JPS54113050A - Overcurrent relay - Google Patents

Overcurrent relay

Info

Publication number
JPS54113050A
JPS54113050A JP1968378A JP1968378A JPS54113050A JP S54113050 A JPS54113050 A JP S54113050A JP 1968378 A JP1968378 A JP 1968378A JP 1968378 A JP1968378 A JP 1968378A JP S54113050 A JPS54113050 A JP S54113050A
Authority
JP
Japan
Prior art keywords
relay
output
current
secondary winding
current transformer
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
JP1968378A
Other languages
Japanese (ja)
Inventor
Hiroshi Ando
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 JP1968378A priority Critical patent/JPS54113050A/en
Publication of JPS54113050A publication Critical patent/JPS54113050A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain time-limit characteristics by the procedure in which the secondary winding of current transformer in which relay is built is lessened and the relation between input current and output voltage is made saturated.
CONSTITUTION: An input current is introduced into the input treminal. The relay- built-in current transformer 1 is provided and then its secondary winding is connected to the resistor 2. A minimum operating current is settled by settling 3 relay. And, the starting device 5 is provided so that when the settled value is exceeded, rectified voltage corresponding to input current is charged in the integrating circuit 4. And, the level detector 6 sending out output when the output of the integrating circuit 4 reaches a predetermined value is provided and the supplementaty relay is driven or indicator is lightened by the output of the level detector 6. By selecting the core sectional area of the current transformer 1, the material of the core, and the winding number of secondary winding alike, saturating characteristics can be drawn out and predetermined time limit curve can thus be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP1968378A 1978-02-24 1978-02-24 Overcurrent relay Pending JPS54113050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1968378A JPS54113050A (en) 1978-02-24 1978-02-24 Overcurrent relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1968378A JPS54113050A (en) 1978-02-24 1978-02-24 Overcurrent relay

Publications (1)

Publication Number Publication Date
JPS54113050A true JPS54113050A (en) 1979-09-04

Family

ID=12006025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1968378A Pending JPS54113050A (en) 1978-02-24 1978-02-24 Overcurrent relay

Country Status (1)

Country Link
JP (1) JPS54113050A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111026U (en) * 1980-12-26 1982-07-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57111026U (en) * 1980-12-26 1982-07-09

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