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IB02602004E
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Instructional Literature
Effective: May 2008
Page
199
Instructions for the FP-6000 Protective Relay
12.2.2 Trip Log
The trip log contains detailed information on the last 16 trips. An
event is considered a trip if it causes either, or both, Trip 1 and
Trip 2 to activate. The trip log gives detailed information on the
state of all I/O, the state of all pickups and operations of
protective functions, and the state of all voltages and currents at
the time of trip. The trip log is useful in determining how, why,
and when a trip operation has occurred.
Each set of trip data recorded in the log is numbered from 1 to
16. The most recent trip event is always denoted number 1, the
oldest number 16. Once 16 trips are recorded, and a new trip
occurs, the oldest trip is discarded as the new trip is recorded.
Every time the Trip 1 or Trip 2 relay activates, the display
immediately goes to the Trip Log page (unless the user is
changing the settings). On this page is a list of trip events
starting with number 1 and going to 16. Each line of the trip log
will contain the index number (1-16), the cause of the event and
the date the event occurred. The majority of the time the Trip 1 or
Trip 2 output contacts are programmed to activate on protective
function operation. In this case the cause of the trip is logged into
the title of the trip log entry. On occasion one of the trip relays
will be programmed to operate on other events, like contact
input change for example. A summary of all causes used in the
trip log is in Table 70.
Table 70. Trip Log Cause of Trip Table.
Note:
The “Cause of Trip” is reported as “Logic” if the output Gate
Function is set to AND, NOR, or NAND.
CAUSE OF TRIP
CAUSE DESCRIPTION
27A UV
An Auxiliary Undervoltage operation
27M UV
A Main Undervoltage operation
46 Iunbal
A phase current Unbalance operation
47 Vunbal
A main voltage Unbalance operation
50P IOC
A Phase current Instantaneous Over Current operation
50R IOC
A Residual current Instantaneous Over Current operation
50X IOC
An IX (ground) current Instantaneous Over Current operation
51P TOC
A Phase current Time Over Current operation
51P2 TOC
A Phase current Time Over Current operation
51R TOC
A Residual current Time Over Current operation
51X TOC
An IX (ground) current Time Over Current operation
55A PF
An Apparent Power Factor operation
55D PF
A Displacement Power Factor operation
59A OV
An Auxiliary Overvoltage operation
59M OV
A Main Overvoltage operation
59N OV
A Neutral Overvoltage operation
Pwr Prot
A power Protection operation
81 OF
An Overfrequency operation
81 UF
An Underfrequency operation
AccuCurAlm
An Accumulated interrupted
BF
A Breaker Failure operation
Bkr Closed
A Closed Breaker state has caused an operation
Bkr Open
An Open Breaker state has caused an operation
BkrAlm
A Breaker Alarm (breaker state, breaker time, close or open
coil supervision) operation
BkrFailalm
A Breaker Failure Alarm operation
BrkOpAlm
A number of Breaker Operations Alarm operation
Close Bkr
A Close Breaker signal has caused an operation
COMM
A Communication command has caused an operation
ContactIn
A programmed Contact Input has caused an operation
CurDmdAlm
A Current Demand Alarm operation
Gnd Zint
A Ground current Zone Interlock operation
Logic
A programmed logic gate has caused an operation
Open Bkr
An Open Breaker signal
Ph Zint
A Phase current Zone Interlock operation
Pickup
A Pickup of a protective function has caused an operation
PwrAlm
A Power (Watt, var or VA) Alarm operation
PwrDmdAlm
A Power Demand (Watt, var or VA) Alarm operation
RLY Test
A Relay test has caused an operation
THD CurAlm
A THD Current Alarm operation
THD VolAlm
A THD Voltage Alarm operation
Zin Trip
A Zone Interlock operation
LOP ALM
Loss of Potential Alarm operation
THERM_TRIP
RTD and Thermal Replica Protection Operation
THERM_ALARM
RTD and Thermal Replica Alarm Operation
GRP_VAR
Var Protection Operation
ACC_I_1HOUR
Accumulated Interrupt Current per Hour Alarm Timeout
BKR_WEAR_ALM
Breaker Wear Alarm Timeout
BKR_WEAR_LOCK Breaker Wear Lockout Alarm Timeout