ABB RET670 Applications Manual

tAlarm: The time delay for alarm is set by this parameter. Normally, few seconds delay
can be used on capacitor banks alarm. For fuse failure supervision (SDDRFUF) the
alarm delay can be set to zero.
3.8.5.3 Setting parameters
Table 135: VDCPTOV (60) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Enable/Disable
VBase 0.50 - 2000.00 kV 0.01 400.00 Base Voltage
BlkDiffAtVLow No
Yes
- - Yes Block operation at low voltage
VDTrip 0.0 - 100.0 %VB 0.1 5.0 Operate level, in % of VBase
tTrip 0.000 - 60.000 s 0.001 1.000 Time delay for voltage differential operate, in
milliseconds
tReset 0.000 - 60.000 s 0.001 0.000 Time delay for voltage differential reset, in
seconds
V1Low 0.0 - 100.0 %VB 0.1 70.0 Input 1 undervoltage level, in % of VBase
V2Low 0.0 - 100.0 %VB 0.1 70.0 Input 2 undervoltage level, in % of VBase
tBlock 0.000 - 60.000 s 0.001 0.000 Reset time for undervoltage block
VDAlarm 0.0 - 100.0 %VB 0.1 2.0 Alarm level, in % of VBase
tAlarm 0.000 - 60.000 s 0.001 2.000 Time delay for voltage differential alarm, in
seconds
Table 136: VDCPTOV (60) Group settings (advanced)
Name
Values (Range) Unit Step Default Description
RF_A 0.000 - 3.000 - 0.001 1.000 Ratio compensation factor phase L1
U2L1*RFL1=U1L1
RF_B 0.000 - 3.000 - 0.001 1.000 Ratio compensation factor phase L2
U2L2*RFL2=U1L2
RF_C 0.000 - 3.000 - 0.001 1.000 Ratio compensation factor phase L3
U2L3*RFL3=U1L3
3.8.6 Loss of voltage check LOVPTUV (27)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Loss of voltage check LOVPTUV - 27
Section 3 1MRK504116-UUS C
IED application
540
Application manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24