ABB ret650, Technical Manual

Page: 444 / 670

compensation at 5, 30 and 100% of rated current. The compensation below 5% and
above 100% is constant and linear in between, see figure
195 .
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 section
"Measurement supervision" .
14.1.8.4 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
section
"Measurement supervision" .
14.1.8.5 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 section
"Measurement supervision" .
14.1.9 Technical data
Table 357: CVMMXN, CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU
Function Range or value Accuracy
Voltage (0.1-1.5) ×U
r
± 0.5% of U
r
at U £ U
r
±
0.5% of U at U > U
r
Connected current (0.2-4.0) × I
r
± 0.5% of I
r
at I £ I
r
±
0.5% of I at I > I
r
Active power, P 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
± 1.0% of S
r
at S ≤ S
r
± 1.0% of S at S > S
r
Reactive power, Q 0.1 x U
r
< U < 1.5 x U
r
0.2 x I
r
< I < 4.0 x I
r
± 1.0% of S
r
at S ≤ S
r
± 1.0% of S at S > S
r
Table continues on next page
Section 14
1MRK 504 135-UEN A
Monitoring
438
Technical manual