CHAPTER 5: SETTINGS
SYSTEM SETUP
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
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The breaker control element contains the auxiliary logic for status and serves as the interface for opening and closing of a
circuit breaker from protection, autoreclose, SCADA, or through the front panel interface. The breaker control element can
be used to create interlocking functionality. For greater security in determination of the breaker position, both the 52/a and
52/b auxiliary contacts are used with reporting of the discrepancy between them.
To use this element, configure the contact outputs that trip and close the breaker to use FlexLogic operands
BREAKER 1 OFF
CMD
(or
BREAKER 1 TRIP A/B/C
in the case of single-pole tripping) and
BREAKER 1 ON CMD
, and configure the breaker control
element inputs as described here.
A description of the operation of the breaker control and status monitoring features from the front panel is provided in
chapter 4.
There are two breaker control elements for each CT/VT module installed. The following settings are available for each
breaker control element.
BREAKER 1 FUNCTION
— This setting enables and disables the operation of the breaker 1 control feature.
BREAKER1 PUSH BUTTON CONTROL
— Set to “Enable” to allow front panel pushbutton open/close control operations.
BREAKER1 TAGGING
— Set to "Enable" to allow the graphical front panel to tag breaker 1. When tagged, the following
operations are disabled: pushbutton open/close, IEC 61850 open/close, autoreclose command issued by the autoreclose
element, and close command initiated by
BREAKER 1 CLOSE
setting. The trip command issued by the Trip Out element or
BREAKER 1 OPEN
setting is not affected.
BREAKER1 SUBSTITUTN
— Set to "Enable" to allow the graphical front panel to substitute breaker 1 status. When substituted,
breaker 1 control open/close status is forced to the substituted value.
BREAKER1 BYPASS
— Set to "Enable" to allow the graphical front panel to bypass breaker 1 interlocking. When asserted,
BREAKER 1 BLK OPEN
and
BREAKER 1 BLK CLOSE
settings are bypassed.
BREAKER1 AR BLOCK
— Set to "Enable" to allow the graphical front panel to issue a BLOCK AR command and generate the
BREAKER 1 BLK RCLS
operand, which blocks the breaker 1 close command from the Autoreclose element.
The autoreclose element operates for BKR1 and BKR2 only.
Once
AR BLOCK
is asserted from the front panel, the breaker reclosing is not allowed. Note that the autoreclose element is
not automatically inhibited by
BLOCK AR
from the front panel. If the autoreclose scheme needs to be inhibited, set setting
AR BLOCK BKR1
or
AR BLOCK
in the autoreclose element with the
BREAKER 1 BLK RCLS
operand.
BREAKER 1 NAME
— Assign a user-defined name (up to six characters) to the breaker. This name is used in flash messages
related to breaker 1.
BREAKER 1 MODE
— Selects “3-Pole” mode, where all breaker poles are operated simultaneously, or “1-Pole” mode where all
breaker poles are operated either independently or simultaneously.
BREAKER 1 OPEN
— Selects an operand that when activated, and unless blocked, initiates the Breaker 1 open and individual
phase trip commands.
BREAKER 1 OUT OF SV:
Off
Range: FlexLogic operand
BREAKER 1 RACKED-IN:
Off
Range: FlexLogic operand
BREAKER 1 EVENTS:
Disabled
Range: Disabled, Enabled
Breaker control element 1 and Breaker control element 2 are permanently attached to Autoreclose element
functions BKR1 and BKR2 respectively.
Breaker control element 1 is permanently attached to the Trip Output element.