IPX5 and IPX6 classify resistance to direct, pressurized water streams, distinguished by the nozzle size and flow rate used during testing

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Second Characteristic Numeral 5 and 6: Pressurized Water Jet Tests

Degrees IPX5 and IPX6 define the enclosure’s capability to withstand forceful water jets, simulating conditions like hosing down. Both tests utilize a standard hose nozzle (Figure 6) and require spraying the enclosure from all practicable directions.

IPX5 (Protected against water jets): This test uses a nozzle with an internal diameter of 6.3 mm. The required delivery rate is 12.5 l/min ± 5%. The core of the stream should be approximately 40 mm in diameter at 2.5 m distance from the nozzle.
IPX6 (Protected against powerful water jets): This test utilizes a larger nozzle with an internal diameter of 12.5 mm. The delivery rate is significantly higher at 100 l/min ± 5%. The core of the stream should be approximately 120 mm in diameter at 2.5 m distance.

The water pressure is adjusted solely to achieve the specified delivery rate. For both levels, the nozzle must be positioned between 2.5 m and 3 m from the enclosure surface.

The duration of the test is determined by the surface area of the enclosure: 1 minute per square meter of enclosure surface area likely to be sprayed, with a minimum duration of 3 minutes. The acceptance criteria stipulate that water projected in jets shall not have harmful effects, meaning ingress must not interfere with safety, cause tracking, or reach parts not designed to operate wet.

IEC 60529 IPX1/IPX2 Drip Box Water Test Chamber | Vertical & 15° Tilted Dripping Water Ingress Protection Verification Equipment

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The first characteristic numeral (1-4) simultaneously classifies protection against human access using specific probes and against the physical ingress of similarly sized solid objects

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The IP Code uses a mandatory two-numeral system, IPXX, optionally extended by supplementary letters to indicate specific protection levels and test conditions

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IEC60529 Brief Introduction to IP Code

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Immersion protection (IPX7/8) relies on static pressure resistance, with IPX8 test conditions requiring prior agreement and being more severe than temporary immersion (IPX7).

Second Characteristic Numeral 7 and 8: Immersion Protection and Multiple The degrees of protection IPX7 and IPX8 address the capability of an enclosure to withstand the static pressure and saturation effects of being submerged in water. It is critical to understand the rule governing versatility: an enclosure designated IPX9 only is considered unsuitable for exposure…

TESTING

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