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Ingress Protection Testing

Ingress Protection

The IP Code or Ingress Protection Rating is sometimes also referred to as the International Protection Rating. The IP Code consists of the letters “IP” and then either two digits or one digit and one letter and an optional letter. IP Code classifies and rates the degrees or ingress protection provided against the intrusion of solid objects of dust, water and accidental contact within mechanical castings and electrical enclosures.

The first digit indicates the level of ingress protection that the enclosure provides against access to hazardous parts and the ingress of solid foreign objects.

Level Object size protected against Effective against
0 No protection against contact and ingress of objects
1 >50 mm 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 Fingers or similar objects
3 >2.5 mm Tools, thick wires, etc.
4 >1 mm Most wires, screws, 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; complete protection against contact
6 Dust tight No ingress of dust; complete protection against contact

The second digit indicates the level of protection that the enclosure provides against access to hazardous parts and the ingress protection against water.

Level Protected against Testing for Details
0 Not protected
1 Dripping water Dripping water (vertically falling drops) shall have no harmful effect. Test duration: 10 minutesWater equivalent to 1mm rainfall per minute
2 Dripping water when tilted up to 15° Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle up to 15° from its normal position. Test duration: 10 minutesWater equivalent to 3mm rainfall per minute
3 Spraying water Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect. Test duration: 5 minutesWater volume: 0.7 litres per minutePressure: 80–100 kN/m²
4 Splashing water Water splashing against the enclosure from any direction shall have no harmful effect. Test duration: 5 minutesWater volume: 10 litres per minutePressure: 80–100 kN/m²
5 Water jets Water projected by a nozzle (6.3mm) against enclosure from any direction shall have no harmful effects. Test duration: at least 3 minutesWater volume: 12.5 litres per minutePressure: 30 kN/m² at distance of 3m
6 Powerful water jets Water projected in powerful jets (12.5mm nozzle) against the enclosure from any direction shall have no harmful effects. Test duration: at least 3 minutesWater volume: 100 litres per minutePressure: 100 kN/m² at distance of 3m
7 Immersion up to 1 m 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 m of submersion). Test duration: 30 minutesImmersion at depth of 1m
8 Immersion beyond 1 m The equipment is suitable for continuous immersion in water under conditions which shall be specified by the manufacturer. Normally, this will mean that the equipment is hermetically sealed. 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. Test duration: continuous immersion in waterDepth specified by manufacturer

The IP Code defines additional letters that can be appended to classify only the level or protection against hazardous parts by persons or additional information related to the protection of the device:

A – Back of hand
B – Finger
C – Tool
D – Wire
H – High voltage device
M – Device moving during water test
S – Device standing still during water test
W – Weather conditions

 

Mechanical Impact Resistance numbers are sometimes used to identify the energy needed to qualify a specified resistance level, which is measured in joules (J). It is important to note that mechanical impact resistance was dropped from the third edition of IEC 60529 onwards.

Keystone Compliance is an IP Code test lab specializing in expert ingress protection testing. This page lists every method and section of the standard for informational purposes. There may be methods and sections that fall outside of our scope. Contact us today to learn how we can help you meet your IP Code testing requirements.