GE SR345 Instruction Manual page 225

CHAPTER 6: SETPOINTS
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
LE1(16) ASSERTED
Range: On, Off
Default: Off
This setting defines the Logic Element state "On" or "Off" to be used as an output. The
asserted "On" selection provides an output "high" when the LE is "On". If asserted "Off" is
selected, then the LE output will be "high", when the LE is "Off".
TRIGGER SOURCE 1, 2, 3
Range: Off, Any input from the list of inputs
Default: Off
Each of the three trigger sources is configurable by allowing the assigning of an input
selected from a list of inputs. This input can be a contact input, a virtual input, a remote
input, or an output flag from a protection, or control element.
TRIGGER LOGIC
Range: OR, AND
Default: OR
This setting defines trigger source operation as either "OR" or "AND". When set to "OR"
any of the inputs will trigger the Logic Element. When set to "AND" all three sources must
be asserted before the Logic Element is triggered.
PKP DELAY
Range: 0 to 60000 ms in steps of 1 ms
Default: 0 ms
This setting specifies the pickup time delay before Logic Element operation.
RESET DELAY
Range: 0 to 60000 ms in steps of 1 ms
Default: 0 ms
This setting specifies the time delay from a reset timer that starts upon expiry of the
pickup time delay and prolongs the operation of the Logic Element until this time expires.
BLOCK 1, 2, 3
Range: Off, Any input from the list of inputs
Default: Off
Each of the three blocks is configurable by allowing the assigning of an input selected
from a list of inputs. This input can be a contact input, a virtual input, a remote input, or
an output flag from a protection, or control element, as well as an input from any of the
other seven logic inputs.
BLOCK LOGIC
Range: OR, AND
Default: OR
This setting defines block source operation as either "OR" or "AND". When set to "OR" any
of the inputs will block the Logic Element. When set to "AND" all three sources must be
asserted before the Logic Element is blocked.
OUTPUT RELAYS 3 to 6
Range: Do not operate, Operate
Default: Do not operate
Any, or all of the output relays 3 to 6 can be selected to operate upon Logic Element
operation. The selection of auxiliary relay outputs is available no matter whether
Control, Alarm, Latched Alarm, or Trip function is selected.
S4 CONTROLS
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