JPH01180670U - - Google Patents

Info

Publication number
JPH01180670U
JPH01180670U JP7208388U JP7208388U JPH01180670U JP H01180670 U JPH01180670 U JP H01180670U JP 7208388 U JP7208388 U JP 7208388U JP 7208388 U JP7208388 U JP 7208388U JP H01180670 U JPH01180670 U JP H01180670U
Authority
JP
Japan
Prior art keywords
voltage
detection means
voltage detection
phase power
phase
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
JP7208388U
Other languages
English (en)
Other versions
JPH0623967Y2 (ja
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 filed Critical
Priority to JP7208388U priority Critical patent/JPH0623967Y2/ja
Publication of JPH01180670U publication Critical patent/JPH01180670U/ja
Application granted granted Critical
Publication of JPH0623967Y2 publication Critical patent/JPH0623967Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Control Of Ac Motors In General (AREA)

Description

【図面の簡単な説明】
第１図はこの考案の一実施例の要部の結線図、
第２図ａおよび第２図ｂは動作原理の説明図、第
３図は制御の手順を示すフローチヤートである。 １……３相電源、４，５……フオトカプラ、４
ａ，５ａ……発光ダイオード、４ｂ，５ｂ……フ
オトトランジスタ、８，９……出力抵抗、１０…
…マイクロコンピユータ、１１……ＣＰＵ、１２
……ＲＯＭ、１３……ＲＡＭ。

Claims (1)

  1. 【実用新案登録請求の範囲】 ３相電源１の一つの電圧のいずれか一方の半サ
    イクルの立ち上がりを検出する第１の電圧検出手
    段と、 他の一つの電圧のいずれか一方の半サイクルの
    有無を検出する第２の電圧検出手段と、 第１の電圧検出手段で電圧の立ち上がりが検出
    されたときに第２の電圧検出手段で検出される電
    圧が有るか無いかにより相回転の方向を判定する
    判定手段とを備えたことを特徴とする３相電源の
    相回転検出装置。
JP7208388U 1988-05-30 1988-05-30 ３相電源の相回転検出装置 Expired - Lifetime JPH0623967Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7208388U JPH0623967Y2 (ja) 1988-05-30 1988-05-30 ３相電源の相回転検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7208388U JPH0623967Y2 (ja) 1988-05-30 1988-05-30 ３相電源の相回転検出装置

Publications (2)

Publication Number Publication Date
JPH01180670U true JPH01180670U (ja) 1989-12-26
JPH0623967Y2 JPH0623967Y2 (ja) 1994-06-22

Family

ID=31297261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7208388U Expired - Lifetime JPH0623967Y2 (ja) 1988-05-30 1988-05-30 ３相電源の相回転検出装置

Country Status (1)

Country Link
JP (1) JPH0623967Y2 (ja)

Also Published As

Publication number Publication date
JPH0623967Y2 (ja) 1994-06-22

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