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M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CONTROL ELEMENTS
CHAPTER 5: SETTINGS
5
BREAKER RESTRIKE 1 HF DETECT
— Enables/disables high-frequency (HF) pattern detection when breaker restrike occurs.
High-frequency pattern is typical for capacitor bank, cables, and long transmission lines applications.
BRK RSTR 1 BRK OPEN
— Assigns a FlexLogic operand indicating the open position of the breaker. It must be logic “1” when
the breaker is open. It is important to assign either 52 contact with this setting or breaker close command with
BRK RSTR 1
CLS CMD
setting to give clear indication to the relay about breaker status.
BRK RSTR 1 OPEN CMD
— Assigns a FlexLogic operand indicating a breaker open command. It must be logic “1” when the
breaker is opened, either manually or from protection logic.
BRK RSTR 1 CLS CMD
— Assigns a FlexLogic operand indicating a breaker close command. It must be logic “1” when the
breaker is closed.
Figure 5-177: Breaker restrike logic
5.8.11.5 CT failure detector
SETTINGS
CONTROL ELEMENTS
MONITORING ELEMENTS
CT FAILURE DETECTOR 1(4)
CT FAILURE
DETECTOR 1
CT FAIL 1 FUNCTION:
Disabled
Range: Disabled, Enabled
CT FAIL 1 BLOCK:
Off
Range: FlexLogic operand
CT FAIL 1 3I0 INP 1:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
CT FAIL 1 3I0 INP 1
PKP: 0.2 pu
Range: 0.1 to 2.0 pu in steps of 0.1
CT FAIL 1 3I0 INP 2:
SRC 2
Range: SRC 1, SRC 2, SRC 3, SRC 4
CT FAIL 1 3I0 INP 2
PKP: 0.2 pu
Range: 0.1 to 2.0 pu in steps of 0.1
CT FAIL 1 3V0 INPUT:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
CT FAIL 1 3V0 INPUT
PKP: 0.20 pu
Range: 0.04 to 2.00 pu in steps of 0.01
CT FAIL 1 PICKUP
DELAY: 1.000 s
Range: 0.000 to 65.535 s in steps of 0.001
Summary of Contents for M60
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