GE L60 Instructions Manual page 540

CONTROL ELEMENTS
BREAKER RESTRIKE 1 HF DETECT
High-frequency pattern is typical for capacitor bank, cables, and long transmission lines applications.
BRK RSTR 1 BRK OPEN
the breaker is open. It is important to assign either 52 contact with this setting or breaker close command with
setting to give clear indication to the relay about breaker status.
CLS CMD
BRK RSTR 1 OPEN CMD
breaker is opened, either manually or from protection logic.
BRK RSTR 1 CLS CMD
breaker is closed.
5
5.7.9.5 CT failure detector
SETTINGS  CONTROL ELEMENTS  MONITORING ELEMENTS  CT FAILURE DETECTOR 1(4)
 CT FAILURE
 DETECTOR 1
5-332
— Enables/disables high-frequency (HF) pattern detection when breaker restrike occurs.
— Assigns a FlexLogic operand indicating the open position of the breaker. It must be logic "1" when
— Assigns a FlexLogic operand indicating a breaker open command. It must be logic "1" when the
— Assigns a FlexLogic operand indicating a breaker close command. It must be logic "1" when the
Figure 5-190: Breaker restrike logic
CT FAIL 1 FUNCTION:

Disabled
CT FAIL 1 BLOCK:

Off
CT FAIL 1 3I0 INP 1:

SRC 1
CT FAIL 1 3I0 INP 1

PKP: 0.2 pu
CT FAIL 1 3I0 INP 2:

SRC 2
CT FAIL 1 3I0 INP 2

PKP: 0.2 pu
CT FAIL 1 3V0 INPUT:

SRC 1
CT FAIL 1 3V0 INPUT

PKP: 0.20 pu
CT FAIL 1 PICKUP

DELAY: 1.000 s
Range: Disabled, Enabled
Range: FlexLogic operand
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.1 to 2.0 pu in steps of 0.1
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.1 to 2.0 pu in steps of 0.1
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.04 to 2.00 pu in steps of 0.01
Range: 0.000 to 65.535 s in steps of 0.001
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
BRK RSTR 1