Monitored Data; Technical Data; Negative-Sequence Overvoltage Protection 47; Identification - ABB RELION 620 Series Technical Manual

Section 4
Protection functions
4.2.3.8
4.2.3.9
4.2.4
4.2.4.1
286

Monitored data

Table 235: 59G/N Monitored data
Name Type
PICKUP_DUR FLOAT32
59G/N Enum

Technical data

Table 236: 59N Technical data
Characteristic
Operation accuracy
1)2)
Pickup time
V
value
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Suppression of harmonics
1) Ground voltage before fault = 0.0 × V
random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact

Negative-sequence overvoltage protection 47

Identification

Function description
Negative-sequence overvoltage
protection
Values (Range)
0.00...100.00
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Value
Depending on the frequency of the measured
voltage: f
±1.5% of the set value or ±0.002 × V
Minimum
Pickup
= 1.1 × set 55 ms
Fault
<40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
, f = 60 Hz, ground voltage with nominal frequency injected from
n n
IEC 61850
identification
NSPTOV
1MAC504801-IB E
Unit Description
% Ratio of pickup time / trip time
Status
±2 Hz
n
Typical
57 ms
, where n = 2, 3, 4, 5,...
n
IEC 60617 ANSI/IEEE C37.2
identification device number
U2> 47
Technical Manual
n
Maximum
60 ms
620 series ANSI