The Differences and Advantages of SSPC and Circuit Breaker - [Wekeway] - Circuit Design Scheme for All Electric Aircraft
Solid state power controller (SSPC) is a solid-state switch control unit, not a circuit breaker. thatDifferences and advantages between SSPC and circuit breakersWhat are there? Below, the editor will analyze and present them one by one.
The functions of SSPC include the following:
Start from the aircraft power input through the D-sub connector.
Input coverage signal 1 from the operation panel and turn on/off the power.
Input signal coverage from power supply No.2.
Power outage with overload detection function
High design flexibility with lifting control function and extensive functional expansion
For example, the power distribution status and overall power management can be displayed on the operation panel, and remote control can be performed.
Advantages of SSPC
1. Size and weight
① Volume; Less than half, weighing 30% -50% of the C/B size (refer to size chart)
② There are no restrictions on the material of the casing.
③ Power and volume density; SSPC:CB=7：1*， Power and weight density; SSPC: CB=5:1 * Same unit volume, able to control and protect a larger number of circuits and single circuit capacity, reducing the probability of mechanical contact failure.
2. Reliability
① Fast overload protection, fast short circuit protection
② Minimum loss switching with controlled start and stop
3. Maintainability and flexibility
① Long life, resistant to cabinet, oxidation, corrosion, welding and other moving parts
② The impact of contact bounce and vibration on performance failure is relatively small
③ The mean time between failures (MTBF) has been greatly improved, and the system's operating rate has also been greatly enhanced
④ Hardware standardization, software modification personalization
4. Scalability
① Data bus access and network access, as well as real-time feedback of load status.
Can remotely monitor status signals (on/off)
Can monitor the status of all loads.
② High degree of freedom coverage signal
Discrete (on/off) signal control, load device switching
Communication (input from higher-level equipment)