Monitored Data; Technical Data; Positive-Sequence Undervoltage Protection 27Ps; Identification - ABB RELION 620 Series Technical Manual

Section 4
Protection functions
4.2.4.8
4.2.4.9
4.2.5
4.2.5.1
290

Monitored data

Table 241: 47 Monitored data
Name Type
PICKUP_DUR FLOAT32
47 Enum

Technical data

Table 242: 47 Technical data
Characteristic
Operation accuracy
1)2)
Pickup time
V
value
V
value
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Suppression of harmonics
1) Negative-sequence voltage before fault = 0.0 × V
frequency injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact

Positive-sequence undervoltage protection 27PS

Identification

Function description
Positive-sequence undervoltage
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 voltage
measured: f
±1.5% of the set value or ±0.002 × V
Minimum
Pickup
= 1.1 × set 33 ms
Fault
25 ms
Pickup
= 2.0 × set
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, negative-sequence overvoltage with nominal
n n
IEC 61850
identification
PSPTUV
1MAC504801-IB E
Unit Description
% Ratio of pickup time / trip time
Status
±2 Hz
n
Typical
35 ms
27 ms
, where n = 2, 3, 4, 5,...
n
IEC 60617 ANSI/IEEE C37.2
identification device number
U1< 27PS
Technical Manual
n
Maximum
38 ms
30 ms
620 series ANSI