For example: Agilent E4440A or Anritsu 68369
Associated Research Ground Continuity Testers / Hi-Pot
Associated Research 3500D
3500D Entry-level Dielectric Withstand testers with simple PLC control

Manufacturer: Associated Research
Associated Research 4040AT
AC Hypot and Ground Continuity Test Set

Manufacturer: Associated Research
Associated Research 4050AT
4050AT AC Hipot Tester w/ Ground Tester

Manufacturer: Associated Research
Associated Research 5400DT
AC Hipot Plus Input 115VAC 50/60 HZ 1.6A 230VAC 50/60HZ 1.0A OUTPUT 0-5kvac 0-20ma

Manufacturer: Associated Research
Associated Research 5450DT
5450DT AC/DC Hipot and Ground Continuity Test Set

Manufacturer: Associated Research
Associated Research 5472
The Associated Research 5472 is a 60KVDC, 5micro ADC Hipot.

Manufacturer: Associated Research
Associated Research 7500DT
7500DT 3 in 1 Electrical Safety Compliance Tester

Manufacturer: Associated Research
Associated Research 7564SA
4-in-1 AC/DC Hipot, Insulation Resistance & Ground Bond Tester

Manufacturer: Associated Research