The KIT 4.0 is a high voltage system made of easily configurable elements. It is highly modular and is the ideal tool kit for conducting experiments in a university and in an R&D lab. A variety of experiments are possible with the generated AC, DC, and impulse voltages.The Haefely High Voltage Construction KIT 4.0 combines state of the art technology with ease of use, offering variable frequency experiments to students and is certified safety SIL 3.It integrates a frequency converter front end, digital oscilloscope for voltage and current measurements and completely refreshed accessories set. All components have their own NI LabVIEW function block, making the KIT modular in software as well as in hardware.The configuration is built up by inserting different KIT elements into connection cups or floor pedestals to form a self-supporting arrangement.
Haefely SSG 200-180 / 100-150 is used for exponential current impulse ECI 1/20us, 4/10us, 8/20us and lightning current impulse LCI 10/350us applications with impulse current amplitude up to 200kA.
RSKF is a mobile and easy to use solution based on the latest technology in frequency converters for testing up to 500 kV cable class. The reactor is made from best quality flat stacked laminations with fixed air gaps and is designed to have a very low loss.The RSKF is a modular system and can be combined in parallel and series configuration for higher current or voltage requirement. It allows easy integration with existing fixed-gap reactors (even non-Haefely reactors). Integration can be made with Haefely controls as master and non-Haefely systems as slave.Larger installation can be made with Haefely trailers as master and non-Haefely trailers as slave, such as 2S2P (2 series and 2 parallel) or 2S4P (2 series and 4 parallel) setup would be possible with only 2 trailers from with Haefely. The system's low noise level also enables partial discharge measurement if required.
Our ACS/PSZ AC Dielectric Test Systems are specifically designed for test applications which require a stable output voltage, even if the load may change during testing. For example for heavy corona, wet tests or pollution tests to name a few. These systems are also especially useful for when the load is inductive, such as inductive voltage transformers.Depending on our customer's specific needs, it's possible to stack several transformers - allowing us to reach very high voltages while also taking up very little valuable floor space.
Haefely offers several different types of control units for our AC dielectric test. These controls are designed for a number of test applications.AC dielectric testing is a proven technique for verifying insulation integrity in electrical apparatus. As electrical apparatus such as cable, switchgear, transformers, aerial lift equipment, and other insulating devices are pushed to the limits, higher voltage testing is required to qualify the finished product. Haefely has been manufacturing AC dielectric test equipment for over 50 years and continues to provide the industry's most accurate and reliable AC hipots.
Our PSK AC Dielectric Test Systems are specifically designed for test applications which require a stable output voltage, even if the load may change during testing. For example for heavy corona, wet tests or pollution tests to name a few. These systems are also especially useful for when the load is inductive, such as inductive voltage transformers.This system allows for a variable duty cycle and includes the option to add radiators or forced oil-cooling for extended duty cycles. The PSK systems are optimized for indoor or outdoor tests with long duration or continuous duty cycles.
The Haefely 9230 high voltage capacitor consists of a modular HV capacitor with appropriate coupling impedance fitted in for partial discharge measurements.The high voltage capacitor is a part of the partial discharge measuring circuit. A closed loop for the high frequency PD signals is established between the test object and the coupling capacitor. The PD pulses are then captured by the measuring impedance and brought to the PD detector.
9230/20/1-PD - Coupling capacitor 20 kV for Partial Discharge MeasurementThe coupling capacitor (PSF - Power Separation Filter) type 9230/20/1-PD includes in a compact design the high voltage capacitor, the high voltage filter and the measuring impedance. It is optimized for measuring partial discharges together with the PD detector DDX 9121b.An incorporated half-T filter on the high voltage electrode attenuates the interferences coming from the power supply and increases the sensitivity of the PD measuring circuit. The filter is protected from overvoltage by a mechanical spark-gap.
9230/30/9-PD - Coupling capacitor 30 kV for Partial Discharge MeasurementThe coupling capacitor (PSF - Power Separation Filter) type 9230/30/9-PD includes in a compact design the HIGH VOLTAGE CAPACITOR, the high voltage filter and the measuring impedance. It is optimized for measuring partial discharges together with the PD DETECTOR DDX 9121BAn incorporated half-T filter on the high voltage electrode attenuates the interferences coming from the power supply and increases the sensitivity of the PD measuring circuit. The filter is protected from overvoltage by a mechanical spark-gap.
Distribution transformers are "mass production equipment"; high testing-throughput is a must without compromising quality. Our DTTS aims at a highly automated test procedure using well-prepared sequences and minimal manual intervention to keep the test duration of a single transformer as short as possible and to avoid human errors.
The PTTS - Power Transformer Test System is designed for routine testing of power transformers. All supported tests are performed in conformity with IEC 60076 and IEEE/ANSI C57.12.90. Test system consists on a state of the art frequency converter based power supply, a multi- tapped step-up transformer, a capacitor bank and a loss measurement system.
The TMS 580 is a computer controlled high precision measuring system for power transformers. The system has distinguished itself in the rugged environment of the transformer test facility. The design ensures that its control and instrumentation function circuits remain unaffected by interference fields. There is also a Wattmeter function to perform quick and easy measurements without any additional calculations. The measuring data are accessible from other host systems for further processing.
The SGDA impulse generators are the perfect solution for carrying out impulse tests on HV or UHV cables (5 kJ version) as well as on MV and HV power transformers (10 kJ version). Their small footprint and stable design meet the needs of universities and R&D centers. And with its unique Delta-structure, the SGDA impulse generators are easy to transport and erect onsite.The SGDA series are available for 5 or 10 kJ stage energy, with total charging voltages from 400 kV up to 3000 kV. Also, this system features the lowest internal inductance ever achieved and is well-suited for transformer manufacturers.
The SGSA impulse generator is the smallest of its range. They are recommended for medium voltage, small power transformer manufacturers and other general purpose impulse testing switchgears, bushing, etc.SGSA impulse test systems can be used to generate impulse voltages simulating lightning strikes and switching surges. Applications covered include testing according to IEC, ANSI/IEEE as well as other international standards. The basic system can be upgraded in various ways for special tests and for greater ease of operation. A number of additional circuits and components allow users to further optimize tests on different kinds of high voltage test objects.
The sophisticated design of the SGVA series considers all requirements of impulse voltage tests imposed by industry and research. This series offers reliable and accurate triggering- on account of its patented parallel spark gap leading to low impulse circuit inductance. Resistors are distributed within the generator, stored in easily-accessible compartments, accessible trough platforms and internal ladders for rapid stage access and interchangeability. An integrated base frame carries both the generator and the charging rectifier.
Haefely line of chopping or sphere gaps can be used for either AC or DC voltage calibration (according to IEC 60052) or as a load capacitor and to provide a chopped lightning impulse. Chopping gaps are an important part of a complete impulse test system when a chopped impulse is required. Haefely offers two lines of chopping gaps, the MAFS series which is an automated multiple chopping gap and the KFS series which is a horizontal and vertical sphere gap. Integrated with Haefely control units GC 223 and GC 257 the sphere distances can be automatically adjusted on the vertical versions. This saves time in setup and also helps to provide a reproducible chopping time.
Control systems for impulse generators are a crucial part of a complete impulse test system. From customized test procedures to measuring values and built in alarms the Haefely impulse control units GC 223 and GC 257 can provide a reliable and advanced solution.Designed to be used in high voltage environments the Haefely controls units can be connected with an impulse measuring device (HIAS, DIAS or DMI) to form a full impulse control and measurement system. The controllers can also be fully remote controlled via an RS 232 interface and they also support automated test sequences if this option is required.
When combined with our advanced impulse test systems, they are used to test HV apparatus such as Power Transformers, Instrument Transformers, Switchgear, Breaker, HV Cable etc. Tests are conducted with lightning full or chopped waves, and / or switching impulses. Haefely impulse generators integrate the highest safety systems which ensure a safe operation for personnel and test object.
The Digital Measuring Instrument DMI 551 is an instrument for measurement of AC, DC and impulse peak voltages by means of 3 independent channels. The instrument can also be used for firing a generator or a chopping sphere gap and to trigger an oscilloscope or any other measuring device. The instrument has also implemented a flash detector to store and display the last voltage measurement and its polarity before a breakdown or flashover occurred.Typical main applications of the unit include measurements of a voltage divider output or for automated product testing where the DMI 551 is integrated into a complete control and measuring platform. A SCS calibration certificate for AC and/or DC channels is optional available.
The HiAS™ 744 is the unique tailor made impulse analyzer for the industry. Haefely, 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™ 744. Haefely 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.
The Haefely RIC 422 calibrator is used for the supervision and calibration of all kinds of impulse measuring systems.The accuracy of each calibrator can be traced back to the standard from PTB (Physikalisch-Technische Bundesanstalt, Braunschweig, Germany). The calibrator generates Lightning (LI), Switching (SI) and front-chopped Lightning (LIC) reference impulses according to the standards IEC 61083 and IEEE 1122. In addition it can produce accurate DC voltages and unit steps.Combined with the Haefely HiAS™ 744, HiAS™ 743 or DiAS™ 733 software, the RIC 422 can execute a fully automated calibration procedure according IEC 61083 for these impulse analyzing systems
The ratio meter type 430 is used for the measurement and check of the transformation ratio of voltage dividers and terminal networks.The instrument measures the real transformation ratio taking into consideration the influence of the surroundings and including the effect of the measuring cable (which is important especially in the case of damped capacitive voltage dividers).The connection to the high voltage electrode of the voltage divider and the instrument can be done with a wire of 1 mm diameter. For the low voltage arm the impulse voltage measuring cable shall be preferably used.The transformation ratio meter has been developed especially for checking-up the transformation ratio of high voltage dividers in the test field.
Recurrent Surge Generator 482 is a bench-top, one stage, low voltage equivalent of a high voltage impulse generator. Its wide range of applications includes the testing of models, the study of voltage distribution in high voltage windings during impulse voltage stresses and the predetermination of the circuit parameters of impulse test plants.Tests can be performed quickly and reliably without endangering personnel. All impulse circuit elements and, therefore, all impulse forms may be varied within broad limits with selector knobs.
The unit step generator emits recurrent rectangular pulses with rise times of less than 5 ns using a D.C. source 60..300 V. Its main application is the determination of the transfer characteristics of voltage dividers and shunts according to IEC 60060-3.It can also be used for the measurements of transient over-voltages in networks during switching operations or short-circuits and to determine the voltage distribution across capacitors, resistors, etc. or measurement of their self-inductance.
The KAL 9510 has been designed to fulfill the standard requirements of a PD calibrator. Its wide range (from 1 pace to 50 no), its small injection capacitor, carefully selected features and intuitive user interface makes the KAL 9510 unique.
Partial Discharge calibrator KAL 9511 is a successor to the popular Tettex 9216. KAL 9511 covers a wide range of applications.
It is compact, easy to use and has the same long battery operation capability of Tettex 9216 but offers higher performance by using more than 10x smaller injection Capacitance resulting in a higher SNR (Signal to Noise Ratio).
Its unique high-end design ensures flat response of the calibration pulse in the frequency domain far beyond the IEC-recommended measuring band.
The PD calibrator is easily controlled by two large buttons. Charge values are displayed on a large display together with battery status and light synchronization indication.
The KAL 9520 has been designed to exceed the normal requirements of a PD calibrator. Its wide range (from 100fC to 50nC), its small injection capacitor and its advance features (double pulse, polarity pulse selection, internal and external synchronization, linear range selection, etc) make the KAL 9520 unique.
The RIV calibrator KAL 9530 has been designed to perform an RIV calibration together with our DDX 9121b PD detector. The unit introduces the calibration signal at the desired frequency to the test object through a dedicated RIV calibration set (cables, probe and clamp).This special connection set eliminates the voltage drop in the measurement cables at RIV measuring frequencies (850 to 1150 kHz) and therefore guarantees a correct calibration signal.
Reference dividers are used for comparative measurements for the calibration of measuring systems. Reference dividers type RCZ are designed for the calibration of voltage dividers for AC, DC, full and tail chopped impulse voltages. Of course they can be used for normal measurements also.Reference dividers type R are designed for the calibration of voltage dividers for full and front-chopped lightning impulse voltages. Also R dividers can be used for normal measurements.Reference dividers by Haefely meet all requirements of IEC 60060-2 in particular those with respect to measuring accuracy and step response.
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