10/11/2023 0 Comments Boeing 737 cockpit signals➤ Configurability via software-based design ➤ ARINC 429 and Mil-Std-1553 data buses optional (Controller Area Network) standard (at no extra cost) Gests: provide distributed site (or remote) location and built-in testingĭissipation➤ Backup wire protection➤ Optional arc fault protection➤ Data bus UART ARINC 485, CAN This isĭesigned to yield circuit protection that does just what Evans sug. That can be installed on an aircraft, wherever they fit best. SSPCs into compact, microprocessor-controlled SPDU enclosures Performance-effective, SSPC-based, secondary distribution systemĪdopted by A380 and B787The company is focused on combining multichannel, next-generation Low impedance SPDUs since 1994, and hermetically sealed, thick-įilm hybrid SSPCs since 1986, Leach International sees a cost- and Tional SSPCs were used in the world’s first automated power man-Īgement systems on board the Lockheed C-130J and Bombardier (SPDUs) within its line of electronic equipment. Than 250,000 SSPCs and 1,000 secondary power distribution units Over 20 years the company has manufactured more National, a subsidiary of Esterline Corp., agrees with Evans’Īssessment. Of built-in test equipment to check wiring integrity in the ‘electricīuena Park, Calif.-based equipment provider, Leach Inter. Evans states that SSPCs “can serve the functional equivalent Tributed sites, where they are near relevant devices, yet outside theĬockpit. Other advantages he cites include SSPC configurability at dis. Evans is editor of Air Safety Week and a columnist for Total number of components needed for electrical power manage. SSPCs in electric architecture have the potential to reduce the Ogy by Boeing Phantom Works, David Evans makes the point that Integrating Electrical ManagementIn his report about development of new circuit protection technol. Per week in the United States on commercial aircraft. Industry sources report at least one “smoke in the cockpit” incident Ignored and the circuit assumed to be capable. On the overload, or even status information in some cases -whetherĪ switch has been turned on, off or tripped -the failure may be Since mostĬircuit breaker and relay systems offer little or no diagnostic data Sive charge on the circuit, the trip looks the same as if it had beenĬaused by a potentially dangerous overload condition. If a circuit protection system trips when there is no exces. The false positives for a circuit failure truly can be a complex Mechanical circuit may only trip when the more damaging surge Signal a genuine arc or overload in the making. Nuisance Trips Because of their thermal dependence, conventional circuit break-Įrs will not react to a mild arc fault, for example, one that could The aircraft designer to use smaller-gauge electrical cables. Further, since SSPCs are notĭependent on temperature changes, they can The response time of SSPCs is measured in Response time of electromechanical circuitīreakers is measured in milliseconds, while Weight savings over traditional circuit break-Īrc fault, is the faster response time. Mitted or received, SSPCs are more reliableĪnd accurate in detecting genuine faults and By using low-level electri-Ĭal signals that do not need protection, trans. Replace thermal/mechanical circuit breakerĪnd relay systems. Use since the mid-1980s and are designed to Therefore, to providing circuit, wiring andĭevice protection comes via solid state power Enter SSPCsTraditional circuit breakers are not designed
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |