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Calibration services
Calibration of current- and voltage transformers according to ISO/IEC 17025
Since 2010 EPRO Gallspach GmbH is accredited as a calibration laboratory for current and voltage transformers (accuracy measurement) according to the ISO/IEC 17025 standard.
An increasing number of European and international customers carry out their recalibrations in our calibration laboratory.
The challenge for our customers often lies in the need to send their urgently required measuring equipment off-site for calibration, which, in turn, affects their production. EPRO understands this challenge and guarantees its customers that calibration will be completed within 5 working days at the latest. In most cases, the equipment is ready for dispatch much sooner. This provides a significant advantage over governmental organizations, saving valuable time.
EPRO Gallspach GmbH’s calibration laboratory is fully certified according to ISO/IEC 17025 and traceable to the Austrian standard of the Federal Office of Metrology and Surveying (BEV) in Austria and the Physikalisch-Technische Bundesanstalt (PTB) in Germany. Through the Mutual Recognition Agreement (MRA) for calibration certificates (ILAC), the calibration certificates are internationally recognized and valid.
Since June 2020, EPRO Gallspach GmbH has been officially authorized to display the ILAC MRA logo.
In addition to the Accreditation Austria logo, the ILAC MRA logo is now also displayed on the calibration certificates issued by the laboratory.
The ILAC MRA logo identifies internationally recognized calibration laboratories.
ILAC is an international association of accreditation bodies operating in the field of ISO/IEC 17011 and involved in the accreditation of conformity assessment bodies, including calibration laboratories (ISO/IEC 17025), testing laboratories (ISO/IEC 17025), medical laboratories (ISO 15189), and inspection bodies (ISO/IEC 17020).
Scope of accreditation of the calibration laboratory
Accuracy measurement
Voltage Transformers
Measurement range:
Measurement deviation: 0 % to ≤ 2 %
Angle Error: 0′ to ≤ 60′
Measurement conditions and process:
Primary: 50 V to 500,000/√3 V
Secondary: 100 V to 110 V, 100/√3V to 220/√3 V
Frequency: 50 Hz and 60 Hz
Measurement uncertainty relative to the measured value:
Up to 40 kV: Error [%] = ± 0.006
Angle Error [‘] = ± 0.4
From 40 kV to 500/√3 kV: Error [%] = ± 0.011
Angle Error [‘] = ± 0.5
Current transformers
Measurement range:
Measurement Deviation: 0 % to ≤ 2 %
Angle Error: 0′ to ≤ 60′
Measurement conditions and process:
Primary: 1 A to 3000 A
Secondary: 1 A to 5 A
Extended current measurement range:
External 120 % to external 200 %
With primary windings up to 20,000 A
Frequency: 50 Hz and 60 Hz
Measurement uncertainty relative to the measured value:
Error [%] = ± 0.006
Angle Error [‘] = ± 0.4
