Areva MiCOM P341, Руководство по эксплуатации

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Operation Guide P341/EN O/B11
Introduction CHAPTER 1
MiCOM P341 Page 7/22
Note: *May vary according to relay type/model
The fixed function LEDs on the left hand side of the front panel are used to indicate
the following conditions:
Trip (Red) indicates that the relay has issued a trip signal. It is reset when the
associated fault record is cleared from the front display. (Alternatively the trip LED
can be configured to be self-resetting)*. The trip LED is initiated from relay 3, the
protection trip contact.
Alarm (Yellow) flashes to indicate that the relay has registered an alarm. This may be
triggered by a fault, event or maintenance record. The LED will flash until the alarms
have been accepted (read), after which the LED will change to constant illumination,
and will extinguish when the alarms have been cleared.
Out of service (Yellow) indicates that the relay’s protection is unavailable.
Healthy (Green) indicates that the relay is in correct working order, and should be on
at all times. It will be extinguished if the relay’s self-test facilities indicate that there is
an error with the relay’s hardware or software. The state of the healthy LED is
reflected by the watchdog contact at the back of the relay.
3.1.2 Relay rear panel
The rear panel of the relay is shown in Figure 2. All current and voltage signals*,
digital logic input signals and output contacts are connected at the rear of the relay.
Also connected at the rear is the twisted pair wiring for the rear RS485
communication port, the IRIG-B time synchronising input and the optical fibre rear
communication port which are both optional.
D E F C B A
IRIG B
TX PO RT 1 RX
Optional IRIG-B board D igital input connections
Current* and voltage input terminals Digital output (relays) connections
Rear comms port (RS485)
Power supply connection
D E F C B A
IRIG B
TX
PORT 1
RX
Optional IRIG-B board D igital input connections
Current* and voltage
input terminals
Digital output
(relays) connections
Rear comms port
(RS485)
Power supply
connection
Figure 2: Relay rear view
Refer to the wiring diagram in Appendix B for complete connection details.