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ZC29B-2测量范围Ω 0～1 最小分度值Ω 0.01测量范围Ω 0～10最小分度值Ω 0.1测量范围Ω 0～100 最小分度值Ω 1, 2.辅助接○地电阻影响改变量，当辅№助接地电阻由500Ω改变至下表规定值时，其允许改变量不应超过其表中规定值。辅助接地电阻(Ω) 0 1000 2000 5000 允许改变量用于等级指数的百分数表示(%) 100 100 100 200
