JPS6460201A - Controller for electric rolling stock - Google Patents
Controller for electric rolling stockInfo
- Publication number
- JPS6460201A JPS6460201A JP21249887A JP21249887A JPS6460201A JP S6460201 A JPS6460201 A JP S6460201A JP 21249887 A JP21249887 A JP 21249887A JP 21249887 A JP21249887 A JP 21249887A JP S6460201 A JPS6460201 A JP S6460201A
- Authority
- JP
- Japan
- Prior art keywords
- current
- flashover
- change rate
- accident
- armature
- 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
Abstract
PURPOSE:To detect a flashover generated not only at the time of power running but also at the time of dynamic braking operation, and prevent its damage from being increased, by breaking a power circuit when the change rate of armature current exceeds a specified limit value. CONSTITUTION:When a flashover accident is generated under dynamic braking operation, then as shown by a broken line in figure,flashover current IF flows, and current to flow to a braking resistor 5 is short-circuited. Accordingly, the absolute value of accident current IT to flow to an armature current change rate detector 10 is reduced, and a current change rate dI/dt is a positive value and exceeds the limit value of 25,000A/sec, and 10msec or more is continuously kept,and so the change rate detector 10 is worked, and contactors 8 and 7 are interrupted. Then, a power circuit is interrupted, and field current If is set to be zero, and the induced voltage of an armature 3 is turned into nothing, and the flashover is canceled, and the accident is prevented from being increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21249887A JPS6460201A (en) | 1987-08-26 | 1987-08-26 | Controller for electric rolling stock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21249887A JPS6460201A (en) | 1987-08-26 | 1987-08-26 | Controller for electric rolling stock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6460201A true JPS6460201A (en) | 1989-03-07 |
JPH0461562B2 JPH0461562B2 (en) | 1992-10-01 |
Family
ID=16623658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21249887A Granted JPS6460201A (en) | 1987-08-26 | 1987-08-26 | Controller for electric rolling stock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6460201A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5321375A (en) * | 1992-11-30 | 1994-06-14 | Motorola, Inc. | RF crossover network |
-
1987
- 1987-08-26 JP JP21249887A patent/JPS6460201A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5321375A (en) * | 1992-11-30 | 1994-06-14 | Motorola, Inc. | RF crossover network |
Also Published As
Publication number | Publication date |
---|---|
JPH0461562B2 (en) | 1992-10-01 |
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