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HiAS 744

by Haefely Hipotronics 

Catalog ID: HiAS 744

High Resolution Impulse Testing Equipment

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The HiAS™ 744 is the unique tailor made impulse analyzer for the industry. HAEFELY HIPOTRONICS, the pioneer company for impulse testing since 1904, has been continuously developing and upgrading high-voltage impulse measuring/analyzing solutions over the years. The latest in a long line of distinguished impulse analyzers is the Highest Resolution Impulse Analyzing System HiAS™v 744. HAEFELY HIPOTRONICS has set a new benchmark with unbeatable performance. The new front-end solution provides a 16-bit resolution at 250 MS/s with the highest measurement accuracy. Software, which has been upgraded to suit the new hardware, retains the comfortable interface proven and tested by many hundreds of satisfied users, and continues to be compatible with the former versions of data files of the HiAS™, allowing data comparison to older measurements.The optically decoupled front end provides complete galvanic isolation between control room and test field. It thus affords the personnel the highest safety level and in addition minimizes ground loop, resulting in a reduced interference coupling.

  • 16-bit resolution at 250 MS/s, 100 MHz analog bandwidth
  • 2 Channels digitizer unit, can be cascaded
  • 2000 V<
  • subpk<
  • /sub down to 5 V<
  • subpk<
  • /sub analog input range with LEMO 4S connector
  • 4th Generation digitizer
  • Exceeds latest IEC 61083-1, -2, IEC 60060-2, IEEE Std. 4 and related standards
  • Mains powered
  • Optically decoupled front-end solution

The highest measurement accuracy in the market;Excellent interference immunity & safe operation;Integrated solution, no additional divider necessary, compatible with any divider ratio;Synchronous multi-channel record;Compliant, advanced, state-of-the-art solution;Software &solution proven by many hundreds of users;No battery pack or recharge needed


  • Software packages: Office package,Older Ed. IEC Standard evaluation package, Comparison package, Transfer & Coherence Function package
  • HiASTM 744-2X (extension to 4 channels): HiAS 744-2S, HiAS 744-2REF
  • Rugged fiber optic cable: various length available: 5, 20, 30, 40 and 60 m
  • Lemo cable: various length available: 1, 1.6, 10, 15, 20, 30 and 60 m
  • Divider: refer to our Divider Series CS, CR, CZ, RCZ, R, RCR
  • Shunt: refer to our Shunt Series SH-H, SH-Q, SH-R
  • Laptop package: laptop 15” with HiASTM software installed
  • Industrial PC package: Industrial PCI 811b, 24” screen, QWERTZ keyboard, mouse, HiAS software installed
  • Impulse Analyses on
  • Power Transformers
  • Instrument Transformers
  • Bushings
  • Capacitors
  • Circuit Breakers
  • Surge Arrestor