Transducer Cable Splicing; Order Numbers; Steel Conduit - Simrad ES70 - INSTALLATION REV A Installation Manual

Simrad ES70

Transducer cable splicing

If you need to cut or lengthen the transducer cable, you must splice it correctly. The
cable between the junction box and the transceiver must then be supplied by Simrad,
and this must be the same type as used on the transducer(s). To splice the cable, use a
metal junction box with EMC cable glands and a terminal block. The terminal block
must provide solid fastening of the cable ends as well as sufficient insulation between
the wires. We recommend that the cable screen is connected to the junction box chassis
using the EMC cable glands, but if you do this, the junction box chassis must not be
connected to vessel's ground.
Note
Do not solder the wires together with only electrical tape for insulation. This will result
in electrical noise and reduced operational performance.
Do not connect the cable screen to the vessel's ground.

Order numbers

The cable glands described in this chapter are available as kits from Simrad. Observe the
following order numbers.
Hull type Item
Steel Cable gland kit, steel, 8 to 15 mm cables
Steel Cable gland kit, steel, 17 to 18,5 mm cables
Wood/GRP Cable gland kit, bronze
Small Cable gland kit, plastic

Steel conduit

Why use steel conduits?
It is strongly recommended to lay a steel conduit from the transducer's cable gland
to the echo sounder transceiver, and to pull the transducer cable through this conduit.
There are several reasons for this.
• It will make it easier at a later stage to replace the transducer.
• Noise and interference from other electrical equipment is greatly reduced.
• The risk of flooding is greatly reduced if the pipe is terminate above the water line.
With a steel conduit the installation will satisfy the EU regulations for EMC interference.
Without a steel conduit, there is a risk of reduced echo sounder performance.
142
Order number
499–037763
305609
119-038200
599-202182
343522/A