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Impedance Networks

IEC61000-3-3 and IEC61000-3-12 Flicker Impedance Networks

N4L have developed a range of IEC61000-3-3 and IEC61000-3-12 Compliant Impedance Networks designed specifically for compliant flicker testing, the range spans from 16Arms units to meet the IEC61000-3-3 standard up to 75Arms 3 phase units to meet IEC61000-3-12. Our impedance networks are force air cooled to ensure minimal temperature drift under high loads and feature air core inductors which prevent saturation at high current.

Model Phases Line Resistance Neutral resistance Height    

IMP161 Single Phase 16Arms IEC61000-3-3 1
240mΩ  160mΩ  4U  
IMP163 Three Phase 16Arms IEC61000-3-3
240mΩ 160mΩ  4U  
IMP323 Three Phase 32Arms IEC61000-3-12 3 240mΩ 160mΩ  6U
IMP753 Three Phase 75Arms IEC61000-3-12 3 240mΩ 
160mΩ  8U


Caltest Instruments Ltd

4 Riverside Business Centre

Walnut Tree Close


Surrey GU1 4UG

United Kingdom

Tel: +44 (0) 1483 302 700

Fax: +44 (0) 1483 300 562

Email: sales@caltest.co.uk

Caltest have been providing power sources and test instrumentation solutions for over 17 years and are proud to represent a number of industry leading manufacturers.