Simrad Simrad SP70, Руководство по установке

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Introduction
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1.7 Installation requirements
Responsibility and approval
The Simrad SP70’s Hull Unit sleeve has been approved by Det
Norske Veritas (DNV) Classification society.
Individual Hull Unit installations must be approved on a
case-by-case basis with regard to the vessel’s national registry and
corresponding maritime authority. The shipowner and shipyard
performing the installation are responsible for obtaining
installation approval.
Supply power
The supply voltage to the equipment is to be kept within
±
15% of
the installation’s nominal voltage. Maximum transient voltage
variations on the main switchboard’s bus-bars are not to exceed
-15% to +20% of the nominal voltage (except under fault
conditions).
Simrad strongly recommends that the SP70 sonar be powered
using an Uninterruptible Power Supply (UPS). The UPS should
have the capacity to independently maintain power to the sonar for
a minimum of 10 minutes. This ensures that the system can be
switched off in a controlled manner in the event of a power failure.
Environmental requirements
Temperature and humidity
All equipment, unless otherwise specified, must be protected from
temperature extremes and excessive humidity.
→
Refer to page 157 for more information.
Compass deviation
Once the installation is complete, the vessel must be swung with
the sonar in both the operative and inoperative modes. The
shipowner and captain are responsible for updating the deviation
table accordingly with regard to the vessel’s national registry and
corresponding maritime authority.
Noise sources
The vessel’s hull, rudder(s) and propeller(s) should be thoroughly
inspected in dry dock prior to installation. Roughness below the
water-line deformities in the shell plating and protruding obstacles
can create underwater noise. These sources of turbulence must be
smoothed or removed as best as possible. It is especially important
that the propeller(s) is not pitted or damaged.