JPS5293175A - Rotation speed detecting device for hydroextractor - Google Patents

Rotation speed detecting device for hydroextractor

Info

Publication number
JPS5293175A
JPS5293175A JP967276A JP967276A JPS5293175A JP S5293175 A JPS5293175 A JP S5293175A JP 967276 A JP967276 A JP 967276A JP 967276 A JP967276 A JP 967276A JP S5293175 A JPS5293175 A JP S5293175A
Authority
JP
Japan
Prior art keywords
hydroextractor
rotation speed
detecting device
speed detecting
induced voltage
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
JP967276A
Other languages
Japanese (ja)
Inventor
Takeshi Fukuchi
Kazuichi Ikegami
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 JP967276A priority Critical patent/JPS5293175A/en
Publication of JPS5293175A publication Critical patent/JPS5293175A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a rotation speed detecting device for a hydroextractor. The rotation speed of the hydroextractor is determined from induced voltage which is generated at starting windings of an single-phase induction motor of the hydroextractor. The induced voltage is in proportion to the rotation speed of a rotor.
COPYRIGHT: (C)1977,JPO&Japio
JP967276A 1976-01-30 1976-01-30 Rotation speed detecting device for hydroextractor Pending JPS5293175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP967276A JPS5293175A (en) 1976-01-30 1976-01-30 Rotation speed detecting device for hydroextractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP967276A JPS5293175A (en) 1976-01-30 1976-01-30 Rotation speed detecting device for hydroextractor

Publications (1)

Publication Number Publication Date
JPS5293175A true JPS5293175A (en) 1977-08-05

Family

ID=11726686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP967276A Pending JPS5293175A (en) 1976-01-30 1976-01-30 Rotation speed detecting device for hydroextractor

Country Status (1)

Country Link
JP (1) JPS5293175A (en)

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