GB1300860A - Improvements in on-load changers for regulating transformers - Google Patents

Improvements in on-load changers for regulating transformers

Info

Publication number
GB1300860A
GB1300860A GB1256271A GB1256271A GB1300860A GB 1300860 A GB1300860 A GB 1300860A GB 1256271 A GB1256271 A GB 1256271A GB 1256271 A GB1256271 A GB 1256271A GB 1300860 A GB1300860 A GB 1300860A
Authority
GB
United Kingdom
Prior art keywords
contacts
resistors
thyristor
currents
circuits
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1256271A
Inventor
Egil Henriksen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Industri AS
Original Assignee
National Industri AS
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 National Industri AS filed Critical National Industri AS
Publication of GB1300860A publication Critical patent/GB1300860A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0288—Seam welding; Backing means; Inserts for curved planar seams for welding of tubes to tube plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

1300860 Transformers NATIONAL INDUSTRI AS 30 April 1971 [30 April 1970] 12562/71 Heading HIT An on-load top changer for a regulating transformer comprises a power transfer switch having fixed main contacts H1, H2 and respective auxiliary contacts M1, M2 and a thyristor circuit connected between each main contact and its auxiliary which is capable of conducting in either direction between the two. Resistors R3, R4 in parallel with fuses S1, S2 are connected in series with the thyristor circuits such that, if the circuits do simultaneously conduct resulting in large circulating currents being developed, the fuses S1 and S2 will blow connecting the resistors R3 and R4 in circuit such that they act as conventional transfer resistors. Supply units P1 and P2 are connected between the contacts and a control unit St for the purpose of supplying ignition currents to the thyristors Q1 and Q2 or Q3 and Q4 at the required stages of the top changing operation. This operation, described in detail in the Specification, is such that the thyristor circuits connected across the respective contacts do not simultaneously conduct, therefore preventing circulating alternating currents from being set up when both the contacts M1 and M2 are closed. Other suitable electronic devices may be used in place of the thyristors.
GB1256271A 1970-04-30 1971-04-30 Improvements in on-load changers for regulating transformers Expired GB1300860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO165170A NO122851B (en) 1970-04-30 1970-04-30

Publications (1)

Publication Number Publication Date
GB1300860A true GB1300860A (en) 1972-12-20

Family

ID=19878347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256271A Expired GB1300860A (en) 1970-04-30 1971-04-30 Improvements in on-load changers for regulating transformers

Country Status (6)

Country Link
DE (2) DE2120679C3 (en)
DK (1) DK126406B (en)
FR (1) FR2090942A5 (en)
GB (1) GB1300860A (en)
NO (1) NO122851B (en)
SE (1) SE367273B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304851A1 (en) * 1983-02-12 1984-08-16 Reinhausen Maschf Scheubeck SWITCHING ARRANGEMENT FOR LOAD SWITCHES FROM TAPE SWITCHES FOR TAPE TRANSFORMERS
WO2009073875A1 (en) * 2007-12-07 2009-06-11 Pennsylvania Transformer Technology, Inc Load tap changer
CN114558694A (en) * 2022-02-28 2022-05-31 广东大唐国际雷州发电有限责任公司 Intelligent electric dust removal equipment and dust removal method for coal-fired power plant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844872A1 (en) * 1978-10-14 1980-04-30 Siemens Ag ACTUATOR FOR ELECTRIC TOY AND MODEL RAILWAYS
SE436530B (en) * 1983-05-10 1984-12-17 Asea Ab Tap changers
FR2695769B1 (en) * 1992-09-17 1994-11-25 Electricite De France Static circuit alternating voltage regulator under load.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304851A1 (en) * 1983-02-12 1984-08-16 Reinhausen Maschf Scheubeck SWITCHING ARRANGEMENT FOR LOAD SWITCHES FROM TAPE SWITCHES FOR TAPE TRANSFORMERS
DE3304851C2 (en) * 1983-02-12 1991-01-10 Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De
WO2009073875A1 (en) * 2007-12-07 2009-06-11 Pennsylvania Transformer Technology, Inc Load tap changer
US7595614B2 (en) 2007-12-07 2009-09-29 Pennsylvania Transformer Technology, Inc. Load tap changer
CN114558694A (en) * 2022-02-28 2022-05-31 广东大唐国际雷州发电有限责任公司 Intelligent electric dust removal equipment and dust removal method for coal-fired power plant
CN114558694B (en) * 2022-02-28 2022-12-20 广东大唐国际雷州发电有限责任公司 Intelligent electric dust removal equipment and dust removal method for coal-fired power plant

Also Published As

Publication number Publication date
DK126406B (en) 1973-07-09
NO122851B (en) 1971-08-23
DE2120679C3 (en) 1980-02-07
DE2120679B2 (en) 1977-03-31
DE2120679A1 (en) 1971-11-18
FR2090942A5 (en) 1972-01-14
SE367273B (en) 1974-05-20
DE2166929A1 (en) 1976-10-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee