主要规格：

规格额定电压        测量上限（MΩ）           有效测量范围的准确度等级                 备注
100V                        200                        0.5-20 ⑸⑽  
                              100                         5-20 ⑸⑽
                              20                          0.1-10 ⑸⑽
250V                       500                         1-50 ⑸⑽  
                             250                          0.5-20 ⑸⑽  
    
500V                       1000                       2-100 ⑸⑽                       起始为1MΩ 
                            1000                       2-100 ⑸⑽                      起始为1MΩ
                              500                        1-50  ⑸⑽                        起始为1MΩ
1000V                      2000                       5-200 ⑸⑽                       起始为3MΩ
                             2000                       5-200 ⑸⑽                        起始为3MΩ
                             1000                       2-100 ⑸⑽                        起始为3MΩ
2500V                     5000                       10-500 ⑽⒇                       起始为5MΩ                              5000                      10-500 ⑽⒇                       起始为5MΩ 
                            2500                       5-200  ⑽⒇                        起始为5MΩ

注：0和∞刻不大于标尺全长的1%

技术参数：

1.ZC-7型绝缘电阻表的各项性能符合GB7676-98（直接作用模拟指示电测量仪表用其附件）的技术要求及ZBN21012（绝缘电阻表）技术要求.
2.仪表的基准值为指示值.
3.仪表的基本误差以基准值的百分数表示，基本误差的极限值不大于相应准确度的等级值。0及∞刻度以标尺长度的百分数表示，其极限不大于标尺全长的1%