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gon2fast

IP Rating(s)

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My wife asked for a Segway scooter for Christmas. When I was looking at the specs I noticed that the scooter had an IP rating and I made the assumption that it was obviously waterproof like my two wheels. I ended up looking up the specific IP rating (IP54) out of curiosity. I was very surprised/interested by the differences between the two device's level of weather/ element protection. 

Scooter = IP54 -  A product with an IP54 rating is protected against quantity of dust that could interfere with the normal operation of the product but is not fully dust tight. The product is completely protected against solid objects. It is also protected against water splashing from any angle.

V10 = IP55 - A product with an IP55 rating is protected against quantity of dust that could interfere with the normal operation of the product but is not fully dust tight. The product is completely protected against solid objects. It is also protected against water jets projected by a nozzle (6.3mm) from any angle.

 

 

 

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Wikipedia has a nice article on IP ratings (source: https://en.wikipedia.org/wiki/IP_Code), basically the first digit tells you the protection against dust, and the second number tells you the protection against liquid. 

First Digit - Solid Particle Protection

Level sized Effective against Description
X X means there is no data available to specify a protection rating with regard to this criterion.
0 No protection against contact and ingress of objects
1 >50 mm
2.0 in
Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part
2 >12.5 mm
0.49 in
Fingers or similar objects
3 >2.5 mm
0.098 in
Tools, thick wires, etc.
4 >1 mm
0.039 in
Most wires, slender screws, large ants etc.
5 Dust protected Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment.
6 Dust-tight No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow.

 

Second Digit - Liquid Protection

Level

Protection against

Effective against

X

0

None

1

Dripping water

Dripping water (vertically falling drops) shall have no harmful effect on the specimen

2

Dripping water when tilted at 15°

Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. 

3

Spraying water

Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect

4

Splashing of water

Water splashing against the enclosure from any direction shall have no harmful effect

5

Water jets

Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects.

6

Powerful water jets

Water projected in powerful jets (12.5 mm (0.49 in)) against the enclosure from any direction shall have no harmful effects.

6K

Powerful water jets with increased pressure

Water projected in powerful jets (6.3 mm (0.25 in) nozzle) against the enclosure from any direction, under elevated pressure, shall have no harmful effects.

7

Immersion, up to 1 meter (3 ft 3 in) depth

Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion).

8

Immersion, 1 meter (3 ft 3 in) or more depth

The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. However, with certain types of equipment, it can mean that water can enter but only in such a manner that it produces no harmful effects. The test depth and duration is expected to be greater than the requirements for IPx7, and other environmental effects may be added, such as temperature cycling before immersion.

9K

Powerful high-temperature water jets

Protected against close-range high pressure, high-temperature spray downs.

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5 hours ago, gon2fast said:

waterproof like my two wheels

Calling IP55 ”waterproof” is a bit of a stretch though. It should be resistant to low pressure directed water streams enough for it not to cause damage, but even ”Limited ingress is allowed”. The structural or practical difference between IP54 and IP55 may be extremely minor, or even just by chance.

I don’t know which parties test for the IP ratings, but as we saw with the IPS Lhotz (IP55, dust and rust everywhere, causing failures), the EUC IP ratings may not be that accurate in the first place. Maybe the manufacturer rounds the numbers up a bit, like they do for other specs as well? :lol:

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The automobile manufacturers have a similar industrial standard. It's called, "JD Power and Associates" and it is given by manufacturers to manufacturers on standards they measure themselves. The measurements are made by looking at something then assigning a value based upon how much you paid the declarer or standards.

The IP standard by wheel manufacturers is one they award to themselves. Outside of advertising, it has neither meaning nor value.

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