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Chapter 4: "SETPOINTS" Menu
CURRENT PROTECTION RELAY - IPR-D
Manual P/N: IPR-D GBM 01/09/2006
4.5
GROUND INST. O/C
PICKUP 120% CT
If
"GROUND INST O/C RELAY"
≠
– – – –
RANGE:
.................................................................................................4
% ÷ 1800% CT
STEPS:
.................................................................................................
1% CT / 10% CT
Enter the instantaneous overcurrent pickup level. This level determines the current level
at which the relay will start counting the time for the activation of the related output.
GROUND INST. O/C
DELAY: 0 ms
If
"GROUND INST O/C RELAY"
≠
– – – –
RANGE:
.................................................................................................
0 ms ÷ 2000 ms
STEPS: ......................................................................................................10 ms
Enter the intervention delay for ground instantaneous overcurrent protection.
If:
the ground current increases above the value entered in “GROUND INST. O/C PICKUP”
for a time > delay time selected,
⇒
the output will activate.
GROUND O/C ALARM
RELAY: – – – –
Select the outputs to be activated by the ground overcurrent alarm. Select
"– – – –"
for
disabling the alarm.
REMARK:
The procedure for selection is described at page 4.2
GROUND O/C ALARM
PICKUP: 12% CT
If
"GROUND O/C ALARM RELAY"
≠
– – – –
RANGE:
...................................................................................................
4% ÷ 300% CT
STEPS:
...................................................................................................................
1% CT
Enter the ground overcurrent alarm level. This level determines the current level at which
the relay will start counting the time for the activation of the alarm.
GROUND O/C ALARM
DELAY: 1.0 Sec
If
"GROUND O/C ALARM RELAY"
≠
– – – –
RANGE:
.....................................................................................................
0.05 s
÷
600 s
STEPS:
...............................................................................................
0.01 s / 0.1 s / 1 s
Enter the delay for the ground overcurrent alarm activation.
If:
the ground current increases above the value entered in “GROUND O/C ALARM
DELAY” for a time > delay time selected,
⇒
the output will activate.
END OF PAGE
Last LINE of PAGE 4.
Press
LINE
or
▲
PAGE,
to pass to the first line of PAGE 5.
4.5 Setpoint page 5: OUTPUT RELAYS
SETPOINT PAGE 5
OUTPUT RELAYS
This PAGE allows setting the features of the relay output contacts.
TRIP OUTPUT
RELAY: LATCHED
RANGE:
.........................................................................................
LATCHED; PULSED
•
PULSED
operation:
In case of fault condition due to which the related output must activate, this output will
be energized for a time as the one set in
TRIP RELAY PULSE TIME
; after this time
the output relay will de-energize and the contact will return to the stand-by condition.
The output will repeat this operation every 3 seconds in case the fault condition is still
present.
•
LATCHED
operation:
In case of fault condition due to which the related output must activate, this output will
be energized for an indefinite time. The output relay will de-energize only when the
fault condition is no more present and the unit is RESET.
TRIP RELAY PULSE
TIME: 0.2 Sec
If
"TRIP OUTPUT RELAY"
=
PULSED
RANGE:
.........................................................................................................
0.1 s÷ 2.0 s
STEPS:
......................................................................................................................
0.1 s
Enter the delay for the trip relay de-energizing.
Summary of Contents for IPR-D
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