Supervising Elements - GE N60 Instruction Manual

5.6 GROUPED ELEMENTS
a) OPEN POLE DETECTOR
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PATH: SETTINGS GROUPED ELEMENTS
 OPEN POLE DETECTOR

5
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
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.
5-178

SETTING GROUP 1(6)
OPEN POLE FUNCTION:
Disabled
OPEN POLE BLOCK:
MESSAGE
Off
OPEN POLE CURRENT
MESSAGE
SOURCE: SRC 1
OPEN POLE CURRENT
MESSAGE
PKP: 0.20 pu
OPEN POLE BROKEN
MESSAGE
CONDUCTOR: Disabled
OPEN POLE VOLTAGE
MESSAGE
INPUT: Disabled
OPEN POLE VOLTAGE
MESSAGE
SOURCE: SRC 1
OPEN POLE A AUX CO:
MESSAGE
Off
OPEN POLE B AUX CO:
MESSAGE
Off
OPEN POLE C AUX CO:
MESSAGE
Off
OPEN POLE PICKUP
MESSAGE
DELAY: 0.060 s
OPEN POLE RESET
MESSAGE
DELAY: 0.100 s
OPEN POLE TARGET:
MESSAGE
Self-reset
OPEN POLE EVENTS:
MESSAGE
Disabled
flag is set, any other subsequent fault should cause a three-phase trip regard-
OPEN POLE
N60 Network Stability and Synchrophasor Measurement System

5.6.6 SUPERVISING ELEMENTS

 
SUPERVISING ELEMENTS
Range: Disabled, Enabled
Range: FlexLogic operand
Range: SRC 1, SRC 2
Range: 0.05 to 20.00 pu in steps of 0.01
Range: Disabled, Enabled
Range: Disabled, Enabled
Range: SRC 1, SRC 2
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5 SETTINGS
OPEN POLE DETECTOR
GE Multilin