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Chapter 4: "SETPOINTS" Menu
GROUND INST. O/C
PICKUP 120% CT
If
"GROUND INST O/C RELAY"
≠
– – – –
GROUND INST. O/C
DELAY: 0 ms
If
"GROUND INST O/C RELAY"
≠
– – – –
GROUND O/C ALARM
RELAY: – – – –
GROUND O/C ALARM
PICKUP: 12% CT
If
"GROUND O/C ALARM RELAY"
≠
– – – –
GROUND O/C ALARM
DELAY: 1.0 Sec
If
"GROUND O/C ALARM RELAY"
≠
– – – –
END OF PAGE
4.5
Setpoint page 5: OUTPUT RELAYS
SETPOINT PAGE 5
OUTPUT RELAYS
TRIP OUTPUT
RELAY: LATCHED
TRIP RELAY PULSE
TIME: 0.2 Sec
If
"TRIP OUTPUT RELAY"
=
PULSED
CURRENT PROTECTION RELAY - IPR-D
RANGE:
.................................................................................................4
STEPS:
.................................................................................................
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.
RANGE:
.................................................................................................
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.
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
RANGE:
...................................................................................................
STEPS:
...................................................................................................................
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.
RANGE:
.....................................................................................................
STEPS:
...............................................................................................
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.
Last LINE of PAGE 4.
Press LINE or ▲PAGE, to pass to the first line of PAGE 5.
This PAGE allows setting the features of the relay output contacts.
RANGE:
.........................................................................................
• 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.
RANGE:
.........................................................................................................
STEPS:
......................................................................................................................
Enter the delay for the trip relay de-energizing.
4.5
% ÷ 1800% CT
1% CT / 10% CT
0 ms ÷ 2000 ms
4% ÷ 300% CT
1% CT
0.05 s ÷ 600 s
0.01 s / 0.1 s / 1 s
LATCHED; PULSED
0.1 s÷ 2.0 s
0.1 s
Manual P/N: IPR-D GBM 01/09/2006
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