Monitored Data; Operation Principle - ABB REL650 Technical Manual

1MRK 506 382-UEN A
Name Values (Range)
tIReset2
ACrv2
BCrv2
CCrv2
DCrv2
PCrv2
CrvSat2
Table 144: UV2PTUV Non group settings (basic)
Name Values (Range)
ConnType
GlobalBaseSel
8.1.6
8.1.7
Line distance protection REL650 2.2 IEC
Technical manual
Unit
0.000 - 60.000 s
0.005 - 200.000 -
0.50 - 100.00 -
0.0 - 1.0 -
0.000 - 60.000 -
0.000 - 3.000 -
0 - 100 %
Unit
PhN DFT -
PhPh RMS
PhN RMS
PhPh DFT
1 - 12 -

Monitored data

Table 145: UV2PTUV Monitored data
Name
UL1
UL2
UL3

Operation principle

Two-step undervoltage protection (UV2PTUV) is used to detect low power system
voltage. If one, two or three phase voltages decrease below the set value, a
corresponding START signal is generated. The parameters OpMode1 and
OpMode2 influence the requirements to activate the START outputs: the measured
voltages 1 out of 3, 2 out of 3, or 3 out of 3 have to be lower than the corresponding
set point to issue the corresponding START signal.
UV2PTUV has two voltage-measuring steps with separate time delays. If the
voltage remains below the set value for the chosen time delay, the corresponding
trip signal is issued. To avoid an unwanted trip due to the disconnection of the
related high-voltage equipment, a voltage-controlled blocking of the function is
Step Default
0.001 0.025
0.001 1.000
0.01 1.00
0.1 0.0
0.001 0.000
0.001 1.000
1 0
Step Default
- PhN DFT
1 1
Type Values (Range)
REAL -
REAL -
REAL -
Section 8
Voltage protection
Description
Time delay in IDMT reset (s), step 2
Parameter A for customer programmable
curve for step 2
Parameter B for customer programmable
curve for step 2
Parameter C for customer
programmable curve for step 2
Parameter D for customer
programmable curve for step 2
Parameter P for customer programmable
curve for step 2
Tuning param for prog. under voltage
IDMT curve, step 2
Description
Group selector for connection type
Selection of one of the Global Base
Value groups
PID-3586-MONITOREDDATA v6
Unit Description
kV Voltage in phase L1
kV Voltage in phase L2
kV Voltage in phase L3
M15326-3 v9
263