Areva MiCOM P521 Operator's manual

MiCOM P521
Current Differential Relay
Software Version 1.D
Update Documentation
P521/EN AD/B21

Update Documentation P521/EN AD/B21
MiCOM P521 Page 1/24
P521 UPDATE DOCUMENTATION
In the firmware version 1.D of P521, several changes on existing features have been
added. These are described with reference to the documentation listed below:
Release Version Documentation
29.01.2004 P521/EN M/B11 Technical Manual
Document Ref. Section Page No. Description
P521/EN FT/B11
3.4.2 13
Relay hardware or software alarms
DEFAULT CONFIG. : alarm message
re-written
3.5.3.7 32
Protection communication menu
Protocol - SDLC menu : “and IEEE
C37.94/2” removed from the menu
description
3.5.4.8 57 - 58
Inverting of the auxiliary output
relays
New section added
57
Inputs sub menu
Section re-numbered : was 3.5.4.8
3.5.4.9 58
AUTOMAT. CTRL menu : description
amended
3.5.4.10 59
Broken conductor sub menu
Section re-numbered : was 3.5.4.9
Cold load pick-up sub menu
Section re-numbered : was 3.5.4.10
3.5.4.11 60
AUTOMAT. CTRL menu : description
amended
Circuit breaker failure sub menu
Section re-numbered : was 3.5.4.11
3.5.4.12 62
AUTOMAT. CTRL menu : description
amended
Circuit breaker supervision sub
menu
Section re-numbered : was 3.5.4.12
3.5.4.13 62
AUTOMAT. CTRL menu : description
amended
P521/EN TD/B11
6.2 15
Logic inputs and outputs
Logic input : re-written
9.1 17
Dielectric withstand
Paragraphs 2 and 3 : amended

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Document Ref. Section Page No. Description
P521/EN AP/B11
53
MiCOM P521 trip circuit supervision
mechanism
Figure 22 : amended
54 Figure 23 : amended
3.8.1 55 Figure 24 : amended
5.8 74
Unconditional 4 wire pilot
communications for distances
greater than 1.2km (P595)
Note : amended
P521/EN CM/B11
9.3.2 32
Protection comms. fault
Figure 2 : amended
P521/EN MC/B11
2. 3
Definitions
Switch diagram : added to end of section
P521/EN AC/B11
5.1 13
Function of loopback test box
Figure 6 : amended
P521/EN VC/B11
- -
Hardware/software version history
and compatibility
Updated to reflect latest relay software

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USER GUIDE (P521/EN FT/B11)
3.4.2 Relay hardware or software alarms
Any software or hardware fault of the MiCOM relay generates a "hardware/software
alarm". If several alarms are generated they are all stored in their order of
appearance. The alarms are displayed in reverse order (the most recent first and the
oldest last). Each message is numbered and the total number of messages is
indicated below.
The user can read all the alarm messages with the aid of &,without entering the
password.
The acknowledgement of the relay alarm messages is IMPOSSIBLE if the fault is still
present. The alarm can only be acknowledged when the cause of the alarm has
disappeared.
The management of the WARNING LED is directly linked to the status of the alarms
stored in the memory.
ÞIf the fault is major (the relay cannot perform protection functions), the
WARNING LED is continuously illuminated and the watchdog contact will
operate.
ÞIf the fault is minor (no influence on the protection and automation function
e.g. SCADA communication failure), the WARNING LED flashes. This will
not cause operation of the watchdog contact.
Possible Hardware or Software alarm messages:
Major fault
SETTING ERROR: Setting error occurred due to data
memory fault
EEPROM ERROR CALIBR.: Calibration memory faulty
CT ERROR: Analogue channel faulty
PROT. COMMS FAIL: Protections comms card faulty
DEFAULT CONFIG.: Factory settings restored due to data
memory fault. This message will also be
displayed following a firmware upgrade.
Minor fault-
RAM ERROR: RAM supplied by battery faulty
BATTERY FAIL: Battery faulty (flat or not correctly fitted)
Note: The “Battery backed RAM memory” and “Battery failure” alarm
messages can be configured to display or not; YES or NO in
CONFIGURATION/Alarms menu. If NO is selected an alarm
will not be raised in the event of a Battery Fault.
COMM.ERROR: Internal communications faulty
CLOCK ERROR: Real time clock faulty
PROT. COMMS RECOVER: Recovering from transient comms fault
(back-up protection available)

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3.5.3.7 Protection communication menu
COMMUNICATION
Heading of the COMMUNICATION menu. To gain access
to the Protection Comms menu, press 2, 63 times then
2and 6. To gain access to the sub menu points, press
2.
Protection
Heading of the Protection Comms menu. To gain access
to the Protection Comms menu, press 2.
Protocol
SDLC
Displays the currently selected protocol for the protection
comms. Select from SDLC, NRZ using 8or 2and
enable your choice using 5.
Data Rate
64k
Displays the speed of protection comms transmission.
Select from: 9.6k, 19.2k, 56k, 64k and 2M bits per second
using 8or 2and enable your choice using 5.
Relay Address
A1
Displays the relays protection comms address. Select
from: A1, A2, A3, B1 etc. through to F3 using 8or 2
and enable your choice using the 5key.
Clock Source Ch1
INTERNAL
Displays the source of the protection comms clock. Select
from INTERNAL or EXTERNAL using 8or 2and enable
your choice using 5.
Comm Fail Timer
0 ms
Allows a settable delay for which a comms failure must be
present before an alarm is issued.
Comm Delay Tol
1 ms
Displays the maximum allowable propagation time
variation. Variations greater than the set value will result
in a bias characteristic modification, in order to stabilise
the relay.
Char Mod Time
1 s
Displays the duration the bias characteristic is modified
for, following a variation in the propagation delay greater
than the "Comm Delay Tol".
3.5.4.8 Inverting of the auxiliary output relays
This sub menu makes it possible to invert the state of the individual output relays
during the relay energized condition.
AUTOMAT. CTRL
Heading of the AUTOMAT. CTRL Menu. To gain access to
the Invert Output Relays menu, press 2, 6, 6 times, 2,
followed by
6
9 times.

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Invert Output
Relays
Heading of the Invert Output Relays sub menu. To gain
access to the sub menu content, press 2.
Output 2
No
Invert output relay RL2.
Select Yes or No.
Output 3
No
Invert output relay RL3.
Select Yes or No.
Output 4
No
Invert output relay RL4.
Select Yes or No.
Output 5
No
Invert output relay RL5.
Select Yes or No.
Output 6
No
Invert output relay RL6.
Select Yes or No.
Output 7
No
Invert output relay RL7.
Select Yes or No.
3.5.4.9 Inputs sub menu
This sub menu makes it possible to allocate any of the 5 logic inputs to either a label
or an automation function. The available selections are shown in the following table:
Label abstract Label signification
None No allocation
Unlatch Unlatches currently latched output contacts
52 a Status of 52a CB auxilliary contact
52 b Status of 52b CB auxilliary contact
Aux 1 Initates auxilliary timer AUX 1
Aux 2 Initates auxilliary timer AUX 2
Blk Log 1 Blocking logic 1
Blk Log 2 Blocking logic 2
Strt Dist Triggers the disturbance recorder
Cold L PU Enables cold load pick up functionality

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Label abstract Label signification
Log Sel 1 Logic select 1
Log Sel 2 Logic select 2
Change set Changes setting group (default setting group = 1)
θReset Resets the thermal state
Trip Circ Assigns an input for trip circuit supervision
Strt tBF Starts the breaker fail timer
Permis IT Initiate a permissive intertrip
Direct IT Initiate a direct intertrip
Comms RST Reset protection comms statistics
Log Trip Assigns an input to trip the circuit breaker
Log Close Assigns an input to close trip the circuit breaker
In addition to the input allocation the user can specify the required operating time for
auxiliary timers 1 and 2.
AUTOMAT. CTRL
Heading of the AUTOMAT. CTRL Menu. To gain access to
the Inputs menu, press 2, 6, 6 times, 2, followed by 6
10 times.
Inputs
Heading of the Inputs sub menu. To gain access to the
sub menu content, press 2.
Input 1
None
Allocation of logic input 1. To allocate a function to logic
input 1, press 5then use 8or 2to select the desired
function from the available list. Validate your choice using
5.
Input 2
None
Allocation of logic input 2. To allocate a function to logic
input 2, press 5then use 8or 2to select the desired
function from the available list. Validate your choice using
5.
Input 3
None
Allocation of logic input 3. To allocate a function to logic
input 3, press 5then use 8or 2to select the desired
function from the available list. Validate your choice using
5.
Input 4
None
Allocation of logic input 4. To allocate a function to logic
input 4, press 5then use 8or 2to select the desired
function from the available list. Validate your choice using
5.

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Input 5
None
Allocation of logic input 5. To allocate a function to logic
input 5, press 5then use 8or 2to select the desired
function from the available list. Validate your choice using
5.
Aux1 Time
tAux1 0 ms
Displays the time delay for auxiliary timer 1 (tAux1). To
adjust the time, press 5. The tAux1 time is adjustable
from 0 ms to 200 s in steps of 10 ms. Validate your
choice using 5.
Aux2 Time
tAux2 0 ms
Displays the time delay for auxiliary timer 2 (tAux2). To
adjust the time, press 5. The tAux1 time is adjustable
from 0 ms to 200 s in steps of 10 ms. Validate your
choice using 5.
3.5.4.10 Broken conductor sub menu
3.5.4.11 Cold load pick-up sub menu
The Cold Load PU allows the user to enable the cold load pick-up function and its
associated settings.
AUTOMAT. CTRL
Heading of the AUTOMAT. CTRL Menu. To gain access to
the Cold Load PU menu, press 2, 6, 6 times, 2,
followed by
6
12 times.
Cold Load PU
Heading of the Cold Load PU sub menu.
To gain access to the sub menu points, press 2.
Cold Load PU?
No
Enables the cold load pick-up function. Select Yes or No.
If the user selects (Yes), the following menu is displayed. If
the user selects (No), the cold load pick-up function is
disabled.
Cold Load PU
tI>? No
Associates the I> time delay threshold with the cold load
pick up function. To associate tI> with the cold load pick
up function, press 5and select (Yes). Select (No) if the
user does not wish to associate tI> with the cold load pick
up function. Validate your choice using 5.
Cold Load PU
tI>>? No
Associates the I>> time delay threshold with the cold load
pick up function. To associate tI>> with the cold load
pick up function, press 5and select (Yes). Select (No) if
the user does not wish to associate tI>> with the cold load
pick up function. Validate your choice using 5.

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Cold Load PU
tI>>>? No
Associates the I>>> time delay threshold with the cold
load pick up function. To associate tI>>> with the cold
load pick up function, press 5and select (Yes). Select
(No) if the user does not wish to associate tI>>> with the
cold load pick up function. Validate your choice using 5.
Cold Load PU
tI>>>>? No
Associates the I>>>> time delay threshold with the cold
load pick up function. To associate tI>>>> with the cold
load pick up function, press 5and select (Yes). Select
(No) if the user does not wish to associate tI>>>> with
the cold load pick up function. Validate your choice using
5.
Cold Load PU
tIe>? No
Associates the Ie> time delay threshold with the cold load
pick up function. To associate tIe> with the cold load pick
up function, press 5and select (Yes). Select (No) if the
user does not wish to associate tIe> with the cold load
pick up function. Validate your choice using 5.
Cold Load PU
tIe>>? No
Associates the Ie>> time delay threshold with the cold
load pick up function. To associate tIe>> with the cold
load pick up function, press 5and select (Yes). Select
(No) if the user does not wish to associate tIe>> with the
cold load pick up function. Validate your choice using 5.
Cold Load PU
tIe>>>? No
Associates the Ie>>> time delay threshold with the cold
load pick up function. To associate tIe>>> with the cold
load pick up function, press 5and select (Yes). Select
(No) if the user does not wish to associate tIe>>> with the
cold load pick up function. Validate your choice using 5.
Cold Load PU
tIe>>>>? No
Associates the Ie>>>> time delay threshold with the cold
load pick up function. To associate tIe>>>> with the
cold load pick up function, press 5and select (Yes).
Select (No) if the user does not wish to associate tIe>>>>
with the cold load pick up function. Validate your choice
using 5.
Cold Load PU
tI2>? No
Associates the I2> time delay threshold with the cold load
pick up function. To associate tI2> with the cold load pick
up function, press 5and select (Yes). Select (No) if the
user does not wish to associate tI2> with the cold load
pick up function. Validate your choice using 5.
Cold Load PU
tI2>>? No
Associates the I2>> time delay threshold with the cold
load pick up function. To associate tI2>> with the cold
load pick up function, press 5and select (Yes). Select
(No) if the user does not wish to associate tI2>> with the
cold load pick up function. Validate your choice using 5.