Clear Relay Records - GE D60 Instruction Manual

5 SETTINGS
The power cut-off is therefore:
power cut-off = (
CURRENT CUT-OFF LEVEL
 0.02 pu  1.0 V  100 A  13811.2 V) / 66.4 V
= ( 3
= 720.5 watts
Any calculated power value below this cut-off will not be displayed. As well, the three-phase energy data will not accumu-
late if the total power from all three phases does not exceed the power cut-off.
Lower the VOLTAGE CUT-OFF LEVEL and CURRENT CUT-OFF LEVEL with care as the relay accepts lower sig-
nals as valid measurements. Unless dictated otherwise by a specific application, the default settings of "0.02 pu" for
CURRENT CUT-OFF LEVEL and "1.0 V" for VOLTAGE CUT-OFF LEVEL are recommended.
NOTE

PATH: SETTINGS PRODUCT SETUP
 CLEAR RELAY
 RECORDS
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Selected records can be cleared from user-programmable conditions with FlexLogic operands. Assigning user-programma-
ble pushbuttons to clear specific records are typical applications for these commands. Since the D60 responds to rising
edges of the configured FlexLogic operands, they must be asserted for at least 50 ms to take effect.
Clearing records with user-programmable operands is not protected by the command password. However, user-program-
mable pushbuttons are protected by the command password. Thus, if they are used to clear records, the user-programma-
ble pushbuttons can provide extra security if required.
For example, to assign user-programmable pushbutton 1 to clear demand records, the following settings should be applied.
1. Assign the clear demand function to pushbutton 1 by making the following change in the


CLEAR RELAY RECORDS

"
CLEAR DEMAND: PUSHBUTTON 1 ON
2. Set the properties for user-programmable pushbutton 1 by making the following changes in the

SETUP USER-PROGRAMMABLE PUSHBUTTONS
PUSHBUTTON 1 FUNCTION:
PUSHBTN 1 DROP-OUT TIME:
GE Multilin

VOLTAGE CUT-OFF LEVEL

CLEAR RELAY RECORDS
CLEAR FAULT REPORTS:
Off
CLEAR EVENT RECORDS:
Off
CLEAR OSCILLOGRAPHY?
No
CLEAR DATA LOGGER:
Off
CLEAR ARC AMPS 1:
Off
CLEAR ARC AMPS 2:
Off
CLEAR ENERGY:
Off
RESET UNAUTH ACCESS:
Off
CLEAR DIR I/O STATS:
Off
menu:
"

USER PUSHBUTTON 1
"Self-reset"
"0.20 s"
D60 Line Distance Protection System
5.2 PRODUCT SETUP
 CT primary  VT primary)/VT secondary
5.2.3 CLEAR RELAY RECORDS
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand.
Valid only for units with Direct I/O module.
SETTINGS
SETTINGS
menu:
5

PRODUCT SETUP

PRODUCT
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