WO2000057444A1 - Star-to-triangle switching element - Google Patents

Star-to-triangle switching element Download PDF

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Publication number
WO2000057444A1
WO2000057444A1 PCT/SI2000/000005 SI0000005W WO0057444A1 WO 2000057444 A1 WO2000057444 A1 WO 2000057444A1 SI 0000005 W SI0000005 W SI 0000005W WO 0057444 A1 WO0057444 A1 WO 0057444A1
Authority
WO
WIPO (PCT)
Prior art keywords
star
switching element
per
triangle switching
mobile
Prior art date
Application number
PCT/SI2000/000005
Other languages
French (fr)
Inventor
Alojz Lovrencic
Jože PIHLER
Original Assignee
Alojz Lovrencic
Pihler Joze
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
Priority to EA200100986A priority Critical patent/EA200100986A1/en
Priority to APAP/P/2001/002292A priority patent/AP1312A/en
Priority to AT00923058T priority patent/ATE258335T1/en
Priority to AU43239/00A priority patent/AU4323900A/en
Priority to DE60007846T priority patent/DE60007846T2/en
Priority to EP00923058A priority patent/EP1163691B1/en
Application filed by Alojz Lovrencic, Pihler Joze filed Critical Alojz Lovrencic
Priority to CA002367170A priority patent/CA2367170A1/en
Priority to JP2000607239A priority patent/JP2002540560A/en
Publication of WO2000057444A1 publication Critical patent/WO2000057444A1/en
Priority to LVP-01-136A priority patent/LV12800B/en
Priority to HR20010698A priority patent/HRP20010698A2/en
Priority to HK02104547.8A priority patent/HK1044221A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/12—Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/005—Inversing contactors

Definitions

  • the invention refers to the star-to-triangle switching element that allows for switch-on, start-up and operation of asynchronous electromotors and successfully replaces the existing versions of contactor combinations for control of asynchronous motors with the power exceeding 4kW.
  • the invention is classified into class H 01 H and/or precisely into class H01 H 03/46 of the international patent classification.
  • the technical problem successfully solved by the invention in question involves the design and the construction of such switching element that will allow for successful replacement of a combination of several contactor elements, in particular in those applications where one element may replace a combination of two or three contactors, such as required in the existing solutions and constituting an assembly where the power and the control sections between the contactors must be correctly wire-connected, unless the assembly may be damaged or even destroyed.
  • the constructional concept of the switching element referred to in this invention provides for three independent positions, which is via the transmission elements transmitted into the contact section where the mobile support of flexible contacts with its movement closes the corresponding contacts, which first provides for electromotor power supply - star (Y) - with reverse connection to the star point, and upon the lapse of certain time, for power supply - triangle (D) - which corresponds to the rated voltage of the electromotor winding, double-step start-up Y - D.
  • the contact system provides smooth operation and significantly simplifies the traditional contactor combinations through the use of three contactors and a time-switch relay.
  • the switching time is adjustable and depends on the load driven by the electromotor, while the starter position is signalized.
  • the star-to-triangle switching element such as referred to in this invention, will be explained in detail on the basis of the concrete example and the corresponding figures, showing the following:
  • Figure 1 Star-to-triangle switching element, such as referred to in this invention, cross-section and front view;
  • Figure 2 Star-to-triangle switching element, such as referred to in this invention, cross-section and longitudinal view;
  • Figure 3 Star-to-triangle switching element, such as referred to in this invention, cross-section and top view;
  • Figure 4 Star-to-triangle switching element, such as referred to in this invention, cross-section and lateral view.
  • the driving element consists of two fixed armatures 1 and one mobile armature 2.
  • the fixed armatures 1 bear, attached with special loops 3, the coils 4,5, each of them in the make state representing one make state of the switching element referred to in this invention.
  • Suspended between them is the armature 2 in the form of letter E; it moves along lateral metal guides 6 that at the same time provide for adequate spacing of the fixed armatures 1.
  • the mobile armature 2 in the break state of the coils 4, 5 is idle, which represents the third, off position of the element.
  • the mobile armature 2 transmits the force over a steel support 7 and over a transmission lever 8 to the mobile support 9 of the flexible contacts 10, 11 , 12 in the contact section of the switching element.
  • the input fixed contacts L1 , L2, L3 are located on one side of the switching element, and the output fixed contacts U1 , V1 , W1 and U2, V2,
  • the contacts are covered by two insulation covers 31 with openings for connection wires.
  • 11 12 moves to position a.
  • the load current flows from the input fixed contacts L1 , L2, L3 via the mobile contacts 11 to the output fixed contacts 1 ) 1 , V1 , W1 and through the wires to the electromotor winding.
  • the ends of the winding are connected to the fixed contacts U2, V2, W2, where the star-point 13 is closed via the mobile contacts 10.
  • the electromotor winding is supplied with the voltage 230 V (Y) and the motor rotor achieves 2/3 rated rotations.
  • the coil 4 Upon the lapse of the start-up time, the coil 4 becomes inactive, while the coil (5) becomes active and causes the mobile support 9 with contacts 10, 11 , 12 to move to the position b. Thereby the star-point 13 opens and the current flows via the flexible contacts 11 , 12 and permanent contacts U1 , V1 , W1 and U2, V2, W2 into the electromotor winding.
  • the electromotor winding is supplied with 400 V (D) voltage, which is the electromotor winding rated voltage, the rotor achieves rated rotations and accordingly provides permanent operation.
  • the star-to-triangle switching element is controlled as every traditional contactor, either only with the switch 01 or via the ON/OFF key of the existing remote switch; it can be mounted on a standard carrier strip or fixed with screws.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of El Displays (AREA)
  • Semiconductor Lasers (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

The invention refers to the star-to-triangle switching element that allows for switch-on, start-up and operation of asynchronous electromotors and successfully replaces the existing versions of contactor combinations for control of asynchronous motors with the power exceeding 4kW, which, however, does not limit its use elsewhere. The constructional concept of the switching element referred to in this invention provides for three independent positions, which is via the transmission elements transmitted into the contact section where the mobile support of flexible contacts with its movement closes the corresponding contacts, which first provides for electromotor power supply - star (Y) - with reverse connection to the star point, and upon the lapse of certain time, for power supply - triangle (D). This is achieved in such a way that the driving element consists of two fixed armatures (1) bearing, attached with special loops (3), the coils (4,5), separated by distance plates (6) that at the same time serve as a guide for the joint armature (2) with the opening (c) wherein fits the mobile metal support (7) in the way that the armature (2) is limited in its movement.

Description

STAR-TO-TRIANGLE SWITCHING ELEMENT
The invention refers to the star-to-triangle switching element that allows for switch-on, start-up and operation of asynchronous electromotors and successfully replaces the existing versions of contactor combinations for control of asynchronous motors with the power exceeding 4kW. In general, the invention is classified into class H 01 H and/or precisely into class H01 H 03/46 of the international patent classification. The technical problem successfully solved by the invention in question involves the design and the construction of such switching element that will allow for successful replacement of a combination of several contactor elements, in particular in those applications where one element may replace a combination of two or three contactors, such as required in the existing solutions and constituting an assembly where the power and the control sections between the contactors must be correctly wire-connected, unless the assembly may be damaged or even destroyed.
The existing solutions solving the imposed technical problem, e.g. that of the start up and operation of electromotors with the power exceeding 4 kW, contain three standard contactors and a time switch relay for star-to- triangle switching. Correct operation of such assembly requires correct wire-connection of power contacts of all three contactors, which is physically more difficult in assemblies of greater powers that involve wires of bigger cross-sections.
The constructional concept of the switching element referred to in this invention provides for three independent positions, which is via the transmission elements transmitted into the contact section where the mobile support of flexible contacts with its movement closes the corresponding contacts, which first provides for electromotor power supply - star (Y) - with reverse connection to the star point, and upon the lapse of certain time, for power supply - triangle (D) - which corresponds to the rated voltage of the electromotor winding, double-step start-up Y - D. The contact system provides smooth operation and significantly simplifies the traditional contactor combinations through the use of three contactors and a time-switch relay. The switching time is adjustable and depends on the load driven by the electromotor, while the starter position is signalized. The star-to-triangle switching element, such as referred to in this invention, will be explained in detail on the basis of the concrete example and the corresponding figures, showing the following:
Figure 1 Star-to-triangle switching element, such as referred to in this invention, cross-section and front view;
Figure 2 Star-to-triangle switching element, such as referred to in this invention, cross-section and longitudinal view; Figure 3 Star-to-triangle switching element, such as referred to in this invention, cross-section and top view;
Figure 4 Star-to-triangle switching element, such as referred to in this invention, cross-section and lateral view.
The driving element consists of two fixed armatures 1 and one mobile armature 2. The fixed armatures 1 bear, attached with special loops 3, the coils 4,5, each of them in the make state representing one make state of the switching element referred to in this invention. Suspended between them is the armature 2 in the form of letter E; it moves along lateral metal guides 6 that at the same time provide for adequate spacing of the fixed armatures 1. The mobile armature 2 in the break state of the coils 4, 5 is idle, which represents the third, off position of the element. The mobile armature 2 transmits the force over a steel support 7 and over a transmission lever 8 to the mobile support 9 of the flexible contacts 10, 11 , 12 in the contact section of the switching element.
The input fixed contacts L1 , L2, L3 are located on one side of the switching element, and the output fixed contacts U1 , V1 , W1 and U2, V2,
W2 on the other side, which corresponds to the marking of the electromotor connection plate. The contacts are covered by two insulation covers 31 with openings for connection wires. In case of the coil 4 in the make state the mobile support 9 bearing the contacts 10, 11 12 moves to position a. The load current flows from the input fixed contacts L1 , L2, L3 via the mobile contacts 11 to the output fixed contacts 1)1 , V1 , W1 and through the wires to the electromotor winding. The ends of the winding are connected to the fixed contacts U2, V2, W2, where the star-point 13 is closed via the mobile contacts 10. The electromotor winding is supplied with the voltage 230 V (Y) and the motor rotor achieves 2/3 rated rotations. Upon the lapse of the start-up time, the coil 4 becomes inactive, while the coil (5) becomes active and causes the mobile support 9 with contacts 10, 11 , 12 to move to the position b. Thereby the star-point 13 opens and the current flows via the flexible contacts 11 , 12 and permanent contacts U1 , V1 , W1 and U2, V2, W2 into the electromotor winding. At this moment the electromotor winding is supplied with 400 V (D) voltage, which is the electromotor winding rated voltage, the rotor achieves rated rotations and accordingly provides permanent operation.
The star-to-triangle switching element is controlled as every traditional contactor, either only with the switch 01 or via the ON/OFF key of the existing remote switch; it can be mounted on a standard carrier strip or fixed with screws.

Claims

PATENT CLAIMS
1 . The star-to-triangle switching element, characterized in that the driving section contains two fixed armatures (1 ) that bear, attached with special loops 3, the coils 4,5, separated by the distance plate (6) that at the same time serve for a guide of the joint armature (2) with the opening (c) into which the mobile metal support fits in such a way that the armature (2) is limited in its movement.
2. The star-to-triangle switching element as per claim 1 , characterized in that the mobile metal support (7) moves vertically along the grooves of the housing (32) and is in its lower part (14) adapted for mounting of the round head (15) of the transmission lever (8).
3. The star-to-triangle switching element as per claims 1 and 2, characterized in that at mounting of the coil-formers (4, 5) to the armature (1 ) the two removable loops (3) may get stuck into the respective two teeth (16) on the coils (4, 5).
4. The star-to-triangle switching element as per claims 1 through 3, characterized in that the transmission lever (8) is mobile by means of the round thick central part (17), moving inside the semi-round sliding bearing of the housing (18) as well as in the insertable sliding bearing (19), fixed with the steel snap ring (20) in the groove of the housing, while the two round heads (15, 21 ) on the sides of the transmission lever (8) allow for vertical movement of the mobile parts and for horizontal sliding.
5. The star-to-triangle switching element as per claims 1 through 4, characterized in that the contact system has two make positions and one break position whereby three input connections (L1 , L2, L3) are positioned on one side and six output connections (U1 , V1 , W1 , U2, V2, W2) on the other side of the switching element in the way that the double two-line fixed contacts (22) have only one common connection point (23) per phase.
6. The star-to-triangle switching element as per claims 1 through 5, characterized in that due to their double function, the mobile contacts (1 1 ) are fixed between the springs (24), and the star-point (13) is placed in an insulating chamber (25) in the way to cover all three phase fields (26), such as enabled by the specially shaped mobile contacts (10).
7. The star-to-triangle switching element as per claims 1 through 6, characterized in that the control of the driving coils (4, 5) is effected through wires along the carrier wall (27) gasket into one part of control elements (28) and terminals (29), while the neutral - OFF position of the element is enabled by the springs (33).
8. The star-to-triangle switching element as per claims 1 through 7, characterized in that the covering part of the element (30) fixes also the lateral covering insulating parts (31 ) of the fixed contacts (L1 , L2, L3) and (U, V1 , W1 , U2, V2, W2) with openings for power terminals inserted into the respective grooves (32) of the housing.
PCT/SI2000/000005 1999-03-24 2000-03-21 Star-to-triangle switching element WO2000057444A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
APAP/P/2001/002292A AP1312A (en) 1999-03-24 2000-03-21 Star-to-triangle switching element.
AT00923058T ATE258335T1 (en) 1999-03-24 2000-03-21 STAR DELTA SWITCH
AU43239/00A AU4323900A (en) 1999-03-24 2000-03-21 Star-to-triangle switching element
DE60007846T DE60007846T2 (en) 1999-03-24 2000-03-21 STAR DELTA SWITCH
EP00923058A EP1163691B1 (en) 1999-03-24 2000-03-21 Star-to-triangle switching element
EA200100986A EA200100986A1 (en) 1999-03-24 2000-03-21 SWITCHING ELEMENT OF THE STAR-TRIANGLE SCHEME
CA002367170A CA2367170A1 (en) 1999-03-24 2000-03-21 Star-to-triangle switching element
JP2000607239A JP2002540560A (en) 1999-03-24 2000-03-21 Star-delta switch element
LVP-01-136A LV12800B (en) 1999-03-24 2001-09-24 Star-to-triangle switching element
HR20010698A HRP20010698A2 (en) 1999-03-24 2001-09-24 Star-to-triangle switching element
HK02104547.8A HK1044221A1 (en) 1999-03-24 2002-06-19 Star-to-triangle switching element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI9900062A SI20293A (en) 1999-03-24 1999-03-24 Switching element star-delta
SIP-9900062 1999-03-24

Publications (1)

Publication Number Publication Date
WO2000057444A1 true WO2000057444A1 (en) 2000-09-28

Family

ID=20432427

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SI2000/000005 WO2000057444A1 (en) 1999-03-24 2000-03-21 Star-to-triangle switching element

Country Status (18)

Country Link
EP (1) EP1163691B1 (en)
JP (1) JP2002540560A (en)
CN (1) CN1350694A (en)
AP (1) AP1312A (en)
AT (1) ATE258335T1 (en)
AU (1) AU4323900A (en)
BG (1) BG64574B1 (en)
CA (1) CA2367170A1 (en)
DE (1) DE60007846T2 (en)
EA (1) EA200100986A1 (en)
HK (1) HK1044221A1 (en)
HR (1) HRP20010698A2 (en)
LT (1) LT4962B (en)
LV (1) LV12800B (en)
PL (1) PL349973A1 (en)
SI (1) SI20293A (en)
WO (1) WO2000057444A1 (en)
YU (1) YU67801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983631A1 (en) * 2011-12-06 2013-06-07 Schneider Electric Ind Sas ELECTRIC DRIVE DEVICE IN TRANSLATION OF A PART, ELECTRICAL SWITCHING APPARATUS COMPRISING SUCH A DEVICE AND THREE-PHASE INVERTER COMPRISING SUCH AN APPARATUS
DE102014105579A1 (en) 2014-04-17 2015-10-22 Eaton Electrical Ip Gmbh & Co. Kg Switching device for a star-delta switching in a multi-phase motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105978406B (en) * 2016-05-27 2018-06-01 天津加美特电气设备有限公司 Three phase alternating current motor star angle switch starter
DE202017103748U1 (en) * 2017-06-23 2018-09-26 Weidmüller Interface GmbH & Co. KG Connection device with variable electrical connection between conductor connections

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113500B (en) * 1959-04-25 1961-09-07 Starkstrom Schaltgeraetefabrik Electrical switchgear
FR2130030A1 (en) * 1971-03-19 1972-11-03 Piret Daniel DOUBLE RELAY AND INVERTER INTEGRATED IN ELECTRICAL TECHNOLOGY
WO1996001486A2 (en) * 1994-07-04 1996-01-18 Alojz Lovrencic Electromagnetic contactor element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1113500B (en) * 1959-04-25 1961-09-07 Starkstrom Schaltgeraetefabrik Electrical switchgear
FR2130030A1 (en) * 1971-03-19 1972-11-03 Piret Daniel DOUBLE RELAY AND INVERTER INTEGRATED IN ELECTRICAL TECHNOLOGY
WO1996001486A2 (en) * 1994-07-04 1996-01-18 Alojz Lovrencic Electromagnetic contactor element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983631A1 (en) * 2011-12-06 2013-06-07 Schneider Electric Ind Sas ELECTRIC DRIVE DEVICE IN TRANSLATION OF A PART, ELECTRICAL SWITCHING APPARATUS COMPRISING SUCH A DEVICE AND THREE-PHASE INVERTER COMPRISING SUCH AN APPARATUS
WO2013083646A1 (en) * 2011-12-06 2013-06-13 Schneider Electric Industries Sas Electric device for translating a part, electric-switching apparatus comprising such a device, and three-phase inverter including such an apparatus
DE102014105579A1 (en) 2014-04-17 2015-10-22 Eaton Electrical Ip Gmbh & Co. Kg Switching device for a star-delta switching in a multi-phase motor
US10283297B2 (en) 2014-04-17 2019-05-07 Eaton Intelligent Power Limited Switching device for a wye-delta switch in a multiphase motor

Also Published As

Publication number Publication date
LV12800A (en) 2002-02-20
YU67801A (en) 2006-08-17
LV12800B (en) 2002-06-20
BG105935A (en) 2002-05-31
CA2367170A1 (en) 2000-09-28
CN1350694A (en) 2002-05-22
AP2001002292A0 (en) 2001-12-31
LT2001091A (en) 2002-05-27
EP1163691A1 (en) 2001-12-19
EP1163691B1 (en) 2004-01-21
LT4962B (en) 2002-10-25
PL349973A1 (en) 2002-10-21
HRP20010698A2 (en) 2003-06-30
DE60007846T2 (en) 2004-12-30
AP1312A (en) 2004-09-30
JP2002540560A (en) 2002-11-26
DE60007846D1 (en) 2004-02-26
AU4323900A (en) 2000-10-09
HK1044221A1 (en) 2002-10-11
BG64574B1 (en) 2005-07-29
SI20293A (en) 2000-12-31
ATE258335T1 (en) 2004-02-15
EA200100986A1 (en) 2002-02-28

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