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Luminaire Ingress Protection Testing

IEC 60598 Ingress Protection of Luminaires

The IEC 60598 test standard provides specific requirements for luminaires. A luminaire is defined as an electric light source for operation from supply voltages up to 1,000 volts. IEC 60598-1 speaks to many tests for luminaires. This document covers only the ingress protection section of the standard. For information about the who standard, please visit our IEC 60598-1 Testing page.

A luminaire is defined as an apparatus that distributes, filters or transforms the light transmitted from one or more lamps. The luminaire includes all the parts necessary for supporting, fixing and protecting the lamps. The luminaire also includes the circuit auxiliaries together with the means for connecting them to the supply. It however, does not include the lamps themselves.

Ingress Protection Testing

IEC-60598 requires ingress protection testing, also known as IP Code testing. This tests the luminaires for the degree of protection it provides from the ingress of dust, solid objects and moisture. The test standard states, that the enclosure of a luminaire shall provide the degree of protection against the ingress of dust, solid objects and moisture in accordance with the classification of the luminaire and the IP number marked on the luminaire.

To gain a thorough understanding of the IP Code, please visit our IP Code rating chart.

It is important to note that before the tests for the second characteristic numeral, the luminaire complete with lamp(s) shall be switched on and brought to a stable operating temperature at rated voltage. The lone exception is IPX8. The water for the tests shall be at a temperature of 15 °C ± 10 °C.

IEC 60598 ingress protection testing states that rough service luminaires shall have protection against ingress of solid objects and moisture of at least IP54.

IEC 60598 Product Classes

IEC 60598 Class I Luminaire:

A Class I Luminaire offers protection against electric shock that does not rely on basic insulation only. These luminaires include an additional safety precaution. This precaution is provided for in the connection of accessible conductive parts. This connection is to the protective (earthing) conductor in the fixed wiring of the installation. This is completed in such a way that accessible conductive parts cannot become live in the event of a failure of the basic insulation

IEC 60598 Class II Luminaire:

A Class II Luminaire also offers protection against electric shock that does not rely on basic insulation only. However, in this class of luminaire, the additional safety precautions are double insulation or reinforced insulation. There are no provisions for protective earthing or reliance upon installation conditions.

Examples of these luminaires include items having a durable and substantially continuous enclosure of insulating material. This enclosure envelopes all metal parts with the exception of small parts such as nameplates, screws and rivets. These are typically isolated from live parts by insulation at least equivalent to reinforced insulation. This type of luminaire is called an insulation encased class II luminaire.

Another example of a Class II Luminaire is a luminaire having a substantially continuous enclosure of metal. This enclosure is insulated from live parts by insulation at least equivalent to double or reinforced insulation. Such a luminaire is called a metal-encased class II luminaire.

The final type of IEC 60598 Class II Luminaire is a luminaire which is a combination of the previous two types mentioned.

IEC 60598 Class III Luminaire.

An IEC 60598 Class II Luminaire offers protection against electric shock relying on supply at safety extra-low voltage (SELV). These luminaires do not generate voltages higher than those of the SELV level.

Definitions of Luminaires.

Adjustable Luminaires

Adjustable luminaires are luminaires which can be turned or moved by means of joints. The movement can include raising and lowering devices, telescopic tubes or similar devices. An adjustable luminaire may be fixed or portable.

Basic Luminaires

A basic luminaire is defined as the smallest number of assembled parts that can satisfy the requirements of any of the parts of IEC 60598-2.

Combination Luminaires

A combination luminaire consists of a basic luminaire in combination with one or more parts which may be replaced by other parts. These luminaires can also be used in a different combination with other parts and changed either by hand or with the use of tools.

Fixed Luminaires

A fixed luminaire is a luminaire which cannot easily be moved from one place to another. This limited movement is either because the fixing is such that the luminaire can only be removed with the aid of a tool, or because it is intended for use out of arms reach. In general, fixed luminaires are designed for permanent connection to the supply, but connection may also be made by means of a plug or similar device.

General Purpose Luminaires

A general purpose luminaire is a luminaire which is not designed for a special purpose. Examples of these luminaires include pendants, some spotlights and certain fixed luminaires for surface or recessed mounting.

Portable Luminaires

A portable luminaire is a luminaire which, in normal use, can be moved from one place to another while connected to the supply. These include luminaires for wall mounting provided with a supply cord for connection to a plug. These also include luminaires which may be fixed to their support by means of a wing screw, a clip or a hook so that they can easily be removed from their support by hand.

Recessed Luminaires

A recessed luminaire is intended by the manufacturer to be fully or partly recessed into a mounting surface. The term recessed applies both to luminaires for operation in enclosed cavities and to luminaires for mounting through a surface such as a suspended ceiling.

Special Purpose Luminaires

Examples of special purpose luminaires are those for rough usage, photo and film applications and swimming-pools.

Scope of Testing

To complete the testing, the IEC 60598 test lab must complete a number of tests including:

  • Dust ingress tests
  • Solid objects ingress tests
  • Moisture ingress tests
  • Humidity tests
  • Insulation resistance tests
  • Electric strength tests
  • Touch current tests
  • Protective conductor current tests
  • Electric burn tests
  • Creepage distances tests
  • Creepage clearances tests
  • Endurance tests
  • Thermal tests
  • Heat resistance tests
  • Fire resistance tests
  • Tracking resistance tests

Keystone Compliance is an ISO-170925 accredited test lab with expertise in IEC 60598-1 testing. Our capabilities include ingress protection testing, EMC testing, vibration testing and temperature testing. We can complete testing to all ingress protection code standards. We have significant luminaire vibration and luminaire temperature testing and thermal shock experience.

Contact us to learn how we can assist with luminaire compliance testing.