High-precision instruments for safety, compliance, and electrical verification

HIOKI precision instruments support specific electrical testing needs in R&D, production, and quality assurance. From protective earth testing and insulation resistance to ultra-high-resolution DC voltage measurement, these tools are built for accuracy and reliability in demanding environments.

The 3157-01 AC Ground Bond Tester enables high-current ground continuity testing in accordance with safety standards. The DM7275 Precision DC Voltmeter delivers 7½-digit resolution, nano-volt sensitivity, and long-term stability for high-precision voltage testing in labs and automated systems. The ST5520 Insulation Tester performs fast insulation resistance tests with contact check and auto-discharge – ideal for integration in electrical safety test systems.

Explore HIOKI’s solutions for precision voltage measurement and electrical safety testing.

3157-01

3157-01 - AC Ground Bond Tester

The Hioki 3157 is an AC ground bond tester designed for testing the protective circuits of electrical equipment, including industrial machinery, medical devices, and measuring instruments. It operates with a constant current system ranging from 3 to 31 A and provides precise resistance measurements. The device features useful functions such as a timer, pass/fail comparator, and memory for up to 20 settings. Additionally, it is equipped with multiple interfaces for seamless integration into various systems. Technical Details: Current range: 3 to 31 A (resolution: 0.1 A) Open terminal voltage: max. 6 VAC Max. output power: 130 VA Resistance measurement range: 0 to 1800 mΩ (resolution: 0.001 Ω) Functions: Timer, pass/fail comparator, memory function (up to 20 settings) Interfaces: EXT I/O, Ext SW, GP-IB, optional RS232C

€2,528.00*

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DM7275-03

DM7275-03 - Precision-DC-voltmeter

Precision DC Voltmeter, DC V only, measure DC Voltage and temperature simultaneously, 7-1/2 digit resolution, 1-year 20ppm accuracy, built-in EXT I/O, LAN, USB and RS-232C interface

€1,728.00*

ST5520

ST5520 - Insulation Tester

The ST5520 is an insulation resistance tester designed for fast, accurate testing in production lines. It is ideal for high-throughput environments where rapid, reliable measurements are crucial. The tester offers a flexible voltage range, advanced safety features, and multiple modes to ensure high-quality insulation checks. Technical details: Completes tests in as little as 50 ms, significantly improving takt times compared to legacy models. Quick discharge of residual voltage, improving efficiency and safety. Ensures proper contact with the device under test to avoid erroneous measurements. The test voltage is adjustable from 25 V to 1000 V in 1 V increments, allowing for versatile applications. Detects micro-short circuits before insulation testing, preventing false passes. Freely set upper and lower limit values to streamline assessments. Allows users to save up to 10 measurement conditions for quick retrieval with Panel Save/Load Function. Enables integration with automated systems and data acquisition via PC or PLC with External I/O and RS-232C Support.

€1,358.00*

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