Ip Protection - Simrad AP25 Instruction Manual

8.8

IP protection

Each part of a Simrad autopilot system has 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 recognised in
most European countries 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.
Protection against solid
IP TESTS
0 No protection
1 Protection against solid
objects up to 50 mm, eg.
accidental touch by hands.
2 Protection against solid
objects up to 12 mm, eg.
fingers.
3 Protection against solid
objects over 2.5 mm (tools +
wires)
4 Protection against solid
objects over 1 mm (tools +
wires + small wires)
5 Protection against dust -
limited ingress (no harmful
deposit)
6 Totally protected against
dust
20222139A
FIRST NUMBER
objects
Technical specifications
SECOND NUMBER
Protection against liquids
IP TESTS
0 No protection
1 Protected against vertically falling
drops of water (eg. condensation).
2 Protected against direct sprays of water
up to 15° from the vertical.
3 Protected against sprays to 60° from the
vertical.
4 Protected against water sprayed from
any direction.
5 Protected against low pressure jets of
water from all directions - limited
ingress permitted.
6 Protected against strong jets of water,
eg. 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.
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