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he creepage distance test card is designed and manufactured according to GB/T 16935.1-2008/IEC 60664-1:2007, which is mainly used to test the creepage distance and electrical clearance of electrical accessories such as electrical products.
30The dimensions：1.0，1.05，1.1，1.2，1.25，1.3，1.4，1.5，1.6，1.7，1.8，1.9，2.0，2.1，2.2，2.4，2.5，2.8，3.2，3.6，4.0，4.2，4.5，5.0，5.6，6.3，7.1，8.0，9.0，10.0
10The dimensions：1.0，2.0，2.5，2.8，3.2，3.6，4.0，5.0，5.6，6.3
Measurement steps of electrical clearance:
U determine the peak working voltage and effective value;
U determine the supply voltage of the equipment and the type of power supply facilities;
U determine the transient overvoltage entering the device according to the overvoltage category;
U determine the pollution level of the equipment (general equipment is pollution level 2);
Determine the type of insulation (functional insulation, basic insulation, additional insulation, reinforced insulation) for electrical gap bonding.
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