JPS63124800A - Overcurrent protective device for exciting circuit of rotary electric machine - Google Patents
Overcurrent protective device for exciting circuit of rotary electric machineInfo
- Publication number
- JPS63124800A JPS63124800A JP61269666A JP26966686A JPS63124800A JP S63124800 A JPS63124800 A JP S63124800A JP 61269666 A JP61269666 A JP 61269666A JP 26966686 A JP26966686 A JP 26966686A JP S63124800 A JPS63124800 A JP S63124800A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- thyristor
- comparator
- signal
- 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
- 230000001681 protective Effects 0.000 title 1
- 238000002844 melting Methods 0.000 abstract 1
Abstract
PURPOSE: To protect a thyristor exciter from overcurrents even when a short circuit is generated in any section of an exciting circuit by mounting a current detector on the input side of the thyristor exciter.
CONSTITUTION: A current transformer 20 detects input currents to a thyristor exciter 6. When the input currents are higher than a set value, a signal is output from a comparator 22. When field voltage is lower than a set value, on the other hand, a signal is output from a comparator 23. When signals are output from both thc comparators 22, 23, a signal is output from a comparator 24. Con sequently, a circuit interrupting field currents is constituted in a logic circuit 25, and a gate shift for the thyristor exciter 6 and a field circuit breaker are interrupted. Accordingly, even when a closed-circuit failure is generated in any position of an exciting circuit, the thyristor exciter can be protected without damaging a thyristor and melting a quick fusing fuse.
COPYRIGHT: (C)1988,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61269666A JPS63124800A (en) | 1986-11-14 | 1986-11-14 | Overcurrent protective device for exciting circuit of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61269666A JPS63124800A (en) | 1986-11-14 | 1986-11-14 | Overcurrent protective device for exciting circuit of rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63124800A true JPS63124800A (en) | 1988-05-28 |
Family
ID=17475518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61269666A Pending JPS63124800A (en) | 1986-11-14 | 1986-11-14 | Overcurrent protective device for exciting circuit of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63124800A (en) |
-
1986
- 1986-11-14 JP JP61269666A patent/JPS63124800A/en active Pending
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