UL101 泄漏电流测试限值的疑问

lele11 · 发表于 2012-8-22 13:30

UL101 泄漏电流测试限值的疑问，这个4.1.1是说最大允许值based on reaction,4.1.2是说最大允许值based on body tissue burn,这两者有何区别呢？希望各位指点，谢谢！

4 Leakage Current Limits

4.1 General

4.1.1 When measured in accordance with the test method covered in this standard, the measurement indication shall not exceed the values shown in Table 4.1.

Table 4.1

Maximum allowable measurement instrument indication based on reaction

Type of appliance	Indication in MIU (for a 60 Hz sine wave leakage current, the values are approximately milliamperes, rms)
Two-wire cord- and plug connected appliance	0.50 MIU
Three-wire (including grounding conductor) cord- and plug- connected portable appliance	0.50 MIU
Three-wire (including grounding conductor) cord- and plug- connected stationary or fixed appliance	0.75 MIU

4.1.2 In addition to the limits in Table 4.1, to avoid undue risks of severe body tissue burns, the leakage current shall be not greater than 70 mA rms3, measured as V2 (volts rms) divided by 0.5 (kilohms), using the measuring instrument of Figure 5.3 with the frequency-sensitive network disconnected. (See Appendix B for the performance specifications of the modified measuring instrument).

NOTE – Because in the low frequency range, the maximum allowable current based on reaction is less than the maximum allowable current based on body tissue burn, the burn current limit generally applies only when high frequencies are involved.

yrj109 · 发表于 2012-8-22 14:12

你按不同的网络来理解，因为人体对电流的响应有几个等级，但是人体模拟网络是不会变的，只是感应网络会不一样。

faige2006 · 发表于 2012-8-23 08:48

同65的一樣.

dai7833215 · 发表于 2012-8-24 10:52

恩，分析的很对

lds08080808 · 发表于 2012-8-25 21:56

ULi泄漏与GS的有何区别

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[电机驱动] UL101 泄漏电流测试限值的疑问

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