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Kamstrup 382

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Typical accuracy charts<br />

Load curve<br />

Belastningskurve<br />

1,0<br />

Errors i %<br />

Fejl i %<br />

0,5<br />

0,0<br />

-0,5<br />

Cos(phi) cos(ϕ)=1= 1<br />

Cos(phi) cos(ϕ)=0,5 = 0,5 ind.<br />

Cos(phi) cos(ϕ)=0,8 = 0,8 cap. cap.<br />

-1,0<br />

5 20 100 200 840 1680<br />

Belastning Load % i of af Ib I b<br />

Influence Påvirkning from fra spændingsvariation<br />

voltage variation<br />

1,0<br />

Errors i %<br />

Fejl i %<br />

0,5<br />

0,0<br />

-0,5<br />

Cos(ϕ)=1 Cos(phi) = 1<br />

Cos(ϕ)=0,5 Cos(phi) = 0,5 ind. ind.<br />

-1,0<br />

40 80 90 110 115<br />

Voltage Spænding in i % af of UnU n<br />

Influence Påvirkning from fra frequency frekvensvariation variation<br />

1,0<br />

0,5<br />

I=0,1Ib, l b , Cos(phi)=1 Cos(ϕ)=1<br />

Fejl i %<br />

Errors i %<br />

0,0<br />

-0,5<br />

I=0,5Imax, lmax,<br />

Cos(ϕ)=1 Cos(phi)=1<br />

I=0,5Imax, lmax,<br />

Cos(ϕ)=0,5 Cos(phi)=0,5 ind.<br />

-1,0<br />

98 102<br />

Frequency Frekvens in i % % af fnof U n<br />

1,0<br />

Influence Påvirkning from fra temperature temperaturvariationvariation<br />

Errors i %<br />

Fejl i %<br />

0,5<br />

0,0<br />

-0,5<br />

I=0,1Ib, lb, Cos(phi)=1 Cos(ϕ)=1<br />

I=lb, I=Ib, Cos(phi)=1 Cos(ϕ)=1<br />

I=lmax, I=Imax, Cos(phi)=1 Cos(ϕ)=1<br />

-1,0<br />

-40 -25 -10 5 40 55 70<br />

Temperature<br />

Errors i %<br />

Fejl i %<br />

1,0<br />

0,5<br />

0,0<br />

-0,5<br />

MPE<br />

MPE<br />

I=ltr, I=Itr, Cos(ϕ)=1 Cos(phi)=1<br />

I=10 Itr, ltr, Cos(phi)=1 Cos(ϕ)=1<br />

I=lmax, I=Imax, Cos(ϕ)=1 Cos(phi)=1<br />

MPE (Maximum permissible error)<br />

Composite error from:<br />

– load<br />

– Voltage variation<br />

– frequency variation<br />

– temperature variation<br />

-1,0<br />

-40 -25 -10 5 23 40 55 70<br />

Temperature<br />

<strong>Kamstrup</strong> Metering Solutions<br />

6<br />

<strong>Kamstrup</strong> <strong>382</strong><br />

5810751_B1_GB_SA_12.2009

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