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ABB Distribution Protection Unit 1500R
Table 6-2: Logical Output Definitions (cont).
50P-3:
Phase Instantaneous Overcurrent Trip Alarm Level 3 (High Set Instantaneous). Indicates
(3I>>3)
that the phase instantaneous overcurrent element level 3, 50P-3, has energized. 50P-3
will be a logical 1 when this occurs.
50P-3*:
Phase Instantaneous Overcurrent Trip Seal-in Alarm Level 3 (High Set Instantaneous).
(3I>>3*)
See "Logical Output Types" earlier in this section.
50N-3:
Ground Instantaneous Overcurrent Trip Alarm Level 3 (High Set Instantaneous). Indicates
(IN>>3)
that the phase instantaneous overcurrent element level 3, 50N-3, has timed out and
energized. 50N-3 will be a logical 1 when this occurs.
50N-3*:
Neutral Instantaneous Overcurrent Trip Seal-in Alarm Level 3 (High Set Instantaneous). See
(IN>>3*)
"Logical Output Types" earlier in this section.
PATA:
Phase A (L1) Target Alarm. Activates any time the red front panel phase A target LED is
(L1TA)
illuminated. When PATA is a logical 1, the phase A target LED is lit. If the front panel target
LED's are reset either by the front panel pusbutton "Target Reset" or by WinECP PATA will
become a logical 0. This output is useful in remote communications and SCADA
applications where faulted phase information is required.
PBTA:
Phase B (L2) Target Alarm. Activates any time the red front panel phase B target LED is
(L2TA)
illuminated. When PBTA is a logical 1, the phase B target LED is lit. If the front panel target
LED's are reset either by the front panel pusbutton "Target Reset" or by WinECP PBTA will
become a logical 0. This output is useful in remote communications and SCADA
applications where faulted phase information is required.
PCTA:
Phase C (L3) Target Alarm. Activates any time the red front panel phase C target LED is
(L3TA)
illuminated. When PCTA is a logical 1, the phase C target LED is lit. If the front panel target
LED's are reset either by the front panel pusbutton "Target Reset" or by WinECP PCTA will
become a logical 0. This output is useful in remote communications and SCADA
applications where faulted phase information is required.
27-1P:
Single Phase Undervoltage Alarm. Activates when any phase (or phase pair for delta
(U<)
VT's) of voltage drops below the 27 undervoltage setting.
27-1P*:
Single Phase Undervoltage Seal-in Alarm. See "Logical Output Types" earlier in this
(U<*)
section.
79DA:
Recloser Disabled Alarm. This logical output operates in conjunction with the red front
(O->IDA)
panel "Recloser Out" target. It becomes a logical 1 when the recloser is disabled either by
the 43A logical input or when the 79-1 recloser sequence is set to lockout.
79CA1:
Recloser Counter 1 Alarm. Operates when the recloser has operated beyond the number
(O->I-1)
of counts set in the 79 counter 1 alarm settings.
79CA1*:
Recloser Counter 1 Seal-in Alarm. See "Logical Output Types" earlier in this section.
(O->I-1*)
79CA2:
Recloser Counter 2 Alarm. Operates when the recloser has operated beyond the number
(O->I-2)
of counts set in the 79 counter 2 alarm settings.
79CA2*:
Recloser Counter 2 Seal-in Alarm. See "Logical Output Types" earlier in this section.
(O->I-2*)
Note:
Two recloser counter alarms are provided, 79CA1 and 79CA2. They can be set to
different thresholds or as typically applied, one can be reset to 0 on a monthly basis and
the other on a yearly basis. This way recloser operations can be tracked on a monthly
and yearly basis.
OCTC:
Overcurrent Trip Counter Alarm. Activates when the number of overcurrent trip
operations has exceeded the Overcurrent Counter Alarm setting.
6-8
website:www.abb.com/papd
Programmable Input and Output Contacts
9/99
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