Power Failures

In the event of a power failure, the brake automatically locks the Seakeeper so it cannot generate anti-rolling torque loads.

When a power failure occurs, it is important to identify the two sources of power to the Seakeeper 1:

• High current 12 VDC in, powers the control electronics and motor drive.
• SW Pump 12 VDC in, powers the seawater cooling pump.

These are supplied on Conductors 1 and 2 and Cable 7 which are shown on Drawing No. 90511 – Seakeeper 1 Cable Block Diagram.

The Motor Connections should not be touched when the Seakeeper is powered on or the motor is running. This voltage hazard exists even if the flywheel is coasting down and the supply voltage has been shut off. The flywheel must be at 0 RPM and DC input power disconnected for at least 10 minutes prior to any service work on the Seakeeper.