Performing Zct Error Correction Option - Mitsubishi Electric melpto d series Operation Manual

Numerical protection relay
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D - 7

Performing ZCT error correction option

To set ZCT error correction function effect (on) or null (oF).
Before put this function effect, implement the item D - 6 in advance first, please.
<< Example >>
Step
Description
1
Implement the item D - 6 at first.
Start the setting mode.
The SETTING/CANCEL indicator LED comes
on and the item number blinks.
2
Mode selection (Setting
Operation
Option)
See the section D - 1 for how to select
mode.
3
Select the item number "904" (ZCT error
correction option).
At this time, the current option status will be
displayed in the item data box.
Effect = "on"
Null = "oF" (set at time of shipment)
4
Make sure that the item number "904" is shown
in the box, and press the SELECT/SET
switch. The item data box will start blinking,
instead of the item No. box, so that data can be
changed.
5
Change the item data from "oF" (null) to "on"
(effect).
6
Make sure that the desired data is shown in the
item data box, and press the SELECT/SET
switch to program the data.
With the "on" data, the SET.END/TRIP indicator
LED will blink.
At the same time, the item No. box will start
blinking instead of the item data box.
Notice that at this status the "on" data is not put
into effect.
7
To execute ZCT error correction, press the
-
SET.END/TRIP switch, the error
correction will become effective. The data
programmed will be implemented and
complete the procedure.
To cancel the data programmed without
-
implementing, press the
SETTING/CANCEL switch. The data
programmed will be all cleared to terminate
To change ZCT error correction function from null to effect.
Forced
To put in effect:
SET.END/TRIP
To cancel:
Operation
Switch
Press
SETTING/
Once
CANCEL
(Omitted)
UP
SELECT/SET
Once
UP
Once
SELECT/SET
Once
Once
SETTING/
CANCEL
35
Indication
Item No.
Item data
5
1
1
S E T T IN G /
U P
C A N C E L
D O W N
S E L E C T /
S E T
IN D I.E N D
S E T .E N D /
T R IP
Item No.
Item data
8
0
0
0
1
Item No.
Item data
9
0
4
o
F
Item No.
Item data
9
0
4
o
F
Item No.
Item data
9
0
4
o
n
Item No.
Item data
9
0
4
o
n
S E T T IN G /
U P
C A N C E L
D O W N
S E L E C T /
S E T
IN D I.E N D
S E T .E N D /
T R IP
Item No.
Item data
2.
0
IN D ./
R E S E T
0
0
IN D ./
R E S E T
JEP0-IL9416

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