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. The cable glands are not supplied with the CS90.
Note
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. 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 to 10 cm) of cable slack must be allowed, both inside and outside the unity or cabinet, when you install cables. This is to allow for vibration damping, maintenance and measurement errors. Always double-check your measurements before taking any irreversible actions.
3 Measure the maximum length of cable.
a If the cable has already been installed in conduits: Measure the maximum length of cable required to reach from the final cable clip outside the cabinet to the terminal block(s) inside the cabinet. Add 20 cm, and remove the excess cable.
b If the cable has not been installed in conduits: Measure the maximum length of wire required to reach from the cable gland to the terminal block(s) inside the cabinet. Add 20 cm, and mark the cable.
Note
The outer insulation on the cable will extend into the cable gland to a point approximately 5 mm outside the outer surface of the cabinet wall.
4 Carefully remove the outer insulation from the required cable length.
Be careful! Do not damage the screen!
5 Leaving an appropriate length of the screen exposed from the insulation, cut off the remainder.