ABB REG670 - Monitored Data

Name Values (Range) Unit Step Default Description
BCrv2 0.50 - 100.00 - 0.01 1.00 Parameter B for customer programmable
curve for step 2
CCrv2 0.0 - 1.0 - 0.1 0.0 Parameter C for customer programmable
curve for step 2
DCrv2 0.000 - 60.000 - 0.001 0.000 Parameter D for customer programmable
curve for step 2
PCrv2 0.000 - 3.000 - 0.001 1.000 Parameter P for customer programmable
curve for step 2
CrvSat2 0 - 100 % 1 0 Tuning param for prog. under voltage
IDMT curve, step 2
Table 267: UV2PTUV Non group settings (basic)
Name Values (Range) Unit Step Default Description
ConnType PhN DFT
PhPh RMS
PhN RMS
PhPh DFT
-
- PhN DFT Group selector for connection type
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
9.1.6 Monitored data
Table 268: UV2PTUV Monitored data
Name
Type Values (Range) Unit Description
UL1 REAL - kV Voltage in phase L1
UL2 REAL - kV Voltage in phase L2
UL3 REAL - kV Voltage in phase L3
9.1.7 Operation principle
Two-step undervoltage protection (UV2PTUV) is used to detect low power system
voltage. UV2PTUV has two voltage measuring steps with separate time delays. If one,
two or three phase voltages decrease below the set value, a corresponding START
signal is generated. UV2PTUV can be set to START/TRIP based on 1 out of 3, 2 out
of 3 or 3 out of 3 of the measured voltages, being below the set point. If the voltage
remains below the set value for a time period corresponding to the chosen time delay,
the corresponding trip signal is issued. To avoid an unwanted trip due to disconnection
of the related high voltage equipment, a voltage controlled blocking of the function is
available, that is, if the voltage is lower than the set blocking level the function is
blocked and no START or TRIP signal is generated.The time delay characteristic is
individually chosen for each step and can be either definite time delay or inverse time
delay.
1MRK502052-UEN B Section 9
Voltage protection
481
Technical manual