GE C60 Instruction Manual page 437

CHAPTER 5: SETTINGS CONTROL ELEMENTS
opens and current disappears. If the fault evolves into a multi-phase fault before the circuit breaker pole opens for the first
fault, the phase selector changes the fault type from a single-line-to-ground fault to a multi-phase fault, thereby initiating
a three-pole trip.
— Selects the signals used to detect an open pole condition. When "I AND V AND CBaux" value is
OPEN POLE DETECTION
selected, the breaker 52 contacts and the current with optional voltage signals are used to determine open pole
conditions. For the "I AND V only" selection, only the current with optional voltage signals are used.
For convenience, the position of the breaker poles defined in the breaker control feature and available as FlexLogic
operand through and are used by the open pole feature if the "I AND V
BREAKER 1 Φ A CLSD BREAKER 1 Φ C CLSD BREAKER 1 OOS
AND CBaux" detection value is selected.
For correct operation of the open pole detector, the breaker control, trip output, and single-pole autoreclose features must
be enabled and configured properly. When used in configuration with only one breaker, set the to
BREAKER 2 FUNCTION
"Enabled" and the setting to "On" (see the Breaker Control section earlier in this chapter for details).
BREAKER 2 OUT OF SV
Figure 5-146: Open pole detector logic (Sheet 1 of 2)
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C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL 5-269