Monitored Data - ABB 615 series Technical Manual

Section 4
Protection functions
4.5.7.8
4.5.7.9
4.5.8
4.5.8.1
4.5.8.2
666

Monitored data

Table 570: 27RT Monitored data
Name Type
27RT Enum
Technical data
Table 571: 27RT Technical data
Characteristic
Operation accuracy
1)2)
Pickup time
Reset time
Trip time accuracy
Suppression of harmonics
Num of pickup phases = 1 out of 3, results based on statistical distribution of 1000 measurements
1) Tested for
2) Includes the delay of the signal output contact
Voltage vector shift protection 78V
Identification
Function description
Voltage vector shift protection
Function block
78V
V_A_AB TRIP
V_B_BC INT_BLKD
V_C_CA
BLOCK
GUID-87689571-BB05-4911-B2A9-23CCC8EA665C V1 EN
Figure 333: Function block
Values (Range) Unit
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Value
Depending on the frequency of the measured
voltage:
f ±2 Hz
n
±1.5% of the set value or ±0.002 × V
Typically 40 ms
Based on maximum value of
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
IEC 61850 IEC 60617
identification identification
VVSPPAM VS
1MAC059074-MB A
Description
Status
n
Recovery time setting
, where n = 2, 3, 4, 5,...
n
ANSI/IEEE C37.2
device number
78V
615 series ANSI
Technical Manual