Digital Insulation Tester IR4057-90 – Hioki

The Hioki IR4057-90 is a rugged digital insulation tester for inspecting, maintaining and troubleshooting low-voltage electrical installations. It gives fast, stable readings across a wide range of test voltages, and it’s built to handle tough jobs on site. This kit includes Bluetooth connectivity, so you can send results straight to your phone or tablet and make recording and reporting quicker and simpler.

Key features:

• Five test voltages: 50 V, 125 V, 250 V, 500 V and 1000 V DC for a wide range of low-voltage applications.
• Wide measurement range: Measures insulation resistance up to 4000 MΩ (at 1000 V).
• Fast PASS/FAIL comparator: A judgment in about 0.3 seconds, with audible and visual alerts for quick repeat testing.
• Bluetooth connectivity: The included Z3210 wireless adapter sends results to the free GENNECT Cross app on iOS or Android.
• Continuity testing: 200 mA continuity check for verifying earth and bonding conductors.
• Built-in AC/DC voltmeter: Measures up to 750 V, which makes it useful for solar PV and electric vehicle systems.
• Rugged, drop-proof design: Survives a 1 m drop onto concrete.
• Safety rated: CAT III 600 V and compliant with EN61557.
• Weight: Approx. 640 g, including batteries but not the test leads.
• Dimensions: Approx. 159 W × 177 H × 53 D mm, not including protrusions.

Standards:

• IEC/EN 61010-1 (AS 61010.1-2003 (R2016)): General safety requirements for electrical test, measuring and laboratory equipment.
• CAT III 600 V.
• IEC/EN 61010-031: Safety requirements for hand-held probe assemblies and test leads used for electrical measurement and testing.
• EN 61557: Performance and safety requirements for testers that measure insulation resistance, continuity and similar protective measures on low-voltage installations.
• CE/UKCA marking (RCM – Regulatory Compliance Mark): Product complies with the electrical safety and EMC rules