Kewtech KEW3128 12KV High Current Insulation Tester

Kewtech KEW3128 12KV High Current Insulation Tester

What is the Kewtech KEW3128 High Voltage Insulation Tester?

The Kewtech KEW3128 is a 12 kV high-voltage insulation resistance tester designed for UK electrical engineers, HV technicians and industrial maintenance teams carrying out advanced insulation testing on large and high-capacitance systems. It delivers fast, stable results on cables, transformers, motors, generators and switchgear where standard 5 kV testers are no longer sufficient.

With test voltages from 500 V up to 12 kV, insulation resistance measurement to 35 TΩ and a 5 mA short-circuit current, the KEW3128 allows confident condition assessment and trend analysis on critical electrical assets. The large graphical display plots insulation resistance and leakage current over time, helping technicians quickly identify insulation deterioration before failures occur.

How does the KEW3128 support advanced insulation diagnostics?

The KEW3128 goes beyond basic insulation testing with built-in diagnostic test functions including Polarisation Index (PI), Dielectric Absorption Ratio (DAR), Dielectric Discharge (DD) and Step Voltage testing. These tests help UK technicians assess insulation ageing, moisture ingress and multi-layer insulation faults with greater confidence.

Internal memory stores up to 40,000 test results, while included PC software allows downloading, graphing and reporting of data for compliance documentation and maintenance records. Dual power operation via rechargeable battery or mains supply makes it equally suitable for site commissioning and workshop analysis.

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