JPS5288748A - Protecting process for ward leonard circuit - Google Patents

Protecting process for ward leonard circuit

Info

Publication number
JPS5288748A
JPS5288748A JP498576A JP498576A JPS5288748A JP S5288748 A JPS5288748 A JP S5288748A JP 498576 A JP498576 A JP 498576A JP 498576 A JP498576 A JP 498576A JP S5288748 A JPS5288748 A JP S5288748A
Authority
JP
Japan
Prior art keywords
circuit
protecting process
ward leonard
leonard circuit
contactor
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
Application number
JP498576A
Other languages
Japanese (ja)
Inventor
Shunichiro Hayase
Toshiaki Kurosawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP498576A priority Critical patent/JPS5288748A/en
Publication of JPS5288748A publication Critical patent/JPS5288748A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Direct Current Motors (AREA)
  • Synchronous Machinery (AREA)

Abstract

PURPOSE: To prevent an armature circuit from the flow of overcurrent at the time of power failure by constituting that a parallel circuit of a resistor and a contactor are connected in series to a field circuit, to open the contactor at the time of power failure and to connect the resistor in series to the field circuit.
COPYRIGHT: (C)1977,JPO&Japio
JP498576A 1976-01-21 1976-01-21 Protecting process for ward leonard circuit Pending JPS5288748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP498576A JPS5288748A (en) 1976-01-21 1976-01-21 Protecting process for ward leonard circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP498576A JPS5288748A (en) 1976-01-21 1976-01-21 Protecting process for ward leonard circuit

Publications (1)

Publication Number Publication Date
JPS5288748A true JPS5288748A (en) 1977-07-25

Family

ID=11598888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP498576A Pending JPS5288748A (en) 1976-01-21 1976-01-21 Protecting process for ward leonard circuit

Country Status (1)

Country Link
JP (1) JPS5288748A (en)

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