ABB RET670 Applications Manual

tBlkUVn: Time delay to block the undervoltage step n when the voltage level is below
IntBlkStValn, given in s. It is important that this delay is shorter than the operate time
delay of the undervoltage protection step.
3.8.1.3 Setting parameters
Table 123: UV2PTUV (27) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Disable/Enable Operation
VBase 0.05 - 2000.00 kV 0.05 400.00 Base voltage
OperationStep1 Disabled
Enabled
- - Enabled Enable execution of step 1
Characterist1 Definite time
Inverse curve A
Inverse curve B
Prog. inv. curve
- - Definite time Selection of time delay curve type for step 1
OpMode1 1 out of 3
2 out of 3
3 out of 3
- - 1 out of 3 Number of phases required for op (1 of 3, 2 of
3, 3 of 3) from step 1
Pickup1 1 - 100 %VB 1 70 Voltage pickup value (Definite-Time & Inverse-
Time curve) in % of VBase, step 1
t1 0.00 - 6000.00 s 0.01 5.00 Definitive time delay of step 1
t1Min 0.000 - 60.000 s 0.001 5.000 Minimum operate time for inverse curves for
step 1
TD1 0.05 - 1.10 - 0.01 0.05 Time multiplier for the inverse time delay for
step 1
IntBlkSel1 Disabled
Block of trip
Block all
- - Disabled Internal (low level) blocking mode, step 1
IntBlkStVal1 1 - 100 %VB 1 20 Voltage setting for internal blocking in % of
VBase, step 1
tBlkUV1 0.000 - 60.000 s 0.001 0.000 Time delay of internal (low level) blocking for
step 1
HystAbs1 0.0 - 100.0 %VB 0.1 0.5 Absolute hysteresis in % of VBase, step 1
OperationStep2 Disabled
Enabled
- - Enabled Enable execution of step 2
Characterist2 Definite time
Inverse curve A
Inverse curve B
Prog. inv. curve
- - Definite time Selection of time delay curve type for step 2
OpMode2 1 out of 3
2 out of 3
3 out of 3
- - 1 out of 3 Number of phases required for op (1 of 3, 2 of
3, 3 of 3) from step 2
Pickup2 1 - 100 %VB 1 50 Voltage pickup value (Definite-Time & Inverse-
Time curve) in % of VBase, step 2
Table continues on next page
1MRK504116-UUS C Section 3
IED application
513
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