NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Solid state power controllersSolid state power controllers (SSPC's) are to be considered for use as replacements of electromechanical relays and circuit breakers in future spacecraft and aircraft. They satisfy the combined function of both the relay and circuit breaker and can be remotely controlled by small signals, typically 10 mA, 5 to 28 v(dc). They have the advantage over conventional relay/circuit breaker systems in that they can be located near the utilization equipment and the primary ac or dc bus. The low level control, trip indication and status signals can be circuited by small gauge wire for control, computer interface, logic, electrical multiplexing, onboard testing, power management, and distribution purposes. This results in increased system versatility at appreciable weight saving and increased reliability. Conventional systems require the heavy gage load wiring and the control wiring to be routed from the bus to the load to other remote relay contacts, switches, sensors, etc. and to the circuit breaker located in the flight engineer's compartment for purposes of manual reset.
Document ID
19740027161
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Gibbs, R. S.
(Teledyne Relays Santa Monica, CA, United States)
Date Acquired
August 7, 2013
Publication Date
March 1, 1974
Publication Information
Publication: NASA. Lyndon B. Johnson Space Center In-Line Task 57
Subject Category
Electronic Equipment
Accession Number
74N35274
Funding Number(s)
CONTRACT_GRANT: NAS9-12914
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available