At the very beginning of their lifecycle, during the manufacturing process, current transformers undergo several testing stages. Current transformer manufacturers have to assure the performance data of the products they deliver: The accuracy of amplitude and phase angle, the performance rating…
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At the very beginning of their lifecycle, during the manufacturing process, current transformers undergo several testing stages. Current transformer manufacturers have to assure the performance data of the products they deliver: The accuracy of amplitude and phase angle, the performance rating described by the accuracy limiting factor or the terminal voltage for protection type current transformers, and the instrument security factor for metering current transformers. For TPX, TPY and TPZ CTs, several additional parameters describe their transient behavior.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

Important parameters of a protection current transformer are its ratio, its excitation curve, the knee point, its winding resistance, and the burden. CT Analyzer determines all relevant current transformer data during a test duration of approximately one minute: it measures the burden of the…
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Important parameters of a protection current transformer are its ratio, its excitation curve, the knee point, its winding resistance, and the burden. CT Analyzer determines all relevant current transformer data during a test duration of approximately one minute: it measures the burden of the secondary circuit, the winding resistance and the excitation curve, calculates the accuracy limiting factor for rated and actual burden, determines its ratio, amplitude and phase angle accuracy, and verifies the polarity.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

The goal of each protection system is safe and selective tripping. Relays are connected to the current transformer’s secondary side and can only make correct trip or no-trip decisions if their input current is correct. Ensuring this is the task of protection current transformers, which must be able…
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The goal of each protection system is safe and selective tripping. Relays are connected to the current transformer’s secondary side and can only make correct trip or no-trip decisions if their input current is correct. Ensuring this is the task of protection current transformers, which must be able to transform currents flowing in generators, transformers, or bus bars. To ensure reliable protection, current transformers must be tested at several stages during their life cycle.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

During the lifetime of a current transformer, many faults have to be cleared. Each of these faults may add remanence flux in the core - in a positive or negative direction. During a fault, the accumulated remanence will allow a much lower fault current to saturate the current transformer. This…
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During the lifetime of a current transformer, many faults have to be cleared. Each of these faults may add remanence flux in the core - in a positive or negative direction. During a fault, the accumulated remanence will allow a much lower fault current to saturate the current transformer. This current transformer saturation might subsequently cause a maloperation of the protection system. With its RemAlyzer function, CT Analyzer can determine the extent of magnetic remanence present in a current transformer core.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

The current transformer core has a major influence on the current transformer's behavior. Measuring the characteristics of the magnetic core at the beginning of the manufacturing process helps to ensures that the current transformer will - when its winding is added - fulfill the required…
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The current transformer core has a major influence on the current transformer's behavior. Measuring the characteristics of the magnetic core at the beginning of the manufacturing process helps to ensures that the current transformer will - when its winding is added - fulfill the required specifications. The CT Analyzer uses a special accessory cable to measure the core's characteristics, such as its excitation curve and knee point value, it then recalculates the results for the final number of turns that will be wound.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

CT Analyzer can also test current transformers in power transformers or gas-insulated switchgear. The CT Analyzer is ideal for this application, as it injects test voltage into the secondary current transformer connection.

Interested in current transformer testing? – Watch all of our current…
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CT Analyzer can also test current transformers in power transformers or gas-insulated switchgear. The CT Analyzer is ideal for this application, as it injects test voltage into the secondary current transformer connection.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

Modern designs of protection current transformers according to IEC 60044-6 define the transient performance during an electrical fault, or an auto-reclosure cycle - such as remanence flux and its permissible limits, the time constant with which this flux will decay, and many other parameters. These…
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Modern designs of protection current transformers according to IEC 60044-6 define the transient performance during an electrical fault, or an auto-reclosure cycle - such as remanence flux and its permissible limits, the time constant with which this flux will decay, and many other parameters. These IEC definitions are integrated into CT Analyzer, enabling the parameters for TPX, TPY and TPZ classes to be directly verified.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

Metering current transformers have to accurately transfer system currents to electricity meters. Considering it is in operation 7 days a week, incorrect billing due to an inaccuracy of just one current transformer circuit in a single feeder may lead to significant financial consequences. Therefore,…
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Metering current transformers have to accurately transfer system currents to electricity meters. Considering it is in operation 7 days a week, incorrect billing due to an inaccuracy of just one current transformer circuit in a single feeder may lead to significant financial consequences. Therefore, international standards define the accuracy requirements for metering current transformers.

CT Analyzer comprehensively measures all the essential parameters of metering current transformers within a minute. Its low weight of only 8 kilograms or 17 pounds makes using it on-site just as easy and convenient as in laboratories and test fields.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

In some applications, current transformers with secondary taps are commonly used. Each tap represents a different number of turns of the winding and therefore a different current transformer ratio. The CT Analyzer Switchbox, a special accessory for CT Analyzer, can be connected to the taps of a…
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In some applications, current transformers with secondary taps are commonly used. Each tap represents a different number of turns of the winding and therefore a different current transformer ratio. The CT Analyzer Switchbox, a special accessory for CT Analyzer, can be connected to the taps of a multi-ratio current transformer. All tap combinations can then be tested in one test run, automatically and efficiently.

Interested in current transformer testing? – Watch all of our current transformer videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More Information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/

Traditional current transformer testing follows a black-box approach. The current transformer is solely assessed through its external behavior without considering what is happening inside. Three such black-box testing methods exist, differing in their comprehensiveness and the effort they involve:…
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Traditional current transformer testing follows a black-box approach. The current transformer is solely assessed through its external behavior without considering what is happening inside. Three such black-box testing methods exist, differing in their comprehensiveness and the effort they involve: primary-current injection using a portable high-current source; secondary-voltage injection using a portable variac; primary-nominal current injection using a high-current source, a reference current transformer, a burden simulator and a bridge. CT Analyzer opens the black box through secondary injection with variable frequency and a patented low-voltage, low-frequency method for excitation measurement.

Interested in current transformer testing? – Watch all of our videos: youtube.com/playlist?list=PLzmbZeI1bhu-7ubPhQI6RvaqxSVzLoGS-

More information about CT Analyzer: www.omicronenergy.com/en/products/ct-analyzer/