JPS6460201A - Controller for electric rolling stock - Google Patents

Controller for electric rolling stock

Info

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
Application number
JP21249887A
Other languages
Japanese (ja)
Other versions
JPH0461562B2 (en
Inventor
Tatsumi Hanamitsu
Takaaki Nosaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Electric Manufacturing Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP21249887A priority Critical patent/JPS6460201A/en
Publication of JPS6460201A publication Critical patent/JPS6460201A/en
Publication of JPH0461562B2 publication Critical patent/JPH0461562B2/ja
Granted legal-status Critical Current

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.
JP21249887A 1987-08-26 1987-08-26 Controller for electric rolling stock Granted JPS6460201A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321375A (en) * 1992-11-30 1994-06-14 Motorola, Inc. RF crossover network

Cited By (1)

* Cited by examiner, † Cited by third party
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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