Testing Laboratories for Instrument Transformers and High Voltage Tests
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On top PFIFFNER has the knowledge and ability to perform in-house all type and special test on instrument transformers (except short-time current test) according the relevant international standards up to Um = 550 kV.
PFIFFNER Switzerland
PFIFFNER Switzerland has in Hirschthal six independent test fields which are accredited for all AC tests on instrument transformers according ISO/IEC 17025:2017 by the Swiss Accreditation Service (SAS) .
The accreditation covers all relevant international standards for instrument transformers. Detailed information you can find in the scope of accreditation STS 0210.
In general, before leaving the factory, every instrument transformer is subjected to routine tests. In the medium and high-voltage area, freedom from partial discharge under high voltage loading is measured, among other things. In this case, our internal test procedures are more stringent in part than those required by standards. Detailed measurements are made on every instrument transformer. The results are documented and their conformity to standards is reviewed.
Capability of Test Fields
- AC power frequency voltage withstand test incl. partial discharge measurement up to 750 kVAC
- DC voltage withstand test incl. partial discharge measurement up to 800 kVDC
- Lightning impulse test up to 1650 kV
- Switching impulse test up to 1200 kV
- Accuracy measurement on voltage transformers and low-power passive voltage transformers up to 500 kVAC
- Accuracy measurement on inductive current transformers up to 50 kAAC
PFIFFNER Laboratories are also accredited for different procedure standards such as:
- IEC 60270 (partial discharge measurement)
- IEC 60060-1 (high voltage test techniques)
- IEC 60137 (insulated bushings for alternating voltages > 1 kV)
Certifications
PFIFFNER Germany
PFIFFNER Germany has in Itzehoe one test field which is accredited for all AC tests on instrument transformers according ISO/IEC 17025:2017 by the Deutsche Akkreditierungsstelle (DAkkS). The accreditation covers all relevant international standards for instrument transformers. Detailed information you can find in the scope of accreditation Dakks.
In general, before leaving the factory, every instrument transformer is subjected to routine tests. In high-voltage area, freedom from partial discharge under high voltage loading is measured, among other things. In this case, our internal test procedures are more stringent in part than those required by standards. Detailed measurements are made on every instrument transformer. The results are documented and their conformity to standards is reviewed.
Capability of Test Fields
- AC Power frequency voltage withstand test incl. partial discharge measurement up to 800 kVAC
- DC voltage withstand test incl. partial discharge measurement up to 400 kVDC
- Lightning impulse test up to 2000 kV
- Switching impulse test up to 1175 kV
- Accuracy measurement on voltage transformers up to 500 kVAC
- Accuracy measurement on inductive current transformers up to 8000 AAC
PFIFFNER Laboratories are also accredited for different procedure standards such as:
- IEC 60270 (partial discharge measurement)
- IEC 60060-1 (high voltage test techniques)
Certifications
PFIFFNER Turkey
PFIFFNER Turkey has in Ankara three independent test fields for routine and type tests of instrument transformers. Our test laboratories are accredited according to TS EN ISO/IEC 17020:2012 by the Turkish Accreditation Agency (TURKAK) . The accreditation covers accuracy tests of current transformers, inductive voltage transformers and capacitive voltage transformers according to international standards. Detailed information you can find in the scope of accreditation AB-0223-M.
As a strikt rule, before leaving the factory, every instrument transformer is subjected to routine tests. In the medium and high-voltage area, freedom from partial discharge under high voltage loading is measured, among other things. In this case, our internal test procedures are more stringent in part than those required by standards. Detailed measurements are made on every instrument transformer. The results are documented and their conformity to standards is reviewed.
Capability of Test Fields
- AC Power frequency voltage withstand test incl. partial discharge measurement up to 750 kVAC
- Lightning impulse test up to 1000 kVDC
- Accuracy measurement on inductive and capacitive voltage transformers up to 500 kVAC
- Accuracy measurement on inductive current transformers up to 10 kAAC
Our Laboratories are operating under different procedure standards such as:
- IEC 60270 (partial discharge measurement)
- IEC 60060-1 (high voltage test techniques)
Certifications
PFIFFNER Brazil
PFIFFNER Brazil has in the city of Itajaí, Santa Catarina State, 2 independent test fields which are regularly calibrated for all tests on instrument transformers according ISO9001:2015 traceble to the Brazilian Calibration Entity (RBC - Rede Brasileira de Calibração). Which covers all relevant international standards for instrument transformers.
Before leaving the factory, 100 % of the instrument transformers are subjected to routine tests. In the medium and high-voltage area, partial-discharge-free under high voltage is measured, among all others rigorous standardized tests. Furthermore, in many cases, our internal tests' requirements and procedures that exceed those required by standards. Detailed measurements are made on every instrument transformer and the results are documented, while the conformity to standards is reviewed/assured.
Capability of Test Fields
- AC Power frequency voltage withstand test incl. partial discharge measurement up to 750 kVAC
- Accuracy measurement on voltage and current transformers
- Accuracy measurement on current transformers up to 7500 A
- Temperature-rise test
- Wet test
- Eletromagnetic Compatibility tests
- Tightness tests
- Measurement of capacitance and dielectric dissipation factor
- Transmitted overvoltage test
- Mechanical tests