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Countries > Canada > National > Gazette > 2009 > Part II > [CANADA Gazette Part ii, 2009-0318] Part II‚ March 18‚ 2009‚ Vol. 143‚ No. 6
Current Transformer, manufactured by Tettex Instruments having serial number 149691 7.
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New Products
Model 2821/22 from Tettex Instru- ments , Inc., is a completely inte- grated measuring system for dielec- tric measurements on solid or liquid insulation material samples.
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CR4 - Thread: The Right Voltage for Tan Delta Test
… tan-delta test sets (I know of) are built by Doble which is a relative reading, you can compare the reading to other units of the same construction tested by other Doble test sets and the Tettex Instruments (marketed in the US …
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Development of an on-site calibration method for a current transformer testing system and its application
Measuring bridge for testing of current transformer (www.zera.de) [4] Tettex Instruments .
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http://eprints.iisc.ernet.in/4706/1/wavelet.pdf
Osvath, W. Zaengl and H. I. Weber, “Measurement of Par- tial Discharge: Problems and Haw Thcy Can be Solved With Flexible Measuring Systems: Tettex Instruments Bulletin SEVPSE 76 (1985) 19, ISSN 036-1321.
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Use of a lock-in amplifier for calibrating an instrument current transformer
Documentation Tettex Instruments .
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Degradation of polymeric power cable due to water treeing under AC and DC stress
The measurements of capacitance, dissipation factor (tan δ), and power factor were all performed at frequency 50 Hz using a Tettex Instruments – Schering Bridge Model 2816 with automatic guard potential regulator.
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KRISS-NRC Intercomparisons of Calibration Systems for Instrument Transformers With Many Different Ratios at Power Frequency
REFERENCES [1] Tettex Instruments , Automatic instrument transformer test set.
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Time domain measurements of dielectric response in oil-paper insulation systems
We wish to acknowledge the financial support from "Projekt- und Studienfonds der Elektrizitatswirtschaft" (PSEL) and the technical support from Weidmann AG, Rapperswil, performing the ageing procedures and the former Tettex Instruments AG, Zurich, providing the RVM.
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Comparison of off-line and on-line partial discharge for large motors
The AC current and dissipation factor were measured with capacitance bridge ( Tettex Instruments Type 2818), control unit and AC 12kV high voltage supply (Type 5283).
