Connecting AC mains and ground to the Power Supply Unit
Each MS70 Power Supply Unit must be connected to AC mains. The units must also be properly grounded.
Context
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The mains voltage for the Power Supply Unit is 230 VAC. It is connected to the uninterrupted power supply (UPS) for this supply power. The Power Supply Unit cabinet is connected to vessel ground. Two cables are used.
•  AC power cable
This cable is supplied with the MS70 delivery. The cable is readily connected to the terminal block inside each Power Supply Unit.
•  Ground cable
This cable must be provided by the installation shipyard.
Note
In order to prevent unwanted grounding loops, the mains power for both the Power Supply Unit and the Transceiver Unit must be connected to the same source. We recommend that the same contact block is used.
Procedure
1 Open the Power Supply Unit.
2 Observe the terminal block on the left hand side.
3 Verify that the AC mains cable has been connected to the top three slots on the "small" terminal block.
4 Connect the other end of the power cable to the AC output on the uninterruptible power supply (UPS).
5 Close the Power Supply Unit.