JPS55129767A - Test unit for circuit breaker - Google Patents
Test unit for circuit breakerInfo
- Publication number
- JPS55129767A JPS55129767A JP3690779A JP3690779A JPS55129767A JP S55129767 A JPS55129767 A JP S55129767A JP 3690779 A JP3690779 A JP 3690779A JP 3690779 A JP3690779 A JP 3690779A JP S55129767 A JPS55129767 A JP S55129767A
- Authority
- JP
- Japan
- Prior art keywords
- current
- coil
- trip
- circuit
- simulated
- 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
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To enable to perform operation check simply without interrupting the conduction of load line, by limiting the supply of simulated current to the breaker before the operation of the trip coil through the detection of trip signal and making inoperative the trip coil.
CONSTITUTION: When the simulated current I is fed to the terminals TA, TB from the simulated current generation circuit 8, the current I is fed to the control circuit 3 via the detection current supply lines 16, 16'. When the circuit 3 is normally operated, the trip signal S is produced from the terminal 3a after the delay time. The thyristors 7 and 10a are triggered with the signal S. Since the trip coil 4 is an inductive load, time is required to finish the operation, most part of current I flows to the branch circuits 9 and 10 before the excitation of the coil 4, the current I and the current i2 flowing to the coil 4 are both reduced into almost no current. Further, this branch current dirves the display section 9 to display the normal operation of the circuit 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3690779A JPS55129767A (en) | 1979-03-30 | 1979-03-30 | Test unit for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3690779A JPS55129767A (en) | 1979-03-30 | 1979-03-30 | Test unit for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55129767A true JPS55129767A (en) | 1980-10-07 |
Family
ID=12482838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3690779A Pending JPS55129767A (en) | 1979-03-30 | 1979-03-30 | Test unit for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55129767A (en) |
-
1979
- 1979-03-30 JP JP3690779A patent/JPS55129767A/en active Pending
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