02/24/2023
SeaView just completed this custom surface and subsea power supply and 5km tether for a Seaeye Falcon belonging to a client in China. Prior to this, the longest tether I've run a Falcon on was 3km and while I regularly monitor the output current while flying, I always thought it would be really useful to be able to know what's going on at the VPSU as well as the know the losses in the tether. Fortunately, there are two unused conductors in the connector between the VPSU and Falcon Junction box so we utilized them to transmit that information to be displayed on the surface power supply. Also, due to the wide input voltage range, you can easily swap between 5km and 300m tethers without having to tune the surface power supply.
VPSU:
Input Voltage 500-800 Vdc
Output Voltage 48vdc
Power Output 3.6Kw
300m or 1000m depth rating
Data comms: RS485
Data output:
Input Voltage
Input current
Input watts
Internal temperature
Leak alert.
Surface Power Supply:
Input voltage 180-260 Vac, 47-63 Hz
32 amps
Output Voltage 800Vdc
Output Power 5.4Kw
Display 1:
Output Voltage - Actual, Min, Max
Output Current - Actual, Min, Max
Output Power - Actual, Min, Max
Display 2:
Input Voltage at VPSU - Actual, Min
Input Current at VPSU
VPSU Power - Actual, Max
Tether Losses- Watts, Voltage Drop
Temperature,
Leak Alarm
Max Reset Button: Resets Min and Max readings and Leak Alarm.
