Marine Renewables
At J+S, we recognise that the Offshore Industry brings challenges in getting power and control information from energy conversion devices to shore.
J+S Subsea Drymate Connector
The J+S dry-mate connector allows high voltage power to be transferred from tidal and wave generation systems through various sized composite cables comprising power cores, system control (fibre optic cores) and cable communication cores.
The J+S solution provides a pressure balanced make and break connection allowing generators and cables to be safely deployed and connected. The termination was designed to be virtually Partial Discharge (PD) free, required for test and development installations. It can be configured as a pass-through connection or testable stop-end. In the latter mode it allows full monitoring, energisation and testing of the terminated cable from the shore.
Terminated cables are then converted to a splice or in line connection to connect to a generator.
The connection can at any time be returned to a stop-end termination without the need to replace the assembly therefore minimising costs.
Key Features
- Attached to a composite cable and left as a stop-end allowing cable integrity to be tested.
- Converted to a splice/connector by populating the second half of the frame.
- Deploy / recover in seas with high current flow due to the free flooding design of the frame and integral lift points with bend stiffeners to limit the stress induced through the cables.
- Utilise for up to 25 years due to built-in cathodic protection and subsea coating.
- Can be modified to meet individual customer requirements.
System Description
- Two-part subsea coated and cathodically protected frame assembly.
- Facility to terminate power cores – up to 36kV.
- Facility to terminate control – protection cores.
- Facility to terminate multiple fibre optics with loop-back for shore testing..
- Designed for safe and secure deployment and recovery.
- The J+S system is available in various configurations to meet different cable size / configuration requirements including branch termination..
- The design is fully scalable for the ever-changing requirements in the Marine Renewables environment.
J+S Fastmate Connector
The latest Mark V version of the J+S fastmate connector is designed to reduce pre-assembly and offshore installation time to an absolute minimum.
Mark V Receptacle Connector
The receptacle connector assembly is a cylindrical assembly directly mounted onto the end of the umbilical. The connector is designed to interface directly to the Mark V Plug connector.
The following elements are incorporated into the design;
- Glanded housings for receptacle half of connector for each power core connection.
- Fully water-blocked armour termination assembly mounted directly to rear of the connector frame and with interface for either Vertebrate Bend Restrictor or bend reducer.
- Fibre Optic junction box and patch cable.
- Low Voltage control circuit direct or manual connection interfaces.
- Lifting and handling.
- Coating and Cathodic protection.
- Alignment & Guide Pin Receivers.
- Through connection of earth and screening braids.
Mark V Plug Connector
The plug connector assembly is a cylindrical assembly directly mounted onto the end of the umbilical. The plug connector is designed to interface directly to a receptacle connector or into a distribution or transformer hub with receptacle connector interfaces.
- Glanded housings for receptacle half of connector for each power core connection.
- Flexible mounting arrangement for connector alignment and clearance allowance.
- Fully water-blocked armour termination assembly mounted directly to rear of connector frame and with interface for either Vertebrate Bend Restrictor or bend reducer.
- Wet storage protective cover.
- Fibre Optic junction box and patch cable.
- Low Voltage control circuit direct or manual connection interfaces.
- Lifting and handling.
- Coating and Cathodic protection.
- Alignment & Guide Pins.
- Through connection of earth and screening braids.
Mark V Connector Hub
The J+S connector hub interfaces with Mark V connections to accept a standardised connector fitted to import and export umbilical cables. Connections would be dry-mate connections made on the deck of a suitable support vessel.
Subsea Connector Hub - 3 Way
The J+S connector hub interfaces with Mark V connections to accept a standardised connector fitted to import and export umbilical cables. Connections would be dry-mate connections made on the deck of a suitable support vessel.
Key Features
- Receptacle connector interfaces as per Mark V receptacle connector above arranged on a front face of a connector hub assembly.
- 3-phase power distribution housing.
- Glanded cable assemblies between power distribution housing and receptacle connector interfaces.
- Wet storage protective covers for each power core connection.
- Fibre Optic junction box and patch cable.
- Low Voltage control circuit direct or manual connection interfaces.
- Lifting and handling.
- Coating and Cathodic protection.
- Alignment and guide pin receivers.
- Through connection of earth and screening braids.
Subsea Connector Hub - 5 Way
The 5-way connector hub assembly will be a standalone assembly similar to the 3-way hub but with 5 Mark V receptacle interfaces mounted on one end. The female interfaces are designed to interface directly to Mark V plug connectors for connection to 4 of generator inputs and output service connection.
The connector hub could also be daisy chained with up to 3 generator inputs connected into a ring main.
High Voltage Terminations
J+S have experience and capability to provide support for High Voltage connector termination and splice repair work both on and offshore. We have our own offshore rated habitat that can provide a safe and sheltered working environment on the back deck of a vessel.
Rugged and Flexible Solutions
Our Marine Renewables Systems offer clients proven, rugged and flexible solutions for onshore and offshore implementation. Our proven track record and expertise have also allowed us to begin working on the next generation of connectors to reduce installation and connection times for the operator.
- J&S Subsea Limited
-
Holland House
Pitmedden Road
Dyce
AB21 0DP - T: +44 1224 773435
- E: info@jands.co.uk
- Registered in Scotland No : SC645331
