GB1300860A – Improvements in on-load changers for regulating transformers
– Google Patents
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
1970-04-30
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.)
1970-04-30
Filing date
1971-04-30
Publication date
1972-12-20
1971-04-30
Application filed by National Industri AS
filed
Critical
National Industri AS
1972-12-20
Publication of GB1300860A
publication
Critical
patent/GB1300860A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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)
DE2166929A1
(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.
1970
1970-04-30
NO
NO165170A
patent/NO122851B/no
unknown
1971
1971-04-19
SE
SE505471A
patent/SE367273B/xx
unknown
1971-04-27
DE
DE19712166929
patent/DE2166929A1/en
active
Pending
1971-04-27
DE
DE19712120679
patent/DE2120679C3/en
not_active
Expired
1971-04-29
DK
DK206971A
patent/DK126406B/en
unknown
1971-04-29
FR
FR7115381A
patent/FR2090942A5/fr
not_active
Expired
1971-04-30
GB
GB1256271A
patent/GB1300860A/en
not_active
Expired
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
DE2120679A1
(en)
1971-11-18
SE367273B
(en)
1974-05-20
FR2090942A5
(en)
1972-01-14
DE2120679C3
(en)
1980-02-07
NO122851B
(en)
1971-08-23
DE2166929A1
(en)
1976-10-28
DK126406B
(en)
1973-07-09
DE2120679B2
(en)
1977-03-31
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Legal Events
Date
Code
Title
Description
1973-05-02
PS
Patent sealed
1981-12-02
PCNP
Patent ceased through non-payment of renewal fee
