GB621721A - Improvements in and relating to electric induction apparatus - Google Patents
Improvements in and relating to electric induction apparatusInfo
- Publication number
- GB621721A GB621721A GB11146/47A GB1114647A GB621721A GB 621721 A GB621721 A GB 621721A GB 11146/47 A GB11146/47 A GB 11146/47A GB 1114647 A GB1114647 A GB 1114647A GB 621721 A GB621721 A GB 621721A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- winding
- terminals
- insulation
- windings
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
621,721. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. April 25, 1947, No. 11146. Convention date, April 27, 1946. [Class 38 (ii)] A transformer or other induction apparatus comprises a core with a leg which carries a winding on a spool, a multiple strip conductor winding with stepped ends interfitting with complementary surfaces on terminal members, and a terminal board including a pivoted link for short-circuiting the winding on the spool, and a reversible cover enclosing the terminal board. The taped primary winding 2 comprises two S-bent strips 5, 6 with ends of unequal lengths forming stepped surfaces brazed to complementary stepped surfaces on terminals 7, 8. The middle of the S passes through the window of a rectangular core which is made from two U-shaped members consisting of flatwise-bent magnetic laminations, as described in Specification 621,679. Secondary windings 3, 4 are wound on spools 10, each consisting of two, similar, overlapping channel-shaped pieces of pressboard, which allow fitting to cores of different cross-sections. Insulation between windings and core is completed by flanges 12 and extensions 13 on the spools, and insulation 23 round the core yoke holding insulation in place under the yoke. The core is held in place by a binding strip 27 which extends round the core and is welded at each end 29 to a bracket 26, in which the bottom core yoke is located. Two compensating windings pass through a hole 16 in the core, one being a single shortcircuited turn 19 and the other a multi-turn winding 17 connected between the two secondary coils 3, 4. An insulating cover comprising two concave parts 31, 32 and a central band 35 is bolted to bracket 26 and held together at its upper end by conducting strips which connect the ends of the secondary windings with terminals in a chamber enclosed by a cover 42 which must be placed in one of two positions according as to whether or not the terminals are short-circuited by a swivelling link inside the chamber. The casing may be compound. filled.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US621721XA | 1946-04-27 | 1946-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB621721A true GB621721A (en) | 1949-04-14 |
Family
ID=22040663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11146/47A Expired GB621721A (en) | 1946-04-27 | 1947-04-25 | Improvements in and relating to electric induction apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB621721A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103050247A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Clamp-free transformer winding and binding method thereof |
-
1947
- 1947-04-25 GB GB11146/47A patent/GB621721A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103050247A (en) * | 2012-12-27 | 2013-04-17 | 吴江市变压器厂有限公司 | Clamp-free transformer winding and binding method thereof |
CN103050247B (en) * | 2012-12-27 | 2015-10-28 | 吴江变压器有限公司 | A kind of Transformer Winding without folder and binding method thereof |
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