Kyoritsu 3125A – 5kV Digital High-Voltage Insulation Resistance Tester – Duncan Instruments Canada Ltd
KYORITSU 3125A 5kV 1TΩ Insulation Tester
KYORITSU 3125A 5kV 1TΩ Insulation Tester
KYORITSU 3125A 5kV 1TΩ Insulation Tester
KYORITSU 3125A 5kV 1TΩ Insulation Tester

Kyoritsu 3125A – 5kV Digital High-Voltage Insulation Resistance Tester (Up to 1 TΩ)

Regular price $ 1,780.00 CAD Sale

Professional-Grade Megohmmeter for High-Voltage Electrical Testing

Product Overview:
The Kyoritsu 3125A is a high-performance 5kV digital insulation resistance tester engineered for industrial and utility applications. With an insulation resistance range up to 1 TΩ (1 teraohm) and selectable test voltages from 250 V to 5000 V, this tester is ideal for checking insulation integrity in high-voltage equipment such as transformers, switchgear, cables, and rotating machinery.

Its large LCD with bar graph, built-in memory, and intuitive interface make the 3125A a top-tier instrument for electrical engineers and maintenance professionals conducting regular testing and commissioning in high-voltage environments.


Key Features:

  • Test Voltages: 250 V, 500 V, 1000 V, 2500 V, 5000 V

  • Insulation Resistance Range: Up to 1 TΩ (1000 GΩ)

  • Auto Discharge Function for operator safety

  • Dielectric Absorption Ratio (DAR) & Polarization Index (PI) testing

  • Large Backlit Digital Display with Bar Graph

  • Memory for Data Storage (up to 43 readings)

  • Timer Function for Timed Insulation Tests

  • Overload Protection on all ranges

  • IEC 61010-1 CAT IV 600 V Safety Rated


Best For:

  • High-voltage maintenance and commissioning

  • Substation and power utility testing

  • Transformer, motor, and generator insulation checks

  • Industrial reliability and predictive maintenance programs


What's Included:

  • Kyoritsu 3125A 5kV Insulation Tester

  • High-voltage test leads and alligator clips

  • Carrying case

  • Instruction manual

  • Batteries (installed)


🔍 How It Compares:

Feature Kyoritsu 3125A Fluke 1550C Metrel MI 3205
Max Test Voltage 5000 V 5000 V 5000 V
Max Resistance Range 1 TΩ 1 TΩ 1 TΩ
DAR/PI Capability ✅ Yes ✅ Yes ✅ Yes
Internal Memory ✅ Yes (43 readings) ✅ Yes (full logging) ✅ Yes (PC interface available)
Display LCD + Bar Graph LCD + Analog scale LCD + Graphical Interface
Portability Compact and rugged Larger, rugged case Bench/field hybrid unit

Customer Reviews

Based on 1 review Write a review