ABB RET670 Commissioning Manual

VA
VB
VC
VN
VA
VA
VB
VC
I
E
D
T
E
S
T
S
E
T
I
E
D
ANSI07000106-1-en.vsd
VB
VC
VN
1
2
ANSI07000106 V2 EN
Figure 48: Connection of the test set to the IED for test of V1 block level
where:
1 is three-phase voltage group1 (V1)
2 is three-phase voltage group2 (V2)
3. Decrease slowly the voltage in phase VA of the test set until the PICKUP signal
resets.
4. Check V1 blocking level by comparing the voltage level at reset with the set
undervoltage blocking V1Low.
5. Repeat steps
2 to 4 to check V1Low for the other phases.
The connections to V1 must be shifted to test another phase. (VA to
VB, VB to VC, VC to VA)
Check of V2Low
Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 49.
Section 11 1MRK 504 165-UUS -
Testing functionality by secondary injection
218 Transformer protection RET670 2.2 ANSI
Commissioning 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