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Duncan Instruments calibrates and supports the Kyoritsu KEW 3025B – Digital High-Voltage Insulation Tester (Up to 2.5 kV) right here in Canada.
Whether you need annual certification, repairs, or help interpreting your test results — our expert
technicians are ready to help.
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This is a precision instrument. If you’re unsure which model fits your application or need purchasing documentation, just ask — we’re happy to help.
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Kyoritsu KEW 3025B – Digital High-Voltage Insulation Tester (Up to 2.5 kV)
$ 1,554.28 CAD
Upgraded replacement for Upgraded replacement for model 3025A.
Kyoritsu KEW 3125B High Voltage Insulation Resistance Tester – 5kV, USB, CAT IV
The KEW 3125B is a powerful 5kV insulation resistance tester designed for professionals who demand reliable performance in high-voltage environments. It combines fast measurement, modern safety features, and a USB interface for easy data transfer—everything needed for industrial, utility, and commissioning work.
What it does:
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Measures insulation resistance up to 1 TΩ with selectable test voltages (500V to 5kV)
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Provides reliable results for cables, transformers, motors, and switchgear
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Includes USB communication for logging and reporting
Who it's for:
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Electrical contractors
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Industrial maintenance teams
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Utility and commissioning engineers
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Anyone upgrading from KEW 3025A
Why it's better:
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Improved measurement accuracy
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Modern safety design (CAT IV 600V)
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Auto-discharge and timer functions
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USB output standard
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Enhanced screen readability and faster response
✅ Technical Specifications:
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Test Voltages: 500V / 1000V / 2500V / 5000V
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Insulation Resistance Range: 0.01 MΩ to 1 TΩ
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Short-Circuit Current: 1.5 mA max
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Display: Dual digital with bar graph
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Power Supply: Rechargeable battery or AC adapter
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Safety Rating: IEC 61010-1 CAT IV 600V
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Data Output: USB
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Accessories: Test leads, alligator clips, carrying case, USB cable
Full specifications and manuals available from the manufacturer:
Kyoritsu KEW 3205B on KEW Japan website (in English)