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4 .8 I P pr ot e ct ion
Each par t of a Sim rad aut opilot syst em has a t wo digit s I P
prot ect ion code.
The I P rat ing is a m et hod t o classify t he degr ee of prot ect ion
against solid obj ect s, wat er ingress and im pact afforded by
elect r ical equipm ent and enclosures. The sy st em is recognized in
m ost European count ries and is set out in a num ber of Brit ish
and European st andards.
The fir st code num ber descr ibes t he prot ect ion against solid
obj ect s, and t he second num ber describes t he prot ect ion against
liquids.
FI RST N UM BER
Prot ect ion against solid obj ect s
I P
TESTS
0
No prot ect ion
1
Prot ect ion against solid obj ect s
up t o 50 m m , e.g. accident al
t ouches by hands.
2
Prot ect ion against solid obj ect s
up t o 12 m m , e.g. fingers.
3
Prot ect ion against solid obj ect s
over 2.5 m m ( t ools + w ires)
4
Prot ect ion against solid obj ect s
over 1 m m ( t ools + w ires +
sm all w ires)
5
Prot ect ion against dust - lim it ed
ingress ( no har m ful deposit )
6
Tot ally prot ect ed against dust
30 | Technical specificat ions
SECON D N UM BER
Prot ect ion against liquids
I P
TESTS
0
No prot ect ion
1
Prot ect ed against v ert ically falling
drops of wat er ( e.g.
condensat ion) .
2
Prot ect ed against direct sprays of
wat er up t o 15° from t he vert ical.
3
Prot ect ed against sprays t o 60°
from t he vert ical.
4
Prot ect ed against wat er sprayed
from any direct ion.
5
Prot ect ed against low pressure
j et s of wat er fr om all dir ect ions -
lim it ed ingr ess perm it t ed.
6
Prot ect ed against st rong j et s of
wat er , e.g. for use on ship decks
- lim it ed ingress perm it t ed.
7
Prot ect ed against t he effect s of
im m er sion bet ween 15 cm and
1 m .
8
Prot ect ed against long periods of
im m er sion under pressure.
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