HIOKI, Ground Bond Tester, Electrical Safety Tester

HIOKI 3157 AC Grounding HiTester
Protective Ground Tester Indispensable for Standards Certification
  The Hioki 3157 is an AC ground bond tester designed for protection circuit testing of a wide range of electrical equipment, including industrial machinery, medical equipment, and measuring instruments using a constant current system, enabling it to provide stable