Measurements Cvmmxn; Identification; Function Block - ABB REG650 Technical Manual

Generator protection

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Table of Contents

The power system quantities provided, depends on the actual

hardware, (TRM) and the logic configuration made in PCM600.

The measuring functions CMSQI and VMSQI provide sequential quantities:

I: sequence currents (positive, zero, negative sequence, amplitude and angle)

U: sequence voltages (positive, zero and negative sequence, amplitude and

The CVMMXN function calculates three-phase power quantities by using

fundamental frequency phasors (DFT values) of the measured current respectively

voltage signals. The measured power quantities are available either, as

instantaneously calculated quantities or, averaged values over a period of time (low

pass filtered) depending on the selected settings.

Measurements CVMMXN

Function description

Measurements

The available function blocks of an IED are depending on the actual hardware

(TRM) and the logic configuration made in PCM600.

IEC08000222.vsd

IEC08000222 V1 EN

CVMMXN function block

identification

P, Q, S, I, U, f

SYMBOL-RR V1 EN

1MRK 502 034-UEN -

ANSI/IEEE C37.2

device number

Technical Manual