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Section 8
1MAC050144-MB C
Measurement functions
548
615 series ANSI
Technical Manual
8.2.0.6
Technical data
Table 452: IA, IB, IC Technical data
8.3
Sequence current measurement, I1, I2, I0
8.3.1
Identification
8.3.2
Function block
Figure 297:
Function block
8.3.3
Signals
Table 453: I1, I2, I0 Input signals
Characteristic
Value
Pickup accuracy
Depending on the frequency of the current
measured: f
n
±2Hz
±0.5% or ±0.002 x I
n
(at currents in the range of 0.01...4.00 x I
n
)
Suppression of harmonics
DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Phase sequence current
CSMSQI
I1, I2, I0
I1, I2, I0
Name
Type
Default
Description
I
0
SIGNAL
0
Zero sequence current
I
1
SIGNAL
0
Positive sequence current
I
2
SIGNAL
0
Negative sequence current
Содержание 615 Series ANSI
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