ABB RET670 Applications Manual

For switches with an individual operation gear per phase, the evaluation must consider
possible phase discrepancies. This is done with the aid of an AND-function for all three
phases in each apparatus for both open and close indications. Phase discrepancies will
result in an unknown double indication state.
3.12.3.1 Configuration guidelines
The following sections describe how the interlocking for a certain switchgear
configuration can be realized in the IED by using standard interlocking modules and
their interconnections. They also describe the configuration settings. The inputs for
delivery specific conditions (Qx_EXy) are set to 1=TRUE if they are not used, except
in the following cases:
• 989_EX2 and 989_EX4 in modules BH_LINE_A and BH_LINE_B
• 152_EX3 in module AB_TRAFO
when they are set to 0=FALSE.
3.12.3.2 Interlocking for line bay ABC_LINE (3)
Application
The interlocking for line bay (ABC_LINE, 3) function is used for a line connected to a
double busbar arrangement with a transfer busbar according to figure
238. The
function can also be used for a double busbar arrangement without transfer busbar or a
single busbar arrangement with/without transfer busbar.
189
289
189G
289G
989
989G
WA1 (A)
WA2 (B)
WA7 (C)
789
en04000478_ansi.vsd
152
ANSI04000478 V1 EN
Figure 238: Switchyard layout ABC_LINE (3)
1MRK504116-UUS C Section 3
IED application
617
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