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IP VFD Enclosure Ratings

Posted by Trevor Fullwood 20/03/2014 0 Comment(s)

The Ingress Protection Rating (IP) consists of the letters IP followed by two digits. IP Code classifies and rates the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in mechanical casings and with electrical enclosures.

Solid Particle Protection (First Digit)


Object Size Protected Against

Effective Against



No protection against contact and ingress of objects



Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part



Fingers or similar objects



Tools, thick wires, etc.



Most wires, screws, etc.


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


Dust Tight

No ingress of dust; complete protection against contact


Liquid Ingress Protection (Second Digit)


Protected Against

Testing For


Not Protected



Dripping water

Dripping water (vertically falling drops) shall have no harmful effect.


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.


Spraying water

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


Splashing water

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


Water jets

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


Powerful water jets     

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


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).  


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.    


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