JPS54158647A - Grounded metering transformer - Google Patents
Grounded metering transformerInfo
- Publication number
- JPS54158647A JPS54158647A JP6792378A JP6792378A JPS54158647A JP S54158647 A JPS54158647 A JP S54158647A JP 6792378 A JP6792378 A JP 6792378A JP 6792378 A JP6792378 A JP 6792378A JP S54158647 A JPS54158647 A JP S54158647A
- Authority
- JP
- Japan
- Prior art keywords
- low
- transformer
- primary
- reactances
- phase
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To reduce normal loss by employing two reactors corresponding with secondary and thertiary loading determined on the bais of formula analysis in place of a resistor.
CONSTITUTION: Additional reactors 15, 16 having different reactances are connected in parallel with each of low-voltage relay, where the reactances are set in accordance with the reactances of two low-voltage relays 13 connected to the secondary of grounded metering transformer 1 and relat load of low power factor connected at the tertiary of transformer. One low-voltage relay can be functioned during the phase missing of any phase at the primary of transformer 1. In other word during primary phase-missing, any one of two line voltages out of three can be lowered below the setting level. Consequently the blown-off of primary fuse can be detected separately from the bus voltage drop where both line voltage drop. Furthermore the heat generation and power loss can be eliminated when compared with conventional detection of the blown-off of primary fuse where a resistor is employed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53067923A JPS6022569B2 (en) | 1978-06-06 | 1978-06-06 | Grounded instrument transformer device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53067923A JPS6022569B2 (en) | 1978-06-06 | 1978-06-06 | Grounded instrument transformer device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54158647A true JPS54158647A (en) | 1979-12-14 |
JPS6022569B2 JPS6022569B2 (en) | 1985-06-03 |
Family
ID=13358913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53067923A Expired JPS6022569B2 (en) | 1978-06-06 | 1978-06-06 | Grounded instrument transformer device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6022569B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6319379U (en) * | 1986-07-24 | 1988-02-08 |
-
1978
- 1978-06-06 JP JP53067923A patent/JPS6022569B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6022569B2 (en) | 1985-06-03 |
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