ABB REL 301 User manual

i
I.L. 40-386.12
It is recommended that the user of REL 301/302 equipment become acquainted with the information in this in-
struction leaflet and in I.L. 40-386.1 before energizing the system. Failure to do so may result in injury to per-
sonnel or damage to the equipment, and may affect the equipment warranty. If the REL 301/302 relay system
is mounted in a cabinet, the cabinet must be bolted to the floor, or otherwise secured before REL 301/302 in-
stallation, to prevent the system from tipping over.
All integrated circuits used on the modules are sensitive to and can be damaged by the discharge of static elec-
tricity. Electrostatic discharge precautions should be observed when handling modules or individual
components.
ABB does not assume liability arising out of the application or use of any product or circuit described herein.
ABB reserves the right to make changes to any products herein to improve reliability, function or design. Spec-
ifications and information herein are subject to change without notice. All possible contingencies which may
arise during installation, operation, or maintenance, and all details and variations of this equipment do not pur-
port to be covered by these instructions. If further information is desired by purchaser regarding a particular in-
stallation, operation or maintenance of equipment, the local ABB representative should be contacted.
Copyright ©ASEA BROWN BOVERI, ABB Power T&D Company Inc. 1993, 1994, 1995, 1996, 1997
This document contains information that is protected by copyright. All rights are reserved. Reproduction, adaptation, or
translation without prior written permission is prohibited, except as allowed under the copyright laws.
ABB does not convey any license under its patent rights nor the rights of others.
Trademarks
All terms mentioned in this book that are known to be trademarks or service marks are listed below. In addition,
terms suspected of being trademarks or service marks have been appropriately capitalized. ABB Power T&D
Company Inc. cannot attest to the accuracy of this information. Use of a term in this book should not be regarded
as affecting the validity of any trademark or service mark.
IBM and PC are registered trademarks of the International Business Machines Corporation
WRELCOM is the registered trademark of the ABB Power T&D Company Inc.
INCOM is the registered trademark of the Westinghouse Electric Corporation
!CAUTION

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I.L. 40-386.12
PREFACE
Scope
This manual describes the functions and features of the REL 301(Non-pilot Relay System) and REL 302 (Pilot
Relay System) Reclosing/Synchronism check option. It is intended primarily for use by engineers and techni-
cians involved in the installation, testing, operation and maintenance of the REL 301/302 Reclosing Option.
Equipment Identification
The REL 301/302 equipment is identified by the Catalog Number on the REL 301/302 chassis nameplate. The
Catalog Number can be decoded by using Catalog Number Table in Section 1.6 which is included for reference
only.
Production Changes
When engineering and production changes are made to the REL 301/302 equipment, a revision notation
(SUB #) is reflected on the appropriate schematic diagram, and associated parts information.
Equipment Repair
Repair work is done most satisfactorily at the factory. When returning equipment, contact your field sales rep-
resentative for RMR authorization. All equipment should be returned in the original packing containers if possi-
ble. Any damage due to improperly packed items will be charged to the customer.
Document Overview
Section 1 provides the Product Description. Section 2 presents the installation and test of the reclosing option.
Contents of Relay System
The REL 301/302 Relay System includes the style numbers, listed below, for each module.
Module Style Number
FT-10 Surge Protection 1502B35
Backplane Surge Protection 1612C53
Option (Reclosing/synch-check) 1614C19
Filter (Input Module) 1612C34
Microprocessor 1613C55
Display (Optional) 1613C69
Power Supply/Relay Outputs 1612C68
VT 1612C80
CT 1612C79
RS 232 Communication Interface 1614C94

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I.L. 40-386.12
TABLE OF CONTENTS
Section Number Page Number
SECTION 1PRODUCT DESCRIPTION
1.1 INTRODUCTION......................................................1-1
1.2 STANDARD FEATURES FOR RECLOSING OPTION .............................1-2
1.3 OPTIONAL FEATURES FOR RECLOSING OPTION .............................1-3
1.4 RECLOSE/SYNCHRONISM CHECK SOFTWARE................................1-3
1.5 SELF-CHECKING SOFTWARE ............................................1-3
1.6 UNIQUE REMOTE COMMUNICATIONS PROGRAM..............................1-3
1.6.1 ABB BULLETIN BOARD................................................1-4
1.7 SYNCHRONISM CHECK OPTION..........................................1-4
1.7.1 APPLICATION (120 VOLT SYNCHRONISM INPUT)..............................1-4
1.8 REL 301/302 CATALOG NUMBERS.......................................1-6
SECTION 2INSTALLATION AND TESTING OFRECLOSING/SYNCH CHECK OPTION
2.1 INSTALLING THE RECLOSING AND SYNCH-CHECK OPTION ......................2-1
2.2 TEST PLUGS AND FT SWITCHES ........................................2-1
2.3 EXTERNAL WIRING...................................................2-1
2.4 RECLOSING/SYNC-CHECK DESCRIPTION ...................................2-2
2.4.1 DISPLAY MODULE (MMI) ..............................................2-2
2.4.2 LED INDICATORS ....................................................2-2
2.4.3 LEDS AND DISPLAY RESET ............................................2-2
2.5 FRONT PANEL OPERATION .............................................2-4
2.5.1 READY MODE ......................................................2-4
2.5.2 SETTINGS MODE (SET)................................................2-4
2.5.3 TARGETS MODE.....................................................2-5
2.5.4 STATISTICS MODE ...................................................2-5
2.5.5 TEST MODE........................................................2-6
2.5.6 LOCKOUT MODE.....................................................2-7
2.5.7 DISABLING THE RECLOSER.............................................2-7
2.6 RECLOSING/SYNC-CHECK OPERATION.....................................2-7
2.7 TIMING DIAGRAM FOR ATYPICAL RECLOSING SYNC-CHECK SEQUENCE ...........2-8
2.8 ACCEPTANCE TEST .................................................2-13
2.9 DETAILED EVALUATION TESTS WITH BREAKER EMULATION ....................2-15
2.10 SYNCHRONISM/VOLTAGE CHECK OPTION ACCEPTANCE TEST ..................2-18
2.11 DETAILED EVALUATION TESTS SYNCHRONISM/VOLTAGE CHECK OPTION ..........2-19
2.12 FUNCTIONS DESCRIPTION.............................................2-21

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I.L. 40-386.12
LIST OF FIGURES
Figure Number Page Number
FIGURE 1-1 REL 301/302 RECLOSE/SYNCHRONISM CHECKOPTION MODULE .................1-1
FIGURE 2-1 REAR VIEW OF REL 301/302 WITH RECLOSER/SYNCH-CHECK OPTION INSTALLED....2-3
FIGURE 2-2 REL 301/302 SYSTEMS EXTERNAL CONNECTION (SHEET 1)...................2-26
FIGURE 2-3 REL 301/302 SYSTEMS EXTERNAL CONNECTION (SHEET 2)...................2-27
FIGURE 2-4 CONNECTION DIAGRAM FOR A-PHASE TOGROUND SYNC POTENTIAL ............2-28
FIGURE 2-5 CONNECTION DIAGRAM FOR PHASE TOPHASE SYNC POTENTIAL................2-29

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I.L. 40-386.12
REL301/302 RECLOSING SOFTWARE VERSION 1.20
FEATURES ADDED AND IMPROVEMENTS MADE
TO RECLOSING SOFTWARE VERSION 1.10
1. Improved the application flexibility by Adding a setting of “Sync Volt” with a selection of “Line/Bus” to cor-
rectlyindicatetheconnectionofsynchronisminputvoltageonlineorbusside.Previouslythe‘bus’reference
was fixed as the protection source and ‘line’ reference was fixed as the synchronism source. This improve-
ment causes LED indication, metering and targeting of ‘line’ and ‘bus’ to accurately reflect the connection
(e.g. HLDB, HBDL).
2. Additional functionality was added to the 52a input. To accommodate both existing logic and the new man-
ual close logic, the setting for the input 52a was changed from “52a?” to “52a/Mancls”. “52a/Mancls” has the
following setting options:
a) “Yes, 52a” for the 52b NOT 52a (pole disagreement) logic application. Previously, the setting for this logic
was “52a? = Yes”.
b) “Man Close” configures 52a input for use with manual close logic.
c) “No, Disabled” 52a input is not used by the reclosing logic functions.
3. Added a manual close function with the following settings. Manual close allows the operation of the REL
301/302 close contacts by energizing the 52a input. Manual close is available with the basic reclosing func-
tion and is enhanced when used with the optional voltage/synchronism check logic. The voltage/synchro-
nism check settings will be displayed only when the manual close function is enabled (“Man Close” = “Yes”)
and the optional voltage/synchronism check logic is present:
a) “Man Close” = “Yes/No” - Enable/disable manual close function
b) “Man HLDB” = “Yes/No” - Manual close with Hot Line Dead Bus voltage check.
b) “Man HBDL” = “Yes/No” - Manual close with Hot Bus Dead Line voltage check.
c) “Man SYNC”= “Yes/No” - Manual close with synchronism check.
d) “Max Wait” = “0-990 sec” or “No Time Limit”. Maximum time allowed to wait for voltage check and/or
sync check before reclosing logic goes to lockout state. If No Time Limit is chosen then
logic waits indefinitely for voltage or sync check.
4. Corrected metering and targeting error for 120 volt synchronism input voltage option. Previously, when us-
ing the 120 volt version of the reclosing logic, the voltage would be displayed as 70 volts instead of the cor-
rect value of 120 volts. In Version 1.20, of the firmware, the correct voltage value is displayed and targeted.
As stated in paragraph 1 above, this also allows the user to set the synchronism voltage reference for either
line side or bus side, maintain the reference (protection) voltage at 70 Vrms and display the correct voltage
level from the 120 volt synchronism voltage input.
5. Corrected the setting range of “Live” voltage from 30-70 Vrms to 50-120 Vrms and the “Dead” voltage from
0-30 Vrms to 0-50 Vrms for the 120 volt synchronism check option. Previously the voltage ranges were dis-
played as the 70 volt ranges even when the 120 volt synchronism check option had been supplied.

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I.L. 40-386.12
REL301 AND REL302 RECLOSING SOFTWARE VERSION 1.10
FEATURES ADDED AND IMPROVEMENTS MADE
TO RECLOSING SOFTWARE VERSION 1.01
1. Disabled contact test if recloser is in “remote only” settings mode or if recloser is disabled by setting
choice.
2. Added capability to test front panel reclosing LEDs and output contacts, via the Man-Machine Interface or
communications ports.
3. Added time stamping of reclosing targets. Time stamp data is only available through one of the communi-
cation ports.
4. Improved reclosing module communications by replacing “Recloser OFF” text with “Recloser Disabled”
when reclosure is disabled by setting choice.
5. Improved recloser flexibility by changing action taken by logic when maximum number of reclosures set-
ting (Cum.Recl) is reached. Now, instead of the recloser locking out the alarm (AL1) is set.
6. Improved function of RECLOSING IN SERVICE LED to reflect loss of dc, reclosing module failure, reclos-
ing being disabled by setting choice, and/or Man Machine Interface not in “Ready” or “Lockout” mode.
7. Improved recloser flexibility by adding programming capability to the In-Progress and Failed-Close con-
tacts. Now these contacts can be used to reflect various sync-check status output.
8. Added security for setting changes by preventing the disabling of local setting function from a communica-
tion port when front display is in value change mode.

I.L. 40-386.12
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1
1. 2. Standard Features for Reclosing Option
• Multi-Shot Reclosing with up to four reclosures.
• Reclosure dead Time:
0.01- 250 seconds.
• Selectable signal to initiate a reclosure:
52b only
RI only (internal from protection or external contact input)
52b or RI (internal from protection or external contact input)
52b and RI (internal from protection or external contact input)
• External reclose initiate input (EXT RI) to allow operation of reclosing function independent
of protection function
• Drive to lockout (DR LOCK) input for manual trips and breaker failure or bus lockout relay
input.
• Hold input (HOLD) to freeze reclose cycle at point input applied. Cycle resumes when input
removed.
• Manual close input (user selectable use of 52a input) for initiating close either directly or
through optional Voltage/Synchronism check logic.
• Two electrically separate close contacts (CLOSE-1, 2) for breaker closing
• Contact closure duration:
0.01 - 2 seconds.
• Failed Reclose function
Failed Reclose time: 1 - 250 seconds.
• Max cycle function
Max cycle time: 1 - 990 seconds.
• Follow breaker function.
• Breaker operation and maintenance control:
Programmable maximum reclosures before alarm, reset duration and recovery time.
• Reclosing event record:
Reclosure number, result, time and synchronism information are recorded as target.
Two most recent reclosing sequences target data are available through front panel LCD
display. Sixteen recent targets are available with remote communication.
• Statistic data for reclosures and LOCKOUTs.
• Test function for output contacts, LEDs and inputs.
• Real time clock to time stamp reclosing events and current time.
• Alarms for:
Relay Failure
Reclosure Failure
Reclosure LOCKOUT
Reclosing in progress

I.L. 40-386.12
1-3
1
• Capability to disable Reclosing and Synchronism function from front panel setting.
1. 3. Optional Features for Reclosing Option
• Selectable voltage check and synchronism check
Hot Line Dead Bus (HLDB) or Hot Bus Dead Line (HBDL) voltage supervision selection for
each reclosure and Manual Close.
Selectable live and dead voltage levels,
Synchronism angle and synchronism time
Wait time:
0 - 990 seconds or infinite.
Synchronism condition time:
0.01 - 20 seconds.
Switched synchronism settings allow HLDB,HBDL and /or SYNC within any reclose se-
quence and Manual Close.
• 120 Volt phase to phase synchronism source input
1.4 RECLOSE/SYNCHRONISM CHECK
SOFTWARE
The reclose/synchronism check software includes the following functions:
a. All the reclose and synchronism check functions.
b. All the MMI functions.
c. Selectable output function.
d. Reclosing event recording.
e. Test functions
1.5 SELF-CHECKING SOFTWARE
Self-checking software includes the following functions:
a. Program Memory Check Sum
Immediately upon power-up, the relay does a complete EPROM checksum of program
memory. Afterwards, the Reclosing Relay continually verifies the program memory check-
sum.
b. Power Up RAM Check:
Immediately upon power-up, the relay does a complete test of the RAM data memory.
c. EEPROM Check:
Settings are stored in EEPROM in three identical arrays. These arrays are continuously
checked by the program. If any of the three array entrees disagree, a EEPROM failure is
detected.
1. 6. Unique Remote Communications Program(RCP)
Special remote communications software, RCP is provided for obtaining fault, metering and cur-
rent settings data as well as sending data to the REL301/302. RCP can best be described as a
user friendly way of using a personal computer (PC) to communicate with ABB protective relays
by way of pull-downs menus. By coupling a computer with the appropriate communications

I.L. 40-386.12
1-4
1
hardware, it is possible to perform all relay setting and data interactions that are possible from
the man-machine interface. RCP is required to communicate with the REL301/302 via the com-
munication port(s). Refer to RCP instruction manual, I.L. 40-603, for detailed information.
1.6.1 ABB Bulletin Board
The ABB Relay Division Bulletin Board (BBS) is now on line. To obtain the latest version of RCP
software, please call the ABB BBS via modem at:
[phone] or [phone]
Using configuration settings 300-14,400 bits/second, 8 data bits, 1 stop bit, no parity and full du-
plex. Once the connection is established and login is completed, choose L - Library of Files from
the TOP menu. Next, select D - Down Load File, from the Library of Files, RCPxxx.EXE (where
xxx is the most recent version number e.g. 180 for version 1.80). RCPxxx.EXE is a compressed,
self extracting file which is expanded and installed by simply typing RCPxxx and following the
instructions. RCP Version 1.82 required to interact with Reclosing firmware Version 1.20.
1.7 Synchronism Check Option
REL 301/302 reclosing option can be
supplied with internal synchronism
check and voltage check, Hot Bus
Dead Line (HBDL) or Hot Line Dead
Bus (HLDB), logic. For relays supplied
with internal synchronism checking
logic, supervision of REL 301/302 re-
closing is settable for synchronism
and/or HBDL and/or HLDB for each
reclosing attempt.
REL 301/302 reclosing option syn-
chronism checking logic utilizes a
“windshield wiper” characteristic (see
Figure 1-2). This is, a combination of
synchronism voltage, magnitude mea-
surement and voltage angle difference
measurement. Both magnitude and
angle difference measurement must
be within the user’s set range to pro-
duce synchronism check permission
of reclosing.
1.7.1 Application (120 volt Synchronism Input)
The REL 301/302 has an option to accept a phase to phase voltage input for the “Line” Voltage
input. The “Line” Voltage inputs VS(FT-10, polarity) and VSR (FT-9, non-polarity), with this op-
tion, is from a phase to phase connected potential device with a 120 volt secondary voltage rep-
resentation of the primary phase to phase voltage. The “Bus” voltage reference is from the relay
protection, voltages VA, VBor VC,(FT-1, FT-2, and FT-3 respectively) and is selected by
choosingtheappropriate referencewithjumperP12ontheFiltermodule.(SeeI.L.40-386.1Fig-
ure 5-1 for jumper location). The appropriate reference is chosen by observing the polarity
Sync-Angle
WINDSHIELD WIPER CHARACTERISTIC
VMAX
VLine VBus
Figure 1-2
HOT
DEAD
VMIN

I.L. 40-386.12
1-5
1
marks of the Line potential device and selecting the “polarity mark” voltage with jumper P12.
Thatis,iftheLinevoltageis VAB,set jumper P12 fortheVaposition. Selection of the Bus voltage
reference described assumes phase rotation ABC. If the phase rotation is ACB, the Bus voltage
reference would be Vb. Synchronism voltage input reference to “Line” voltage and “Bus” voltage
can changed using the Synch Volt setting. For example, if the Synchronism Voltage input is from
what would be referred to as the “Bus”, the Synch Volt setting could be changed for correct LED,
LCD and targeting displays
The 120 volt, phase to phase synchronism voltage option (i. e. REL 301/302 style number, digit
6 is a T) corrects for the 30ophase shift difference between line to neutral protection voltage in-
put and line to line synchronism voltage input. Components have been added to hardwire the
phase shift compensation. Hence when viewing the “Bus-Line Angle” on the Man-Machine
Interface (MMI) display, synchronism is represented by 0oangular difference between Bus and
Line voltages, not -30o.
If voltage checking (HBDL or HLDB) is to used, either independently or with synchronism
checking, the setting of voltage threshold “V Max” is with reference to a 50-120 volts scale. In
other words if “V Max”(Live voltage) is desired to be 100 volts, set “V Max”to “100 Volts”. The
same is true for “V Min” with a range 0-50 volts.
All other settings for operation of REL 301/302 reclosing are the same as the 70 Volt Synchro-
nism voltage relay.

I.L. 40-386.12
1-6
1
MOUNTING
Horizontal - - - - - - - - - - - - - - - - - - - - - - - - - -H
Vertical- - - - - - - - - - - - - - - - - - - - - - - - - - - - V
TRIP
3-Pole Trip - - - - - - - - - - - - - - - - - - - - - - - - - - 3
CURRENT
1 A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A
5 A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B
BATTERY VOLTAGE
48 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
125 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
250 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
RECLOSING
Multi-shot Reclosing - - - - - - - - - - - - - - - - - - - - -R
Multi-shot Reclosing w/sync-check 70V* - - - - - - - - - - - S
Multi-shot Reclosing w/sync-check 120V** - - - - - - - - - - T
None- - - - - - - - - - - - - - - - - - - - - - - - - - - - -N
PILOT SYSTEM
Pilot (REL302) - - - - - - - - - - - - - - - - - - - - - - - - P
Non-Pilot (REL301)- - - - - - - - - - - - - - - - - - - - - - N
PROGRAMMABLE CONTACT OUTPUTS
5 Contacts including one trip rated contact - - - - - - - - - - 5
None- - - - - - - - - - - - - - - - - - - - - - - - - - - - -N
COMMUNICATIONS PORT
Flexible (PONI-Rear mounted)
NET - - - - - - - - - - - - - - - - - - - - - - - - - - - - -C
RS-232C (Default) - - - - - - - - - - - - - - - - - - - - - - R
RS-232C with IRIG-B Input - - - - - - - - - - - - - - - - - - B
FRONT PANEL INTERFACE
LCD Display - - - - - - - - - - - - - - - - - - - - - - - - - L
RS-232C PONI - - - - - - - - - - - - - - - - - - - - - - - - R
Both - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B
None- - - - - - - - - - - - - - - - - - - - - - - - - - - - -N
FT Test plug style # 13B8453G05
1.8 REL 301/302 Catalog Numbers (For Reference Only)
MV BC5NR1B3

I.L. 40-386.12
2-1
2
2. 1 INSTALLING THE RECLOSER/SYNC-CHECK OPTION
It is recommended that the user of this equipment becomes acquainted with the information in
these instructions and in I.L. 40-386.1 before energizing the REL 301/302 and associated as-
semblies. Failure to observe this precaution may result in damage to the equipment.
All integrated circuits used on the modules are sensitive to and can be damaged by the dis-
charge of static electricity. Electrostatic discharge precautions should be observed when oper-
ating or testing the REL 301/302.
Use the following procedure when separating the inner chassis from the
outer chassis; failure to observe this precaution can cause personal injury,
undesired tripping of outputs and component damage.
If the REL 301 or REL 302 was supplied with the Recloser/Sync-Check Option proceed to Sec-
tion 2.2.
a. Unscrew (counter clockwise rotation) the front cover knob and remove cover.
b. Open all FT switches.
DO NOT TOUCH THE OUTER CONTACTS OF ANY FT-10 SWITCH; THEY MAY
BE ENERGIZED.
c. Release frame latches by pushing the top and bottom (left and right ends for horizontal
mount relay) latches inward towards the center of the relay.
d. Push the center latch on the side of the relay towards the middle of the frame to release the
inner chassis.
e. Slide out the inner chassis.
f. Mount the Recloser/Synch-check Module in the middle connector on the rear of the micro-
processor module and snap the mounting posts into the appropriate holes on the Power
Supply module. (See Figure 2-3)
g. Reverse procedures a-e above when replacing the inner chassis into the outer chassis.
2. 2 TEST PLUGS AND FT SWITCHES
Test Plugs are available as accessories. They are inserted into the FT-10 switches for the pur-
pose of System Function Tests. See Section 1.6 for ordering information.
2. 3 EXTERNAL WIRING
All electrical inputs/outputs are made through the back of the REL 301/302. Figures 2-2 through
2-6 and Table 2-1 illustrate the location of various input/output signals. Additional Figures 2-4
and 2-5 show alternative connections for the synchronism voltage input. The vertical REL 301/
!CAUTION
!WARNING
Section 2. INSTALLATION and OPERATION

I.L. 40-386.12
2-2
2
302 isused as a reference in the Connection Specification Chart (similar for the horizontal REL
301/302).
2. 4 RECLOSER/SYNCH-CHECK DESCRIPTION
2.4.1 Display Module (MMI)
The reclosing function shares the front panel display and push-buttons with the protection dis-
play functions. The selection between protection (PROTECT) display and reclosing/synch-
check (RECLOSE) display is made by operating the white switch at the bottom right of the LCD
display to the desired function.
2.4.2 LED Indicators
Yellow LEDs in the center of the relay front panel are dedicated to indication of the recloser and
synch-check functions. See Table 2-2 for descripton of LED indicators.
2.4.3 LEDs and Display Reset
The push-button labelled RESET is used to reset all the LEDs and switch the display to
“READY” state, or LOCKOUT” state if reclosing is LOCKED OUT. (Display white switch must
be on “Recloser”.)
TABLE 2-1
CONNECTION SPECIFICATION CHART FOR RECLOSER/SYNC-CHECK OPTION
INPUT/OUTPUTS LOCATION
SIGNAL INPUTS
Reclosing/Synch-check Connection (Add Following Connections)
HOLD 2 Terminals on Terminal Strip TB5
EXT RI 2 Terminals on Terminal Strip TB5
DR LOCK 2 Terminals on Terminal Strip TB4
LINE VOLTAGE (Vs, Vsr) FT-9 and FT-10
BUS VOLTAGE (Va, Vb, or Vc) Voltage reference selectable by jumper P12 FT-1 thru FT-4
located on Filter Module (see I.L. 40-386.1 Figure 5-1)
CONTACT OUTPUTS
Reclosing/Synch-check Connection (Add Following Connections)
CLOSE - 1 2 Terminals on Terminal Strip TB2
CLOSE - 2 2 Terminals on Terminal Strip TB2
LOCKOUT 2 Terminals on Terminal Strip TB5
RECL_FAIL/OUT-2 2 Terminals on Terminal Strip TB5
IN PROGRESS/OUT-1 2 Terminals on Terminal Strip TB5
COMMUNICATION CONNECTION
The NET or RS232 Product Operated Network Interface (PONI) Communication module is mounted on the inside of the case to the
backplane module. For detailed information concerning communications port use cable connections see I.L. 40_386.1 Section 4.6).

I.L. 40-386.12
2-4
2
TABLE 2-2
FRONT PANEL RECLOSING AND SYNCH-CHECK LED INDICATOR CHART
RECLOSING IN SERVICE ON when dc power is on, recloser is passing self-check test and re-
closing is enabled by setting choice
LOCKOUt ON when reclosing logic is in the lockout state. LOCKOUT output
contact is also operated.
FAILED RECLOSE ON after a failed reclose. Can be cleared by depressing “RESET”
push-button or via remote “EXTERNAL RESET”. FAIL RECL/
OUT 2 is also operated.
SYNCHRONISM (*) ON when Bus & Line voltages are in Synchronism.
HBDL (*) ON when Bus is Live and Line is Dead.
HLDB (*) ON when Line is Live and Bus is Dead.
(*) The 3 lower LEDs are present only with the Synch-check Option. They are operational when the “SYNC SET” setting has been enabled.
2. 5 RECLOSING OPTION FRONT PANEL OPERATION
The front panel display is divided into three fields: Function, Value, and Mode.
The seven modes of operation, are shown at the top right of the display and are explained in
Table 2-3. The 4 push-buttons labeled SELECT, LOWER, RAISE, and ENTER, are used to in-
terface with the REL 301/302 mode display selection, scrolling within a selected mode and ac-
cepting relay settings.
The display default mode is automatically returned to when no push-button has been depressed
for 2 minutes. The display default mode is defined in Table 2-3.
By keeping the SELECT push-button depressed, the list of modes is scrolled in the sequence
shown in Table 2-3, at approximately a one second rate. For each selected mode, the corre-
sponding functions can be scrolled through with the LOWER and RAISE push-buttons (except
for default mode).
2.5.1 Ready Mode
Under normal conditions, the relay is in “READY” state, ready to start a reclosing sequence as
soon as the reclosure 1 (Recl 1) initiation condition is detected. See Table 2-5.
When a reclosing cycle starts, the recloser goes through the selected logic until either back to
“READY” state, in case of successful reclosing, or to LOCKOUT” state, if for any reason, no fur-
ther reclosing can be attempted.
2.5.2 Settings Mode (SET)
Change the mode to SET using the SELECT push-button. Table 2-6 lists all available settings
with their associated ranges which can be scrolled through forwards and backwards using the
LOWER and RAISE push-buttons. The current setting appears on the upper left of the display,
Function Value Mode

I.L. 40-386.12
2-5
2
and the current setting value on the
second line.
The current setting value can be
changed by pressing the ENTER
push-button once. An underscore
dash will then blink alternatively be-
tween the first and last characters on
the second line. At this point, other
values for the same setting can be
scrolled through by depressing the
LOWER or RAISE push-button. When
the desired value is reached, select it
by pressing ENTER until VALUE UP-
DATED! shows on the display. After
the value is updated the system then
returns to the function SET mode.
Reclosures 4 recl SET
Reclosures SET
—4 recl —
In order to restore the original value while in the middle of the scrolling values, press SELECT
instead of ENTER, the system returns to the SET mode, without updating the setting. In the SET
mode, a jump to the next mode is performed by pressing SELECT.
Scrolling proceeds at a faster rate after having continuously held down either button for about 3
seconds. At the end of a setting session, return to READY mode by pushing the SELECT push-
button until the READY appears on the display.
The settings relating to synch-check are listed and described at the end of each of the four re-
closure group settings. It is advised to adjust all settings in the order given in the list (i.e. using
the RAISE push-button to move to the next setting) since some settings might not be displayed
as the result of another setting choice. For example, selecting 2 reclosures disables the display
of settings for reclosures 3 and 4. Likewise, when a function works in conjunction with a timer,
disabling the function “hides” the timer setting.
2.5.3 Targets Mode TR
Change the mode to TR using the SELECT push-button. The relay saves the reclosing events
that have taken place during the last two reclosing sequences for front display purpose.
The last reclosing sequence is referred to as “Last Sequ”, and the previous one as “Prev Sequ”
in the function field of the display. The last 16 targets are recorded and can be checked remotely
via a RS232 or NET PONI interface.
MODE DESCRIPTION AS DISPLAYED
READY System ready to start a reclosing READY
sequence. The reclosing logic must Recloser V1.xx
be in this mode in order to operate.
When in the READY state, the
display default mode is the READY mode.
SETTINGS Check and/or change settings. SET
TARGETS Lists the data related to the two TR
last reclosing cycles.
STATISTIC List the status of the different MEM
counters.
TEST Shows selftest status and allows TEST
the testing of output contacts and
LEDs.
LOCKOUT Displays the reason for being in LOCKOUT
LOCKOUT state. When in the Reason for
LOCKOUT state, the default mode LOCKOUT
is the LOCKOUT mode.
DISABLED recloser disabled from “Recloser” Recl. Disabled
setting. When in the disabled state, Check Setting
the default mode is the disabled
mode.
TABLE 2-3

I.L. 40-386.12
2-6
2
For each event, the value field displays the associated number with the corresponding event.
The list of the possible messages or causes for successful and unsuccessful reclosures is
shown in the table below.
To scroll through the list of targets, depress the RAISE or LOWER push-buttons.
With the Synch-check option, each target is accompanied with the line and bus voltages, and
the angle between them at the time the target was recorded (at reclosing in case of a closure),
or at the time the reclosure was skipped for the given reason.
2.5.4 Statistics Mode MEM
Change the mode to MEM using the SELECT push-button. The following statistical information
can be scrolled through using the RAISE and LOWER push-buttons.
• 1st reclosures
• 2nd reclosures
• 3rd reclosures
• 4th reclosures
• Reclosures left (to alarm if enabled)
• Lockout
NOTE: In order to reset the above counters, select the [MEM] mode and press to-
gether the LOWER and ENTER push-buttons until the text “Reset Counters”
appears on the display.
2.5.5 Test Mode TEST
Change the mode to TEST using the SELECT push-button. The test display provides diagnos-
tic, LED and output contact testing capabilities for the REL 301/302 recloser module.
Output Contacts and LED tests
Scroll through the functions in the TEST mode using the RAISE or LOWER push-buttons until
the output contact to be tested appears in the function field of the display (top left). The contact
(and the corresponding LED in the case of the lockout/out 1 and fail reclose/out 2 contacts) are
operated by pressing the ENTER push-button. They remain active as long as ENTER is de-
pressed. The text “TESTING” appears simultaneously on the second line of the display.
When the synchronism/voltage check option is supplied, the 3 synchronism/voltage check LEDs
can be checked, by depressing the ENTER push-button when “LEDs” is displayed in the func-
tion field of the display and “Recloser” is displayed in the value field. When ENTER is depressed
al of the reclosing option LEDs light in top to bottom sequence.
Target Event As displayed
Close Close
Follow Breaker Follow Br
Reclose Block Input Recl Block
No HLDB, No HBDL or
No Synch-check No Sync
Table 2-4

I.L. 40-386.12
2-7
2
NOTE: Contact testing is disabled if recloser setting “Remote Set = Yes” or if reclos-
er is disabled by setting choice.
Self-Check status
A self-check of the main components on the module is continuously performed by the micropro-
cessor. The result is represented by a HEX value in the value field of the “Status” function. Refer
to I.L. 40-386.1, Section 4.4.2.1, paragraph d Test Mode for detailed status explanation.
2.5.6 Lockout Mode
The relay goes to “LOCKOUT” for any of the following reasons:
• Drive to lockout input energized
• Failed to close before the fail reclose max duration timer (when selected) expired
• Maximum cycle time reached (when selected)
• Agreement between 52a and 52b signals (when “52a/Mancls” is set to “Yes, 52a”)
• Wait timer expired without satisfying selected SYNC/HBDL/HLDB condition
2.5.7 Disabling The Recloser
The recloser can be enabled or disabled through the “Setting” mode. When the recloser is set
to “Disabled”, the recloser goes to the “Disabled” state and the display shows the text “Recloser
Disabled, Check Setting”; the Recloser In service LED will also go out.
Settings, Targets, Statistics and Test modes can still be accessed when the recloser is disabled.
To re-enable the recloser, set the “Recloser” back to “Enabled”. The recloser returns then to
“Ready” mode after resetting from LOCKOUT. The Recloser In Service LED will light when the
recloser is “ready”.
2. 6 RECLOSER/SYNC-CHECK OPERATION
Upon power-up, the recloser performs self-diagnostics routines. Detection of a continuing prob-
lem will cause the alarm relay ALARM 1 to drop out, and the recloser will be locked out. If no
problem was encountered, the recloser goes to READY state.
In the READY state, the recloser continuously monitors the input(s) selected to initiate the first
reclosure. The initiation setting can be the following:
Table 2-5:
As
Displayed Initiation Condition
52b only Looks only at 52b to initiate a new reclo-
sure.
3RI only Looks only at 3RI to initiate a new reclo-
sure.
Internal 3RI or External RI.
52b and 3RI Both signals 52b and 3RI must be
present within one second or less to ini-
tiate a new reclosure. Internal 3RI or
External RI.