Interlocking - ABB REL650 Applications Manual

Section 11
Control
11.5
11.5.1
11.5.2
346

Interlocking

Identification
Function description
Logical node for interlocking
Interlocking for busbar grounding switch
Interlocking for bus-section breaker
Interlocking for bus-section
disconnector
Interlocking for bus-coupler bay
Interlocking for 1 1/2 breaker diameter
Interlocking for 1 1/2 breaker diameter
Interlocking for 1 1/2 breaker diameter
Interlocking for double CB bay
Interlocking for double CB bay
Interlocking for double CB bay
Interlocking for line bay
Interlocking for transformer bay
Application
The main purpose of switchgear interlocking is:
• To avoid the dangerous or damaging operation of switchgear
• To enforce restrictions on the operation of the substation for other reasons for
example, load configuration. Examples of the latter are to limit the number of parallel
transformers to a maximum of two or to ensure that energizing is always from one
side, for example, the high voltage side of a transformer.
This section only deals with the first point, and only with restrictions caused by switching
devices other than the one to be controlled. This means that switch interlock, because of
device alarms, is not included in this section.
Disconnectors and grounding switches have a limited switching capacity. Disconnectors
may therefore only operate:
IEC 61850 IEC 60617
identification identification
SCILO -
BB_ES -
A1A2_BS -
A1A2_DC -
ABC_BC -
BH_CONN -
BH_LINE_A -
BH_LINE_B -
DB_BUS_A -
DB_BUS_B -
DB_LINE -
ABC_LINE -
AB_TRAFO -
1MRK 506 334-UUS A
ANSI/IEEE C37.2
device number
3
3
3
3
3
3
3
3
3
3
3
3
3
Application manual