Simrad EC150-3C, Installation Manual

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2 Manufacture the steel conduit according to the relevant production standards.
3 Mount the steel conduit.
Secure the steel conduit to decks and/or bulkheads with welds. Observe relevant
requirements and guidelines from the classification society, and make sure that the
conduit is properly supported, strong and watertight.
Note
The quality of the welding is critical to the safety of the vessel. Welding must only
be done by a certified welder.
4 If relevant, allow the maritime authority and/or classification society to inspect and
approve the design and the installation of the steel conduit.
Related topics
Installation summary, page 61
Using a steel conduit to protect the
transducer cable
A steel conduit must be used to protect the transducer cable. The steel conduit must
preferably be straight. Start the conduit immediately above the transducer, and terminate
it well above the water line.
It is strongly recommended to lay a steel conduit from the cable gland above the
transducer to the EC150-3C transceiver, and to pull the transducer cable through this
conduit. The conduit serves two purposes. It will protect the cable, and shield it from
electric noise. Depending on how the steel conduit is terminated over the transducer,
it may also secure the watertight integrity of the vessel.
There are several reasons for this.
• It will make it easier at a later stage to replace the transducer.
• It will protect the cables.
• Noise and interference from other electrical equipment is greatly reduced.
• The risk of flooding is greatly reduced when the steel conduit is terminated above
the water line.
With a steel conduit the installation will satisfy the European Union regulations for
electromagnetic compatibility (EMC) interference. Without a steel conduit, there is a
risk of reduced EC150-3C performance.
Installation