FR2592172A1 - System for the detection and warning of dangerous voltages on vehicles operating on construction sites - Google Patents

System for the detection and warning of dangerous voltages on vehicles operating on construction sites

Info

Publication number
FR2592172A1
FR2592172A1 FR8515781A FR8515781A FR2592172A1 FR 2592172 A1 FR2592172 A1 FR 2592172A1 FR 8515781 A FR8515781 A FR 8515781A FR 8515781 A FR8515781 A FR 8515781A FR 2592172 A1 FR2592172 A1 FR 2592172A1
Authority
FR
France
Prior art keywords
contact
circuit
relay
current
alarm
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
FR8515781A
Other languages
French (fr)
Other versions
FR2592172B1 (en
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.)
SENLANNE DESTENAVE ALBERT
Original Assignee
SENLANNE DESTENAVE ALBERT
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 SENLANNE DESTENAVE ALBERT filed Critical SENLANNE DESTENAVE ALBERT
Priority to FR8515781A priority Critical patent/FR2592172B1/en
Publication of FR2592172A1 publication Critical patent/FR2592172A1/en
Application granted granted Critical
Publication of FR2592172B1 publication Critical patent/FR2592172B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/155—Indicating the presence of voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Alarm Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The system uses an electromechanical method for indicating the presence of dangerous abnormal voltages on machines operating on construction sites produced by inadvertent contact with a source of current. The device, shown in the diagram, operates by the activation of an alarm signal when a current is detected. The primary of a toroidal relay 1 is placed in series in an earthing circuit, whose earth contact is provided by a chain 2. When the leakage current due to the contact of the machine with a voltage source passes through the 15 to 30 MA winding, the contact 3 and 1, 9 is opened, cutting off the supply to the relay 4. The contact of the relay 4 drops out, supplying the alarm systems 8 and 9 and the fault indicator 7. These alarm systems may be stopped by the circuit breaker 10. When anything unusual occurs, the fault indicator lamp remains on. The correct operation of the circuit may be tested by actuating the push button 5 which, through the resistor 6, will cause a current to pass through the toroidal circuit, thus triggering the alarm.
FR8515781A 1985-10-15 1985-10-15 HAZARDOUS VOLTAGE DETECTION AND ALARM SYSTEM ON CONSTRUCTION VEHICLES Expired FR2592172B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8515781A FR2592172B1 (en) 1985-10-15 1985-10-15 HAZARDOUS VOLTAGE DETECTION AND ALARM SYSTEM ON CONSTRUCTION VEHICLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8515781A FR2592172B1 (en) 1985-10-15 1985-10-15 HAZARDOUS VOLTAGE DETECTION AND ALARM SYSTEM ON CONSTRUCTION VEHICLES

Publications (2)

Publication Number Publication Date
FR2592172A1 true FR2592172A1 (en) 1987-06-26
FR2592172B1 FR2592172B1 (en) 1988-02-19

Family

ID=9324145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8515781A Expired FR2592172B1 (en) 1985-10-15 1985-10-15 HAZARDOUS VOLTAGE DETECTION AND ALARM SYSTEM ON CONSTRUCTION VEHICLES

Country Status (1)

Country Link
FR (1) FR2592172B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296494A (en) * 1963-06-24 1967-01-03 Jr Andrew Stenger Voltage responsive devices and methods of voltage detection

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296494A (en) * 1963-06-24 1967-01-03 Jr Andrew Stenger Voltage responsive devices and methods of voltage detection

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
THE ENGINEER, vol. 221, no. 5758, 3 juin 1966, page 864, Londres, GB; "Live cable detector for cranes" *
TOUTE L'ELECTRONIQUE, août-septembre 1972, pages 32-35, Paris, FR; M.OULES: "Système d'alarme anti-électrocution" *

Also Published As

Publication number Publication date
FR2592172B1 (en) 1988-02-19

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Legal Events

Date Code Title Description
ST Notification of lapse