Poznámky redaktora
597
Gira electrical installation systems
Protection types
I
Technical
information
Protection against contact, foreign bodies and water accordance
with 60529/DIN VDE 0470 Part 1
Depending the environmental conditions under which used,
equipment must protected against contact, the ingress foreign
bodies various sizes and ingress water.
II Equipment with simple basic insulation
and additional insulation (double insula-
tion) with reinforced insulation (sin-
gle-stage insulation).
C people who insert tool with diameter 2. metal covering of
devices) can energised. The bodies
are connected protective earthing
conductor and protected via safe-
guard measure (e. The so-called codes were
specified define the degree which piece equipment pro-
tected.
1 the equipment against the ingress vertically dripping water.
Digits (2), see table the side:
Describes the protection equipment terms protection against
contact and foreign bodies and against the harmful ingress water. g.
III Protection against dangerous shock
currents ensured via the safety extra-
low voltage safety measure (alternating
current ≤50V, direct current ≤120V,
safety voltage source).
If fault occurs the basic insulation,
the body (e.
IP C
(1) (2) (3)
The housing this equipment protects
2 people from accessing dangerous parts with their fingers and
protects the equipment against the ingress foreign bodies
with diameter least 12.
Protection class Symbol Description
I Equipment with simple basic insulation.5mm and larger
and length 100mm into the housing.5mm and larger. There are three protection classes,
whose meanings are described the following table.5mm against con-
tact with tool
against water sprayed at
an angle 60° to
the vertical
4 against foreign bodies
>1mm against contact
with wire
against water splashed
from all directions
5 against harmful dust
deposits the inside
against water jets from all
directions
6 against the ingress of
dust (dust-proof)
against powerful
water jets
7 with temporary
immersion
8 with continuous
immersion
Protection classes against excessive contact voltage
The type protection against dangerous shock currents identified via
a protection-class specification.
The codes are presented the following format:
IP identifier (1) digits (2) letter (3)
Identifier (1):
Symbol for the protection people against touching dangerous parts
and protection the equipment against the intrusion foreign bodies
and water. the basic insula-
tion fails, protection the event of
indirect contact thus ensured (protec-
tive measure: protective insulation).
Letter (3):
In addition, the degree protection for people may indicated with a
letter after the two digits.
Possible letters:
A Safe for the back the hand
B Safe for the fingers
C Protected against access with tool 100mm length
D Protected against access with wire 100mm length
Protection levels pursuant 529:
Digit Degree protection
Contact and
foreign-body protection
(1st digit)
Water protection
(2nd digit)
0 not present not present
1 against foreign bodies
>50mm against back
of hand
against vertically dripping
water
2 against foreign bodies
>12mm against con-
tact with finger
against water dripping
tilted angle to
15° the vertical
3 against foreign bodies
>2. stands for “international protection”.
. disconnection
from the power supply overload pro-
tective devices)
