Best measurement capabilities

The services are available both in-house and on-site in the Client’s laboratory. Slight modifications in achievable uncertainties and magnitudes of voltage and current may be applicable. 

Quantity

Range

Best
uncertainty

Frequency

Current

DC

Magnitude

(0 to 6) kA

0.0025 %

 

AC

Magnitude

(0 to 4) kA

0.02 %

Power frequency

CT ratio error

(-2 to +2) %

0.003 %

Power frequency

CT phase displacement

(-70 to 70) min

0.1 min

Power frequency

Voltage

 

DC

magnitude

(1 to 1000) kV

0.005 %

 

Ratio

1E-6 to 1

0.005 %

 

AC

Magnitude

(0.7 to 300) kV

0.02 %

0.1 – 300 Hz

Linearity extension

up to1100 kV

0.1 %

Power frequency

VT Ratio error

(-2 to +2) %

0.006 %

Power frequency

VT phase displacement

(-70 to 70) min

0.24 min

Power frequency

LI
1.2/50µs

Amplitude

(1 to 800) kV

1 %

 

Front time

(0.84 to 10) µs

3 %

 

Time to half value

(40 to 60) µs

3 %

 

Linearity extension

Up to 2500 kV

IEC 60060-2

 

SI 250/2500µs

Amplitude

(10 to 240) kV

1%

 

Time to peak

(20 to 500) µs

3%

 

Time to half value

(1000 to 8000) µs

3 %

 

Linearity extension

(240 to 1200) kV

IEC 60060-2

 

Apparent charge

q

1 pC to 20 pC

(0.1+0.06q) pC

 

20 pC to 1E+5 pC

(1+0.018q) pC

 

High voltage Capacitance

<750V

(0.01to 9000) nF

0.001 %

Power frequency

<300kV

(0.01to 1000) nF

0.001 %

Power frequency

High voltage dissipation factor D

D at <750V

(0.1 to 900) nF

0.00001 + 0.005*D

Power frequency

D at <300kV

(0.01 to 100) nF

0.00001 + 0.005*D

Power frequency

Dissipation factor at VLF

D at <50kV

(0.02 to 5) µF

0.00004 + 0.01* D

0.1 - 50Hz

High voltage capacitance bridges

Capacitance ratio

0.1 to 1000

0.00001%

Power frequency

Dissipation factor D

-0.1 to +0.1

0.000005 + 0.0005*D

Power frequency

Winding ratio meters

Ratio

0.0001 to 1

0.000 001

 

µΩ -meters

Resistance R

1 µΩ to 1 Ω

0.1 µΩ + 0.0005*R

 

Insulation resistance testers

Resistance

(0.1 to 5000) MΩ

0.5 %

 

Related Information

Contact Persons

Petra Lantz

Phone: +46 10 516 59 69

RISE Research Institutes of Sweden, Phone 010-516 50 00, E-mail info@ri.se

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