对直流系统常用的几种接地电阻测试方法如交流法、直流漏电流法等进行了比较分析，指出了它们在使用中的缺点。
After comparing and analyzing several conventional insulating resistance measuring method such as AC method, DC creepage method and so on, their shortcomings in use are pointed out.
对直流系统常用的几种接地电阻测试方法如交流法、直流漏电流法等进行了比较分析，指出了它们在使用中的缺点。
After comparing and analyzing several conventional insulating resistance measuring method such as AC method, DC creepage method and so on, their shortcomings in use are pointed out.
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