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