ABB RET670 Installation And Commissioning Manual

UL1
UL2
UL3
UN
UL1
UL1
UL2
UL3
I
E
D
T
E
S
T
S
E
T
I
E
D
IEC07000106-1-en.vsd
UL2
UL3
UN
1
2
IEC07000106 V2 EN
Figure 63: Connection of the test set to the IED for test of U1 block level
where:
1 is three-phase voltage group1 (U1)
2 is three-phase voltage group2 (U2)
3. Decrease slowly the voltage in phase UL1 of the test set until the START
signal resets.
4.
Check U1 blocking level by comparing the voltage level at reset with the set
undervoltage blocking U1Low.
5. Repeat steps
2 to 4 to check U1Low for the other phases.
The connections to U1 must be shifted to test another phase.
(UL1 to UL2, UL2 to UL3, UL3 to UL1)
Check of
U2Low
Procedure
1. Connect voltages to the IED according to valid connection diagram and
figure 64.
Section 13 1MRK 504 088-UEN C
Verifying settings by secondary injection
160
Installation and 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