GE 845 Instruction Manual page 360

MONITORING
4–256
INITIAL XFMR LOL
Range: 1 to 500000 hours in steps of 1 hr
Default: 0 hours
Enter a setting for the consumed transformer life in hours. When the LOL element is
enabled, the loss of life computed by the relay is added to the initial loss of life in hours.
PICKUP
Range: 0 to 500000 hours in steps of 1 hr
Default: 200000 hours
Enter the expected life, in hours, required for operation of the element. This setting must
be above the total transformer life set as a reference based on nominal loading
conditions, and 30º C ambient temperature, as outlined in the IEEE standards.
BLOCK
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
The Neutral IOC is blocked when the selected operand is asserted.
OUTPUT RELAY 1(X)
Range: Do Not Operate, Operate
Default: Do Not Operate
The menu includes a list of available output relays to be set for operation or no operation
upon protection operation.
EVENTS
Range: Enabled, Disabled
Default: Enabled
The selection of the
Enabled
TARGETS
Range: Disabled, Self-reset, Latched
Default: Self-reset
The selection of the Self-reset
function.
setting enables the Events function.
or Latched settings enables the target messages of the
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS