ABB DPU 1500R Instruction Book page 101

Distribution protection unit
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ABB Distribution Protection Unit 1500R
Table 7-2 (cont.)
Ext. Trip & ARC
Ext. Trip CB Stuck
Reclose Initiated
CB Failed to Trip
CB Failed to Close
CB Pops Open
CB Pops Closed
CB State Unknown
Grnd. TC Enabled
(
)
IN
Grnd. TC Disabled
(
)
IN
Phase TC Enabled
(
)
3I
Phase TC Disabled
(
)
3I
Primary Set Active
Alt 1 Set Active
Alt 2 Set Active
7-8
Indicates that the TARC (Trip and Auto Reclose) logical Input became a logical 1 and the relay went
through the reclose cycle.
Indicates that the 52A contact opened and the 52B contact closed but current is still flowing through
the relay.
Indicates that the DPU1500R has entered into the reclose sequence.
Indicates the Trip Fail Timer has expired. See Trip Fail Timer in the Recloser Section for more
details.
Indicates the Close Fail Timer has expired. See Close Fail Timer in the Recloser Section for more
details.
Indicates that the circuit breaker has opened after a CB fail to trip state has occurred. This open
state could have occurred when the breaker finally opened (slow breaker) or when manually
opened.
Indicates that the circuit breaker has closed after a CB fail to close state has occurred. This could
have only occurred external to the DPU1500R or a "Close" command issued via the DPU1500R MMI
or WinECP program.
Indicates that the 52A and 52B circuit breaker auxiliary contact inputs to the DPU1500R are in an
invalid state. See the Programmable Inputs Section specifically the 52A and 52B programmable
inputs for valid input states.
Indicates that the "GRD" programmable input was asserted and the active ground overcurrent
elements enabled. The "GRD" programmable input must be assigned to a physical input or feedback
term for this record to appear. It will also appear if the "GRD" logical input is forced Closed in the
Operations Menu (see Operations Menu Section). This record indicates the state of the "GRD"
input only.
Indicates that the "GRD" programmable input was de-asserted and the active ground overcurrent
elements disabled. The "GRD" programmable input must be assigned to a physical input or
feedback term for this record to appear. It will also appear if the "GRD" logical input is forced open
in the Operations Menu (see Operations Menu Section). This record indicates the state of the
"GRD" input only.
Indicates that the "PH3" programmable input was asserted and the active phase overcurrent elements
enabled. The "PH3" programmable input must be assigned to a physical input or feedback term for this
record to appear. It will also appear if the "PH3" logical input is forced closed in the Operations Menu
(see Operations Menu Section). This record indicates the state of the "PH3" input only.
Indicates that the "PH3" programmable input was de-asserted and the active phase overcurrent
elements disabled. The "PH3" programmable input must be assigned to a physical input or feedback
term for this record to appear. It will also appear if the "PH3" logical input is forced open in the
Operations Menu (see Operations Menu Section). This record indicates the state of the "PH3" input
only.
Indicates that a transition from an Alternate settings group took place and that the Primary settings are
active at this point in the record.
Indicates that a transition from a Alternate 2 or Primary settings group took place and that the Alternate
1 settings are active at this point in the record.
Indicates that a transition from a Alternate 1 or Primary settings group took place and that the Alternate
2 settings are active at this point in the record.
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