ABB Relion 615 series, Technical Manual

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4.6.1.9 Technical data
Table 594: 81 Technical data
Characteristic Value
Operation accuracy f>/f< ±5 mHz
df/dt ±50 mHz/s (in range |df/dt| <5 Hz/s)
±2.0% of the set value (in range 5 Hz/s < |df/dt| < 15
Hz/s)
Pickup time f>/f< <80 ms
df/dt <120 ms
Reset time <150 ms
Trip time accuracy ±1.0% of the set value or ±30 ms
4.6.1.10 Technical revision history
Table 595: 81 Technical revision history
Technical revision Change
B Step value changed from 0.001 to 0.0001 for the
Pickup value Freq> and Pickup value Freq< settings.
C df/dt setting step changed from 0.005 ×Fn /s to
0.0025 ×Fn /s.
D Internal improvement.
4.7 Impedance protection
4.7.1 Out-of-step protection 78
4.7.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Out of step protection OOSRPSB φ> 78
1MAC059074-MB A
Section 4
Protection functions
615 series ANSI 685
Technical Manual