GR1008066B - An imroved power transformer with vacuum type on load tap changer (oltc) operable at an oil-head exceeding ten meters - Google Patents
An imroved power transformer with vacuum type on load tap changer (oltc) operable at an oil-head exceeding ten metersInfo
- Publication number
- GR1008066B GR1008066B GR20130100026A GR20130100026A GR1008066B GR 1008066 B GR1008066 B GR 1008066B GR 20130100026 A GR20130100026 A GR 20130100026A GR 20130100026 A GR20130100026 A GR 20130100026A GR 1008066 B GR1008066 B GR 1008066B
- Authority
- GR
- Greece
- Prior art keywords
- oltc
- oil
- meters
- tap changer
- load tap
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
-
- 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
-
- 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
- H01H9/0005—Tap change devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to an improved power transformer with vacuum type on load tap changer (OLTC) operable at an oil-head exceeding ten meters, comprising a magnetic core, a high-voltage (HV) winding, a set of a low-voltage (LV) winding, a transformer tank, and a vacuum type on load tap changer (OLTC); and a conservator (C) disposed at a height exceeding ten meters above the transformer tank, the transformer tank is configured into two halves, the first half accommodating the magnetic core-coil assembly and the second half housing the vacuum OLTC, the two halves being separated by a steel waif (W) having a plurality of cut-outs, the cut-outs provided with insulated terminal board (TB) with corresponding numbers of terminal bushings (B) allowing connection between the coils and the OLTC, and in that the second half is smaller in size than the first half and provided with an auxiliary, conservator (AC) leading to maintaining of oil-head pressure on the vacuum OLTC is the range of 0.1 kg sqxm which is equivalent to 1 meter oil head.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN322KO2012 | 2012-03-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
GR20130100026A GR20130100026A (en) | 2013-10-15 |
GR1008066B true GR1008066B (en) | 2013-12-18 |
Family
ID=48808393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR20130100026A GR1008066B (en) | 2012-03-22 | 2013-01-18 | An imroved power transformer with vacuum type on load tap changer (oltc) operable at an oil-head exceeding ten meters |
Country Status (1)
Country | Link |
---|---|
GR (1) | GR1008066B (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE412139B (en) * | 1978-06-16 | 1980-02-18 | Asea Ab | TRANSFORMER WITH WINDING COUPLES |
JPS556801A (en) * | 1978-06-28 | 1980-01-18 | Hitachi Ltd | Oil-filled electrical apparatus |
JPH07142267A (en) * | 1993-11-17 | 1995-06-02 | Toshiba Corp | Transformer provided with on-load tap changer |
CN101383222B (en) * | 2008-02-26 | 2010-06-23 | 上海华明电力设备制造有限公司 | Externally hanging combined loaded tap-changer |
EP2264729A1 (en) * | 2009-06-18 | 2010-12-22 | ABB Technology Ltd | Method and device for detecting failure of a vacuum interrupter of an on load tap changer |
-
2013
- 2013-01-18 GR GR20130100026A patent/GR1008066B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
GR20130100026A (en) | 2013-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PG | Patent granted |
Effective date: 20140124 |