JPS5646438A - High-temperature position indicating alarm device - Google Patents

High-temperature position indicating alarm device

Info

Publication number
JPS5646438A
JPS5646438A JP12207979A JP12207979A JPS5646438A JP S5646438 A JPS5646438 A JP S5646438A JP 12207979 A JP12207979 A JP 12207979A JP 12207979 A JP12207979 A JP 12207979A JP S5646438 A JPS5646438 A JP S5646438A
Authority
JP
Japan
Prior art keywords
ammeter
fire
alarm
series
area
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
JP12207979A
Other languages
Japanese (ja)
Inventor
Jiyouji Koide
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 JP12207979A priority Critical patent/JPS5646438A/en
Publication of JPS5646438A publication Critical patent/JPS5646438A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure an indication for the area of a fire, by distributing the temperature detectors in series which are open-circuit when the ambient temperature exceeds the set level plus several units of resistance in parallel respectively and furthermore providing an ammeter in series to the temperature detector at the power supply input side plus an alarm and a no-voltage detection relay at the output side respectively.
CONSTITUTION: The power source is connected to the terminal 1 and 2 each, and then the temperature detectors F1WFn which are open-circuit when the ambient temperature of the bimetal, the fuse or the like exceeds the set level are connected in series via the breaker 4 and the ammeter 5 along with the resistors R1WRn connected in parallel respectively. The no-voltage detection relay 8 is connected to the output terminal via the contact 6 to give the force to the alarm 7, and the power supply pilot lamp 9 is connected to the auxiliary contact 3 of the breaker 4, In the normal state, the current iA flows to each of resistances R1WRn, and thus the ammeter 5 displays the niA. And in case a fire breaks at the n-th unit, the display is changed to the (n-1)iA to show the area of the fire. At the same time, the alarm 7 is actuated via the relay 8 and the contact 6. In this way, the area of a fire is indicated to the ammeter 5.
COPYRIGHT: (C)1981,JPO&Japio
JP12207979A 1979-09-25 1979-09-25 High-temperature position indicating alarm device Pending JPS5646438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12207979A JPS5646438A (en) 1979-09-25 1979-09-25 High-temperature position indicating alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12207979A JPS5646438A (en) 1979-09-25 1979-09-25 High-temperature position indicating alarm device

Publications (1)

Publication Number Publication Date
JPS5646438A true JPS5646438A (en) 1981-04-27

Family

ID=14827129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12207979A Pending JPS5646438A (en) 1979-09-25 1979-09-25 High-temperature position indicating alarm device

Country Status (1)

Country Link
JP (1) JPS5646438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490601B1 (en) * 2001-02-01 2005-05-19 캐논 가부시끼가이샤 Abnormality detection method and protection apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490601B1 (en) * 2001-02-01 2005-05-19 캐논 가부시끼가이샤 Abnormality detection method and protection apparatus

Similar Documents

Publication Publication Date Title
GB1012068A (en) Environmental responsive apparatus
US4227145A (en) Apparatus for detecting faults in electric cables
ATE30998T1 (en) ELECTRICAL MONITORING SYSTEMS.
US3160866A (en) Electric alarm system
JPS5646438A (en) High-temperature position indicating alarm device
JPS578421A (en) Flame detector
US2448026A (en) Electrical detecting circuit and device for testing the same
GB1065338A (en) Fire detection circuit
US3696367A (en) Ground fault detection circuit
GB779282A (en) Self-resetting electrical network automatically responsive to a condition
US4081854A (en) Meter protection circuit
JPS5540958A (en) Improper contact detector for switch unit
GB934670A (en) Salinity indicating system with automatic temperature compensation including alarm
US3623050A (en) Electric source devices for fire alarm systems
GB1590946A (en) Cable testing apparatus
US2832069A (en) Circuit continuity indicator
JPS5487834A (en) Protective device for on-load tap changer
GB961145A (en) Fire detection systems
SU702449A1 (en) Device for protecting several three-phase users against damage
JPS5481799A (en) Conduction test circuit of fire alarm
SU1001134A1 (en) Multipoint indication device
JPS548845A (en) Phase-lack protection device
JPS5599436A (en) Fault checker in alarming device for car
GB609745A (en) Improvements in and relating to fuse switches
JPS5679908A (en) Analog indicator