HiAS® 743
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HiAS® 743 High Resolution Impulse Analyzing System Capturing the complete impulse enables to obtain information about the test object faster and in more detail. HiAS®743 is the tool, which utilizes latest technology high amplitude and fast time resolution to perform this task. The HiAS®743 is a multi-channel precision digital impulse analyzing system of the highest performance class. Measurement evaluation and analysis of impulse voltages and currents can be performed according to IEC 61083, IEC 60060, IEC 60076, IEC 60099, and IEC 60230, the relevant standards for High Voltage Impulse Testing. Automatic evaluation of the impulse shapes specified in the above standards, as well as a manual evaluation mode are available. The HiAS®743 is ready for integration in a complete impulse voltage test system. The system can be fully controlled by a host computer via standard interfaces or, to reduce interference effect, via an optical link. FEATURES Impulse voltage tests in industry are mainly used to control the quality of any high voltage equipment. Usually the test object is subjected to a fast voltage impulse. A defined impulse wave shape is applied to the test object. Changes in the wave-shape caused by the test object are used for detection of insulation faults. This procedure is commonly used for routine testing of transformers, bushings or other high voltage equipment. The HiAS®743 is an excellent and reliable tool for accurate measurement of all kinds of wave-shapes. Haefely Test AG also manufactures complete impulse voltage test systems to meet most requirements. This impulse generation capability plus impulse measurement offers a complete solution to modern testing needs. HiAS®743 incorporates many of our own experiences in the high voltage business, plus those of our customers. Since many years our R&D group continuously develops further the system software. Therefore this system has the most proven software in the market. Curve evaluation for example is based on databank containing hundreds of real curve data, measured in different environment and test setups all over the world. Compatibility to previous Impulse Analyzing Systems HiAS®743 / HiAS®742 and new control systems does save your investment. Old measurement data is not lost. HiAS®743 can be fully integrated into HAEFELY controls. The engineering team guarantees support, calibration etc. now and in the future. 12 bit real vertical resolution at 120 MS/s 128k memory point depth (for 12 bit data) Automatic evaluation of all common impulse shapes and their parameters Loaded with functionalities: Difference, Parameter Tolerance, FFT, Transfer, Coherence, Comparison, Step response, Smoothing, Advanced Evaluation and many more Clear documentation and reporting including, Test information, notes, grouping, etc. BENEFITS Easy, intuitive understandable and useable graphic user interface (GUI) Automatic test report generation from the integrated reporting tool with user definable layout, logo insertion, etc. Manual re-evaluation tool for all impulse parameters. Automatic hardware calibration with additional calibrator RIC422-4 (option) Easy re-calibration and system upgrade due to modular and independent hardware design. DKD certified calibration of measuring channels available. a brand of Haefely is a subsidiary of Hubbell Incorporated. Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice.

HIGH VOLTAGE TEST ■ National High Voltage Laboratories MEASUREMENT (DIGITIZING) FEATURES Real 12 bit amplitude resolution, a factor of 4 better compared to a common 10 bit system. Together with the powerful software analysis tools very detailed impulse diagnostics are possible. The effect of amplitude resolution on measurement accuracy is shown for 8, 10 and 12 bit recorders using a signal with 2 % full scale deflection. The difference between the original signal and a 12 bit recorder is Variable memory depth up to 128k data points. memory depth allows one to choose a suitable record length...

HIGH VOLTAGE TEST difference (mean - real), all parameter calculation method is fully transparent. where the individual data An Online Toolbox can be opened by a single click, which gives access to all curve related functions such as: Stepped zooming back, preview printout, print curve, copy to clipboard, recalculation (auto & guided), manual evaluation, signal processing (smoothing), measurement cursors, grid normalization, grid optimization, FFT calculation, edit related curve information, add memos, save complete measurement, save window, save data as Difference Function to subtract two...

HIGH VOLTAGE TEST Step response evaluation. Internal measurement including random interleaved sampling (RIS) and external measurements (e.g. from a giga sample scope) can be loaded Measurement & test information, user notes, grouping & sub-grouping, headers for clear documentation and reporting of saved impulses. Information can be added to a specific pulse and saved in a clear, customized data structure. ADDITIONAL FEATURES E.g. select "Shunt" and enter a terminal value of 330 A/V. A measuring circuit image, the chosen input range and the correct input connector are indicated as well as...

CALIBRATION & STANDARDS SYSTEM DESIGN Fully automatic calibration together with a (optional) Haefely reference impulse calibrator RIC 422. Full range IEC 61083 calibration with automatic reports, overnight – without further manual operations, is possible. Amplitude deviations can be entered to provide automatic correction against a nominal standard calibrator. As a result the best achievable accuracy is obtained without any further calculation. HiAS®743 System consists of a main unit, containing the system CPU, control computer, power supplies, data storage, interfaces and 4 slots for the...

TECHNICAL SPECIFICATIONS System Number of channels Printer Monitor System controller (build-in) Internal operating system 1...4 Laser printer black & white; Color laser printer optional Desktop TFT flatscreen 19” PentiumIII, 256 MB RAM Windows XP (Office Software package runs under: Windows 98, 2000, XP) Analogue Part Connections Input divider Input voltages Input ranges Overvoltage protection Overvoltage tested Input impedance Analogue bandwidth (-3dB) Triggering High voltage input LEMO (RA4250) 1 : 200 100 Vpp .. 1950Vpp 14 (factor 1.26) 2 kV 6 kVpp (1.2/50 s, 10/700 s) 2 MOhm // 20 pF 50...