16 REM615 ANSI 5.0 FP1 MOTOR PROTECTION AND CONTROL
1024
PROCESS LEVEL
USER LEVEL
Fault summary;
Trip timestamp, Function, Currents, Voltages, etc.
BASIC FUNCTIONS
IEC 61850-8-1
Modbus
IEC 103
DNP3
LHMI
WHMI
PCM600
Process
events
(FIFO)
128
Fault
records
(FIFO)
System and security-related events;
Configuration changes, Control, Login, etc.
2048
Audit
trail
events
(FIFO)
n…100
Disturbance
records
...7 yrs
Load profile
record
Historical load data captured at a periodical
time interval (Demand interval 1 ...180min)
Function specific data
Min/max demand currents, Operation counters, etc.
History view
Figure 8. Recording
and event capabil-
ities overview
11. Condition monitoring
The condition monitoring functions of the relay
constantly monitor the performance and the
condition of the circuit breaker.
The monitoring comprises the spring charging
time, SF6 gas pressure, the travel time and the
inactivity time of the circuit breaker. The
monitoring functions provide operational circuit
breaker
history data, which can be used for scheduling
preventive circuit breaker maintenance.
In addition, the relay includes a runtime counter for
monitoring of how many hours the motor has been
in operation thus enabling scheduling of time-
based preventive maintenance of the motor.
12. Trip-circuit supervision
The trip-circuit supervision continuously monitors
the availability and operability of the trip circuit. It
provides opencircuit monitoring both when the
circuit breaker is in its closed and in its open
position. It also detects loss of circuit-breaker
control voltage.
13. Self-supervision
The relay’s built-in self-supervision system
continuously monitors the state of the relay
hardware and the operation of the relay software.
Any fault or malfunction detected is used for
alerting the operator.
A permanent relay fault blocks the protection
functions to prevent incorrect operation.
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