JPS54161043A - Overload protection device for transformer - Google Patents
Overload protection device for transformerInfo
- Publication number
- JPS54161043A JPS54161043A JP6952878A JP6952878A JPS54161043A JP S54161043 A JPS54161043 A JP S54161043A JP 6952878 A JP6952878 A JP 6952878A JP 6952878 A JP6952878 A JP 6952878A JP S54161043 A JPS54161043 A JP S54161043A
- Authority
- JP
- Japan
- Prior art keywords
- load
- transformer
- value
- combination power
- powers
- 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.)
- Pending
Links
Landscapes
- Protection Of Transformers (AREA)
Abstract
PURPOSE: To disconnect a load rapidly and properly by forming all possible load combination power values by an electrical means, comparing the values with a reference value, and determining the load to be disconnected.
CONSTITUTION: An overload detection unit F comprises an integration circuit SK resembling the overload characteristic of a transformer, integrates transformer feed powers PB1, PB2..., and generates an overload detection signal FSK when the integrated value is within a predetermined working range. A selection arithmetic unit E is fed with load powers P1, P2... as inputs, compares the load combination power values with a predetermined transformer allowable-load reference value PR by means of a comparator, finds out the load combination power value which is over and nearest to the value PR, and disconnects the relevant load.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6952878A JPS54161043A (en) | 1978-06-09 | 1978-06-09 | Overload protection device for transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6952878A JPS54161043A (en) | 1978-06-09 | 1978-06-09 | Overload protection device for transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54161043A true JPS54161043A (en) | 1979-12-20 |
Family
ID=13405304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6952878A Pending JPS54161043A (en) | 1978-06-09 | 1978-06-09 | Overload protection device for transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161043A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4772978A (en) * | 1985-10-14 | 1988-09-20 | Hitachi, Ltd. | Transformer protection system |
-
1978
- 1978-06-09 JP JP6952878A patent/JPS54161043A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4772978A (en) * | 1985-10-14 | 1988-09-20 | Hitachi, Ltd. | Transformer protection system |
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