JPS5445766A - Protective relay device - Google Patents

Protective relay device

Info

Publication number
JPS5445766A
JPS5445766A JP11214277A JP11214277A JPS5445766A JP S5445766 A JPS5445766 A JP S5445766A JP 11214277 A JP11214277 A JP 11214277A JP 11214277 A JP11214277 A JP 11214277A JP S5445766 A JPS5445766 A JP S5445766A
Authority
JP
Japan
Prior art keywords
voltage
check
current
power source
relay
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
JP11214277A
Other languages
Japanese (ja)
Inventor
Tokuo Ito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11214277A priority Critical patent/JPS5445766A/en
Publication of JPS5445766A publication Critical patent/JPS5445766A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To permit clecking of a distance relay without utilizing an imitated power transmission circuit by providing a relay contact for switching system voltage and check voltage and for applying check current and further by additionally proividing three-phase power source for checking use.
CONSTITUTION: A voltage input converter 4 and current input converter 3 are accommodated in a distance relay 1 with the distance measuring section 2 and three-phase power source 5 for checking use is connected through relay contact 6a through 1 to the system voltage. Assuming that an auxiliary relay 6 is operated by receiving the check instruction, the input of the voltage input converter 4 is disconnected from the system voltage by a normal closed contact 6b, next the voltage from the check power source 5 is applied by using a normal open contact 6a-1. On the other hand, the output Ls at the secondary side of a main transformer and check current ir are applied by check current ir and normal open contact 6a-2 to the current input converter 3. In such the circuit constitution, the impedance imitated test of the system can be achieved by utilizing the voltage and current from the check power source 5
COPYRIGHT: (C)1979,JPO&Japio
JP11214277A 1977-09-20 1977-09-20 Protective relay device Pending JPS5445766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11214277A JPS5445766A (en) 1977-09-20 1977-09-20 Protective relay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11214277A JPS5445766A (en) 1977-09-20 1977-09-20 Protective relay device

Publications (1)

Publication Number Publication Date
JPS5445766A true JPS5445766A (en) 1979-04-11

Family

ID=14579259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11214277A Pending JPS5445766A (en) 1977-09-20 1977-09-20 Protective relay device

Country Status (1)

Country Link
JP (1) JPS5445766A (en)

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