HIOKI 3157-01 AC Grounding HiTester

Benefits of the 3157-01 Protective Ground Tester for Standards Certification

• Ground bond safety tester in compliance with international safety standards and laws.
• 0 to 1.8 Ω measurement, testing current up to 31 A.
• Feedback control system: Stable current even with a fluctuating load.

HIOKI 3157-01 AC Grounding Tester

The Hioki 3157 is an AC ground bond tester. The device is used 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 output current.

• AC grounding/protective ground tester.
• 0 to 1.8 Ω measurement.
• Testing current up to 31 A, for 100 to 120 or 200 to 240 VAC.
• Easily perform protective continuity testing in compliance with international safety standards and laws:
  1. Protective continuity resistance measurement for medical devices and general electrical devices).
  2. HGround connectivity testing when installing electrical machine tools and distribution panels.
  3. Testing of protective grounding and isopotential grounding work for medical equipment.
  4. Evaluation of contact status using large currents.
• Feedback control system that is capable of applying a stable current even with a fluctuating load.
• Soft-start function that checks the connection to the device under test before applying the current.

Model Overview