GE D90 Plus Instruction Manual page 435

CHAPTER 7: PROTECTION
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
PHASE TOC1 OP B ......................................Asserted when phase B of the phase time overcurrent 1
PHASE TOC1 OP C......................................Asserted when phase C of the phase time overcurrent 1
PHASE TOC1 PKP........................................Asserted when at least one phase of the phase time
PHASE TOC1 PKP A....................................Asserted when phase A of the phase time overcurrent 1
PHASE TOC1 PKP B....................................Asserted when phase B of the phase time overcurrent 1
PHASE TOC1 PKP C....................................Asserted when phase C of the phase time overcurrent 1
PHASE TOC2 to 6........................................Same set of operands as shown above for the phase time
Phase undervoltage operands
PHASE UV1 DPO .........................................Asserted when at least one phase of the phase undervoltage 1
PHASE UV1 DPO A .....................................Asserted when phase A of the phase undervoltage 1 element
PHASE UV1 DPO B .....................................Asserted when phase B of the phase undervoltage 1 element
PHASE UV1 DPO C .....................................Asserted when phase C of the phase undervoltage 1 element
PHASE UV1 OP.............................................Asserted when at least one phase of the phase undervoltage 1
PHASE UV1 OP A.........................................Asserted when phase A of the phase undervoltage 1 element
PHASE UV1 OP B.........................................Asserted when phase B of the phase undervoltage 1 element
PHASE UV1 OP C.........................................Asserted when phase C of the phase undervoltage 1 element
PHASE UV1 PKP...........................................Asserted when at least one phase of the phase undervoltage 1
PHASE UV1 PKP A.......................................Asserted when phase A of the phase undervoltage 1 element
PHASE UV1 PKP B.......................................Asserted when phase B of the phase undervoltage 1 element
PHASE UV1 PKP C ......................................Asserted when phase C of the phase undervoltage 1 element
PHASE UV2....................................................Same set of operands as shown above for the phase
Permissive overreach transfer trip (POTT scheme) operands
POTT OP..........................................................Asserted when the permissive over-reaching transfer trip
POTT TRIP 3P................................................Asserted when the permissive over-reaching transfer trip
POTT TRIP A...................................................Asserted when the permissive over-reaching transfer trip
POTT TRIP B...................................................Asserted when the permissive over-reaching transfer trip
element operates.
element operates.
overcurrent 1 element picks up.
element picks up.
element picks up.
element picks up.
overcurrent elements 2 through 6.
element drops out.
drops out.
drops out.
drops out.
element operates.
operates.
operates.
operates.
element picks up.
picks up.
picks up.
picks up.
undervoltage 2 element.
scheme operates.
scheme operates to trip all three phases.
scheme operates to trip phase A.
scheme operates to trip phase B.
PROTECTION FLEXLOGIC
425