Three-Phase Thermal Protection For Feeders, Cables And Distribution Transformers T1Pttr - ABB RELION 620 Series Technical Manual

Protection functions
Name
EFF_ST_VAL_C
PHPVOC
4.1.5.9 Technical data
Table 322: PHPVOC Technical data
Characteristic
Operation accuracy
2
Start time ,
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
4.1.6 Three-phase thermal protection for feeders, cables and
distribution transformers T1PTTR
4.1.6.1 Identification
Function description
Three-phase thermal protection for
feeders, cables and distribution
transformers
1
Measurement mode = default, current before fault = 0.0 × I
phase with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2
Includes the delay of the signal output contact
336
Type Values (Range)
FLOAT32 0.00...50.00
Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured current and
voltage:
f ±2 Hz
n
Current:
±1.5% of the set value or ± 0.002 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Typically 26 ms
Typically 40 ms
Typically 0.96
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
-50 dB at f = n × f
IEC 61850
identification
T1PTTR
Unit
xIn
n
n
, where n = 2, 3, 4, 5,...
n
IEC 60617
identification
3Ith>F
, f = 50 Hz, fault current in one
n n
Technical Manual
1MRS757644 H
Description
Effective start
value for phase C
Status
ANSI/IEEE C37.2
device number
49F
620 series