GB1459290A - Low balanced reactance delta closure for electric arc furnace transformers - Google Patents
Low balanced reactance delta closure for electric arc furnace transformersInfo
- Publication number
- GB1459290A GB1459290A GB5492674A GB5492674A GB1459290A GB 1459290 A GB1459290 A GB 1459290A GB 5492674 A GB5492674 A GB 5492674A GB 5492674 A GB5492674 A GB 5492674A GB 1459290 A GB1459290 A GB 1459290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pair
- phase
- welded
- arc furnace
- conductors
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/11—Arrangements for conducting current to the electrode terminals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Discharge Heating (AREA)
- Ac-Ac Conversion (AREA)
- Furnace Details (AREA)
Abstract
1459290 Transformers USS ENGS & CONSULTANTS Inc 19 Dec 1974 [14 Jan 1974 23 July 1974] 54926/74 Heading HIT [Also in Division H2] A low balanced reactance delta closure for a three phase arc furnace transformer 18 comprises a pair of terminal risers 30 bolted to each of the secondary coil terminals 26. Welded to tubular phase collectors 36A, 36B, 36C and bolted to the risers are riser extensions 32A, 32B, 32C. A pair of hollow riser tubes 48A, 48B, 48C are welded to each collector and to a pair of phase conductors 50A, 60B, 50C which terminate at heads 56 where three pairs of flexible water cooled conductors take the current to the furnace. The hollow phase conductors and collectors are cooled by water inleted and outleted outside the transformer enclosure, the coolant circulating via apertures in the welded joints. The tubes, typically 6 inch square with ¢ inch thick copper walls, are supported by hangers 40 and may be internally divided and stiffened (Figs. 6, 8, 10, 11, 12 not shown).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43291874A | 1974-01-14 | 1974-01-14 | |
| US491080A US3898707A (en) | 1974-01-14 | 1974-07-23 | Low balanced reactance delta closure for electric arc furnace transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1459290A true GB1459290A (en) | 1976-12-22 |
Family
ID=27029676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5492674A Expired GB1459290A (en) | 1974-01-14 | 1974-12-19 | Low balanced reactance delta closure for electric arc furnace transformers |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3898707A (en) |
| JP (1) | JPS5737116B2 (en) |
| AT (1) | AT349770B (en) |
| BR (1) | BR7500169A (en) |
| DE (1) | DE2501106A1 (en) |
| ES (1) | ES433734A1 (en) |
| FR (1) | FR2258075B1 (en) |
| GB (1) | GB1459290A (en) |
| IN (1) | IN140062B (en) |
| IT (1) | IT1027279B (en) |
| NL (1) | NL7416876A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018975A (en) * | 1975-03-21 | 1977-04-19 | Pennsylvania Engineering Corporation | Suspension means for electric furnace transformer secondary buses |
| US4153812A (en) * | 1977-10-21 | 1979-05-08 | Lectromelt Corporation | Bus bar assembly |
| DE3106827A1 (en) * | 1981-02-24 | 1982-09-09 | Fried. Krupp Gmbh, 4300 Essen | "ELECTRODE AND LADDER ARRANGEMENT OF A THREE-PHASE ARC FURNACE" |
| DE3808683C1 (en) * | 1988-03-11 | 1989-09-07 | Mannesmann Ag, 4000 Duesseldorf, De | |
| DE3814261A1 (en) * | 1988-04-27 | 1989-11-09 | Fuchs Systemtechnik Gmbh | Arc furnace having additional connectable reactance |
| IT1280159B1 (en) * | 1995-04-14 | 1998-01-05 | Danieli Off Mecc | SECONDARY CIRCUIT WITH VARIABLE IMPEDANCE FOR ELECTRIC ARC OVEN |
| FR2897482B1 (en) * | 2006-02-10 | 2010-10-29 | Cogema | DEVICE FOR TRANSPORTING ELECTRICITY WITH HIGH CURRENT AND HIGH FREQUENCY |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1386828A (en) * | 1920-09-16 | 1921-08-09 | Gen Electric | Windings for electrical apparatus |
| US3366725A (en) * | 1964-12-21 | 1968-01-30 | Watteredge Co | Balancing a three-phase power transmission system for an electric arc furnace |
-
1974
- 1974-07-23 US US491080A patent/US3898707A/en not_active Expired - Lifetime
- 1974-12-17 IN IN2768/CAL/74A patent/IN140062B/en unknown
- 1974-12-19 GB GB5492674A patent/GB1459290A/en not_active Expired
- 1974-12-24 NL NL7416876A patent/NL7416876A/en not_active Application Discontinuation
-
1975
- 1975-01-10 BR BR169/75A patent/BR7500169A/en unknown
- 1975-01-11 ES ES433734A patent/ES433734A1/en not_active Expired
- 1975-01-13 DE DE19752501106 patent/DE2501106A1/en not_active Withdrawn
- 1975-01-13 AT AT20575A patent/AT349770B/en not_active IP Right Cessation
- 1975-01-13 IT IT67058/75A patent/IT1027279B/en active
- 1975-01-13 JP JP565575A patent/JPS5737116B2/ja not_active Expired
- 1975-01-14 FR FR7501012A patent/FR2258075B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IN140062B (en) | 1976-09-04 |
| ES433734A1 (en) | 1976-12-01 |
| US3898707A (en) | 1975-08-12 |
| ATA20575A (en) | 1978-09-15 |
| FR2258075A1 (en) | 1975-08-08 |
| JPS5737116B2 (en) | 1982-08-07 |
| BR7500169A (en) | 1975-11-04 |
| FR2258075B1 (en) | 1982-03-05 |
| NL7416876A (en) | 1975-07-16 |
| DE2501106A1 (en) | 1975-07-17 |
| IT1027279B (en) | 1978-11-20 |
| AU7661374A (en) | 1976-06-24 |
| JPS50102944A (en) | 1975-08-14 |
| AT349770B (en) | 1979-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |