GE C60, Instruction Manual

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5-200 C60 Breaker Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
5.6.8 SUPERVISING ELEMENTS
a) OPEN POLE DETECTOR
PATH: SETTINGS

GROUPED ELEMENTS

SETTING GROUP 1(6)

SUPERVISING ELEMENTS

OPEN POLE DETECTOR
The open pole detector is designed to detect if any pole of the associated circuit breaker is opened or the conductor is bro-
ken on the protected power line and cable. The output FlexLogic operands can be used in three-pole and single-pole trip-
ping schemes, in reclosing schemes, in blocking some elements (like CT failure), and in signaling or indication schemes. In
single-pole tripping schemes, if
OPEN POLE
flag is set, any other subsequent fault should cause a three-phase trip regard-
less of fault type.
The open pole detector logic is built on detecting absence of current in one phase during presence of current in other
phases. Phases A, B and C breaker auxiliary contacts (if available) are used in addition to make a logic decision for single-
pole tripping applications. If voltage input is available, a low voltage function is used to detect absence of the monitoring
voltage in the associated pole of the breaker.
• OPEN POLE FUNCTION : This setting is used to enable/disable operation of the element.
• OPEN POLE BLOCK : This setting is used to select a FlexLogic operand that blocks operation of the element.
• OPEN POLE CURRENT SOURCE : This setting is used to select the source for the current for the element.
• OPEN POLE CURRENT PICKUP : This setting is used to select the pickup value of the phase current. The pickup set-
ting is the minimum of the range and likely to be somewhat above of the charging current of the line.

OPEN POLE DETECTOR

OPEN POLE FUNCTION:
Disabled
Range: Disabled, Enabled
MESSAGE
OPEN POLE BLOCK:
Off
Range: FlexLogic operand
MESSAGE
OPEN POLE CURRENT
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
OPEN POLE CURRENT
PKP: 0.20 pu
Range: 0.05 to 20.00 pu in steps of 0.01
MESSAGE
OPEN POLE BROKEN
CONDUCTOR: Disabled
Range: Disabled, Enabled
MESSAGE
OPEN POLE VOLTAGE
INPUT: Disabled
Range: Disabled, Enabled
MESSAGE
OPEN POLE VOLTAGE
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
OPEN POLE
φ
A AUX CO:
Off
Range: FlexLogic operand
MESSAGE
OPEN POLE
φ
B AUX CO:
Off
Range: FlexLogic operand
MESSAGE
OPEN POLE
φ
C AUX CO:
Off
Range: FlexLogic operand
MESSAGE
OPEN POLE PICKUP
DELAY: 0.060 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
OPEN POLE RESET
DELAY: 0.100 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
OPEN POLE TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
OPEN POLE EVENTS:
Disabled
Range: Disabled, Enabled