JPS5457139A - Secondary winding shortage accident detector for network transformer - Google Patents
Secondary winding shortage accident detector for network transformerInfo
- Publication number
- JPS5457139A JPS5457139A JP12374777A JP12374777A JPS5457139A JP S5457139 A JPS5457139 A JP S5457139A JP 12374777 A JP12374777 A JP 12374777A JP 12374777 A JP12374777 A JP 12374777A JP S5457139 A JPS5457139 A JP S5457139A
- Authority
- JP
- Japan
- Prior art keywords
- accident
- current
- secondary winding
- network transformer
- power factor
- 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
- Supply And Distribution Of Alternating Current (AREA)
Abstract
PURPOSE: To enable detection of the secondary winding shortage accident for a network transformer regardless of the amplitude of the current in the accident by detecting the occurrence of the accident by the power factor of the current.
CONSTITUTION: Since the respective power factor relays 6-1 to 6-2 and network protector reverse current breakage are correlated at timing, a network protector connected to the accident circuit detects the reverse current to thereby trip with a protector breaker PC-11. Then, the accident currents if2, if3 are vanished to flow only the accident current if1, which is monitored by the relay 6-1 for detecting that the value of the delayed power factor of the accident circuit reaches less than predetermined value to thereby detect the secondary winding accident shortage of the network transformer NT-11 so as to generate a trip command to the corresponding primary feeder breaker 3-1 in order to thereby disconnect the accident point from the system
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12374777A JPS5457139A (en) | 1977-10-14 | 1977-10-14 | Secondary winding shortage accident detector for network transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12374777A JPS5457139A (en) | 1977-10-14 | 1977-10-14 | Secondary winding shortage accident detector for network transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457139A true JPS5457139A (en) | 1979-05-08 |
Family
ID=14868315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12374777A Pending JPS5457139A (en) | 1977-10-14 | 1977-10-14 | Secondary winding shortage accident detector for network transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457139A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013027072A (en) * | 2011-07-15 | 2013-02-04 | Kyocera Corp | Power control apparatus and power control method |
-
1977
- 1977-10-14 JP JP12374777A patent/JPS5457139A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013027072A (en) * | 2011-07-15 | 2013-02-04 | Kyocera Corp | Power control apparatus and power control method |
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