Schweitzer Engineering SEL-351P User manual

SEL-351P
CONTROLE DO RELIGADOR
Quick-Start
Installation and User’s Guide
April 30, 1999

The software (firmware), schematic drawings, relay commands, and relay messages are copyright protected by the United
States Copyright Law and International Treaty provisions. All rights are reserved.
You may not copy, alter, disassemble, or reverse-engineer the software. You may not provide the software to any third party.
All brand or product names appearing in this document are the trademark or registered trademark of their respective holders.
Schweitzer Engineering Laboratories, Inc., SEL OGIC , and are registered trademarks of Schweitzer Engineering
Laboratories, Inc.
Copyright © SEL 1999 (All rights reserved) Printed in USA. This product is covered by U.S. Patent Numbers: 5,208,545;
5,317,472; 5,602,707; 5,515,227; 5,652,688; 5,349,490; 5,365,396; 5,041,737; 5,479,315; 5,731,943; 5,694,281; and U.S.
Patent(s) Pending. Foreign Patents issued.
SEL-351P Recloser Control Quick-Start Installation and User’s Guide 990430

SEL-351P Quick-Start Installation and User's Guide (Portuguese) i
TABLE OF CONTENTS
INTRODUCTION........................................................................................ 1
About This Quick-Start Installation and User's Guide.....................................................................1
Safety Information............................................................................................................................1
INSTALLATION ......................................................................................... 3
Mounting..........................................................................................................................................7
Panel Cutout .............................................................................................................................7
Mounting Holes........................................................................................................................7
Wire Harness Mounting ...........................................................................................................7
Side Panel Connections....................................................................................................................7
Extra I/O ...................................................................................................................................7
User-Supplied Connectors........................................................................................................8
Voltage Inputs ..........................................................................................................................8
Current Inputs...........................................................................................................................8
120 Vac Power Input................................................................................................................9
24 Vdc Battery..........................................................................................................................9
12 Vdc Power Output...............................................................................................................9
CONTROL Connector J5 Details ..................................................................................................10
24 Vdc Whetting Voltage.......................................................................................................10
Capacitor Voltage Monitor and Charger Control...................................................................10
Capacitor Charger Power .......................................................................................................10
Trip and Close Output Contacts .............................................................................................10
SF6 Pressure Sensor ...............................................................................................................11
Checks Before the SEL-351P is Put in Service..............................................................................11
COMMUNICATIONS................................................................................ 12
Getting Started With Communications ..........................................................................................12
Communications Connections Example ........................................................................................13
Serial Ports .....................................................................................................................................14
Serial Port Default Settings............................................................................................................14
EIA-232 Pinout Functions for Ports 2, 3, and F.............................................................................14
EIA-485 Pinout Functions for Port 1 .............................................................................................15
Serial Communications Port Pin Function Definitions..................................................................15
Communications Cables.................................................................................................................15
Cable Diagrams..............................................................................................................................16
Commands......................................................................................................................................16
Event Reports .................................................................................................................................20
Access Levels and Password Protection ........................................................................................21
View or Change Passwords............................................................................................................22

ii SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Disable Passwords..........................................................................................................................22
Password Jumper............................................................................................................................23
FRONT-PANEL INTERFACE................................................................... 25
Status and Trip Target LEDs..........................................................................................................26
Pushbuttons ....................................................................................................................................26
Pushbutton Primary Functions .......................................................................................................28
Operator Controls...........................................................................................................................31
SETTINGS ............................................................................................... 34
Curve Information ..........................................................................................................................34
Factory EZ Settings........................................................................................................................36
Settings Descriptions......................................................................................................................39
Settings Groups 1 (Main) and 2 (Alternate) EZ Settings...............................................................39
Global EZ Settings .........................................................................................................................60
TESTING.................................................................................................. 67
Testing the SEL-351P Recloser Control Without Regularly Installed Apparatus.........................67
Logic Settings Changes ..........................................................................................................67
Front Panel Status LEDs ........................................................................................................67
Recloser Simulator .................................................................................................................68
Output Contacts......................................................................................................................68
Overcurrent Element Timing Test Setup .......................................................................................69
BATTERY ................................................................................................ 70
Battery Operation Overview ..........................................................................................................70
Battery-Related Settings.................................................................................................................70
Battery Status .................................................................................................................................70
Battery Status via Front Panel................................................................................................70
Battery Status via Serial Port..................................................................................................71
Automatic Battery Load Test .........................................................................................................71
Battery Load Test via Front Panel .................................................................................................72
Battery Load Test via Serial Port ...................................................................................................72
SPECIFICATIONS ................................................................................... 74
Relay Element Pickup Ranges and Accuracies..............................................................................76
Instantaneous/Definite-Time Overcurrent Elements..............................................................76
Time-Overcurrent Elements ...................................................................................................76
Under- and Overvoltage Elements .........................................................................................77
Synchronism-Check Elements................................................................................................77

SEL-351P Quick-Start Installation and User's Guide (Portuguese) iii
Under- and Overfrequency Elements .....................................................................................77
Timers.....................................................................................................................................77
Metering Accuracy.........................................................................................................................78
Factory Assistance .........................................................................................................................78
STANDARD PRODUCT WARRANTY ..................................................... 79
Definition of Terms........................................................................................................................79
New Product Warranty...................................................................................................................79
Product Upgrade Policy .................................................................................................................79
Equipment Repair and Warranty....................................................................................................79
Limitations .....................................................................................................................................80
TABLES
Table 1: SEL EIA-232 Serial Communications Cable Guide.....................................................................15
Table 2: SEL-351P Recloser Control Command Summary........................................................................17
Table 3: Event Report Parameters...............................................................................................................21
Table 4: Access Level, Summary Information............................................................................................22
Table 5: Front-Panel Pushbutton Secondary Functions..............................................................................27
Table 6: Recloser Curve Designations........................................................................................................35
Table 7: US, IEC, and User-Programmable Curve Designations ...............................................................35
Table 8: EZ Settings Quick Reference........................................................................................................37
Table 9: Seconds-to-Cycles Conversion (60 Hz)........................................................................................46
Table 10: Recloser Interrupt Data...............................................................................................................60
FIGURES
Figure 1: SEL-351P Recloser Control Dimensions and Panel Cutout..........................................................3
Figure 2: SEL-351P Recloser Control Side Panel ........................................................................................4
Figure 3: SEL-351P Relay Inputs, Outputs, and Communications Ports......................................................5
Figure 4: Trip and Close Circuit, Breaker Status, and SF6 Pressure Connections.......................................6
Figure 5: SEL-351P Recloser Control Communications Connections Example........................................13
Figure 6: Jumper, Connector, and Major Component Locations on the SEL-351P Recloser
Control Main Board.................................................................................................................24
Figure 7: SEL-351P Recloser Control Front-Panel Interface .....................................................................25
Figure 8: Status and Trip Target LEDs.......................................................................................................26
Figure 9: Primary and Secondary Functions of Front-Panel Pushbuttons ..................................................26
Figure 10: Recloser Simulator Connections to SEL-351P (only a 52a available)......................................68

Introduction
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 1
INTRODUCTION
About This Quick-Start Installation and User's Guide
This SEL-351P Recloser Control Quick-Start Installation and User’s
Guide helps you install, communicate with, set, and test the SEL-351P in
its EZ (“easy”) mode of operation. The EZ mode performs traditional
recloser control functions and operations.
SEL designed the SEL-351P based on the SEL-351 Distribution Relay.
The SEL-351P has full SEL-351 Relay functionality together with a
modified user interface designed for recloser control. When using the
SEL-351P as a traditional line recloser control, it is only necessary to
access the EZ Level (Access Level E) Settings. See the SEL-351P
Manual Técnico for complete information regarding the full
functionality of the SEL-351P.
The following sections are covered in this documentation:
• Table of Contents • Settings
• Introduction • Testing
• Installation • Battery
• Communications • Specifications
• Front-Panel Interface
Safety Information
This Quick-Start Installation and User’s Guide does not cover all of the
possible conditions or circumstances that can occur during the
installation, operation, or testing of the SEL-351P. If additional
information is necessary to install, communicate with, or make settings
to the control that is not provided in this documentation, please refer to
the SEL-351P Manual Técnico or contact SEL for assistance.
This Quick-Start Installation and User’s Guide contains three types of
hazard statements:
CAUTION: indicates a potentially haza7rdous situation which, if not
avoided, may result in minor or moderate injury or equipment damage.
WARNING: indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
DANGER: indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

Introduction
2 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
!
CAUTION: The SEL-351P contains devices sensitive to Electrostatic
Discharge (ESD). When working on the relay module with cover removed,
work surfaces and personnel must be properly grounded or equipment
damage may result.
!
CAUTION: Do not connect this control to an energized recloser until all
control settings have been properly programmed and verified. Refer to the
Settings section of this guide for programming procedures. Failure to
comply can result in control and recloser misoperation, equipment damage,
and personal injury.
!
WARNING: Before installing, operating, maintaining, or testing this
equipment, carefully read and understand the contents of this guide.
Improper installation, handling, or maintenance can result in death, severe
personal injury, and/or equipment damage.
!
WARNING: This equipment is not intended to protect human life. Follow
all locally approved procedures and safety practices when installing or
operating this equipment. Failure to comply may result in death, severe
personal injury, and/or equipment damage.
!
DANGER: Contact with instrument terminals may cause electric shock that
can result in injury or death.

Installation
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 3
INSTALLATION
Figure 1: SEL-351P Recloser Control Dimensions and Panel Cutout

Installation
4 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Figure 2: SEL-351P Recloser Control Side Panel
Serial Port and IRIG-B:
The serial ports and IRIG-B are
explained in the
Communications section.
The Wake-up port is explained
in the front of Section 10 in the
SEL-351P Manual Técnico.
Ratings:
Ratings for optoisolated inputs,
output contacts, current inputs,
voltage inputs, and power
inputs/outputs are given in the
Specifications section.
N/C Symbol:
A few of the connector
terminals are labeled N/C (not
connected). The N/C option
shown in the VOLTAGES
connector J3 legend (e.g.,
•VS, VS or N/C) refers to an
ordering option (order all the
voltage inputs or just voltage
in
p
ut VA
)
.

Installation
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 5
DB9PORT F (FRONT)
EIA-232
* OUT107 CAN OPERATE AS EXTRA ALARM
PORT 3 (SIDE)
PORT 2 (SIDE)
PORT 1 (SIDE)
ISOLATED
EIA-485
JUMPERCONFIGURABLE
OUT101
A01
+
-
Battery Monitor/
Charger
12 Vdc Power
Supply
VOLTAGEINPUTSCURRENTINPUTSPROGRAMMABLE
OPTIOISOLATEDINPUTS
IA
1
A17
IN
101
IN
102
IN
103
IN
104
IN
105
IN
106
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
2
3
4
5
6
7
8
9
10
5
1
IB
IC
IN
VA
VB
VC
Chassis Ground
DB9
EIA-232
DB9
EIA-232 &
IRIG-B
OUT102
OUT103
OUT104
OUT105
OUT106
OUT107*
ALARM
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
DWG: MP351P003
Not Connected
5
9
4
8
3
7
2
6
1
VS
Not Connected
PROGRAMMABLEOUTPUTCONTACTS
ORDERINGOPTION
6
2
7
3
8
4
Control Power
Supply
Not Connected
+
-
24 Vdc Power
Supply
120 Vac 24 Vdc
DB9WAKE-UP PORT (SIDE)
IRIG-B
+ -
12345678
(apertar por 3 seg.)
BLOQUEIO
SEF
HABILITADO
PROTEÇÃO
BLOQUEADA
TERRA
HABILITADO
DESPERTAR
RELIGADOR
FECHADO
HABILITADO
REMOTO
FECHAR
ALTERNATIVOS
AJUSTES
ABERTO
ABRIR
RELIGADOR
FRONT-PANEL
OPERATORCONTROLS
CONNECTORJ3CONNECTORJ10
CONNECTORJ6
24 Vdc
12 Vdc
FRONT-PANEL TARGET LEDS
FONTE
CA
CONTROLE
HABILITADO
BATERIA
PROBLEMA
LINHA
VIVA TRIP CURVA RÁPIDA
ALTA
CORRENTE
RELÉ
FREQ.
CICLORESET BLOQUEADO AB C N SEF
ESTADO DO CONTROLE TIPO DE FALTA
GROUND
1
9
2
10
3
11
CONNECTORJ5
4
12
5
13
6
14
7
15
8
16
Charger Control
Pressure Sensor
Whetting Voltage
Pressure Indication
52a
52b
trip
close
Capacitor
Voltages
trip
close
Actuator
Operators
Charger Power
Charger Power
+
-
+
-
+
-
24 Vdc
Return for 24 Vdc and
Charger Power
+
-
+
-
+
-
+
-
Recloser Status
+
Capacitor Return
RELIGAMENTO
HABILITADO
Figure 3: SEL-351P Relay Inputs, Outputs, and Communications Ports

Installation
6 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
13
1
5
Cap
Charger
16
9
6
14
7
15
CT
Charger
Control
+
-
Magnetic
Actuator
Manual
Isolator
close
trip
SF6 Gas
Pressure
Sensor
+
-
-
+
close
cap
charged
>20 V
trip
close
break
Trip
and
Close
Logic
3
11
-
+
2
10
4
12
-
+
low
pressure
pressure
Pressure
Sensor
Whetting
Voltage
24
Vdc
Charger
Power
setting
trip cap
fully
charged
ba
breaker
aux.
contacts
52b
52a
CONTROL
connector
J5
+
recloser (partial)
see
Note 1
Note 1: Terminal 9 is also the return for the 24 Vdc
whetting voltage on terminal 1, when
terminal 1 is paralleled to additional
applications (e.g., to whet opto-inputs
IN101 - IN106). Terminal 1 has a load limit
of 0.1 A and should be fused for
protection (Bussman GMD-0.125 fuse or
equivalent).
recloser
(partial)
DWG: M351P024A
see Note 1
SF6 low pressure warning threshold
8
-
inside
SEL-351P
outside
SEL-351P
Figure 4: Trip and Close Circuit, Breaker Status, and SF6 Pressure Connections

Installation
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 7
Mounting
Refer to Figure 1.
Panel Cutout
The front view dimensions 7.000 x 13.000 inches (177.8 x 330.2 mm)
refer to the panel cutout dimensions needed for mounting the SEL-351P.
The panel cutout dimensions are slightly smaller than the SEL-351P
front-panel overlay, thus providing appropriate coverage of the
SEL-351P front panel when mounted, yet allowing for front panel
interface access. SEL-351P front panel overlay details can be seen in
Figure 7.
Mounting Holes
The six mounting holes are each 0.20 inch (5.2 mm) diameter. A size
#6-32 bolt or mounting stud, with lock nuts is recommended.
Wire Harness Mounting
The two studs on top of the SEL-351P can be used to attach wire clamps
for a wire harness draped over the top of the unit. The two studs accept
#10-32 lock nuts.
Side Panel Connections
Refer to Figure 2 and Figure 3. Figure 3 shows what is “behind” the
side panel connections shown in Figure 2.
!
WARNING: Connect the GROUND terminal to ground before making any other connection on the side
panel. The GROUND spade is 0.25 x 0.03 inches (6.4 x 0.8 mm).
Extra I/O
The extra I/O (output contacts OUT101 through ALARM and
optoisolated inputs IN101 through IN106) is not needed for the basic
recloser control functions. The extra I/O is available for SCADA
connection or other control and is not polarity sensitive. The
optoisolated inputs must be ordered with the appropriate dc voltage
rating.
The connectors for the extra I/O accept wire size AWG 24 to 12. Strip
the wires to 0.3 inch (8 mm) and install with a small slotted-tip
screwdriver.
Room for Connectors
and Wiring:
The dimensions in Figure 1 do
not make any allowances for
connectors and wiring that may
be attached to the side panel
(see Figure 2). Some connec-
tions (e.g., fiber-optic modems)
can protrude up to 4 inches
(about 10 cm) out from the
surface of the side panel.
Explained in Other Sections:
The serial ports and IRIG-B
shown in Figure 3 are
explained in the Communica-
tions section. The Wake-up
port is explained in the front of
Section 10 in the SEL-351P
Manual Técnico. The front-
panel LEDs and operator
controls shown in Figure 3 are
explained in the Front-Panel
Interface section.

Installation
8 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
User-Supplied Connectors
Connectors J3, J5, J6, and J10 on the side panel are the receptacle end
(female), with recessed male terminals inside. The user supplies the
complementary plug end (male), with recessed female terminals inside.
Each plug end (male) is a different size and uniquely keyed and can’t be
inserted into any other receptacle end (female):
J3: Molex Mini-Fit, Jr. order no. 39-01-2105
J5: Molex Mini-Fit, Jr. order no. 39-01-2165
J6: Molex Mini-Fit, Jr. order no. 39-01-2085
J10: Amp Mate-N-Lock II order no. 77021-1
The user-supplied plug ends (male) require the following corresponding
female terminals be installed in a recessed fashion inside:
Molex (30 total for J3, J5, and J6) order no. 39-00-0055
Amp (8 total for J10) order no. 770008-4
Special tools and procedures are required to install terminals/wiring into
the user-supplied connectors.
Voltage Inputs
Voltage inputs VA, VB, and VC are the three phase voltage inputs.
Voltage input VS is the synchronism check voltage input. Voltage input
VS can be used for other functions besides just synchronism check – see
the SEL-351P Manual Técnico. Different voltage input ordering
options are described briefly in the side notes with Figure 2.
Voltage input VA (VOLTAGES connector J3, terminals 10 [+] and 5 [-
]) also provides the frequency measurement (e.g., for underfrequency
load shedding). Voltage input VA is typically connected in parallel with
the 120 Vac power input (POWER connector J6, terminals 8 [+] and 4 [-
]) when three-phase voltage is not brought to the SEL-351P.
With factory settings, the front panel FONTE CA LED illuminates when
voltage input VA is energized with nominal 120 Vac. See the Voltage
Connections subsection in Section 2: Additional Installation Details in
the SEL-351P Manual Técnico for more details on voltage connections
and the front panel FONTE CA LED.
Current Inputs
Residual current is derived internally from phase current channels IA,
IB, and IC (1 A nominal). Residual ground overcurrent elements operate
off of this derived residual current.
Neutral ground and sensitive earth fault (SEF) overcurrent elements
operate off of current channel IN (0.05 A nominal).
Connect 67 or 120 Vac:
Connect 67 Vac line-to-neutral
or 120 Vac line-to-neutral to
voltage inputs VA, VB, VC, or
VS.
E
nable Fault Location if Three-
Phase Voltage is connected:
Use SET n command
[n = 1 (main settings),
n = 2 (alternate settings)]
Make the line parameter
settings:
Z1MAG, Z1ANG
Z0MAG, Z0ANG, LL
Enable fault locating:
EFLOC = Y
See SET commands in Table 2
in the Communications
section.

Installation
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 9
The EZ settings presume that current channel IN is connected residually
with phase current channels IA, IB, and IC by the user. This is required
to satisfy the pickup range sensitivity for fast and delay curve-ground
overcurrent elements (i.e., for ground overcurrent element pickups below
0.1 A secondary, a neutral ground overcurrent element is used
automatically; for ground overcurrent element pickups 0.1 A secondary
and above, a residual ground overcurrent element is used automatically).
See the Settings section for more EZ settings details.
120 Vac Power Input
120 Vac to power the SEL-351P is connected to POWER connector J6,
terminals 8 (+) and 4 (-).
24 Vdc Battery
The 24 Vdc battery to power the SEL-351P and external trip/close
capacitors (when 120 Vac is not present) is connected to POWER
connector J6, terminals 6 (+) and 2 (-). See the Battery section for
more details.
NOTE: Anytime 120 Vac power is applied to the SEL-351P, the unit
automatically turns on.
If no power is connected to the SEL-351P (unit is off) and then
24 Vdc battery power is connected to POWER connector J6
terminals 6 (+) and 2 (-), the unit remains off until the
DESPERTAR operator control is pressed.
12 Vdc Power Output
12 Vdc power is available on POWER connector J6, terminals 5 (+) and
1 (-). It is used for such applications as powering radios. It is current-
limited and has the following specifications:
Voltage Range Fluctuation: 11 - 14 Vdc
Maximum Capability: 6 W continuous; 13 W for one second
!
WARNING: No grounds can be installed on the circuits connected to the 12 Vdc voltage source. This
voltage source is grounded inside the SEL-351P.
12 Vdc Turned on With
Setting:
See Table 8 in Settings
section.

Installation
10 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
CONTROL Connector J5 Details
Refer to Figure 4. Figure 4 shows greater detail on what is connected to
either side of CONTROL connector J5.
24 Vdc Whetting Voltage
The nominal 24 Vdc whetting voltage from terminals 1 and 9 can vary
from 20 to 42 Vdc. If 24 Vdc-rated optoisolated inputs (inputs IN101
through IN106) are wetted with the nominal 24 Vdc whetting voltage,
the inputs can handle the possible upper voltage output (i.e., 42 Vdc).
These inputs will be “on” at this upper limit.
The 24 Vdc voltage also whets the 52a and 52b breaker auxiliary
contacts, which are connected through terminals 5 and 13, respectively.
!
WARNING: No grounds can be installed on the circuits connected to the 24 Vdc whetting voltage. This
voltage source is grounded inside the SEL-351P.
Capacitor Voltage Monitor and Charger Control
Terminals 6 and 14 monitor trip and close capacitor voltages,
respectively.
Terminal 6 indicates when the trip capacitor is fully charged (> 80 V).
The presumption is if the trip capacitor is fully charged to > 80 V, the
close capacitor is, likewise, fully charged.
Terminal 14 indicates when the close capacitor is charged to at least 20
V. Exceeding this 20 V threshold causes the capacitor charger control
output (terminals 10 and 2) to go below 24 Vdc (it is nominally 40 Vdc).
This low output signal to the external capacitor charger causes the
charger to go to a higher charge rate to quickly charge the capacitors to
90 V.
Capacitor Charger Power
A 20 to 40 Vdc range output on terminals 16 and 9 provides power to the
external capacitor charger.
Trip and Close Output Contacts
Terminals 7 and 15 trip and close the recloser, respectively, by
energizing a magnetic actuator in one direction or the other. The trip
and close output contacts are form c contacts, shown in their de-
energized state.
When the SEL-351P trips the recloser, the trip output contact moves to
the position to connect the trip capacitor (terminal 6) to the magnetic
Connect Battery and Charge
Capacitors for Auto-
Reclosing
Factory-default settings require
that the 24 Vdc battery be
connected and healthy and the
trip and close capacitors be
fully charged in order for auto-
reclosing to proceed after a
reclose interval times out.
Fuse the 24 Vdc
Whetting Voltage:
Read Note1 in Figure 4.

Installation
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 11
actuator. The de-energized close output contact provides a path for the
trip capacitor current. At the end of the trip operation, the break contact
opens momentarily to interrupt the trip current.
When the SEL-351P closes the recloser, the close output contact moves
to the position to connect the close capacitor (terminal 14) to the
magnetic actuator. The de-energized trip output contact provides a path
for the close capacitor current. At the end of the close operation, the
break contact opens momentarily to interrupt the close current.
Terminal 8, below the break contact in Figure 4, provides the return to
the trip and close capacitors.
SF6 Pressure Sensor
Terminals 3 and 11 provide whetting voltage for the SF6 gas pressure
sensor on the recloser. Terminals 4 and 12 take in the SF6 gas pressure
sensor signal and compare it to an EZ setting threshold for low pressure
indication. See the Settings section for more EZ settings details.
Checks Before the SEL-351P is Put in Service
!
CAUTION: Do not connect the SEL-351P to an energized recloser until all control settings have been
properly programmed and verified and all front-panel operator controls are in their proper state (see
Figure 7). Refer to the Settings section of this guide for programming procedures. Failure to comply
can result in control and recloser misoperation, equipment damage, and personal injury.
If the alternate settings are not going to be used, copy the main settings
(Settings Group 1) to the alternate settings (Settings Group 2) with the
COPY command (i.e., COP 1 2; see Table 2 in the Communications
section). The settings in both settings groups will then be the same. If
the AJUSTES ALTERNATIVOS operator control pushbutton is
accidentally pressed (switching the active settings group), the SEL-351P
still operates on the same settings. Refer to the Factory EZ Settings
subsection in the Settings section for more information on main and
alternate settings.
Set the date and time with the DATE and TIME commands (DAT and
TIM, respectively; see Table 2 in the Communications section).
Control Tests
Refer to the Testing section.

Communications
12 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
COMMUNICATIONS
Topics covered in this section:
• Serial Port Connectors
• Communications Cables
• Commands
• Access Levels
• Password Protection
You can view and change control settings, and obtain event and status
information either from the front-panel interface or via one of the serial
ports.
You can access many of the features of the SEL-351P from the front
panel; however, some features can only be accessed from one of the
serial ports. Table 2 provides the serial port commands (with
descriptions) as well as the corresponding front-panel pushbutton, if
applicable.
Getting Started With Communications
Before you attempt communications with the SEL-351P, via either the
serial ports or the front-panel interface, the following precautions must
be taken:
Verify that the SEL-351P has been properly installed and that
the settings have been programmed by qualified personnel.
Become familiar with and understand the information presented
in the Communications, Front-Panel Interface, and Settings
sections.
For serial port communications, the previous two precautions apply.
You must also carry out the following:
Select the appropriate communications cable (usually SEL Cable
C234A – see Table 1).
Choose a terminal emulation program on your personal
computer (PC) to communicate with the SEL-351P.
Set the communications parameters for the connected PC
communications port to the default settings. (Press the ENTER
key, and the SEL-351P will respond with a “=” prompt, which
indicates Level 0 access is established – see Table 4.)
Default Settings for
Serial Ports:
Baud Rate = 2400
Data Bits = 8
Parity = N
Stop Bits = 1
Terminal Emulation
Programs:
Examples of PC-based terminal
emulation programs include:
ProComm Plus™, Relay
Gold™, Microsoft Windows
®
Terminal™ and
HyperTerminal™, Smartcom™,
and Crosstalk™.
Hint:
For the best display, use
VT-100 terminal emulation or
the closest variation.

Communications
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 13
Communications Connections Example
You can connect the serial port to a computer serial port for local
communications or to a modem for remote communications. Other
devices useful for automated communications include the SEL-2020 or
SEL-2030 Communications Processors.
You can use a variety of terminal emulation programs on your personal
computer to communicate with the SEL-351P. Figure 5 presents some
example SEL-351P communications connections (see Table 1 and
contact SEL for more information).
Front Panel
SEL-2020
SEL-351P (#2)SEL-351P (#1)
SEL-351P (#1)
Computer
PORT 2
(METALLIC)
Cable #C273A
SEL-351P
SEL-351P SEL-351P
SEL-2020
Communications
Processor
SEL-351P (#2) SEL-351P (#32)
DATA AND TIME-SYNCHRONIZATION* CONNECTIONS
SEL-2020
Communications
Processor
PORT 2
Fiber-Optic Cable
#C273AFZ
or #C273AF0 SEL-2810
Optical Cable ConnectionMetallic Cable Connection
EIA-485 CONNECTIONS (if ordered with EIA-485 port)
PORT 1 PORT 1 PORT 1
LOCAL CONNECTIONS
C ONNECT TO THE SEL-2020
ONCE AND COMMUNICATE WITH
ANY
CONNECTED SEL R ELAY OR
R ECLOSER C ONTROL
PORT 2 Side Panel
PORT F Front Panel
OR
. . .
C
ONNECT TO THE SEL-351P
R
ECLOSER C ONTROL
INDIVIDUALLY
VIA THE F RONT -
P
ANEL S ERIAL P ORT
DWG: M351P056
* Demodulated IRIG-B time code can be input into the connector for either serial port 1 or
serial port 2, but not both at the same time.
PORT 2 Side Panel
PORT F Front Panel
Cable
#C234A
Figure 5: SEL-351P Recloser Control Communications
Connections Example
Protection, Integration,
Automation, and Control
by SEL.

Communications
14 SEL-351P Quick-Start Installation and User's Guide (Portuguese)
Serial Ports
Three EIA-232 serial communications ports are available:
• Serial Port 2 (side panel)
• Serial Port 3 (side panel)
• Serial Port F (front panel)
An EIA-485 serial communications port is available as an ordering
option:
• Serial Port 1 (side panel)
Serial Port Default Settings
The default settings for all serial ports are:
Baud Rate = 2400
Data Bits = 8
Parity = N
Stop Bits = 1
The serial port default settings can be changed from the front-panel
interface or from the serial communications port itself. After connecting
the appropriate communications cable and setting the terminal emulator,
press the ENTER key, and the control will respond with a “=” prompt,
which indicates Level 0 access is established – see Table 4.
EIA-232 Pinout Functions for Ports 2, 3, and F
Pin Port 2 Port 3 Port F
1 N/C* or +5 Vdc N/C* or +5 Vdc N/C
2 RXD RXD RXD
3 TXD TXD TXD
4 +IRIG-B N/C N/C
5, 9 GND GND GND
6 -IRIG-B N/C N/C
7 RTS RTS RTS
8 CTS CTS CTS
* Pin 1 not connected for Ports 2 and 3 when shipped from
the factory.
DWG: M351R078
DB-9 Connector Pinout (female)
for EIA-232 Serial Ports
Make Only One IRIG-B
Connection:
If making an IRIG-B connection,
connect demodulated IRIG-B time
code to either the serial Port 2 or
serial Port 1 connector (see the
following EIA-485 Pinout
Functions for Port 1), but not
both.
Wake-Up Port:
Figure 2 shows a Wake-Up Port.
Its pin functions are defined in the
following Serial Communica-
tions Port Pin Function
Definitions. See the front of
Section 10 in the SEL-351P
Manual Técnico for more
information on the Wake-Up Port.