JPH0210739U - - Google Patents

Info

Publication number
JPH0210739U
JPH0210739U JP8612688U JP8612688U JPH0210739U JP H0210739 U JPH0210739 U JP H0210739U JP 8612688 U JP8612688 U JP 8612688U JP 8612688 U JP8612688 U JP 8612688U JP H0210739 U JPH0210739 U JP H0210739U
Authority
JP
Japan
Prior art keywords
input
receives
shift circuit
ground fault
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.)
Pending
Application number
JP8612688U
Other languages
Japanese (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 JP8612688U priority Critical patent/JPH0210739U/ja
Publication of JPH0210739U publication Critical patent/JPH0210739U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Locating Faults (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例を示す回路図、第２
図は従来例の回路図である。 １…フイルター、２，４…増幅器、３…移相回
路、５…判別部、７…動作テストスイツチ、８…
発振器。 Figure 1 is a circuit diagram showing an embodiment of this invention, Figure 2 is a circuit diagram showing an embodiment of this invention.
The figure is a circuit diagram of a conventional example. DESCRIPTION OF SYMBOLS 1... Filter, 2, 4... Amplifier, 3... Phase shift circuit, 5... Discrimination part, 7... Operation test switch, 8...
oscillator.

Claims (1)

【実用新案登録請求の範囲】 零相電流を入力とするノイズ除去用のフイルタ
ーと、零相電圧を入力とし、位相特性を求めるた
めの移相回路と、前記フイルター、移相回路から
の出力を増幅する増幅器と。前記各増幅器からの
出力を入力とし、レベル、地絡方向を判定する判
定部を備えた地絡方向継電器において、 直流電源を動作電源とする発振器を設け、前記
発振器から発振される交流信号を、前記フイルタ
ー、移相回路に動作テスト用の模擬信号としてな
る地絡方向継電器用テスト装置。[Claims for Utility Model Registration] A noise removal filter that receives a zero-phase current as an input, a phase shift circuit that receives a zero-phase voltage as an input and determines phase characteristics, and outputs from the filter and the phase shift circuit. and an amplifier to amplify. A ground fault direction relay that receives outputs from each of the amplifiers as input and includes a determination unit that determines the level and direction of a ground fault, wherein an oscillator that uses a DC power source as an operating power source is provided, and an AC signal oscillated from the oscillator is A test device for a ground fault directional relay that serves as a simulated signal for testing the operation of the filter and phase shift circuit.
JP8612688U 1988-06-29 1988-06-29 Pending JPH0210739U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8612688U JPH0210739U (en) 1988-06-29 1988-06-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8612688U JPH0210739U (en) 1988-06-29 1988-06-29

Publications (1)

Publication Number Publication Date
JPH0210739U true JPH0210739U (en) 1990-01-23

Family

ID=31310771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8612688U Pending JPH0210739U (en) 1988-06-29 1988-06-29

Country Status (1)

Country Link
JP (1) JPH0210739U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107581A (en) * 1976-03-05 1977-09-09 Takaoka Electric Mfg Co Ltd Rotary switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656117A (en) * 1979-10-13 1981-05-18 Meidensha Electric Mfg Co Ltd Circuit for inspecting operation of relay

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656117A (en) * 1979-10-13 1981-05-18 Meidensha Electric Mfg Co Ltd Circuit for inspecting operation of relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107581A (en) * 1976-03-05 1977-09-09 Takaoka Electric Mfg Co Ltd Rotary switch

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