TECHNICAL SPECIFICATIONS
5.7 IP protection
Each part of a Simrad CS66 system has got a two digits IP
protection code.
The IP rating is a method to classify the degree of protection
against solid objects, water ingress and impact afforded by
electrical equipment and enclosures. The system is recognized in
most European countries and USA and is set out in a number of
British and European standards.
The first code number describes the protection against solid
objects, and the second number describes the protection against
liquids.
FIRST NUMBER
Protection against solid objects
SECOND NUMBER
Protection against liquids
IP TESTS IP TESTS
0 No protection 0 No protection
1 Protection against solid objects up to 50
mm, e.g. accidental touch by hands.
1 Protected against vertically falling
drops of water (e.g. condensation).
2 Protection against solid objects up to 12
mm, e.g. fingers.
2 Protected against direct sprays of
water up to 15° from the vertical.
3 Protection against solid objects over 2.5
mm (tools + wires)
3 Protected against sprays to 60° from
the vertical.
4 Protection against solid objects over 1
mm (tools + wires + small wires)
4 Protected against water sprayed from
any direction - limited ingress
permitted.
5 Protection against dust - limited ingress
(no harmful deposit)
5 Protected against low pressure jets of
water from all directions - limited
ingress permitted.
6 Totally protected against dust 6 Protected against strong jets of water,
e.g. for use on shipdecks - limited
ingress permitted.
7 Protected against the effects of
immersion between 15 cm and 1 m.
8 Protected against long periods of
immersion under pressure.
20221867 / F 33
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