Abstract A grounding system for aircraft refuelling apparatus comprises a grounding lead with first and second wires for carrying an electrical signal. A controller is connected to the lead and to a fuel pump of the apparatus. The controller causes the fuel pump to operate only when an electrical circuit is completed between the wires causing the electrical signal to flow between the wires. A plug on the lead comprises a pin for mating with a socket at an earthing point on an aircraft. The pin comprises a tip and sleeve connected to the first and second wires respectively. The tip and sleeve are electrically insulated from each other and bear against an electrical conductor in the socket to complete the circuit when the pin enters the socket. A power limiting device limits a voltage and current of the electrical signal flowing between the wires to keep the plug intrinsically safe.
GROUNDING SYSTEM FOR AIRCRAFT REFUELLING APPARATUS
2024-07-25
Patent
Electronic Resource
English
IPC: | H01R Elektrisch leitende Verbindungen , ELECTRICALLY-CONDUCTIVE CONNECTIONS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B67D Ausschenken, Abgeben oder Überleiten von Flüssigkeiten, soweit nicht anderweitig vorgesehen , DISPENSING, DELIVERING, OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H05F STATIC ELECTRICITY , Statische Elektrizität |