Ingress Protection

Date:2010年7月9日 15:16

Two digits are used to denote the level of ingress protection that a piece of apparatus enjoys
(The first digit denotes the level of protection against solid objects and the second against liquids)

1St  Number  against Solids 

 2nd Number against  Liquids

0

No protection.

0

No protection.

1

Protected against solid objects
up to 50mm, e.g. hands.

1

Protected against vertically falling
drops of water.

2

Protected against solid objects
up to 12mm, e.g. fingers.

2

Protected against water spray up
to 15 degrees from vertical.

3

Protected against solid objects
up to 2.5mm, e.g. tools.

3

Protected against water spray up to
60 degrees from vertical.

4

Protected against solid objects
over 1mm, e.g. wires.

4

Protected against water sprays from
all directions.

5

Protected against dusts.
(No harmful deposits).

5

Protected against water jets from
all directions.

6

Totally protected against dust.

6

Protected against strong water jets
from all directions, e.g. Offshore.

.

.

7

Protected against immersion between
15cm and 1m in depth.

 

 

8

Protected against long immersion
under pressure.

 

Note: IP54 is the minimum protection allowed for Hazardous Area Equipment
North American practice is to use NEMA standards to describe ingress protection, i.e:

NEMA 3 is similar to IP 54
NEMA 4 is similar to IP 55
NEMA 4x is similar to IP 56
NEMA 6 is similar to IP 67

TypeInfo: Technical Resoureces

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