GE T35 User manual

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GE Industrial Systems
828742A1.CDR
T35 Transformer Management Relay
UR Series Instruction Manual
T35 Revision: 4.0x
Manual P/N: 1601-0114-G1 (GEK-106489)
Copyright © 2004 GE Multilin
GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: [phone] Fax: [phone]
Internet: http://www.GEindustrial.com/multilin Manufactured under an
ISO9000 Registered system.
Title Page
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GE Industrial Systems
ADDENDUM
This Addendum contains information that relates to the T35 Transformer Management Relay relay, version 4.0x. This
addendum lists a number of information items that appear in the instruction manual GEK-106489 (revision G1) but are
not included in the current T35 operations.
The following functions/items are not yet available with the current version of the T35 relay:
N/AThe version 4.0 release of the T35 relay includes new hardware (CPU and CT/VT modules).
• The new CPU modules are specified with the following order codes: 9E, 9G, and 9H.
• The new CT/VT modules are specified with the following order codes: 8F, 8G, 8H, 8J, and 8K.
The following table maps the relationship between the old CPU and CT/VT modules to the newer versions:
The new CT/VT modules (8F, 8G, 8H, 8J, and 8K) can only be used with the new CPUs (9E, 9G, 9H), and the old CT/VT
modules (8A, 8B, 8C, 8D) can only be used with the old CPU modules (9A, 9C, 9D). To prevent any hardware mis-
matches, the new CPU and CT/VT modules have blue labels and a warning sticker stating “Attn.: Ensure CPU and
DSP module label colors are the same!”. In the event that there is a mismatch between the CPU and CT/VT module,
the relay will not function and a DSP ERROR or HARDWARE MISMATCH error will be displayed.
All other input/output modules are compatible with the new hardware.
With respect to the firmware, firmware version 4.0x is only compatible with the new CPU and CT/VT modules. Previous
versions of the firmware (3.4x and earlier) are only compatible with the older CPU and CT/VT modules.
The UCA2 specifications are not yet finalized. There will be changes to the object models described in
Appendix C: UCA/MMS Protocol.
MODULE OLD NEW DESCRIPTION
CPU 9A 9E RS485 and RS485 (Modbus RTU, DNP)
9B 9G RS485 and 10Base-F (MMS/UCA2, Modbus TCP/IP, DNP)
9C 9H RS485 and Redundant 10Base-F (MMS/UCA2, Modbus TCP/IP, DNP)
CT/VT 8A 8F Standard 4CT/4VT
8B 8G Sensitive Ground 4CT/4VT
8C 8H Standard 8CT
8D 8J Sensitive Ground 8CT/8VT
8E 8K Standard 7CT/1VT
NOTE
Addendum

GE Multilin T35 Transformer Management Relay v
TABLE OF CONTENTS
1. GETTING STARTED 1.1 IMPORTANT PROCEDURES
1.1.1 CAUTIONS AND WARNINGS ........................................................................... 1-1
1.1.2 INSPECTION CHECKLIST ................................................................................ 1-1
1.2 UR OVERVIEW
1.2.1 INTRODUCTION TO THE UR ........................................................................... 1-2
1.2.2 HARDWARE ARCHITECTURE ......................................................................... 1-3
1.2.3 SOFTWARE ARCHITECTURE.......................................................................... 1-4
1.2.4 IMPORTANT CONCEPTS ................................................................................. 1-4
1.3 ENERVISTA URPC SETUP SOFTWARE
1.3.1 PC REQUIREMENTS ........................................................................................ 1-5
1.3.2 INSTALLATION.................................................................................................. 1-5
1.3.3 CONNECTING ENERVISTA URPC SETUP WITH THE T35 ............................ 1-8
1.4 UR HARDWARE
1.4.1 MOUNTING AND WIRING............................................................................... 1-11
1.4.2 COMMUNICATIONS........................................................................................ 1-11
1.4.3 FACEPLATE DISPLAY .................................................................................... 1-11
1.5 USING THE RELAY
1.5.1 FACEPLATE KEYPAD..................................................................................... 1-12
1.5.2 MENU NAVIGATION ....................................................................................... 1-12
1.5.3 MENU HIERARCHY ........................................................................................ 1-12
1.5.4 RELAY ACTIVATION....................................................................................... 1-13
1.5.5 RELAY PASSWORDS ..................................................................................... 1-13
1.5.6 FLEXLOGIC™ CUSTOMIZATION................................................................... 1-13
1.5.7 COMMISSIONING ........................................................................................... 1-13
2. PRODUCT DESCRIPTION 2.1 INTRODUCTION
2.1.1 OVERVIEW........................................................................................................ 2-1
2.1.2 ORDERING........................................................................................................ 2-3
2.2 SPECIFICATIONS
2.2.1 PROTECTION ELEMENTS ............................................................................... 2-5
2.2.2 USER-PROGRAMMABLE ELEMENTS............................................................. 2-6
2.2.3 MONITORING.................................................................................................... 2-7
2.2.4 METERING ........................................................................................................ 2-7
2.2.5 INPUTS .............................................................................................................. 2-8
2.2.6 POWER SUPPLY .............................................................................................. 2-8
2.2.7 OUTPUTS .......................................................................................................... 2-9
2.2.8 COMMUNICATIONS........................................................................................ 2-10
2.2.9 INTER-RELAY COMMUNICATIONS ............................................................... 2-10
2.2.10 ENVIRONMENTAL .......................................................................................... 2-11
2.2.11 TYPE TESTS ................................................................................................... 2-11
2.2.12 PRODUCTION TESTS .................................................................................... 2-11
2.2.13 APPROVALS ................................................................................................... 2-11
2.2.14 MAINTENANCE ............................................................................................... 2-11
3. HARDWARE 3.1 DESCRIPTION
3.1.1 PANEL CUTOUT ............................................................................................... 3-1
3.1.2 MODULE WITHDRAWAL AND INSERTION ..................................................... 3-2
3.1.3 REAR TERMINAL LAYOUT............................................................................... 3-3
3.2 WIRING
3.2.1 TYPICAL WIRING.............................................................................................. 3-4
3.2.2 DIELECTRIC STRENGTH ................................................................................. 3-5
3.2.3 CONTROL POWER ........................................................................................... 3-6
3.2.4 CT/VT MODULES .............................................................................................. 3-6
3.2.5 CONTACT INPUTS/OUTPUTS ......................................................................... 3-8
3.2.6 TRANSDUCER INPUTS/OUTPUTS................................................................ 3-14
3.2.7 RS232 FACEPLATE PORT ............................................................................. 3-15
3.2.8 CPU COMMUNICATIONS PORTS.................................................................. 3-16
3.2.9 IRIG-B .............................................................................................................. 3-18
Table of Contents

vi T35 Transformer Management Relay GE Multilin
TABLE OF CONTENTS
3.3 DIRECT I/O COMMUNICATIONS
3.3.1 DESCRIPTION .................................................................................................3-19
3.3.2 FIBER: LED AND ELED TRANSMITTERS ......................................................3-21
3.3.3 FIBER-LASER TRANSMITTERS .....................................................................3-21
3.3.4 G.703 INTERFACE...........................................................................................3-22
3.3.5 RS422 INTERFACE .........................................................................................3-24
3.3.6 RS422 AND FIBER INTERFACE .....................................................................3-27
3.3.7 G.703 AND FIBER INTERFACE ......................................................................3-27
3.3.8 IEEE C37.94 INTERFACE................................................................................3-28
4. HUMAN INTERFACES 4.1 ENERVISTA URPC SETUP SOFTWARE INTERFACE
4.1.1 INTRODUCTION ................................................................................................4-1
4.1.2 CREATING A SITE LIST ....................................................................................4-1
4.1.3 ENERVISTA URPC SETUP OVERVIEW...........................................................4-1
4.1.4 ENERVISTA URPC SETUP MAIN WINDOW.....................................................4-3
4.2 FACEPLATE INTERFACE
4.2.1 FACEPLATE .......................................................................................................4-4
4.2.2 LED INDICATORS..............................................................................................4-4
4.2.3 DISPLAY.............................................................................................................4-7
4.2.4 KEYPAD .............................................................................................................4-7
4.2.5 MENUS...............................................................................................................4-7
4.2.6 CHANGING SETTINGS .....................................................................................4-9
5. SETTINGS 5.1 OVERVIEW
5.1.1 SETTINGS MAIN MENU ....................................................................................5-1
5.1.2 INTRODUCTION TO ELEMENTS......................................................................5-3
5.1.3 INTRODUCTION TO AC SOURCES..................................................................5-4
5.2 PRODUCT SETUP
5.2.1 PASSWORD SECURITY....................................................................................5-7
5.2.2 DISPLAY PROPERTIES ....................................................................................5-8
5.2.3 CLEAR RELAY RECORDS ..............................................................................5-10
5.2.4 COMMUNICATIONS ........................................................................................5-11
5.2.5 MODBUS USER MAP ......................................................................................5-19
5.2.6 REAL TIME CLOCK .........................................................................................5-19
5.2.7 USER-PROGRAMMABLE FAULT REPORT....................................................5-19
5.2.8 OSCILLOGRAPHY ...........................................................................................5-20
5.2.9 DATA LOGGER................................................................................................5-22
5.2.10 USER-PROGRAMMABLE LEDS .....................................................................5-23
5.2.11 USER-PROGRAMMABLE SELF TESTS .........................................................5-26
5.2.12 CONTROL PUSHBUTTONS ............................................................................5-26
5.2.13 USER-PROGRAMMABLE PUSHBUTTONS....................................................5-28
5.2.14 FLEX STATE PARAMETERS ..........................................................................5-29
5.2.15 USER-DEFINABLE DISPLAYS ........................................................................5-30
5.2.16 DIRECT INPUTS/OUTPUTS ............................................................................5-32
5.2.17 INSTALLATION ................................................................................................5-37
5.3 SYSTEM SETUP
5.3.1 AC INPUTS.......................................................................................................5-38
5.3.2 POWER SYSTEM ............................................................................................5-40
5.3.3 SIGNAL SOURCES..........................................................................................5-41
5.3.4 TRANSFORMER ..............................................................................................5-43
5.3.5 FLEXCURVES™ ..............................................................................................5-53
5.4 FLEXLOGIC™
5.4.1 INTRODUCTION TO FLEXLOGIC™................................................................5-60
5.4.2 FLEXLOGIC™ RULES .....................................................................................5-65
5.4.3 FLEXLOGIC™ EVALUATION ..........................................................................5-65
5.4.4 FLEXLOGIC™ EXAMPLE ................................................................................5-66
5.4.5 FLEXLOGIC™ EQUATION EDITOR................................................................5-70
5.4.6 FLEXLOGIC™ TIMERS ...................................................................................5-70
5.4.7 FLEXELEMENTS™ ..........................................................................................5-71
5.4.8 NON-VOLATILE LATCHES ..............................................................................5-75

GE Multilin T35 Transformer Management Relay vii
TABLE OF CONTENTS
5.5 GROUPED ELEMENTS
5.5.1 OVERVIEW...................................................................................................... 5-76
5.5.2 SETTING GROUP ........................................................................................... 5-76
5.5.3 TRANSFORMER ELEMENTS ......................................................................... 5-76
5.5.4 PHASE CURRENT .......................................................................................... 5-82
5.6 CONTROL ELEMENTS
5.6.1 OVERVIEW...................................................................................................... 5-89
5.6.2 SETTING GROUPS ......................................................................................... 5-89
5.6.3 SELECTOR SWITCH....................................................................................... 5-90
5.7 INPUTS/OUTPUTS
5.7.1 CONTACT INPUTS.......................................................................................... 5-95
5.7.2 VIRTUAL INPUTS............................................................................................ 5-97
5.7.3 CONTACT OUTPUTS...................................................................................... 5-98
5.7.4 LATCHING OUTPUTS..................................................................................... 5-98
5.7.5 VIRTUAL OUTPUTS ...................................................................................... 5-100
5.7.6 REMOTE DEVICES ....................................................................................... 5-101
5.7.7 REMOTE INPUTS.......................................................................................... 5-102
5.7.8 REMOTE OUTPUTS...................................................................................... 5-103
5.7.9 RESETTING................................................................................................... 5-104
5.7.10 DIRECT INPUTS/OUTPUTS ......................................................................... 5-104
5.8 TRANSDUCER I/O
5.8.1 DCMA INPUTS .............................................................................................. 5-108
5.8.2 RTD INPUTS.................................................................................................. 5-109
5.8.3 DCMA OUTPUTS .......................................................................................... 5-109
5.9 TESTING
5.9.1 TEST MODE .................................................................................................. 5-113
5.9.2 FORCE CONTACT INPUTS .......................................................................... 5-113
5.9.3 FORCE CONTACT OUTPUTS ...................................................................... 5-114
6. ACTUAL VALUES 6.1 OVERVIEW
6.1.1 ACTUAL VALUES MAIN MENU ........................................................................ 6-1
6.2 STATUS
6.2.1 CONTACT INPUTS............................................................................................ 6-3
6.2.2 VIRTUAL INPUTS.............................................................................................. 6-3
6.2.3 REMOTE INPUTS.............................................................................................. 6-3
6.2.4 CONTACT OUTPUTS........................................................................................ 6-4
6.2.5 VIRTUAL OUTPUTS .......................................................................................... 6-4
6.2.6 REMOTE DEVICES ........................................................................................... 6-4
6.2.7 SELECTOR SWITCHES.................................................................................... 6-5
6.2.8 FLEX STATES ................................................................................................... 6-5
6.2.9 ETHERNET........................................................................................................ 6-5
6.2.10 DIRECT INPUTS................................................................................................ 6-6
6.2.11 DIRECT DEVICES STATUS.............................................................................. 6-6
6.2.12 EGD PROTOCOL STATUS ............................................................................... 6-7
6.3 METERING
6.3.1 METERING CONVENTIONS ............................................................................. 6-8
6.3.2 TRANSFORMER DIFFERENTIAL AND RESTRAINT..................................... 6-11
6.3.3 SOURCES ....................................................................................................... 6-11
6.3.4 TRACKING FREQUENCY ............................................................................... 6-14
6.3.5 FLEXELEMENTS™ ......................................................................................... 6-14
6.3.6 TRANSDUCER I/O .......................................................................................... 6-15
6.4 RECORDS
6.4.1 USER-PROGRAMMABLE FAULT REPORTS ................................................ 6-16
6.4.2 EVENT RECORDS .......................................................................................... 6-16
6.4.3 OSCILLOGRAPHY .......................................................................................... 6-16
6.4.4 DATA LOGGER ............................................................................................... 6-17
6.5 PRODUCT INFORMATION
6.5.1 MODEL INFORMATION .................................................................................. 6-18
6.5.2 FIRMWARE REVISIONS ................................................................................. 6-18

viii T35 Transformer Management Relay GE Multilin
TABLE OF CONTENTS
7. COMMANDS AND
TARGETS
7.1 COMMANDS
7.1.1 COMMANDS MENU...........................................................................................7-1
7.1.2 VIRTUAL INPUTS ..............................................................................................7-1
7.1.3 CLEAR RECORDS.............................................................................................7-2
7.1.4 SET DATE AND TIME ........................................................................................7-2
7.1.5 RELAY MAINTENANCE.....................................................................................7-2
7.2 TARGETS
7.2.1 TARGETS MENU ...............................................................................................7-3
7.2.2 TARGET MESSAGES ........................................................................................7-3
7.2.3 RELAY SELF-TESTS .........................................................................................7-3
8. COMMISSIONING 8.1 DIFFERENTIAL CHARACTERISTIC TEST
8.1.1 DESCRIPTION ...................................................................................................8-1
8.2 DIFFERENTIAL CHARACTERISTIC TEST EXAMPLES
8.2.1 INTRODUCTION ................................................................................................8-3
8.2.2 TEST EXAMPLE 1..............................................................................................8-4
8.2.3 TEST EXAMPLE 2..............................................................................................8-9
8.2.4 TEST EXAMPLE 3............................................................................................8-10
8.2.5 TEST EXAMPLE 4............................................................................................8-11
8.3 INRUSH INHIBIT TEST
8.3.1 INRUSH INHIBIT TEST PROCEDURE ............................................................8-12
8.4 OVEREXCITATION INHIBIT TEST
8.4.1 OVEREXCITATION INHIBIT TEST PROCEDURE ..........................................8-13
8.5 COMMISSIONING TEST TABLES
8.5.1 DIFFERENTIAL RESTRAINT TESTS ..............................................................8-14
8.5.2 INRUSH INHIBIT TESTS..................................................................................8-14
8.5.3 OVEREXCITATION INHIBIT TESTS................................................................8-15
A. FLEXANALOG
PARAMETERS
A.1 FLEXANALOG LIST
B. MODBUS
COMMUNICATIONS
B.1 MODBUS RTU PROTOCOL
B.1.1 INTRODUCTION ............................................................................................... B-1
B.1.2 PHYSICAL LAYER ............................................................................................ B-1
B.1.3 DATA LINK LAYER ........................................................................................... B-1
B.1.4 CRC-16 ALGORITHM ....................................................................................... B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ................................................................... B-3
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ........... B-3
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H)........................................... B-4
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H)....................................... B-4
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................ B-5
B.2.6 EXCEPTION RESPONSES............................................................................... B-5
B.3 FILE TRANSFERS
B.3.1 OBTAINING UR FILES VIA MODBUS .............................................................. B-6
B.3.2 MODBUS PASSWORD OPERATION............................................................... B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP ................................................................................. B-8
B.4.2 DATA FORMATS............................................................................................. B-36

GE Multilin T35 Transformer Management Relay ix
TABLE OF CONTENTS
C. UCA/MMS
COMMUNICATIONS
C.1 UCA/MMS PROTOCOL
C.1.1 UCA....................................................................................................................C-1
C.1.2 MMS...................................................................................................................C-1
C.1.3 UCA REPORTING .............................................................................................C-6
D. IEC 60870-5-104
COMMUNICATIONS
D.1 IEC 60870-5-104 PROTOCOL
D.1.1 INTEROPERABILITY.........................................................................................D-1
D.1.2 POINT LIST......................................................................................................D-10
E. DNP COMMUNICATIONS E.1 DNP PROTOCOL
E.1.1 DEVICE PROFILE DOCUMENT........................................................................E-1
E.1.2 IMPLEMENTATION TABLE...............................................................................E-4
E.2 DNP POINT LISTS
E.2.1 BINARY INPUTS................................................................................................E-8
E.2.2 BINARY AND CONTROL RELAY OUTPUTS..................................................E-13
E.2.3 COUNTERS .....................................................................................................E-14
E.2.4 ANALOG INPUTS ............................................................................................E-15
F. MISCELLANEOUS F.1 CHANGE NOTES
F.1.1 REVISION HISTORY ......................................................................................... F-1
F.1.2 CHANGES TO THE T35 MANUAL .................................................................... F-1
F.2 ABBREVIATIONS
F.2.1 STANDARD ABBREVIATIONS ......................................................................... F-4
F.3 WARRANTY
F.3.1 GE MULTILIN WARRANTY ............................................................................... F-6

x T35 Transformer Management Relay GE Multilin
TABLE OF CONTENTS

GE Multilin T35 Transformer Management Relay 1-1
1 GETTING STARTED 1.1 IMPORTANT PROCEDURES
1
1 GETTING STARTED 1.1IMPORTANT PROCEDURES
Please read this chapter to help guide you through the initial setup of your new relay.
1.1.1 CAUTIONS AND WARNINGS
Before attempting to install or use the relay, it is imperative that all WARNINGS and CAU-
TIONS in this manual are reviewed to help prevent personal injury, equipment damage, and/
or downtime.
1.1.2 INSPECTION CHECKLIST
• Open the relay packaging and inspect the unit for physical damage.
• View the rear nameplate and verify that the correct model has been ordered.
Figure 1–1: REAR NAMEPLATE (EXAMPLE)
• Ensure that the following items are included:
• Instruction Manual
• GE enerVista CD (includes the enerVista URPC Setup software and manuals in PDF format)
• mounting screws
• registration card (attached as the last page of the manual)
• Fill out the registration form and return to GE Multilin (include the serial number located on the rear nameplate).
• For product information, instruction manual updates, and the latest software updates, please visit the GE Multilin web-
site at http://www.GEindustrial.com/multilin.
If there is any noticeable physical damage, or any of the contents listed are missing, please contact GE
Multilin immediately.
GE MULTILIN CONTACT INFORMATION AND CALL CENTER FOR PRODUCT SUPPORT:
GE Multilin
215 Anderson Avenue
Markham, Ontario
Canada L6E 1B3
TELEPHONE: [phone] (North America only)
FAX: [phone]
E-MAIL: [email protected]
HOME PAGE:http://www.GEindustrial.com/multilin
WARNING CAUTION
®
®
Technical Support:
Tel: [phone]
Fax: [phone]
http://www.ge.com/indsys/pm
Model:
Mods:
Wiring Diagram:
Inst. Manual:
Serial Number:
Firmware:
Mfg. Date:
T35D00HCHF8AH6AM6BP8BX7A
000
ZZZZZZ
D
MAZB98000029
D
1998/01/05
Control Power:
Contact Inputs:
Contact Outputs:
88-300V DC @ 35W / 77-265V AC @ 35VA
300V DC Max 10mA
Standard Pilot Duty / 250V AC 7.5A
360V A Resistive / 125V DC Break
4A @ L/R = 40mS / 300W
RATINGS:
T35
Transformer Management Relay
GE Power Management
Made in
Canada
- M A A B 9 7 0 0 0 0 9 9 -
NOTE

1-2 T35 Transformer Management Relay GE Multilin
1.2 UR OVERVIEW 1 GETTING STARTED
1
1.2UR OVERVIEW 1.2.1 INTRODUCTION TO THE UR
Historically, substation protection, control, and metering functions were performed with electromechanical equipment. This
first generation of equipment was gradually replaced by analog electronic equipment, most of which emulated the single-
function approach of their electromechanical precursors. Both of these technologies required expensive cabling and auxil-
iary equipment to produce functioning systems.
Recently, digital electronic equipment has begun to provide protection, control, and metering functions. Initially, this equip-
ment was either single function or had very limited multi-function capability, and did not significantly reduce the cabling and
auxiliary equipment required. However, recent digital relays have become quite multi-functional, reducing cabling and aux-
iliaries significantly. These devices also transfer data to central control facilities and Human Machine Interfaces using elec-
tronic communications. The functions performed by these products have become so broad that many users now prefer the
term IED (Intelligent Electronic Device).
It is obvious to station designers that the amount of cabling and auxiliary equipment installed in stations can be even further
reduced, to 20% to 70% of the levels common in 1990, to achieve large cost reductions. This requires placing even more
functions within the IEDs.
Users of power equipment are also interested in reducing cost by improving power quality and personnel productivity, and
as always, in increasing system reliability and efficiency. These objectives are realized through software which is used to
perform functions at both the station and supervisory levels. The use of these systems is growing rapidly.
High speed communications are required to meet the data transfer rates required by modern automatic control and moni-
toring systems. In the near future, very high speed communications will be required to perform protection signaling with a
performance target response time for a command signal between two IEDs, from transmission to reception, of less than 5
milliseconds. This has been established by the Electric Power Research Institute, a collective body of many American and
Canadian power utilities, in their Utilities Communications Architecture 2 (MMS/UCA2) project. In late 1998, some Euro-
pean utilities began to show an interest in this ongoing initiative.
IEDs with the capabilities outlined above will also provide significantly more power system data than is presently available,
enhance operations and maintenance, and permit the use of adaptive system configuration for protection and control sys-
tems. This new generation of equipment must also be easily incorporated into automation systems, at both the station and
enterprise levels. The GE Multilin Universal Relay (UR) has been developed to meet these goals.

GE Multilin T35 Transformer Management Relay 1-3
1 GETTING STARTED 1.2 UR OVERVIEW
1
1.2.2 HARDWARE ARCHITECTURE
a) UR BASIC DESIGN
The UR is a digital-based device containing a central processing unit (CPU) that handles multiple types of input and output
signals. The UR can communicate over a local area network (LAN) with an operator interface, a programming device, or
another UR device.
Figure 1–2: UR CONCEPT BLOCK DIAGRAM
The CPU module contains firmware that provides protection elements in the form of logic algorithms, as well as program-
mable logic gates, timers, and latches for control features.
Input elements accept a variety of analog or digital signals from the field. The UR isolates and converts these signals into
logic signals used by the relay.
Output elements convert and isolate the logic signals generated by the relay into digital or analog signals that can be used
to control field devices.
b) UR SIGNAL TYPES
The contact inputs and outputs are digital signals associated with connections to hard-wired contacts. Both ‘wet’ and ‘dry’
contacts are supported.
The virtual inputs and outputs are digital signals associated with UR-series internal logic signals. Virtual inputs include
signals generated by the local user interface. The virtual outputs are outputs of FlexLogic™ equations used to customize
the device. Virtual outputs can also serve as virtual inputs to FlexLogic™ equations.
The analog inputs and outputs are signals that are associated with transducers, such as Resistance Temperature Detec-
tors (RTDs).
The CT and VT inputs refer to analog current transformer and voltage transformer signals used to monitor AC power lines.
The UR-series relays support 1 A and 5 A CTs.
The remote inputs and outputs provide a means of sharing digital point state information between remote UR-series
devices. The remote outputs interface to the remote inputs of other UR-series devices. Remote outputs are FlexLogic™
operands inserted into UCA2 GOOSE messages and are of two assignment types: DNA standard functions and user-
defined (UserSt) functions.
The direct inputs and outputs provide a means of sharing digital point states between a number of UR-series IEDs over a
dedicated fiber (single or multimode), RS422, or G.703 interface. No switching equipment is required as the IEDs are con-
nected directly in a ring or redundant (dual) ring configuration. This feature is optimized for speed and intended for pilot-
aided schemes, distributed logic applications, or the extension of the input/output capabilities of a single relay chassis.
827822A2.CDR
Input Elements
LAN
Programming
Device
Operator
Interface
Contact Inputs Contact Outputs
Virtual Inputs Virtual Outputs
Analog Inputs Analog Outputs
CT Inputs
VT Inputs
Input
Status
Table
Output
Status
Table
Pickup
Dropout
Operate
Protective Elements
Logic Gates
Remote Outputs
-DNA
-USER
CPU Module Output Elements
Remote Inputs
Direct Inputs Direct Outputs

1-4 T35 Transformer Management Relay GE Multilin
1.2 UR OVERVIEW 1 GETTING STARTED
1
c) UR SCAN OPERATION
The UR-series devices operate in a cyclic scan fashion. The device reads the inputs into an input status table, solves the
logic program (FlexLogic™ equation), and then sets each output to the appropriate state in an output status table. Any
resulting task execution is priority interrupt-driven.
Figure 1–3: UR-SERIES SCAN OPERATION
1.2.3 SOFTWARE ARCHITECTURE
The firmware (software embedded in the relay) is designed in functional modules which can be installed in any relay as
required. This is achieved with Object-Oriented Design and Programming (OOD/OOP) techniques.
Object-Oriented techniques involve the use of ‘objects’ and ‘classes’. An ‘object’ is defined as “a logical entity that contains
both data and code that manipulates that data”. A ‘class’ is the generalized form of similar objects. By using this concept,
one can create a Protection Class with the Protection Elements as objects of the class such as Time Overcurrent, Instanta-
neous Overcurrent, Current Differential, Undervoltage, Overvoltage, Underfrequency, and Distance. These objects repre-
sent completely self-contained software modules. The same object-class concept can be used for Metering, I/O Control,
HMI, Communications, or any functional entity in the system.
Employing OOD/OOP in the software architecture of the Universal Relay achieves the same features as the hardware
architecture: modularity, scalability, and flexibility. The application software for any Universal Relay (e.g. Feeder Protection,
Transformer Protection, Distance Protection) is constructed by combining objects from the various functionality classes.
This results in a ’common look and feel’ across the entire family of UR-series platform-based applications.
1.2.4 IMPORTANT CONCEPTS
As described above, the architecture of the UR-series relays differ from previous devices. To achieve a general understand-
ing of this device, some sections of Chapter 5 are quite helpful. The most important functions of the relay are contained in
“elements”. A description of the UR-series elements can be found in the Introduction to Elements section in Chapter 5. An
example of a simple element, and some of the organization of this manual, can be found in the Digital Elements section. An
explanation of the use of inputs from CTs and VTs is in the Introduction to AC Sources section in Chapter 5. A description of
how digital signals are used and routed within the relay is contained in the Introduction to FlexLogic™ section in Chapter 5.
827823A1.CDR
PKP
DPO
OP
Protective Elements
Protection elements
serviced by sub-scan
Read Inputs
Solve Logic
Set Outputs

GE Multilin T35 Transformer Management Relay 1-5
1 GETTING STARTED 1.3 ENERVISTA URPC SETUP SOFTWARE
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1.3ENERVISTA URPC SETUP SOFTWARE 1.3.1 PC REQUIREMENTS
The faceplate keypad and display or the enerVista URPC Setup software interface can be used to communicate with the
relay. The enerVista URPC Setup software interface is the preferred method to edit settings and view actual values
because the PC monitor can display more information in a simple comprehensible format.
The following minimum requirements must be met for the enerVista URPC Setup software to properly operate on a PC.
• Pentium class or higher processor (Pentium II 300 MHz or higher recommended)
• Windows 95, 98, 98SE, ME, NT 4.0 (Service Pack 4 or higher), 2000, XP
• Internet Explorer 4.0 or higher
• 128 MB of RAM (256 MB recommended)
• 200 MB of available space on system drive and 200 MB of available space on installation drive
• Video capable of displaying 800 x 600 or higher in high-color mode (16-bit color)
• RS232 and/or Ethernet port for communications to the relay
The following qualified modems have been tested to be compliant with the T35 and the enerVista URPC Setup software.
• US Robotics external 56K FaxModem 5686
• US Robotics external Sportster 56K X2
• PCTEL 2304WT V.92 MDC internal modem
1.3.2 INSTALLATION
After ensuring the minimum requirements for using enerVista URPC Setup are met (see previous section), use the follow-
ing procedure to install the enerVista URPC Setup 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 no-charge enerVista software.
3. When installation is complete, start the enerVista Launchpad application.
4. Click the IED Setup section of the Launch Pad window.
5. In the enerVista Launch Pad window, click the Install Software button and select the “T35 Transformer Management
Relay” from the Install Software window as shown below. Select the “Web” option to ensure the most recent software

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1.3 ENERVISTA URPC SETUP SOFTWARE 1 GETTING STARTED
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release, or select “CD” if you do not have a web connection, then click the Check Now button to list software items for
the T35.
6. Select the T35 software program and release notes (if desired) from the list and click the Download Now button to
obtain the installation program.
7. enerVista Launchpad will obtain the installation program from the Web or CD. Once the download is complete, double-
click the installation program to install the enerVista URPC Setup software.
8. Select the complete path, including the new directory name, where the enerVista URPC Setup will be installed.
9. Click on Next to begin the installation. The files will be installed in the directory indicated and the installation program
will automatically create icons and add enerVista URPC Setup to the Windows start menu.

GE Multilin T35 Transformer Management Relay 1-7
1 GETTING STARTED 1.3 ENERVISTA URPC SETUP SOFTWARE
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10. Click Finish to end the installation. The T35 device will be added to the list of installed IEDs in the enerVista Launch-
pad window, as shown below.

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1.3 ENERVISTA URPC SETUP SOFTWARE 1 GETTING STARTED
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1.3.3 CONNECTING ENERVISTA URPC SETUP WITH THE T35
This section is intended as a quick start guide to using the enerVista URPC Setup software. Please refer to the enerVista
URPC Setup Help File and Chapter 4 of this manual for more information.
a) CONFIGURING AN ETHERNET CONNECTION
Before starting, verify that the Ethernet network cable is properly connected to the Ethernet port on the back of the relay. To
setup the relay for Ethernet communications, it will be necessary to define a Site, then add the relay as a Device at that site.
1. Install and start the latest version of the enerVista URPC Setup software (available from the GE enerVista CD or online
from http://www.GEindustrial.com/multilin (see previous section for installation instructions).
2. Select the “UR” device from the enerVista Launchpad to start enerVista URPC Setup.
3. Click the Device Setup button to open the Device Setup window, them click the Add Site button to define a new site.
4. Enter the desired site name in the “Site Name” field. If desired, a short description of site can also be entered along
with the display order of devices defined for the site. Click the OK button when complete.
5. The new site will appear in the upper-left list in the enerVista URPC Setup window. Click on the new site name and
then click the Device Setup button to re-open the Device Setup window.
6. Click the Add Device button to define the new device.
7. Enter the desired name in the “Device Name” field and a description (optional) of the site.
8. Select “Ethernet” from the Interface drop-down list. This will display a number of interface parameters that must be
entered for proper Ethernet functionality.
• Enter the relay IP address (from SETTINGS !PRODUCT SETUP !" COMMUNICATIONS !" NETWORK !IP ADDRESS)
in the “IP Address” field.
• Enter the relay Modbus address (from the PRODUCT SETUP !" COMMUNICATIONS !" MODBUS PROTOCOL !MOD-
BUS SLAVE ADDRESS setting) in the “Slave Address” field.
• Enter the Modbus port address (from the PRODUCT SETUP !" COMMUNICATIONS !" MODBUS PROTOCOL !"
MODBUS TCP PORT NUMBER setting) in the “Modbus Port” field.
9. Click the Read Order Code button to connect to the T35 device and upload the order code. If an communications error
occurs, ensure that the three enerVista URPC Setup values entered in the previous step correspond to the relay set-
ting values.
10. Click OK when the relay order code has been received. The new device will be added to the Site List window (or
Online window) located in the top left corner of the main enerVista URPC Setup window.
The Site Device has now been configured for Ethernet communications. Proceed to Section c) below to begin communica-
tions.
b) CONFIGURING AN RS232 CONNECTION
Before starting, verify that the RS232 serial cable is properly connected to the RS232 port on the front panel of the relay.
1. Install and start the latest version of the enerVista URPC Setup software (available from the GE enerVista CD or online
from http://www.GEindustrial.com/multilin.
2. Select the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.
3. Enter the desired site name in the “Site Name” field. If desired, a short description of site can also be entered along
with the display order of devices defined for the site. Click the OK button when complete.
4. The new site will appear in the upper-left list in the enerVista URPC Setup window. Click on the new site name and
then click the Device Setup button to re-open the Device Setup window.
5. Click the Add Device button to define the new device.
6. Enter the desired name in the “Device Name” field and a description (optional) of the site.
7. Select “Serial” from the Interface drop-down list. This will display a number of interface parameters that must be
entered for proper serial communications.

GE Multilin T35 Transformer Management Relay 1-9
1 GETTING STARTED 1.3 ENERVISTA URPC SETUP SOFTWARE
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• Enter the relay slave address and COM port values (from the SETTINGS !PRODUCT SETUP !" COMMUNICATIONS
!" SERIAL PORTS menu) in the “Slave Address” and “COM Port” fields.
• Enter the physical communications parameters (baud rate and parity settings) in their respective fields.
8. Click the Read Order Code button to connect to the T35 device and upload the order code. If an communications error
occurs, ensure that the enerVista URPC Setup serial communications values entered in the previous step correspond
to the relay setting values.
9. Click “OK” when the relay order code has been received. The new device will be added to the Site List window (or
Online window) located in the top left corner of the main enerVista URPC Setup window.
The Site Device has now been configured for RS232 communications. Proceed to Section c) Connecting to the Relay
below to begin communications.
c) CONNECTING TO THE RELAY
1. Open the Display Properties window through the Site List tree as shown below:
2. The Display Properties window will open with a status indicator on the lower left of the enerVista URPC Setup window.
3. If the status indicator is red, verify that the Ethernet network cable is properly connected to the Ethernet port on the
back of the relay and that the relay has been properly setup for communications (steps A and B earlier).
If a relay icon appears in place of the status indicator, than a report (such as an oscillography or event record) is open.
Close the report to re-display the green status indicator.
4. The Display Properties settings can now be edited, printed, or changed according to user specifications.
842743A1.CDR
Expand the Site List by double-clicking
or by selecting the [+] box
Communications Status Indicator
Green LED = OK, Red LED = No Communications
UR icon = report open

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Refer to Chapter 4 in this manual and the enerVista URPC Setup Help File for more information about the
using the enerVista URPC Setup software interface.
NOTE