Model

HP-6688F

HP-6688B

Insulation tester

2500V

5000V

Testing Rating Voltage

250V/500V/1000V/2500V

500V/1000V/

2500V/5000V

Output voltage

90~110% Testing Rating Voltage

Scale

1MΩ~20GΩ

1MΩ~200GΩ

Minimum division

0.01MΩ

Accuracy

1MΩ~200MΩ: ± ( 3.0%+5 )

200MΩ~10GΩ: ± ( 5.0%+5 )

10GΩ~200GΩ: ± ( 10.0%+5 )

Scale of AC voltage

1~750V

Accuracy

± ( 2.0%+5 )

Resolution

1V

Frequency response

40~400Hz