Digital Elements - GE L60 Instruction Manual

Line phase comparison system, ur series
Hide thumbs Also See for L60:
Table of Contents

Advertisement

5.6 CONTROL ELEMENTS

PATH: SETTINGS
CONTROL ELEMENTS
 DIGITAL ELEMENT 1
5
Digital elements run once per power system cycle.
As such they can easily fail to react to an input signal or a block signal with a duration less than one power system
NOTE
cycle. This also means that digital element output can react up to one power system cycle later than the pickup and
reset delay settings indicate.
Do not use digital elements with transient signals, such as communications commands. Do not use digital elements
where random delays of up to one cycle cannot be tolerated, such as in high speed protection.
There are 48 identical digital elements available, numbered 1 to 48. A digital element can monitor any FlexLogic™ operand
and present a target message and/or enable events recording depending on the output operand state. The digital element
settings include a name which will be referenced in any target message, a blocking input from any selected FlexLogic™
operand, and a timer for pickup and reset delays for the output operand.
DIGITAL ELEMENT 1 INPUT: Selects a FlexLogic™ operand to be monitored by the digital element.
DIGITAL ELEMENT 1 PICKUP DELAY: Sets the required time delay from element pickup to element operation. If a
pickup delay is not required, set to "0". To avoid nuisance alarms, set the delay greater than the operating time of the
breaker.
DIGITAL ELEMENT 1 RESET DELAY: Sets the time delay to reset. If a reset delay is not required, set to "0".
DIGITAL ELEMENT 1 PICKUP LED: This setting enables or disabled the digital element pickup LED. When set to
"Disabled", the operation of the pickup LED is blocked.
5-230


DIGITAL ELEMENTS

DIGITAL ELEMENT
FUNCTION: Disabled
DIG ELEM
MESSAGE
Dig Element 1
DIG ELEM
MESSAGE
Off
DIG ELEM
MESSAGE
DELAY:
DIG ELEM
MESSAGE
DELAY:
DIG ELEMENT
MESSAGE
PICKUP LED: Enabled
DIG ELEM
MESSAGE
Off
DIGITAL ELEMENT
MESSAGE
TARGET: Self-reset
DIGITAL ELEMENT
MESSAGE
EVENTS: Disabled
L60 Line Phase Comparison System
DIGITAL ELEMENT 1(48)
Range: Disabled, Enabled
1
Range: 16 alphanumeric characters
1 NAME:
Range: FlexLogic™ operand
1 INPUT:
Range: 0.000 to 999999.999 s in steps of 0.001
1 PICKUP
0.000 s
Range: 0.000 to 999999.999 s in steps of 0.001
1 RESET
0.000 s
Range: Disabled, Enabled
1
Range: FlexLogic™ operand
1 BLOCK:
Range: Self-reset, Latched, Disabled
1
Range: Disabled, Enabled
1
5 SETTINGS
5.6.7 DIGITAL ELEMENTS
GE Multilin

Advertisement

Table of Contents
loading

Table of Contents