Kongsberg Simrad SN90, Руководство по установке

Страница: 176 / 298

174
381298/C
Preparing cables for termination
Whenever a cable shall penetrate a cabinet or a bulkhead using a cable gland, the
termination of the cable must be prepared.
Prerequisites
Electrical installations can only be done by certified electricians. All necessary tools and
instruments required must be available. The installation shipyard must prepare detailed
drawings of the electrical system, and identify each cable.
Context
Cable glands are used whenever a cable passes through a watertight bulkhead or into a
cabinet, to seal the opening through which the cable passes and to protect the cable from
abrasion on the edges of the hole. Follow the guidelines provided here when installing
cables through cable glands.
Important
There are many different types of cable gland on the market. This procedure describes
the types used (now and previously) as standard in the units manufactured by Kongsberg
Maritime. The cable glands are not supplied with the system.
Even though the cabinets from Kongsberg Maritime may be prepared for specific types,
the installation shipyard will be responsible for selecting cable gland types and installing
them.
Procedure
1 Ensure all the cables to be connected are completely isolated from any power
sources.
For safety reasons, switch off and remove the power supply fuses from any units or
systems into which the cables are already connected.
2 Select the cable to be connected into the cabinet, and select the cable gland through
which the cable is to pass.
Note
A minimum of 5 cm (recommended 5 - 10 cm) of slack cable must be allowed,
both inside and outside the cabinet, when installing cables. This is to allow for
vibration damping, maintenance and measurement errors. Always double-check
your measurements before taking any irreversible actions.
3 Depending on whether the cable has previously been installed in conduits:
Simrad SN90