KYORITSU KEW 3025B Digital High-Voltage Insulation Tester | 250 / 500 / 1000 / 2500 V, up to 100 GΩ, PI / DAR, short-circuit current 1.5 mA

KYORITSU KEW 3025B Digital High-Voltage Insulation Tester: 2500 V, PI / DAR Diagnostics

Overview

The KEW 3025B is a KYORITSU digital high-voltage insulation tester for insulation diagnostics on motors, cables, transformers and similar equipment; it calculates the polarization index (PI) and dielectric absorption ratio (DAR). It provides a filter function to reduce noise interference, a live-circuit warning and automatic discharge after testing. The KEW 3125B in the same series adds a 5000 V range and measures up to 1000 GΩ; please request a separate quotation.

Key Specifications

• Test voltage and range: 250 V: 0.0–100.0 MΩ; 500 V: up to 1000 MΩ; 1000 V: up to 2.00 GΩ; 2500 V: up to 100.0 GΩ
• Accuracy: ±5%rdg±3dgt
• Short-circuit current: 1.5 mA
• Voltage measurement: AC 30–600 V (50 / 60 Hz), DC ±30–±600 V, ±2%rdg±3dgt
• Display: Large display with bar graph and backlight
• Standards: IEC 61010-1, IEC 61010-2-030 CAT IV 300 V / CAT III 600 V; IEC 61010-031
• Power and weight: DC 12 V (8 × C batteries); 177 × 226 × 100 mm, approx. 1.7 kg (including batteries)

Applications

• PI / DAR diagnostics of insulation degradation in motors, cables and transformers.

Specifications per the KYORITSU English-site KEW 3025B and KEW 3125B product pages and catalogs (retrieved 2026-10-21).