The Subsea USB 250W system is based on the Unplugged inductive technology for transfer of electrical power and communication subsea. The 250W connector system is part of the complete "Subsea-USB" system covering power range from 50W to 3000W with communication speeds up to 1 Gbit/s.

In general, each Inductive system consists of a Primary (TX) and a Secondary (RX) side installed in a ROV friendly housing. The power is transferred from the Primary side to the Secondary side whilst communication is operated in full duplex.

The Subsea-USB Connectors can be configured in the following alternatives:

1. Manually operated by hand
2. ROV operated.
3. Bulkhead piggy backed on other equipment.
4. Combined with hydraulic connector thus allowing for electrical power, communication and hydraulic connections to be made up using the same connector assembly.

100-250VAC or 145-350VDC input voltage and 24VDC/voltage output on the secondary side. The inductive coils are galvanically sealed from each other and can be looked at as a 1 to 1 transformer. The 250W system has 10pin Subconn connector where RS232 or RS485 (230kbps) can be configured together with Ethernet (80Mbps) and Power. You can have RS232 configured on the Secondary side (tool side) and RS485 configured on the primary side (ROV side). Most systems are rated to 3000m water depth.

As an option the output voltage can be configured to 325VDC to supply another primary connector in order to make a jumper with inductive connector in both ends.

The system can be delivered in the following material types: Aluminium or Super duplex. It is recommended to always include the connector in the CP protection system and make sure it is in galvanic contact. Aluminium is designed for short-term (intervention) use. Super Duplex version has a design life of 3-5 years.