Subsea Batteries

Item 

Subsea UPS 24V

Voltage

24 V

Energy 

63.3 Wh

253 Wh

674 Wh

Current

4 A

3 A

8.3 A cont. 60 min subsea

11.5 A max. 1 min. subsea

Diameter

Ø 184 mm

Length

127 mm (w/o conn.)

220 mm (w/o conn.)

300 mm (w/o conn.)

Weight

3 kg in air

4.8 kg in air

6.5 kg in air

Data interface

RS-485 MODBUS / MODBUS RTU, isolated, Modicon PI-MBUS-300

Qualification

API17F

TRL

7

7

2

Item 

Subsea UPS 400 V / 294 mm

Voltage

• 300 to 400 VDC

Energy 

• 3.6 kWh

Power

• typ. 1 kW, max. 1.4 kW, optionally up to 5 kW peak

Diameter

• Ø 294 mm x 550 mm (w/o connectors)

Weight

• 65 kg in air (with aluminium housing)

Data interface

• RS-485 MODBUS / MODBUS RTU, isolated; optional: CAN

TRL

5

Item 

Subsea UPS 400 V /421 mm

Voltage

• 3 x 367 V_DC nominal (unregulated battery output, 316 V_DC to 425 V_DC)
• 2 x 24 V_DC (regulated, others on request)

Energy 

• 18.1 kWh available (20.9 kWh nominal)

Power

• 5 kW continuous (6.5 kW peak)

Charger

• Embedded 3 kW charger with wide input voltage range (85 V_AC to 275 V_AC)

Diameter

• Ø 421 mm x 972 mm (w/o connectors)

Weight

• 450 kg in air (with steel housing)

Data interface

• RS-485 MODBUS / MODBUS RTU, isolated

TRL

6

Item 

Borehole / String Batteries

General

• Specialised batteries designed for borehole-applications and harsh environments. Resistant to riser fluids, high temperature and high pressure.

• Multiple batteries can be paralleled to extend the capacity.

Energy

1.2 kWh (high temperature)

1.92 kWh

Operating Temperature

Discharge -20 °C to 75 °C

Charge 0 °C to 50 °C

(measured at cell surface)

Discharge -20 °C to 60 °C

Charge 0 °C to 45 °C

(measured at cell surface)

Design Depth

6900 m

3050 m

Voltage

• 1 x 125 V_DC – 176 V_DC
• 1 x 24 V_DC regulated
• 1 x 5  V_DC regulated

130 V_DC – 187 V_DC

Output current

• HV: 5 A cont. / 10 A peak
• LV: 1 A cont. each

5 A cont. / 10 A peak

Diameter

Ø 108 mm x 1051 mm (w / o connectors)

Ø 108 mm x 1051 mm (w / o connectors)

Weight

24 kg (in air)

22 kg (in air)

Data interface

RS-485 MODBUS / MODBUS RTU, isolated

RS-485 MODBUS / MODBUS RTU, isolated

TRL

7

6

Technology

• Li-ion rechargeable battery
• High-power, high safety, highly reliable industrial cells
• SubCtech's electronic for high voltages, capacities and currents
• UL / UN certified cells

Production

• Production following IPC-A-600 and IPC-A-610 class 3, conformal coating

Design life

• 25 years

Battery life time

• 10 years min., 15 years typ.

Housing

• Operational depth to 6000m
• Used Materials:
  • Titanium (corrosion-free)
  • Aluminium
  • Steel
  • Super duplex steels
  • POM
• Others to be developed

Data Interface

• User friendly interface to host system with standardised data format for easy integration
• Interfaces:
  • RS-485 (full isolation possible)
  • RS-232 (full isolation possible)
  • CAN (full isolation possible)
  • Ethernet (prototyping phase)
• Possible Protocols
  • SIIS L2
  • MODBUS RTU
  • NMEA-0183 (ASCII)
  • Others upon request

Temperatures

• Operating: -20 °C… +60 °C
• Charging: 0 °C… +45 °C
• Storage & Transporation: -20 °C… +60 °C (all temperatures cell surface)
• Support for arctic and tropical conditions

Safety

• Optional redundant battery concept guarantees 50% remaining capacity per battery in case of any fatal failure for emergency procedures
• Mechanical & electrical protections

Qualification

• Type approval exaples: MIL-STD, e.g, 810G Shock & Vibration;
• 461F for EMC
• API17F qualification
• NATO Codes
• DNV and other international / customer standards
• UN T38.3 on cell level in any case; on battery level upon request