HIGHVOLT Calibration

Accreditation scope

Accreditation scope and best measurement capabilities

The accreditation scope offers a complete listing of accredited measurands and the smallest measurement uncertainties that can be stated. The table below offers an overview of accredited measurands. The smallest measurement uncertainty that can be stated depends on the standards applied, so this listing should be interpreted as an informative list of accredited measurands rather than a definitive one. Further details along with the accredited measurands, the smallest measurement uncertainty that can be stated and the scope of validity can be found in the accreditation scope.

The term high voltage is used in two different ways in our field:

  • High voltage as the measurand. Here, the form and magnitude of the electric voltage are calibrated. The objects under calibration are either the entire measuring system or just the voltage dividers for measurement of the DC voltage, AC voltage and impulse voltage. The AC power also belongs in this category.
  • High voltage as a condition. The condition under which the measurement of the main measurand is to be performed. The objects under calibration are, for example, the measuring systems and the components of the capacitance measurement or impulse current measurement.

 

Summarized accreditation scope of Calibration laboratory D-K-19153-01-00

 

Device

Quantity

Measuring range

Place of calibration

Instruments,
digital analyzers,
impulse calibrators

DC

Ū

1 V … 1000 V

at HIGHVOLT

AC

U, Ueff

1 V … 700 V, 50 Hz

100 V, 10 Hz … 500 Hz

on-site or at HIGHVOLT

LI

Û, T1, T2

9 V … 1000 V,
0.84/60 µs,
1.56/60 µs

LIC

Û, TC

50 V … 750 V,
TC = 0.5 µs … 6 µs

SI

Û, T1, T2, TP, Td

9 V … 850 V,
250/2500 µs,
20/4000 µs

Step

U

9 V … 330 V

Measuring systems,
Measuring dividers

DC

Ū

1 kV … 600 kV,
linearity test up to 2000 kV
(on-site up to 1500 kV)

on-site or at HIGHVOLT

AC

, Ueff

1 kV … 800 kV,
linearity test up to 1800 kV
(on-site up to 1000 kV)

LI

Û, T1, T2

10 kV … 700 kV,
linearity test up to 3500 kV

LIC

Û, TC

180 kV … 600 kV

SI

T2

50 kV … 500 kV,
linearity test up to 2500 kV

Capacitors,
C/tan δ-measuring devices

 

C

10 pF … 10 nF,
5 kV …100 kV/50 Hz

on-site or at HIGHVOLT

tan δ

1 · 10-5 … 1 · 10-2

Shunts

IC

Î ,T1, T2

200 A … 40 kA,
8/20 µs

Current sensors

IC

Î,T1, T2

200 A … 200 kA,
8/20 µs

Loss measuring systems

AC

Ueff

40 V … 100 kV,
50/60 Hz

AC

Ieff

0.4 A … 2000 A,
50/60 Hz

AC

P

16 W … 200 MW

AC

Q

16 var … 200 Mvar

AC

S

16 VA … 200 MVA

 

 





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