JPS5822048U - Frequency drop protection device - Google Patents

Frequency drop protection device

Info

Publication number
JPS5822048U
JPS5822048U JP11355881U JP11355881U JPS5822048U JP S5822048 U JPS5822048 U JP S5822048U JP 11355881 U JP11355881 U JP 11355881U JP 11355881 U JP11355881 U JP 11355881U JP S5822048 U JPS5822048 U JP S5822048U
Authority
JP
Japan
Prior art keywords
drop protection
frequency drop
relay
protection device
frequency
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
JP11355881U
Other languages
Japanese (ja)
Other versions
JPH0134522Y2 (en
Inventor
秀樹 筒井
成田　一豊
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to JP11355881U priority Critical patent/JPS5822048U/en
Publication of JPS5822048U publication Critical patent/JPS5822048U/en
Application granted granted Critical
Publication of JPH0134522Y2 publication Critical patent/JPH0134522Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の周波数低下保護装置の交流回路、第２図
は本考案による周波数低下保護装置の交流回路、第３図
は本考案による周波数低下保護装置の直流制御回路。 １・・・甲母線、２・・・乙母線、３．４・・・電圧変
成器、５・・・周波数低主保護継電器（９５）、６・・
・不足電圧継電器（２７Ｌ）、７．　７’・・・フェイ
ル・セーフ用周波数低下保護継電器（９５Ｆ）、８・・
・母線連絡用遮断器、９．１０・・・交流補助継電器、
１１．１２・・・キープ補助継電器、１３．１４・・・
直流制御電源母線。FIG. 1 shows an AC circuit of a conventional frequency drop protection device, FIG. 2 shows an AC circuit of a frequency drop protection device according to the present invention, and FIG. 3 shows a DC control circuit of a frequency drop protection device according to the present invention. 1... A bus line, 2... B bus line, 3.4... Voltage transformer, 5... Low frequency main protection relay (95), 6...
・Undervoltage relay (27L), 7. 7'... Fail-safe frequency drop protection relay (95F), 8...
・Busbar communication circuit breaker, 9.10...AC auxiliary relay,
11.12...Keep auxiliary relay, 13.14...
DC control power supply bus.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 異系統運用を行なわない２重母線系統の系統正常電圧状
態における周波数低下時に遮断指令を発する周波数低下
保護装置において、上記周波数低下保護装置は、周波数
低下保護継電器と、不足電圧継電器と、フェイル・セー
フ用周波数低下保護継電器と、切替回路とを夫々そなえ
、前記周波数低下保護継電器及び不足電圧継電器と、前
記フェイル・セーフ用周波数低下保護継電器とを夫々異
なる母線に接続すると共に、母線電圧の有無に応じて自
動切替することを特徴とする周波数低下保護装置。In a frequency drop protection device that issues a cutoff command when the frequency drops in a normal system voltage state of a double bus system that does not perform different system operation, the frequency drop protection device includes a frequency drop protection relay, an undervoltage relay, and a fail-safe relay. and a switching circuit, respectively, and connect the frequency drop protection relay, the undervoltage relay, and the fail-safe frequency drop protection relay to different bus bars, depending on the presence or absence of the bus voltage. A frequency drop protection device characterized by automatic switching.
JP11355881U 1981-07-30 1981-07-30 Frequency drop protection device Granted JPS5822048U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11355881U JPS5822048U (en) 1981-07-30 1981-07-30 Frequency drop protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11355881U JPS5822048U (en) 1981-07-30 1981-07-30 Frequency drop protection device

Publications (2)

Publication Number Publication Date
JPS5822048U true JPS5822048U (en) 1983-02-10
JPH0134522Y2 JPH0134522Y2 (en) 1989-10-20

Family

ID=29907856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11355881U Granted JPS5822048U (en) 1981-07-30 1981-07-30 Frequency drop protection device

Country Status (1)

Country Link
JP (1) JPS5822048U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63121421A (en) * 1986-11-06 1988-05-25 日新電機株式会社 System failure recording system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63121421A (en) * 1986-11-06 1988-05-25 日新電機株式会社 System failure recording system

Also Published As

Publication number Publication date
JPH0134522Y2 (en) 1989-10-20

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