GE Multilin 345 User manual

Instruction manual
345 revision: 2.3x
Manual P/N: 1601-9098-AF
GE publication code: GEK-113568P
*1601-9098-AF*
GE
Grid Solutions
345
Transformer Protection
System
Transformer protection and control
LISTED
52TL
IND.CONT. EQ.
E83849

© 2017 GE Multilin Incorporated. All rights reserved.
GE Multilin 345 Transformer Protection System instruction manual for revision 2.3x.
345 Transformer Protection System, EnerVista, EnerVista Launchpad, and EnerVista
3 Series Setup are trademarks or registered trademarks of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This documentation is
furnished on license and may not be reproduced in whole or in part without the permission
of GE Multilin. The content of this manual is for informational use only and is subject to
change without notice.
Part number: 1601-9098-AF (September 2017)
Storage
Store the unit indoors in a cool, dry place. If possible, store in the original packaging. Follow
the storage temperature range outlined in the Specifications.
To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-
energized state once per year, for one hour continuously.
This product cannot be disposed of as unsorted municipal waste in the European
Union. For proper recycling return this product to your supplier or a designated
collection point. For more information go to www.recyclethis.info.

Note GENERAL SAFETY PRECAUTIONS - 345
• Failure to observe and follow the instructions provided in the equipment manual(s)
could cause irreversible damage to the equipment and could lead to property
damage, personal injury and/or death.
• Before attempting to use the equipment, it is important that all danger and
caution indicators are reviewed.
• If the equipment is used in a manner not specified by the manufacturer or
functions abnormally, proceed with caution. Otherwise, the protection provided by
the equipment may be impaired and can result in Impaired operation and injury.
• Caution: Hazardous voltages can cause shock, burns or death.
• Installation/service personnel must be familiar with general device test practices,
electrical awareness and safety precautions must be followed.
• Before performing visual inspections, tests, or periodic maintenance on this device
or associated circuits, isolate or disconnect all hazardous live circuits and sources
of electric power.
• Failure to shut equipment off prior to removing the power connections could
expose you to dangerous voltages causing injury or death.
• All recommended equipment that should be grounded and must have a reliable
and un-compromised grounding path for safety purposes, protection against
electromagnetic interference and proper device operation.
• Equipment grounds should be bonded together and connected to the facility’s
main ground system for primary power.
• Keep all ground leads as short as possible.
• At all times, equipment ground terminal must be grounded during device
operation and service.
• In addition to the safety precautions mentioned all electrical connections made
must respect the applicable local jurisdiction electrical code.
• Before working on CTs, they must be short-circuited.
• LED transmitters are classified as IEC 60825-1 Accessible Emission Limit (AEL) Class
1M. Class 1M devices are considered safe to the unaided eye. Do not view directly
with optical instruments.

Safety words and definitions
The following symbols used in this document indicate the following conditions
Note Indicates a hazardous situation which, if not avoided, will result in death or serious
injury.
Note Indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
Note Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
Note Indicates practices not related to personal injury.
For further assistance
For product support, contact the information and call center as follows:
GE Grid Solutions
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Worldwide telephone: [phone]
Europe/Middle East/Africa telephone: [phone]
North America toll-free: 1 800 547 8629
Fax: [phone]
Worldwide e-mail: multil[email protected]
Europe e-mail: multil[email protected]
Website: http://www.gegridsolutions.com/multilin

345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL TOC-1
Table of Contents
1. INTRODUCTION Overview ............................................................................................................................ 1 - 1
Description of the 345 Transformer Protection System.............................. 1 - 2
345 order codes.............................................................................................................. 1 - 7
Specifications................................................................................................................... 1 - 9
Password security................................................................................................................1 - 9
Protection.................................................................................................................................1 - 9
Metering....................................................................................................................................1 - 11
Data capture ..........................................................................................................................1 - 12
Control.......................................................................................................................................1 - 12
Monitoring................................................................................................................................1 - 14
Inputs .........................................................................................................................................1 - 14
Outputs......................................................................................................................................1 - 15
Power supply..........................................................................................................................1 - 15
Communications ..................................................................................................................1 - 16
Testing and certification ...................................................................................................1 - 17
Physical.....................................................................................................................................1 - 18
Environmental........................................................................................................................1 - 19
2. INSTALLATION Mechanical installation ...............................................................................................2 - 1
Dimensions..............................................................................................................................2 - 1
Product identification .........................................................................................................2 - 3
Mounting ..................................................................................................................................2 - 4
Standard panel mount.....................................................................................................2 - 4
Drawout unit withdrawal and insertion.....................................................................2 - 9
IP20 Cover (optional) ...........................................................................................................2 - 10
Electrical installation .................................................................................................... 2 - 11
Typical Wiring Diagrams ..................................................................................................2 - 12
345 Terminal identification..............................................................................................2 - 14
Wire range...............................................................................................................................2 - 17
RMIO module installation..................................................................................................2 - 18
Phase sequence and transformer polarity..............................................................2 - 19
Current inputs ........................................................................................................................2 - 19
Ground and sensitive ground CT inputs ....................................................................2 - 20
Zero sequence CT installation........................................................................................2 - 21
Control power ........................................................................................................................2 - 21
Contact inputs .......................................................................................................................2 - 22
Trip1 and Trip2 output relays .........................................................................................2 - 23
Serial communications......................................................................................................2 - 25
IRIG-B .........................................................................................................................................2 - 26
3. INTERFACES Front control panel interface.................................................................................... 3 - 2
Description ..............................................................................................................................3 - 3
Display.......................................................................................................................................3 - 4
Working with the Keypad...............................................................................................3 - 4
LED status indicators - Front panel with non-programmable LEDs ............3 - 5
LED status indicators - Front panel with programmable LEDs ......................3 - 7
Relay messages....................................................................................................................3 - 8
Target messages.................................................................................................................3 - 8
Self-test errors......................................................................................................................3 - 9
Flash messages...................................................................................................................3 - 11

TOC-2 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Software setup.................................................................................................................3 - 12
Quick setup - Software interface.................................................................................. 3 - 12
EnerVista 3 Series Setup Software...............................................................................3 - 12
Hardware and software requirements.....................................................................3 - 13
Installing the EnerVista 3 Series Setup software..................................................3 - 13
Upgrading the software...................................................................................................3 - 16
Connecting EnerVista 3 Series Setup to the relay ............................................... 3 - 16
Configuring serial communications...........................................................................3 - 16
Using the Quick Connect feature ................................................................................3 - 17
Configuring Ethernet communications ....................................................................3 - 19
Connecting to the relay ...................................................................................................3 - 20
Working with setpoints and setpoint files................................................................ 3 - 21
Engaging a device..............................................................................................................3 - 21
Entering setpoints...............................................................................................................3 - 21
Setting programmable LEDs..........................................................................................3 - 22
File support ............................................................................................................................3 - 23
Using setpoint files .............................................................................................................3 - 23
Downloading and saving setpoint files ....................................................................3 - 24
Adding setpoint files to the environment ................................................................3 - 24
Creating a new setpoint file...........................................................................................3 - 25
Upgrading setpoint files to a new revision .............................................................3 - 25
Printing setpoints and actual values.........................................................................3 - 26
Printing actual values from a connected device .................................................3 - 27
Loading setpoints from a file.........................................................................................3 - 28
Uninstalling files and clearing data............................................................................3 - 28
Upgrading relay firmware............................................................................................... 3 - 29
Loading new relay firmware .........................................................................................3 - 29
Advanced EnerVista 3 Series Setup features.......................................................... 3 - 31
Transient recorder (Waveform capture)...................................................................3 - 31
Protection summary .........................................................................................................3 - 34
Password security..............................................................................................................3 - 36
4. ACTUAL VALUES Actual values overview ................................................................................................4 - 1
A1 Status.............................................................................................................................4 - 2
Clock........................................................................................................................................... 4 - 2
Contact inputs....................................................................................................................... 4 - 2
Output relays ......................................................................................................................... 4 - 2
Logic elements ...................................................................................................................... 4 - 3
Virtual inputs .......................................................................................................................... 4 - 3
Remote inputs ....................................................................................................................... 4 - 3
Remote outputs .................................................................................................................... 4 - 3
Contact inputs summary ................................................................................................. 4 - 4
Output relays summary ................................................................................................... 4 - 4
Logic elements summary ................................................................................................ 4 - 4
GOOSE status......................................................................................................................... 4 - 5
GOOSE HDR status .............................................................................................................. 4 - 5
61850 status .......................................................................................................................... 4 - 5
A2 Metering .......................................................................................................................4 - 6
Winding 1 Current ...............................................................................................................4-6
Winding 2 Current ...............................................................................................................4-6
Transformer Differential and Restraint Currents .................................................. 4 - 7
Transformer Thermal Capacity..................................................................................... 4 - 8
Current Demand 1(2) .......................................................................................................... 4 - 8
Clear current demand 1 (2)..............................................................................................4 - 9
A3 Records.........................................................................................................................4 - 10
Event records......................................................................................................................... 4 - 10

345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL TOC-3
Transient records .................................................................................................................4 - 12
Fault report..............................................................................................................................4 - 13
Learned data..........................................................................................................................4 - 14
Clear learned data ...............................................................................................................4 - 14
Clear event record ...............................................................................................................4 - 14
Clear transient record ........................................................................................................4 - 14
Clear thermal capacity record.......................................................................................4 - 15
Clear fault report ..................................................................................................................4 - 15
A4 Target messages..................................................................................................... 4 - 16
5. QUICK SETUP -
FRONT CONTROL
PANEL
Quick Setup settings..................................................................................................... 5 - 2
6. SETPOINTS Setpoints Main Menu.................................................................................................... 6 - 1
Setpoint entry methods ....................................................................................................6 - 2
Common setpoints .............................................................................................................6 - 2
Logic diagrams......................................................................................................................6 - 3
Setting text abbreviations................................................................................................6 - 4
S1 Relay setup................................................................................................................. 6 - 5
Clock...........................................................................................................................................6 - 5
Password security................................................................................................................6 - 7
Access passwords..............................................................................................................6 - 8
Communications ..................................................................................................................6 - 10
RS485 interface ...................................................................................................................6 - 10
Ethernet...................................................................................................................................6 - 10
Modbus....................................................................................................................................6 - 11
IEC 60870-5-103 serial communication ..................................................................6 - 12
IEC60870-5-104 protocol................................................................................................6 - 12
DNP communication.........................................................................................................6 - 12
3 Series IEC 61850 GOOSE details...............................................................................6 - 13
Event recorder .......................................................................................................................6 - 14
Transient recorder ...............................................................................................................6 - 15
Fault report..............................................................................................................................6 - 16
Front panel with non-programmable LEDs .............................................................6 - 17
Front panel with programmable LEDs .......................................................................6 - 18
Installation...............................................................................................................................6 - 20
S2 System Setup ............................................................................................................6 - 21
Current sensing.....................................................................................................................6 - 21
Power system ........................................................................................................................6 - 22
Transformer ............................................................................................................................6 - 22
Transformer setup phase & magnitude compensations ..................................6 - 23
Winding breakers .................................................................................................................6 - 35
S3 Protection.................................................................................................................... 6 - 37
Breaker tripping ....................................................................................................................6 - 37
Transformer percent differential (87T)........................................................................6 - 40
Transformer instantaneous differential (50/87).....................................................6 - 45
Restricted ground fault (87G or RGF)...........................................................................6 - 47
Thermal Overload (49)........................................................................................................6 - 52
Time overcurrent curves...................................................................................................6 - 56
Phase timed overcurrent (51P).......................................................................................6 - 60
Phase instantaneous overcurrent (50P).....................................................................6 - 63
Ground timed overcurrent (51G/SG)............................................................................6 - 65
Ground instantaneous overcurrent (50G/SG) .........................................................6 - 68

TOC-4 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Neutral timed overcurrent (51N)................................................................................... 6 - 71
Neutral instantaneous overcurrent (50N)................................................................. 6 - 74
Negative sequence timed overcurrent (51_2)........................................................ 6 - 76
Negative sequence instantaneous overcurrent (50_2)...................................... 6 - 79
S4 Controls.........................................................................................................................6 - 81
Change setpoint group ..................................................................................................... 6 - 81
Virtual inputs .......................................................................................................................... 6 - 82
Logic elements ...................................................................................................................... 6 - 83
Winding breaker failure ....................................................................................................6 - 92
Lockout (86)............................................................................................................................. 6 - 94
S5 Inputs/Outputs ..........................................................................................................6 - 96
Contact inputs....................................................................................................................... 6 - 96
Output relays ......................................................................................................................... 6 - 97
Output Relay 1 - W1 breaker "Trip" ............................................................................6 - 98
Output Relay 2 - W2 breaker "Trip" ............................................................................6 - 98
Auxiliary Output Relays 3 to 6 ......................................................................................6 - 100
Virtual inputs .......................................................................................................................... 6 - 101
Remote inputs ....................................................................................................................... 6 - 102
Remote outputs .................................................................................................................... 6 - 102
S6 Monitoring....................................................................................................................6 - 103
Demand.................................................................................................................................... 6 - 103
Current demand..................................................................................................................6 - 104
RTD temperature monitoring (49T) .............................................................................. 6 - 105
7. MAINTENANCE M1 Relay information ...................................................................................................7 - 2
M3 Breaker maintenance ...........................................................................................7 - 4
Trip coil...................................................................................................................................... 7 - 4
Breaker trip counter............................................................................................................7-8
Breaker health....................................................................................................................... 7 - 10
Reset counters ...................................................................................................................... 7 - 13
M4 Breaker monitor.......................................................................................................7 - 14
M5 Relay maintenance................................................................................................7 - 15
Ambient temperature ........................................................................................................ 7 - 15
M7 Testing..........................................................................................................................7 - 17
Force LEDs............................................................................................................................... 7 - 17
Force output relays.............................................................................................................7-18
General maintenance...................................................................................................7 - 19
In-service maintenance.................................................................................................... 7 - 19
Out-of-service maintenance .......................................................................................... 7 - 19
Unscheduled maintenance (system interruption)................................................ 7 - 19
A. APPENDIX Warranty ............................................................................................................................A - 1
Repairs.................................................................................................................................A - 2
Change Notes...................................................................................................................A - 3
Manual Revision history....................................................................................................A - 3

345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–1
345 Transformer Protection System
Chapter 1: Introduction
GE
Grid Solutions
Introduction
Overview
The 345 is a microprocessor-based relay for primary and backup protection of small to
medium size distribution transformers. The relay provides advanced algorithms for
automatic magnitude and phase compensation for more than twenty types of two-
winding transformers, good sensitivity for the detection of winding ground faults, and the
flexibility to set any of the phase, ground, neutral and negative sequence currents over-
current elements. The 345 relay has a small footprint and is withdrawable for easy
mounting into either new or retrofit installations. The combination of proven hardware,
advanced features, and communications, makes the relay superior for total transformer
metering, monitoring, protection and control. Equipped with serial (RS485), USB, and
Ethernet ports, as well as a wide selection of protocols such as Modbus, DNP3.0, IEC60870-
5-103, 60870-5-104, IEC 61850 GOOSE, the 345 relay is the best-in-class for either MCCs,
SCADA or inter-relay communications. The 345 provides excellent accessibility and
transparency with regard to power system conditions and events, through both its four-
line 20 character display, and the EnerVista SR3 Setup program. Conveniently located
LEDs indicate the relay status, pickup, operation, and alarm events, as well as the status of
each winding breaker.
The 345 relay provides the following key benefits:
• Withdrawable small footprint – saves on rewiring and space.
• Multiple protection groups with the flexibility to switch through a wide selection of
main and backup transformer protections and controls.
• Fast setup (Quick Setup) menu for power system configuration and protection.
• Large four-line LCD display, LEDs, and keypad
• Multiple communication protocols and simultaneous access with easy integration into
monitoring and control systems.

1–2 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION
Description of the 345 Transformer Protection
System
CPU
Relay functions are controlled by two processors: a Freescale MPC5554 32-bit
microprocessor measures all analog signals and digital inputs and controls all output
relays; a Freescale MPC520B 32-bit microprocessor controls all the Ethernet
communication protocols.
Analog Input and Waveform Capture
Magnetic transformers are used to scale-down the incoming analog signals from the
source instrument transformers. The analog signals are then passed through a 960 Hz low
pass anti-aliasing filter. All signals are then simultaneously captured by sample and hold
buffers to ensure there are no phase shifts. The signals are converted to digital values by a
12-bit A/D converter before finally being passed on to the CPU for analysis.
Both current and voltage are sampled thirty-two times per power frequency cycle. These
‘raw’ samples are scaled in software, then placed into the waveform capture buffer, thus
emulating a fault recorder. The waveforms can be retrieved from the relay via the
EnerVista 3 Series Setup software for display and diagnostics.
Phasors, Transients, and Harmonics
Current waveforms are processed four times every cycle with a DC Offset Filter and a
Discrete Fourier Transform (DFT). The resulting phasors have fault current transients and all
harmonics removed. This results in an overcurrent relay that is extremely secure and
reliable; one that will not overreach.
Processing of AC Current Inputs
The DC Offset Filter is an infinite impulse response (IIR) digital filter, which removes the DC
component from the asymmetrical current present at the moment a fault occurs. This is
done for all current signals used for overcurrent protection; voltage signals bypass the DC
Offset Filter. This filter ensures no overreach of the overcurrent protection.
The Discrete Fourier Transform (DFT) uses exactly one sample cycle to calculate a phasor
quantity which represents the signal at the fundamental frequency; all harmonic
components are removed. All subsequent calculations (e.g. RMS, power, etc.) are based
upon the current and voltage phasors, such that the resulting values have no harmonic
components.
Protection Elements
The protection elements are processed four times per power cycle. The protection
elements use RMS current, based on the magnitude of the phasor. Hence, protection is
impervious to both harmonics and DC transients.

CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–3
Figure 1-1: Functional block diagram
897743A2.CDR
345 RELAY
Metering
Transient Recorder
Event Recorder
Fault Report
Calculate
Restraint Current Calculate
Differential Currents
Calculate
Harmonics
2nd and 5th
BLOCK
50P
50G
/SG
50G
/SG
51P
51G
/SG
51G
/SG 50BF
51_2
50N
51N
87G
87G
87T
50/87
Winding 2
Winding 1
49
50_2
50P
51P
50BF
51_2
50N
51N
50_2
86
49T

1–4 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION
Table 1-1: ANSI device numbers and functions
Table 1-2: Other device functions
ANSI Code 61850 Logical Node Description
49 PTTR1 Thermal Overload
49T rtdGGIO6 Temperature Monitoring
50/87 insPDIF1 Instantaneous Differential
50_2 ngseqPIOC1,
ngseqPIOC2 Negative Sequence Instantaneous Overcurrent
50BF RBRF1, RBRF2 Breaker Failure
50G/SG gndPIOC1, gndPIOC2/
hsePIOC1, hsePIOC2 Ground/Sensitive Ground Instantaneous Overcurrent
50N ndPIOC1, ndPIOC2 Neutral Instantaneous Overcurrent
50P phsPIOC1, phsPIOC2 Phase Instantaneous Overcurrent
51_2 ngseqPTOC1,
ngseqPTOC2 Negative Sequence Timed Overcurrent
51G/SG gndPTOC1, gndPTOC2/
hsePTOC1, hsePTOC2 Ground/Sensitive Ground Timed Overcurrent
51N ndPTOC1, ndPTOC2 Neutral Timed Overcurrent
51P phsPTOC1, phsPTOC2 Phase Timed Overcurrent
86 - Lockout
87G (RGF)1
1.Restricted Ground Fault is sometimes coded as “87G”, "REF", "87RGF", "87N", "64R",
"64REF", etc.
rgfPDIF1, rgfPDIF2 Restricted Ground Fault
87T pcntPDIF1 Percent Differential
Description
2nd Harmonic Blocking
Ambient Temperature
Breaker Control
Breaker Maintenance
CT Failure Detection
Demand (in metering)
Digital Counters
DNP 3.0 Communications
Event Recorder
Fault Report
IEC 60870-5-103 Communications
IEC 60870-5-104 Communications
IEC 61850 Communications
IEC 61850 GOOSE Communications
Lockout (86)
Logic Elements
Metering: current, frequency, harmonics
Modbus User Map
Modbus RTU Communications
Modbus TCP Communications
Non-volatile Latches
Output Relays
Relay Maintenance

CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–5
The 345 relay has two identical setpoint groups, with the same set of protection elements.
By default setpoint group 1 will be active. Setpoint group 2 can be activated by
programming the conditions under S4 Control/Change Setpoint Group menu.
Depending on the relay order code, the type and number of protection elements per
setpoint group changes. The full set of protection elements will be available in the setpoint
group, if the “Advanced configuration (letter M) is selected in the order code. This includes
one Transformer Percent Differential element, one Instantaneous Differential element, two
Restricted Ground Fault elements, one Thermal Model, two Breaker Failure elements, two
of each Phase-, Ground-, and Neutral Instantaneous Overcurrent elements, two of each
Phase-, Ground-, Neutral Timed Overcurrent elements, and two Negative Sequence Timed
Overcurrent elements. Some of the protection elements are common for the transformer
protection: Percent and Instantaneous differential elements, Thermal Model, and others
are generic with programmable AC inputs from either winding currents: the Restricted
Ground Fault 1(2), the Phase-, Ground-, and Neutral IOC1(2), the Phase, Ground, and
Neutral TOC1(2), and the Negative Sequence TOC1(2) elements.
Figure 1-2: Main menu
Remote Inputs (32)
Setpoint Groups (2)
Test Mode
Transient Recorder (Oscillography)
Trip and Close Coil Monitoring
User Curves
User-programmable LEDs
Virtual Inputs (32)
Virtual Outputs (32)
Description

1–6 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
DESCRIPTION OF THE 345 TRANSFORMER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION
ACTUAL VALUES
COMMANDS
QUICK SETUP
SETPOINTS
MAINTENANCE
ACTUAL VALUES
A1 STATUS
A2 METERING
A3 RECORDS
A4 TARGET MESSAGES
ٕ
QUICK SETUP
RELAY STATUS
NOMINAL FREQUENCY
W1 PH CT PRIMARY
W1 PH CT SECONDARY
W1 GND CT PRIMARY
W1 GND CT SECONDARY
W2 PH CT PRIMARY
W2 PH CT SECONDARY
W2 GND CT PRIMARY
W2 GND CT SECONDARY
TRANSFORMER TYPE
XFMR RATED LOAD
W1 NOM VOLTAGE
W1 GROUNDING
W2 NOM VOLTAGE
W2 GROUNDING
XFMR PERCENT DIFF
PH TOC1 FUNCTION
GND TOC1 FUNCTION
PH IOC1 FUNCTION
GND IOC1 FUNCTION
ٕ
SETPOINTS
S1 RELAY SETUP
S2 SYSTEM SETUP
S3 PROTECTION
S4 CONTROLS
S5 INPUTS/OUTPUTS
S6 MONITORING
ٕ
MAINTENANCE
M1 RELAY INFO
M3 BKR MAINTENANCE
M4 BKR MONITOR
M5 RELAY MAINT
M6 FACTORY SERVICE
M7 TESTING
ٕ
897756A3.cdr

CHAPTER 1: INTRODUCTION 345 ORDER CODES
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–7
345 order codes
The information to specify a 345 relay is provided in the following Order Code figure.
Figure 1-3: Order Codes
NOTE
NOTE: Features related to each order number are subject to change without notice.
897800A6.PDF
345  * * * * E * N N * * * *
Interface 345 |||| | |||| 345 Transformer Protection Relay
User
Interface
E| | | | | | | | English without programmable LEDs
L| | | | | | | | English with programmable LEDs
Phase Currentsa
a Phase current option P0 and Ground current option G0 is only available on the non-drawout version
(Case Design option N)
P0 | | | | | | | 1 A and 5 A configurable phase current inputs
P1 | | | | | | | 1 A 3-phase CTs (Winding 1 - 1 A, Winding 2 - 1 A)
P5 | | | | | | | 5 A 3-phase CTs (Winding 1 - 5 A, Winding 2 - 5 A)
Ground Currentsb
b Ground current options G0/G1/G5 and S0/S1/S5 must match the corresponding P0/P1/P5 Phase currents
The selected phase and ground CTs apply to both windings.
G0 | | | | | | 1 A and 5 A configurable ground current input
G1 | | | | | | 1 A standard ground CTs (Winding 1 - 1 A, Winding 2 - 1 A)
G5 | | | | | | 5 A standard ground CTs (Winding 1 - 5 A, Winding 2 - 5 A)
S0 | | | | | | 1 A and 5 A configurable sensitive ground current input
S1 | | | | | | 1 A sensitive ground CTs (Winding 1 - 1 A, Winding 2 - 1 A)
S5 | | | | | | 5 A sensitive ground CTs (Winding 1 - 5 A, Winding 2 - 5 A)
Power Supply L | | | | | 24 to 48 V DC
H| ||||110 to 250 V DC/110 to 230 V AC
Current Protectionc
c Current protection option E has been discontinued.
S|
|| || || |Standard: 87T, 87T-50, 51P(1), 51N(1), 51G(1), 50P(1), 50G(1), 50N(1), 49P, 46 (51_2/50_2), 86
M|
|| || || |Advanced: 87T, 87T-50, 51P(2), 51N(2), 51G(2), 50P(2), 50G(2), 50N(2), 49P, 46 (51_2/50_2)(2), 86, 50BF(2), 87G/RGF(2)
Communications S N |
|| |Standard: Front USB, Rear RS485: Modbus RTU, DNP3.0, IEC60870-5-103
1E |
|| |Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104
2E |
|| |Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104, IEC 61850 GOOSE
3E |
|| |Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104, IEC 61850
Case Design D | Protection Relay with drawout design
N | Protection Relay with non-drawout design
X | Protection Relay (drawout design) with no chassis
Harsh Environment N None
HHarsh Environment Conformal Coating

1–8 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
345 ORDER CODES CHAPTER 1: INTRODUCTION
Empty chassis
The 345 protection relay chassis used with a drawout relay is available separately, for use
as a partial replacement or in test environments. Many features are supported by the
cards and ports within the chassis, as is reflected in the chassis order code.
NOTE
NOTE: The chassis order code and drawout relay order code must match exactly.
FASTPATH: A drawout relay cannot be used in a chassis with different order code options.
Figure 1-4: 350 chassis order codes
Remote Module I/O
The remote RTD Module provides additional protection by monitoring the temperature of
key components in the equipment.
Accessories
• 18L0-0075 3 Series Depth reducing collar - 1.375”
• 18L0-0076 3 Series Depth reducing collar - 3.00”
• 18L0-0080 3 Series IP20 Kit
• 3S-NDO-STCONKIT 3 Series NDO straight terminal block kit
• 0804-0458 USB A-B configuration cable - 6’
897800CH-A1.PDF
345  CH  * * * N N * * *
Phase Currents P1 | | | | 1 A 3-phase CTs (Winding 1 - 1 A, Winding 2 - 1 A)
P5 | | | | 5 A 3-phase CTs (Winding 1 - 5 A, Winding 2 - 5 A)
Ground Currentsa
a Ground current options G1/G5 must match the corresponding P1/P5 Phase currents
G1 | | | 1 A standard ground CTs (Winding 1 - 1 A, Winding 2 - 1 A)
G5 | | | 5 A standard ground CTs (Winding 1 - 5 A, Winding 2 - 5 A)
S1 | | | 1 A sensitive ground CTs (Winding 1 - 1 A, Winding 2 - 1 A)
S5 | | | 5 A sensitive ground CTs (Winding 1 - 5 A, Winding 2 - 5 A)
Communications S N |
|Standard: Front USB, Rear RS485: Modbus RTU, DNP3.0, IEC60870-5-103
1E |
|Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104
2E |
|Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104, IEC 61850 GOOSE
3E |
|Standard + Ethernet (Copper & Fiber - MTRJ), Modbus TCP/IP, DNP3.0, IEC 60870-5-104, IEC 61850
Harsh Environment NNone
HHarsh Environment Conformal Coating
897800RMIO-A1.fm
RMIO  * G G * *
Power Supply L | | | | 24 - 48 V DC
H | | | | 110 - 250 V DC / 110 - 230 V AC
I/O Module 1 G | | | Remote Module I/O (3 - 100 Ohm Platinum RTDs)
I/O Module 2 G | | Remote Module I/O (3 - 100 Ohm Platinum RTDs)
I/O Module 3 G | Remote Module I/O (3 - 100 Ohm Platinum RTDs)
X| None
I/O Module 4 G Remote Module I/O (3 - 100 Ohm Platinum RTDs)
XNone

CHAPTER 1: INTRODUCTION SPECIFICATIONS
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–9
NOTE
NOTE: Refer to the 3 Series Retrofit Instruction Manual for the retrofit of Multilin MI, MII, MLJ, and
TOV relays.
Specifications
NOTE
NOTE: Specifications are subject to change without notice.
NOTE
NOTE: All accuracies defined below are at nominal frequency (50Hz or 60Hz) unless otherwise
stated.
NOTE
NOTE: To obtain the element operating time delay, i.e. from fault injection until operation, add the
operate time to the curve time.
To obtain the total element operating time, i.e. from the presence of a trip condition to
initiation of a trip, add 8 ms output relay time to the operate times listed below.
Password security
PASSWORD SECURITY
Master Password: ...............................................8 to 10 alpha-numeric characters
Settings Password:.............................................3 to 10 alpha-numeric characters for local and remote
access
Control Password:...............................................3 to 10 alpha-numeric characters for local and remote
access
Protection
PHASE/NEUTRAL/GROUND/NEGATIVE SEQUENCE TIMED OVERCURRENT (51P/51N/51G/
51_2)
Pickup Level:.......................................................... 0.05 to 20.00 x CT in steps of 0.01 x CT
Dropout Level: ...................................................... 97% of Pickup @ I > 1 x CT
Pickup - 0.02 x CT @ I < 1 x CT
Curve Shape:......................................................... ANSI Extremely/Very/Moderately/Normally Inverse
Definite Time (0.1 s base curve)
IEC Curve A/B/C and Short Inverse
IAC Extremely/Very/-/Short Inverse
Curve Multiplier:................................................... 0.05 to 50.00 in steps of 0.01
Reset Time: ............................................................ Instantaneous, Linear
Curve Timing Accuracy: .................................. ±3% of expected inverse time or 1 cycle, whichever is
greater, from pickup to operate
Level Accuracy:.................................................... per CT input

1–10 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
SENSITIVE GROUND TIMED OVERCURRENT (51SG)
Pickup Level: ......................................................... 0.005 to 3.000 x CT in steps of 0.001 x CT
Dropout Level:...................................................... 97% of Pickup @ I > 0.1 x CT
Pickup - 0.002 x CT @ I < 0.1 x CT
Curve Shape:......................................................... ANSI Extremely/Very/Moderately/Normally Inverse
Definite Time
IEC Curve A/B/C/Short
IAC Extremely/Very/-/Short Inverse
Curve Multiplier: .................................................. 0.05 to 50.00 in steps of 0.1
Reset Time: ............................................................ Instantaneous, Linear
Curve Timing Accuracy:.................................. ±3% of expected inverse time or 1 cycle, whichever is
greater, from pickup to operate
Level Accuracy: ................................................... per CT input
PHASE/NEUTRAL/GROUND/NEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT
(50P/50N/50G/50_2)
Pickup Level: ......................................................... 0.05 to 20.00 x CT in steps of 0.01 x CT
Dropout Level:...................................................... 97% of Pickup @ I > 1 x CT
Pickup - 0.02 x CT @ I <1 x CT
Time Delay: ........................................................... 0.00 to 300.00 sec in steps of 0.01
Operate Time: ...................................................... <30 ms @ 60Hz (I > 2.0 x PKP, No time delay)
<35 ms @ 50Hz (I > 2.0 x PKP, No time delay)
Time Delay Accuracy:...................................... 1% or 1 cycle, whichever is greater (Time Delay selected)
Level Accuracy: ................................................... per CT input
SENSITIVE GROUND INSTANTANEOUS OVERCURRENT (50SG)
Pickup Level (Gnd IOC):..................................... 0.005 to 3.000 x CT in steps of 0.001 x CT
Dropout Level:...................................................... 97% of Pickup @ I > 0.1 x CT
Pickup - 0.002 x CT @ I < 0.1 x CT
Time Delay: ........................................................... 0.00 to 300.00 sec in steps of 0.01
Operate Time: ...................................................... <30 ms @ 60Hz (I > 2.0 x PKP, No time delay)
<35 ms @ 50Hz (I > 2.0 x PKP, No time delay)
Time Delay Accuracy:...................................... 1% or 1 cycle, whichever is greater (Time Delay selected)
Level Accuracy: ................................................... per CT input
TRANSFORMER THERMAL PROTECTION (49)
Current:.................................................................... RMS current - max (Ia, Ib, Ic)
Pickup Accuracy: ................................................ per current inputs
Timing Accuracy:................................................ ±3% of expected time, or 30 ms (whichever is greater)
@ I > 1.5 x PKP
TRANSFORMER PERCENT DIFFERENTIAL PROTECTION (87T)
Differential/Restraint Characteristic:......... Dual Slope, Dual Breakpoint
Minimum Pickup Level: .................................... 0.05 to 1.00 x CT in steps of 0.01
Slope 1 Range: ..................................................... 15 to 100% in steps of 1%
Slope 2 Range: ..................................................... 50 to 100% in steps of 1%
Kneepoint 1:.......................................................... 0.50 to 4.00 x CT in steps of 0.01
Kneepoint 2:.......................................................... 1.00 to 10.00 x CT in steps of 0.01
2nd Harmonic Inhibit Level:............................ 1.0 to 40.0% insteps of 0.1%
2nd Harmonic Inhibit Mode:........................... Per-phase, 2-out-of-3, Average, 1-out-of-3
5th Harmonic Inhibit Level:............................. 1.0 to 40.0% insteps of 0.1%
Dropout Level:...................................................... 95% of Pickup
Operate Time: ...................................................... < 20 ms (no harmonics inhibits selected)
< 30 ms (harmonics inhibits selected)
Level Accuracy: ................................................... per current inputs
TRANSFORMER INSTANTANEOUS DIFFERENTIAL PROTECTION (50/87)
Pickup Level: ......................................................... 3.00 to 20.00xCT in steps of 0.01xCT
Dropout Level:...................................................... 95% of Pickup
Operate Time: ...................................................... <30 ms
Level Accuracy: ................................................... per current inputs

CHAPTER 1: INTRODUCTION SPECIFICATIONS
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–11
RESTRICTED GROUND FAULT
Number of Elements: ........................................ 2
Pickup Level:.......................................................... 0.02 to 20.00 xCT in steps of 0.01
0.002 to 2.000 xCT (with sensitive CTs)
GND Supervision Level:.................................... 0.02 to 20.00 xCT in steps of 0.01
0.002 to 2.000 xCT (with sensitive CTs)
Dropout Level: ...................................................... 97% of Pickup
Slope Range: ......................................................... 0 to 100% in steps of 1
Pickup Delay: ........................................................ 0.00 to 600.0 s in steps of 0.01
Operate Time:....................................................... < 30 ms @ 0 ms time delay
Level Accuracy:.................................................... per current inputs
Metering
PHASE & GROUND CURRENT INPUTS
CT Primary: ............................................................1 to 6000 A
Range: ......................................................................0.02 to 20 × CT
Input type:..............................................................1 A or 5 A (must be specified with order P1G1 or P5G5)
Configurable 1 A or 5 A (must be specified with order P0G0)
Nominal frequency:...........................................50/60 Hz
Burden: ....................................................................<0.1 VA at rated load
Accuracy at nominal frequency:.................3%
±10 mA or ±20% of reading from 0.02 to 0.19 × CT, whichever
is greater
CT withstand: ........................................................1 second at 100 A (1 A option)
1 second at 400 A (5 A or universal CT option)
2 seconds at 40 × rated current
continuous at 3 × rated current
SENSITIVE GROUND CURRENT INPUT
CT Primary: ............................................................1 to 600 A
Range: ......................................................................0.002 to 3 × CT
Input type:..............................................................1 A or 5 A (must be specified with order P1S1 or P5S5)
Configurable 1 A or 5 A (must be specified with order P0S0)
Nominal frequency:...........................................50/60 Hz
Burden: ....................................................................<0.1 VA at rated load
Accuracy at nominal frequency:.................3%
±10 mA or ±20% of reading from 0.02 to 0.19 × CT, whichever
is greater
CT withstand: ........................................................1 second at 100 A (1 A option)
1 second at 400 A (5 A or universal CT option)
2 seconds at 40 × rated current
continuous at 3 × rated current

1–12 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
Data capture
TRANSIENT RECORDER
Buffer size: .............................................................3 s
No. of buffers:.......................................................1, 3, 6
No. of channels:...................................................14
Sampling rate:......................................................4, 8, 16, or 32 samples per cycle
Triggers: ..................................................................Manual Command
Contact Input
Virtual Input
Logic Element
Element Pickup/Trip/Dropout/Alarm
Data: .........................................................................AC input channels
Contact input state
Contact output state
Virtual input state
Logic element state
Data storage:........................................................RAM - battery backed-up
FAULT RECORDER
Number of records:............................................ 1
Content:...................................................................Date and Time, first cause of fault, phases,
Currents: Ia, Ib, Ib, Ig/Isg, In - magnitudes and angles
Voltages: Van, Vbn, Vcn, Vab, Vbc, Vca, Vaux - magnitudes
and angles
System frequency
EVENT RECORDER
Number of events:..............................................256
Header:....................................................................relay name, order code, firmware revision
Content:...................................................................event number, date of event, cause of event,per-phase
current, ground current, sensitive ground current, neutral
current, ground differential current, negative sequence
current, restraint current, per-phase differential current, per-
phase differential second harmonic current, thermal
capacity
Data Storage:........................................................RAM - battery backed up; retained for 3 days
CLOCK
Setup: .......................................................................Date and time
Daylight Saving Time
IRIG-B: ......................................................................Auto-detect (DC shift or Amplitude Modulated)
Amplitude modulated: 1 to 10 V pk-pk
DC shift: 1 to 10 V DC
Input impedance: 40 kOhm ± 10%
Accuracy with IRIG-B:....................................... ± 1 ms
Accuracy without IRIG-B:................................± 1 min / month
Control
LOGIC ELEMENTS
Number of logic elements:.............................16
Trigger source inputs per element:............2 to 8
Block inputs per element: ...............................2 to 4
Supported operations: .....................................AND, OR, NOR, NAND, XOR, XNOR, Pickup / Dropout timers
Pickup timer: .........................................................0 to 60000 ms in steps of 1 ms
Dropout timer:......................................................0 to 60000 ms in steps of 1 ms