Unbalance Protection; Negative-Sequence Overcurrent Protection Nsptoc - ABB RELION REC615 Technical Manual

1MRS758755 C
Name
MFADPSDE
4.2.7.9 Technical data
Table 411: MFADPSDE Technical data
Characteristic
Operation accuracy
1
Start time
Reset time
Operate time accuracy
4.3

Unbalance protection

4.3.1

Negative-sequence overcurrent protection NSPTOC

4.3.1.1 Identification
Function description
Negative-sequence overcurrent pro-
tection
1
Includes the delay of the signal output contact, results based on statistical distribution of 1000
measurements
REC615 & RER615
Technical Manual
Type Values (Range)
Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured voltage:
f ±2 Hz
n
±1.5% of the set value or ±0.002 × U
Typically 35 ms
Typically 40 ms
±1.0% of the set value or ±20 ms
IEC 61850
identification
NSPTOC
Protection functions
Unit Description
operating quan-
tity
Status
n
IEC 60617 ANSI/IEEE C37.2
identification device number
I2> 46
409