Areva MiCOM P225, Техническое руководство

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P225/EN FT/B11 User Guide
Page 40/52 MiCOM P225
4.11.7 The AUX OUTPUT RLY submenu : Auxiliary programmable output relays
In this menu the user assigns the MiCOM P225 internal and external data to the auxiliary
output relays (relays RL2, RL3, RL4 or RL5). These are changeover type relays (1 common,
1 normally open contact, 1 normally close contact). One relay is switched on when at least
one of the data items linked to it is valid (OR logic). It drops back once all its associated data
has disappeared.
Data assignable to the auxiliary output relays can be:
•
of the internal type
−
logic state of a protection function (instantaneous, time delayed signals)
−
logic state of an automatism or state function (blocking start, successful start)
−
the result of an “ AND ” logic equation
•
of the external type
−
signal received via logic inputs (“ EXT1 ”, “ EXT2 ”, “ EXT3 ” and “ EXT4 ”)
−
signal received via the communication network (remote control by the supervisor).
4.11.8 The LATCH AUX OUTPUT RLY submenu : Latching of the output relays
In this menu the user programs each auxiliary output relays (relays RL2, RL3, RL4 or RL5)
to have a latching operation or a self-reset operation.
When a relay set as latching receives an energisation signal, it remains energised even after
the signal has stopped. It will be necessary to come and acknowledge the P225 in order to
switch off this output relay.
N.B.: – There are 3 possible ways to acknowledge the P225, and thus
switch off one output relay in the event of latching:
- press
the
"
button
- send an acknowledge order to the configured logic input
on “ EXT RESET ”
- send a acknowledge remote order via the communication
network (order given by a supervisor)
– On loss of auxiliary power, the output relay drops back. On return
of auxiliary power, the output relay is re-energised, independently
of the fault status (still present or cleared).
4.11.9 The TRIP OUTPUT RLY submenu: Configuration of the trip output relay
Data which is going to control the relay RL1 (terminals 2-4-6) can be assigned using the
TRIP OUTPUT RLY sub-menu. This changeover type relay is used to give a tripping order to
the cut-off device.
The relay RL1 (tripping relay) has the same electrical and mechanical characteristics as the
other output relays.
Reminder: A certain number of the MiCOM P225 functions are based on the operation of
relay RL1, i.e.
−
The Trip Cause Statistics (refer to section 4.8)
−
The Latching of the Trip Output Relay (refer to section 4.11.8)
−
The CB fail function (refer to section 4.11.11)
−
The trip circuit supervision function (refer to section 4.11.14.1)
−
The Surveillance of the cut-off device (refer to section 4.11.14)
−
The record of fault values (refer to section 4.12.1)
−
The triggering of disturbance record (refer to section 4.12.2)
−
The display of data relating to the cut-off device (refer to section 4.12.3)