ABB RET670 Installation And Commissioning Manual

13.6.4.3 Completing the test
Continue to test another function or end the test by changing the Test mode setting
to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
13.6.5
Sensitive directional residual overcurrent and power
protection SDEPSDE
Prepare the IED for verification of settings as outlined in section
"Overview" and
section "Preparing for test" in this chapter
Figure 59 shows the principal connection of the test set during the test of the
sensitive directional residual overcurrent protection. Observe that the polarizing
voltage is equal to -3U
0
.
IEC09000021-1-en.vsd
IED test set
NI
IED
NI
L1U
L2U
L3U
NU
U1
U2
U3
NU
TRIP
-3U
0
IEC09000021 V1 EN
Figure 59: Principle connection of the test set
Values of the logical signals belonging to the sensitive directional residual
overcurrent protection are available on the local HMI under Main menu/Test/
Function status/Current protection/SensDirResOvCurr(PSDE,67N)/SDEx
13.6.5.1 Measuring the operate and time limit for set values
1MRK 504 088-UEN C Section 13
Verifying settings by secondary injection
139
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