof for inhibiting the activity of SHP2
US11952386B2 (en) 2014-01-17 2024-04-09 Novartis Ag N-azaspirocycloalkane substituted N-heteroaryl compounds and compositions for inhibiting the activity of SHP2
US10301278B2 (en) 2014-01-17 2019-05-28 Novartis Ag 1-(triazin-3-yl/pyridazin-3-yl)-piper(-azine)idine derivatives and compositions therefor for inhibiting the activity of SHP2
US10077276B2 (en) 2014-01-17 2018-09-18 Novartis Ag N-azaspirocycloalkane substituted N-heteroaryl compounds and compositions for inhibiting the activity of SHP2
US10336774B2 (en) 2014-01-17 2019-07-02 Novartis Ag N-azaspirocycloalkane substituted N-heteroaryl compounds and compositions for inhibiting the activity of SHP2
US10774065B2 (en) 2014-01-17 2020-09-15 Novartis Ag 1-pyridazin-/triazin-3-yl-piper(-azine)/idine/pyrolidine derivatives and compositions thereof for inhibiting the activity of SHP2
US11401259B2 (en) 2014-01-17 2022-08-02 Novartis Ag 1-Pyridazin-/triazin-3-yl-piper(-azine)/idine/pyrolidine derivatives and compositions thereof for inhibiting the activity of SHP2
US10308660B2 (en) 2015-06-19 2019-06-04 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10975080B2 (en) 2015-06-19 2021-04-13 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10287266B2 (en) 2015-06-19 2019-05-14 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US10934285B2 (en) 2016-06-14 2021-03-02 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
US11905283B2 (en) 2016-06-14 2024-02-20 Novartis Ag Compounds and compositions for inhibiting the activity of SHP2
DE202021102815U1 (de) 2021-03-19 2021-06-21 Redur Gmbh & Co Kg Niederspannungsabschirmkörper, Niederspannungsstromwandler, Niederspannungsstromwandleranordnung bzw. Niederspannungselektrikanordnung
DE102021106843A1 (de) 2021-03-19 2022-09-22 Redur Gmbh & Co Kg Niederspannungsabschirmkörper, Niederspannungsstromwandler, Niederspannungsstromwandleranordnung bzw. Niederspannungselektrikanordnung
WO2022194328A2 (fr) 2021-03-19 2022-09-22 REDUR GmbH & Co. KG Corps de blindage basse tension, transformateur de courant basse tension, agencement de transformateur de courant basse tension ou ensemble électrique basse tension

Also Published As

Publication number Publication date
DK136790A (da) 1991-12-02
AU7966591A (en) 1991-12-31
DK169008B1 (da) 1994-07-25
DK136790D0 (da) 1990-06-01

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