Phase-Phase And Phase-Neutral Voltage Measurements Vmmxu, Vnmmxu; Voltage And Current Sequence Measurements Vmsqi, Cmsqi; Technical Data - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
Phase currents (amplitude and angle) are available on the outputs and each amplitude output has a
corresponding supervision level output (ILx_RANG). The supervision output signal is an integer in
the interval 0-4, see
12.1.8.4

Phase-phase and phase-neutral voltage measurements VMMXU, VNMMXU

The voltage function must be connected to three-phase voltage input in the configuration tool to be
operable. Voltages are handled in the same way as currents when it comes to class 0.5 calibrations,
see above.
The voltages (phase or phase-phase voltage, amplitude and angle) are available on the outputs and
each amplitude output has a corresponding supervision level output (ULxy_RANG). The supervision
output signal is an integer in the interval 0-4, see
12.1.8.5

Voltage and current sequence measurements VMSQI, CMSQI

The measurement functions must be connected to three-phase current (CMSQI) or voltage (VMSQI)
input in the configuration tool to be operable. No outputs, other than X_RANG, are calculated within
the measuring blocks and it is not possible to calibrate the signals. Input signals are obtained from
the pre-processing block and transferred to corresponding output.
Positive, negative and three times zero sequence quantities are available on the outputs (voltage and
current, amplitude and angle). Each amplitude output has a corresponding supervision level output
(X_RANGE). The output signal is an integer in the interval 0-4, see
12.1.9

Technical data

Table 192: CVMMXN, CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU
Function
Voltage
Connected current
Active power, P
Reactive power, Q
Apparent power, S
Apparent power, S Three phase
settings
Power factor, cos (φ)
Technical Manual
Section 12.1.8.1.
Range or value
(0.1-1.5) ×U
r
(0.2-4.0) × I
r
0.1 x U < U < 1.5 x U
r
0.2 x I < I < 4.0 x I
r
0.1 x U < U < 1.5 x U
r
0.2 x I < I < 4.0 x I
r
0.1 x U < U < 1.5 x U
r
0.2 x I < I < 4.0 x I
r
cos phi = 1
0.1 x U < U < 1.5 x U
r
0.2 x I < I < 4.0 x I
r
© 2021 Hitachi Energy. All rights reserved.
Section 12.1.8.1.
Section
Accuracy
± 0.5% of U
± 0.5% of U at U > U
± 0.5% of I
r
± 0.5% of I at I > I
± 1.0% of S
r
± 1.0% of S at S > S
r
± 1.0% of S
r
± 1.0% of S at S > S
r
± 1.0% of S
r
± 1.0% of S at S > S
r
± 0.5% of S at S > S
± 0.5% of S
< 0.02
r
r
Section 12
Monitoring
D0E6252T201305151403 v2
D0E6266T201305151403 v2
12.1.8.1.
D0E6038T201305151403 v1
at U£U
r r
r
at I £ I
r
r
at S ≤ S
r r
r
at S ≤ S
r r
r
at S ≤ S
r r
r
r
at S ≤ S
r r
177