Technical Data - ABB RELION REX640 Technical Manual

Section 4
Protection functions
4.12.3.10
4.12.4
4.12.4.1
4.12.4.2
4.12.4.3
1044

Technical data

Table 983: HCUBPTOC Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in IDMT mode
Suppression of harmonics
1) Fundamental frequency current = 1.0 × I
value , results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Shunt capacitor bank switching resonance protection,
current based SRCPTOC
Identification
Function description
Shunt capacitor bank switching
resonance protection, current based
Function block
GUID-507336EE-F0F5-4D27-9827-54D3EB1BFDD4 V1 EN
Figure 562: Function block symbol
Functionality
The shunt capacitor bank switching resonance protection, current based, function
SRCPTOC is used for detecting three-phase resonance caused by capacitor switching
or topology changes in the network. The operating characteristic is a definite time
(DT).
Value
Depending on the frequency of the measured
current: f ±2 Hz
n
1.5% of the set value or 0.002 × I
Typically 26 ms
Typically 40 ms
Typically 0.96
1% of the theoretical value or ±20 ms
5% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
, current before fault = 0.0 × I
n
IEC 61850 IEC 60617
identification identification
SRCPTOC TD>
1MRS759142 C
n
, where n = 2,3,4,5,..
n
Start
, fault current = 2.0 ×
n
ANSI/IEEE C37.2
device number
55ITHD
REX640
Technical Manual