Kyoritsu KEW 3125B 5kV High Voltage, 1TΩ Insulation Resistance Digital Insulation Tester

SKU

KEW-3125B

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$1,077 $1,026

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Key Features

Insulation resistance measurement up to 1 TΩ with high accuracy
Wide test voltage range from 250V to 5000V selection
Built-in PI (Polarization Index) and DAR diagnostic functions
Advanced safety features including live voltage warning & auto discharge
Large backlit display with bar graph and noise filter for stable readings

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Product Overview

Overview of Kyoritsu KEW 3125B

The Kyoritsu KEW 3125B High Voltage Insulation Tester is a professional-grade instrument designed for accurate insulation resistance testing in high-voltage electrical systems. It is widely used in industrial maintenance, power distribution, and electrical commissioning work. Built for durability and precision, it supports demanding field applications with stable performance and advanced diagnostic features.

Wide Voltage Testing Capability

This tester offers a broad test voltage range from 250V up to 5000V, making it suitable for diverse electrical environments and equipment types. It can measure insulation resistance up to 1TΩ, allowing technicians to assess both low and high resistance systems effectively. Such flexibility makes it a dependable tool for complex electrical diagnostics.

Advanced Diagnostic Functions

The KEW 3125B is equipped with intelligent diagnostic features including Polarization Index (PI) and Dielectric Absorption Ratio (DAR). These functions help in evaluating insulation quality more deeply rather than just providing basic resistance values. This makes it especially useful for predictive maintenance and long-term asset reliability assessment.

Safety and User-Friendly Design

Safety is a key focus of this instrument, with compliance to IEC 61010 standards (CAT IV 300V / CAT III 600V) ensuring secure operation. It also includes a large backlit display, live voltage warning, and automatic discharge after testing. These features enhance operator safety while improving usability in low-light or high-risk environments.

Industrial Applications and Build Quality

Designed for rugged field use, the KEW 3125B is ideal for power plants, industrial machinery, and cable testing environments. Its robust build, stable measurement filtering, and ergonomic design make it suitable for continuous professional use. This combination of accuracy, durability, and functionality positions it as a trusted tool for electricians and engineers.