BUS Protection
Quad BUS Protection Unit
The QBPU is the newest and most capable Bus Protection Unit offered by Silver Engineering, Inc. The “BUS” refers to a spacecraft or payload’s power distribution BUS. The BPU is designed to provide voltage and current protection to critical and expensive spacecraft/payload equipment during test and integration activities.
Typically during test and integration, spacecraft are powered by commercial rack mounted power supplies that are connected to an AC power source. The supplies are configured and controlled via Ethernet or manually. A software glitch or power supply failure could attempt to supply out-of-range voltage to the spacecraft. Also, a fault condition on the spacecraft could load down the power BUS and draw excessive current. The QBPU monitors these conditions and disconnects the power source from the spacecraft or payload.
Typically during test and integration, spacecraft are powered by commercial rack mounted power supplies that are connected to an AC power source. The supplies are configured and controlled via Ethernet or manually. A software glitch or power supply failure could attempt to supply out-of-range voltage to the spacecraft. Also, a fault condition on the spacecraft could load down the power BUS and draw excessive current. The QBPU monitors these conditions and disconnects the power source from the spacecraft or payload.