1、 Introduction to Dust and Waterproof Testing: Dust and waterproof testing, also known as shell protection level, abbreviated as IP code, is a testing requirement formulated to prevent foreign solid foreign objects from entering the interior of the sample and causing harm to human body or equipment 2. Scope of Application and Purpose: Applicable to the protection classification of electrical equipment with a rated voltage not exceeding 72.5kV and protected by enclosures
&Nbsp&Nbsp; Purpose: To specify the protection level of the enclosure for electrical equipment: to prevent human access to hazardous components inside the enclosure; Prevent solid foreign objects from entering the equipment inside the shell; Prevent harmful effects on equipment caused by water entering the shell Thirdly, IP code 3.1. The second characteristic number of the IP code configuration is the waterproof test level. If there is none, it is represented by an "X". Level 0 does not require testing. 3.2 Elements and Meaning of IP Code Remarks: After the shell has undergone the specified waterproof level test, the water ingress situation should be checked, and the acceptance conditions should be judged according to the following requirements: if possible, the relevant product standards should specify the allowable water ingress and details of the voltage withstand test; Generally speaking, if water enters, it should not be sufficient to affect the normal operation of the equipment or disrupt safety; Water does not accumulate on insulation components that may cause leakage marks along the creepage distance; Water does not enter live parts or windings that are not allowed to operate in a damp state; Water does not accumulate near the cable head or enter the cable. If there are drainage holes in the casing, it should be demonstrated through observation that water will not accumulate and can be discharged without damaging the equipment. For equipment without drainage holes, if water accumulates and endangers live parts, relevant product standards should specify acceptance conditions 4. IP Testing Related Standards GB 4208-2008/IEC60529-2013 Degrees of Protection Provided by Enclosures (International Code for Degrees of Protection) GB 7000.1-2007/IEC 60598-1:2014 Luminaires Part 1: General Requirements and Tests EN/IEC 60335-1-2013 Safety of Household and Similar Electrical Appliances Part 1: General Requirements
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