SR 345 Transformer Protection System Training

SR 345 Transformer Protection System Training
SR 345 Motor Protection

Training
Ver. 1.0
Copyright 2010 GE Digital Energy 1

Copyright © 2010 GE Digital Energy - Multilin
All Rights Reserved. No part of this book, including content, Demo exercises,
calculations, interior design, cover design, and icons, may be reproduced or
transmitted in any form, by any means (electronic, photocopying, recording,
or otherwise) without the prior written consent of GE Digital Energy - Multilin.
GE Digital Energy - Multilin

215 Anderson Ave
Markham, Ontario, Canada
L6E 1B3
905-201-2098 (x2152)
For general information concerning GE Digital Energy - Multilin and its

products, training, or consulting programs, please visit our website at
www.gedigitalenergy.com, or contact us at:
US and Canada 800-547-8629 (x2152)

International 905-294-6222 (x2152)
Fax 905-201-2098
No patent liability is assumed with respect to the use of the information

contained herein. Moreover, because GE Digital Energy - Multilin is constantly
striving to improve its high quality products, the information contained in
this manual is subject to change without notice. Every precaution has been
taken in the preparation of this manual. Nevertheless, GE Digital Energy -
Multilin assumes no responsibility for errors or omissions. Neither is any
liability assumed for damages resulting from the use of the information
contained in this publication.
Screen shots in this book are based on current software, released at the time
this book was published. These screen shots are subject to change without
notice, as new revisions of software are released.

Introduction to the SR345
Features:
• Mechanical:
• small footprint
• withdrawable option
• Protection:
• Multiple protection groups with the added flexibility
of switching through a wide selection of current and
voltage protection and control features.
• Fast setup (Quick Setup) menu for power-system
setup and a simple current and voltage protection
configuration.
• Monitoring:
• Large four-line LCD display, LEDs, and an easy-to-
navigate keypad.
Equipped with serial (RS485), USB, and Ethernet ports, and a wide selection of protocols such as
Modbus, DNP3.0, 61870-5-103, or IEC 61850 GOOSE, the SR345 relay is the best-in-class for MCCs,
SCADA and inter-relay communications. The SR345 relay provides excellent transparency with respect
to power system conditions and events, through its four-line 20- character display, as well as the
EnerVista SR3 PC program. Conveniently located LEDs provide indication of relay operation, alarm,
and pickup, as well as breaker, and relay status.

Introduction to the SR345
• Event log:
• Waveform capture:
• LEDs:
• relay operation, alarm, and pickup, as well as
breaker, and relay status
• Programming Options:
• PC Software or
• Large four-line LCD display, LEDs, and an easy-to-
navigate keypad.
• Communications:
•Ports: RS485, USB, and Ethernet ports
• Support for multiple protocols:
Modbus, DNP3.0, 61870-5-103, or IEC 61850
GOOSE
• Multiple communication protocols for simultaneous
access when integrated into monitoring and control
systems
• Control features:
The SR345 relay provides the following key benefits:

• Withdrawable small footprint – saves on rewiring and space.
• Multiple protection groups with the added flexibility of switching through a wide selection of
overcurrent protection and control features.
• Fast setup (Quick Setup) menu for power-system setup and a simple overcurrent protection
configuration.
• Large four-line LCD display, LEDs, and an easy-to-navigate keypad.
• Multiple communication protocols for simultaneous access when integrated into monitoring and
control systems

SR345 Protection Overview
Target Applications:
2 Winding Transformers
• Power Transformers
• Generator Step-up Transformers
• Autotransformers

SR 345 – Order Code
SR 345 Order Code information

SR345 Hardware Overview
SR345 Hardware Overview: Front Faces Plate

The relay front panel provides an interface with a liquid crystal display, LED status indicators, control
keys, and a USB program port. The display and status indicators show the relay information
automatically. The control keys are used to select the appropriate message for entering setpoints or
displaying measured values. The USB program port is also provided for connection with a computer
running the EnerVista SR345 Setup software.
Display
The 40-character liquid crystal display (LCD) allows visibility under varied lighting conditions. When
the keypad and display are not being used, system information is displayed by scrolling through user-
defined default messages. These default messages appear only after a user-defined period of
inactivity. Pressing any key during default message scrolling returns the display to the last message
shown before the default messages appeared. Any trip, alarm, or start block is displayed immediately,
automatically overriding the default messages..
The Keypad
The SR345 display messages are organized into a Main Menu, pages, and sub-pages. There are four
main menus labeled Actual Values, Quick Setup, Setpoints, and Maintenance. Pressing the MENU key
followed by the MESSAGE key scrolls through the four Main Menu headers. Pressing the MESSAGE ►
key or the ENTER key from these Main Menu pages will display the corresponding menu Page. Use the
MESSAGE ▲ and MESSAGE ▼ keys to scroll through the Page headers.
SR 345 – Enhanced Draw-out Construction
Designed w/ Communication
minimal mounting cables (i.e.Fiber,
Removable IRIG-B & Copper, RJ45) do
requirements RS485 terminal for not need to be
troubleshooting disconnected to
Full draw-out with very without removing
low insertion force draw out relay
relay from service
Magnetic module Easy upgrade

remains in Chassis to advanced
during draw-out to options (i.e.
eliminate chances of upgrade to
causing open CT Ethernet)
circuit.
Compact size
Fully withdraw relay
allows easy retrofit
Captive screw on relay without having to
to existing panels
draw-out handle for secure open panel door to
(i.e.: S1, S2 cutouts)
connection disconnect Ethernet
connections
8/
GE Digital Energy - Multilin /
Back
The all other electrical and communications connections are located on the back of the SR 345

SR345 Electrical Installation Overview
Terminal
Assignment
The terminal assignment is shown here.

SR345 Electrical Installation Overview
Typical Wiring
Diagram
Typical wiring diagram

SR345 PC Quick Configuration
Hardware and software requirements

The following requirements must be met for the EnerVista SR345 Setup software.
• Microsoft Windows™ XP / 2000 is installed and running properly.
• At least 20 MB of hard disk space is available.
• At least 128 MB of RAM is installed.
The EnerVista SR345 Setup software can be installed from either the GE EnerVista CD or
the GE Multilin website at http://www.GEmultilin.com.
3.2.2.2 Installing the EnerVista SR345 Setup software
After ensuring the minimum requirements indicated earlier, use the following procedure to
install the EnerVista SR345 Setup software from the enclosed GE EnerVista CD.
1. Insert the GE EnerVista CD into your CD-ROM drive.
2. Click the Install Now button and follow the installation instructions to install the nocharge
EnerVista software on the local PC.
3. When installation is complete, start the EnerVista Launchpad application.
4. Click the IED Setup section of the Launch Pad toolbar.

Quick Connect Configuration
To Establish communication
using “Quick Connect”
Select Quick Connect
Select Interface type

USB or Ethernet
Once the SR345 configuration software is running select Quick Connect. Within the quick connect
window set the interface to USB and then select the assigned USB port under USB Device and then
select connect. If the computer can successfully communicate to the relay the message “Device
Quick Connect added to the site Quick Connect”.

Quick Connect - USB
Select
USB
Select
Com
Port
Select
Connect
If connection is
successful, you will
get this message.
Select OK

Quick Connect - Ethernet
Select
Ethernet
Enter IP
Enter Slave
Address
Select
Connect
If connection is
successful, you will
get this message.
Select OK

Device Setup – Add Site
1. Select “Device Setup”

2. Select “Add Site”
Select Device
Setup
Select Add Site
Enter Site Name
Site Name
appears here

Device Setup – Add Device - Ethernet
Select
Add Device
Enter a Device
Name
Select Interface
type
Enter IP
Address and
Slave Address
Select “Read Order

Code”. Order code
and F/W version
number will be read
Select OK to from the relay.
update main
screen

Application Example
Transformer Zone
Bus Zone
Feeder/Motor
Zone 52 52
52 52

Transformer Zone-345
Application Example
52 52 52 52
Feeder Zone-350
Motor Zone -345

Configure Quick Setup Protection

Configure Contact inputs
10 Contact
Inputs

Configure Relay Outputs

Configure Winding Breaker

Trip and close circuits with current monitoring
Breaker monitoring
Breaker monitoring (Trip and Close coil monitoring) is performed by a built-in voltage monitor on Form
A output relays: #1 Trip, and #2 Close. The voltage monitor is connected across each of the two Form
A contacts, and the relay effectively detects healthy current through the circuit. In order to do this, an
external jumper must be connected between terminals A2 and A3 for Trip coil monitoring, or/and B4,
and B5 for Close coil monitoring.
As long as the current through the Voltage Monitor is above the threshold of the trickle currents (see
Technical Specification for Form A output relays), the circuit integrity for the Trip (Close) coil is
effectively normal. If the Trip (Close) coil circuit gets disconnected, or if in general a high resistance is
detected in the circuitry, a Trip (Close) alarm will be set and the “ALARM” and “MAINTENANCE” LEDs
will be on.
This diagram show the two different connections of the breaker trip (close) coil to the relay’s trip
output #1 terminals (output #2 Close coil monitoring) for both no voltage monitoring and voltage
monitoring of the trip (close) circuit integrity.

Trip and close circuits with voltage monitoring
NOTE:
To monitor the trip coil circuit integrity, use the relay terminals A2 and B3 to connect the Trip coil, and
provide a jumper between terminals A2 (optional voltage) and A3.
NOTE:
To monitor the close coil circuit integrity, use the relay terminals B4 and A4 to connect the Close coil,
and provide a jumper between terminals B4 (optional voltage) and B5..

Configure Trip/Close Coil monitoring

Configure the Event Record

Configure the Transient Records

Setting Date and Time

Setting Front Panel

Installation

S2 System Setup

Hotlink Buttons - I/O
All input and output

status windows will
be opened.

Actual Values: Contact Inputs
A1 Status – Provides the state of the inputs and outputs
For Monitoring and troubleshooting, you can view the state of the of contact inputs

Actual Values: Output relays

Actual Values: Virtual Inputs
Monitor the state of 32 Virtual Inputs

Hotlink Buttons - Metering
All metered parameter windows will be opened.

Actual Values: Metering

Hotlink Buttons – Event Records
Opens the event recorder and

all its contents.

A3 Records - Event Records
Stores up to 256
events.
Contents of
event recorder
can be saved for
later viewing.

Hotlink Buttons – Transient Records
Opens the transient records

screen and retrieves the
waveforms from the relay.

A3 Records - Transient Records (Oscillography)
Transient Recorder
can also be launched
by selecting A3
Records / Transient
Records.
You can manually

trigger a waveform
capture or open a
previously captured
waveform.

A3 Records - Transient Records (Oscillography)

Hotlink Buttons – Trip Summary
Opens the trip summary screen

displaying all the available
protection elements in the
relay.
2 groups of settings are
available for each protection
element.

Trip Summary

Transformer Percent Differential

Transformer Instantaneous Differential

Restricted Ground Fault

Thermal Model

TOC (51P)

IOC (50P)

Fault information: Display and LED’s
HMI Display
provides live
viewing of front
panel remotely

Saving Settings to a file
1. In the online window (upper)

Click right mouse button to
display menu.
2. Select Read Device Settings

3. Select Browse.

4. Enter File name.

5. Select Open

6. Select Receive

File will be saved in the

offline window

Writing Settings to the Relay
1. In the offline window (lower)

Click right mouse button to
display menu.
2. Select Write Settings File to
Device

Writing Settings to the Relay
3. Select the device that the

setting will be loaded into.
4. Select Send

Keypad Menu Overview

Keypad Navigation
1). Press the Menu key

until all Four main
menus are visible.
2) Use the up/down
message arrows to
move the cursor to the
menu of interest. In this
case move the cursor
to Actual Values

Keypad Navigation
3). Press the right

message arrow or
Enter key to enter the
menu,
The left message
arrow or escape to exit
the menu.

Keypad Navigation
4). Use the arrows to

navigate to the
appropriate screen.

Keypad Navigation
5). Use the up/down

value keys to adjust the
setting value and the
the enter key.
6). To save the
displaced value into a
setpoint, press the
enter key.

Changing Setpoint Groups
Any Remote Inputs, Contact Inputs, Virtual inputs or Logic Elements can make
Group 2 active or block the group change.

Logic Elements
16 Logic Elements that provide decision making utilizing

any input, output or protection element

Logic Elements

Logic Elements
1
2
3
3
3
4
4
5
6
7
8

Logic Elements
5
3
3 4
3 4
6 2
7
8

Maintenance – Breaker Maintenance

Maintenance – Breaker Monitor

Maintenance – Relay Maintenance

Advanced Communications
“Flexible Communication Options for New & Existing Applications”
Multiple protocol options enable easy Serial
integration into existing communication Communications
infrastructure:
Ethernet Copper Ethernet
Communications
Protocols:
IEC 61850 GOOSE, MODBUS TCP/IP, Fiber Ethernet
Communications
DNP 3.0, IEC60870-5-104
Serial
Port: RS485
Protocols:
MODBUS RTU, DNP 3.0,
IEC60870-5-103
Front Panel:
Port: USB (USB-B port) 72 /
GE Digital Energy - Multilin /

Communications options: USB
USB:
- Most common modern computer interface.
- Fast Point to Point connection for
configuration, monitoring and troubleshooting

Communications options: RS485
RS485:
-Most common Substation LAN interface
standard
RS232
1 2 32

Communications options: Ethernet
Ethernet:
-Most common LAN interface standard
throughout the world
-Multiple services over one network
- High speed Flexable LAN topologies
- Flexable LAN topologies and media:

IEC 61850 GOOSE
IEC 61850 GOOSE messaging:

- Vendor independent Peer to Peer digital data exchange service across an
Ethernet network.
Benefits:
-allows the exchange of critical protection and control data
-Reduces or eliminates the cost and time required to hard wire I/O between relays
supporting this feature.
Speed: worst case delay: 14msec from state change of digital point configured in
transmission block until transmission out the port.
Typical applications:
- Breaker failure
- Cascading Feeders Protection

IEC61850 Setup: Port configuration
Serial
Communications
10/100 base-Tx (Twisted pair

Copper Ethernet port)
Fiber optic Ethernet port

IEC61850 GOOSE Configuration: SR345 to SR345

IEC61850 GOOSE Transmission:



IEC61850 GOOSE Reception:







SR345 & UR IEC61850 GOOSE Setup: UR Reception





SR345 & UR IEC61850 GOOSE Setup: UR Transmission



SR345 IEC61850 Setup: SR345 Reception

SR 345 Transformer Protection System Training

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SR 345 Motor Protection

Copyright 2010 GE Digital Energy 1

GE Digital Energy - Multilin

For general information concerning GE Digital Energy - Multilin and its

US and Canada 800-547-8629 (x2152)

No patent liability is assumed with respect to the use of the information

Copyright 2010 GE Digital Energy 2

Copyright 2010 GE Digital Energy 3

The SR345 relay provides the following key benefits:

Copyright 2010 GE Digital Energy 4

Copyright 2010 GE Digital Energy 5

SR 345 Order Code information

Copyright 2010 GE Digital Energy 6

SR345 Hardware Overview: Front Faces Plate

Magnetic module Easy upgrade

Copyright 2010 GE Digital Energy 8

The terminal assignment is shown here.

Copyright 2010 GE Digital Energy 9

Typical wiring diagram

Copyright 2010 GE Digital Energy 10

Hardware and software requirements

Copyright 2010 GE Digital Energy 11

Select Quick Connect

Select Interface type

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1. Select “Device Setup”

Select Add Site

Enter Site Name

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Select “Read Order

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All input and output

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A1 Status – Provides the state of the inputs and outputs

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Monitor the state of 32 Virtual Inputs

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All metered parameter windows will be opened.

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Copyright 2010 GE Digital Energy 37