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IP Ratings

IP Ratings


The IEC protection code (International Protection IP)

The IP codes are used to define protection against the ingress of solid foreign objects and water with harmful effects. The protection against the ingress of solid foreign objects is also used as a means of specifying protection against accidental contact with live parts and therefore serves two different but related purposes.

 

Interpreting the IP code

The IP code consists of 2 numerals and 2 optional extra letters. The first numeral 0, 1,...6,or X defines the protection against ingress of solid foreign objects and against access to hazardous parts. The second numeral 0, 1,...8, or X defines the protection against the ingress of water.

 

Elements of the IP Code and their meanings:

Code Letters

Numeral or Letter

Meaning for the Protection of Equipment

Meaning for the Protection of Persons

First

characteristic

numeral

 

Against ingress of solid foreign objects:

Against access to hazardous parts with:

X

Not required

Not required

0

Non-protected

Non-protected

1

≥ 50 mm diameter

back of hand

2

≥ 12,5 mm diameter

finger

3

≥ 2,5 mm diameter

tool

4

≥ 1,0 mm diameter

wire

5

dust-protected

wire

6

dust-tight

wire

 

 

 

 

Second

characteristic

numeral

 

Against ingress of water with harmful effects:

 

X

Not required

0

Non-protected

1

vertically dripping

2

dripping (15° tilted)

3

spraying

4

splashing

5

jetting

6

powerful jetting

7

temporary immersion

8

continuous immersion

 

 

 

 

Additional letter:

(optional)

 

 

Against access to hazardous parts with:

 

A

 

back of hand

 

B

 

finger

 

C

 

tool

 

D

 

wire

 

 

 

 

Supplementary

Letter:

(optional)

 

Supplementary information

specific to:

 

 

H

High voltage apparatus

 

 

M

Motion during water test

 

 

S

Stationary during water test

 

 

W

Weather conditions

 

 

Degree of Protection Table

IP CODE

Protected Against

Definition

IP0X

Non-protected

-

IP1X

Access to hazardous parts with the back of a hand.

An access probe, sphere of 50mm Ø, shall have adequate clearance from hazardous parts.

Solid foreign object of 50mm Ø.

An object probe, sphere of 50 mm Ø, shall not fully penetrate.

IPXXB

Access to hazardous parts with finger.

A jointed test finger of 12 mm Ø, 80mm length, shall have adequate clearance from hazardous parts

Solid foreign objects not required.

-

IP2X

Access to hazardous parts with finger.

A jointed test finger of 12 mm Ø, 80mm length, shall have adequate clearance from hazardous parts

Solid foreign objects of 12.5 mm Ø.

An object probe, sphere of 12.5 mm Ø, shall not fully penetrate.

IP3X

Access to hazardous parts with a tool.

An access probe of 2.5 mm Ø shall have adequate clearance.

Solid foreign objects of 2.5 mm Ø.

An object probe of 2.5 mm Ø shall not penetrate at all.

IP3XD

Access to hazardous parts with a wire.

An access probe of 1 mm Ø shall have adequate clearance.

Solid foreign objects of 2.5 mm Ø.

An object probe of 2.5 mm Ø shall not penetrate at all.

IP4X

Access to hazardous parts with a wire.

An access probe of 1.0 mm Ø shall have adequate clearance.

Solid foreign objects of 1.0 mm Ø.

An object probe of 1.0 mm Ø shall not penetrate at all.

IP5X

Access to hazardous parts with a wire.

An access probe of 1.0 mm Ø shall have adequate clearance.

Dust (protected).

Ingress of dust is not totally prevented, but dust shall not penetrate in a sufficient quantity to interfere with

satisfactory operation of the apparatus or to impair safety.

IP6X

Access to hazardous parts with a wire.

An access probe of 1.0 mm Ø shall have adequate clearance.

Dust (tight).

No ingress of dust.

Water Ingress

IPX0

Non-protected.

-

IPX1

Vertically falling water drops.

Vertically falling drops shall have no harmful effects.

IPX2

Vertically falling water drops when enclosure is tilted up to 15°.

Vertically falling drops shall have no harmful effects when the enclosure is tilted at any angle up to 15° on either side of the vertical.

IPX3

Spraying water.

Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects.

IPX4

Splashing water.

Water splashed against the enclosure from any direction shall have no harmful effects.

IPX5

Water jets.

Water projected in jets against the enclosure from any direction shall have no harmful effects.

IPX6

Powerful water jets.

Water projected in powerful jets against the enclosure from any direction shall have no harmful effects.

IPX7

The effects of temporary immersion in water.

Ingress of water in quantities causing harmful effects shall be prevented when the enclosure is immersed in 1m of water for 30 minutes.

IPX8

The effects of continuous immersion in water.

Ingress of water in quantities causing harmful effects shall be prevented when the enclosure is continuously immersed in water under conditions which shall be agreed between manufacturer and user (>IPX7).

 

  

Examples of designations with the IP Code:

 IP Code not using optional letters: IP 34

 

 

An enclosure with this designation (IP Code):

 

3            Protects persons, handling tools having a diameter of 2,5 mm and greater, against access to hazardous parts;

 

Protects the equipment inside the enclosure against ingress of solid foreign objects having a diameter of 2,5 mm and greater;

 

4            Protects the equipment inside the enclosure against harmful effects due to water splashed against the enclosure from any direction.

 

 Examples of designations with the IP Code:

 IP Code using optional letters: IP 23 CS

 

 

An enclosure with this designation (IP Code):

 

2            Protects persons against access to hazardous parts with fingers;

               

Protects the equipment inside the enclosure against ingress of solid foreign objects having a diameter of 12,5 mm and greater;

 

3            Protects the equipment inside the enclosure against harmful effects due to water sprayed against the enclosure;

 

C       Protects persons handling tools having a diameter of 2,5 mm and greater and a length not exceeding 100 mm against access to hazardous parts (the tool may penetrate the enclosure up to its full length);

 

S        Is tested for protection against harmful effects due to ingress of water when all the parts of the equipment are stationary.

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