Technical Data; Three-Phase Thermal Protection For Feeders, Cables And Distribution Transformers T1Pttr; Identification; Function Block - ABB RELION 620 Series Technical Manual

Section 4
Protection functions
4.1.5.9
4.1.6
4.1.6.1
4.1.6.2
318

Technical data

Table 322: PHPVOC Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode = default, current before fault = 0.0 × I
nominal frequency injected from random phase angle, results based on statistical distribution of 1000
measurements
2) Includes the delay of the signal output contact
Three-phase thermal protection for feeders, cables and
distribution transformers T1PTTR

Identification

Function description
Three-phase thermal protection for
feeders, cables and distribution
transformers

Function block

A070691 V3 EN
Figure 158: Function block
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 , where n = 2, 3, 4, 5,...
n
, f = 50 Hz, fault current in one phase with
n n
IEC 61850 IEC 60617
identification identification
T1PTTR 3Ith>F
1MRS757644 F
n
n
ANSI/IEEE C37.2
device number
49F
620 series
Technical Manual