What Is IP & IK Definition?

IP Rating are defined as a number IP XX indicating the level of ingress protection provided by the luminaire enclosure. 

IP ratings are listed as IPXX where the first X indicates the degree of protection against solid objects and the second X indicates the degrees of protection against water. A luminaire or lighting component with a rating of IP66 is dust-tight and protected against powerful water jets. 

Degrees of Protection Against Solid Objects

IP0X	Non-protected
IP1X	50mm diameter and greater
IP2X	12.55mm diameter and greater
IP3X	2.5mm diameter and greater
IP4X	1.0mm diameter and greater
IP5X	Dust-protected
IP6X	Dust-tight

Degrees of Protection Against Water

IPX0	Non-protected
IPX1	Vertically falling water drops
IPX2	Vertically falling water drops with enclosure titled
IPX3	Spraying water
IPX4	Splashing water
IPX5	Water jets
IPX6	Powerfur water jets
IPX7	Temporary immersion
IPX8	Continuous immersion

IK Ratings are defined as a number IK XX indicating the level of impact protection provided by the luminaire enclosure. 

The IK Rating scale identified the ability of an enclosure to resist impact energy levels measured in joules (J) IEC 62262 specififies how the enclosure must be mounted for testing, the atmospheric conditions required, the quantity and distribution of the test impacts and the impact hammer to be used for each level of IK rating.

IK00	Non-protected
IK02	0.2J
IK03	0.35J
IK05	0.5J
IK06	0.7J
IK07	2J
IK08	5J-10J
IK10	20J