Preparing the Power Supply Unit installation
The three Power Supply Units are mounted in the vicinity of the Transceiver Unit. The physical distance is limited by the length of the power cables between the units.
Prerequisites
Image
Air flow
You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electromechanical tasks, such as different screwdriver types, pliers, spanners and wrenches. Each tool must be provided in various sizes. We recommend that all tools are demagnetized to protect your equipment. Depending on the chosen installation method, additional tools may be required. Observe the relevant rules and regulations related to welding. The quality of the welding is critical to the safety of the vessel. Welding must only be done by a certified welder.
If required, all documents provided by the shipyard for the physical installation of the MS70 must be approved by the vessel’s national registry and corresponding maritime authority and/or classification society. Such approval must be obtained before the installation can begin. The shipowner and shipyard doing the installation are responsible for obtaining and paying for such approval.
Note
Observe the installation principles.
Context
Each cabinet can be installed side by side or over of each other. Make sure that enough space is provided between the cabinets to allow for ventilation, maintenance and parts replacements. You may find it useful to design, manufacture and mount bulkhead support brackets for the shock absorbers.
Alternatively, the three cabinets can be installed together using a dedicated frame. The frame must be ordered separately. It is mounted vertically on the bulkhead by means of shock absorbers.
Image
The power cables from the three Power Supply Unit to the Transceiver Unit must be run in steel conduits.
The power cables from the three Power Supply Unit to the Transceiver Unit must be run in steel conduits. These conduits serve the following purposes:
•  Noise and interference protection
•  Physical protection
The minimum internal diameter of the steel conduits is 5 cm. The maximum length of unprotected cable is 1 meter in each end of the conduit. For this reason, separate conduits for each Power Supply Unit is required.
Procedure
1 Prepare the location and the necessary tools.
Observe the outline dimensions drawing. The drawing is located in the Drawing file chapter in this manual. It can also be downloaded from our website.
2 Observe the installation requirements.
•  The position must be chosen to fit the available cable lengths between each Power Supply Unit and the other units it connects to.
•  The position must comply to the limited cable lengths between each Power Supply Unit and the Transceiver Unit. Short distance to the Transceiver Unit is always first priority.
•  Provide ample space around the unit to allow for inspection, maintenance and parts replacement.
Minimum space requirements:
–  Front: 80 cm
–  Rear: 0 cm
–  Below: 0 cm
•  Make sure that the space allows the unit door to be fully dismounted for unobstructed access to its internal parts.
•  Verify that the installation does not cause problems with existing cabling, ventilation ducts, piping etc. Check both sides of the bulkhead.
•  Make sure that enough space is made available for maintenance purposes.
•  Make sure that adequate ventilation is available to avoid overheating.
•  Ensure that the installation method allows for the physical vibration, movements and forces normally experienced on a vessel.
3 Verify that the chosen location meets the installation requirements.
4 If relevant, install the mounting frame.
a Observe the outline dimensions drawing.
The drawing is located in the Drawing file chapter in this manual. It can also be downloaded from our website.
b Remove the shock absorbers from the power supply cabinets.
c Mount four of these shock absorbers on the mounting frame using the same bolts and nuts.
d Bolt or weld the mounting frame to the bulkhead.
5 If relevant, mount the bulkhead support brackets.
a Design and manufacture the bulkhead brackets.
b Make the required mounting holes to accept the shock absorbers.
c Position the brackets on the bulkhead, and mount them using bolts or welds.
6 Design, manufacture and mount the steel conduits for the power cables.
Further requirements