Thytronic Pro-N NVA100X-D User manual

NVA100X-D - Manual - 02 - 2016

MANUAL

NVA100X-D

THE COMPREHENSIVE SOLUTION FOR DIFFERENTIAL PROTECTION

OF GENERATORS/MOTORS/TRANSFORMERS

2NVA100X-D - Manual - 02 - 2016

TABLE OF CONTENTS

1 INTRODUCTION 6

Scope and liability...........................................................................................................................................................................................6

Applicability......................................................................................................................................................................................................6

Conformity ........................................................................................................................................................................................................6

Service support ...............................................................................................................................................................................................6

Copyright...........................................................................................................................................................................................................6

Warranty...........................................................................................................................................................................................................6

Safety recommendations...............................................................................................................................................................................6

Insulation tests ................................................................................................................................................................................................6

Product identification.....................................................................................................................................................................................7

Environment .....................................................................................................................................................................................................7

Graphical conventions ...................................................................................................................................................................................7

Glossary/definitions ........................................................................................................................................................................................7

2 GENERAL 11

Preface............................................................................................................................................................................................................11

Photo ...............................................................................................................................................................................................................11

Main features.................................................................................................................................................................................................12

3 TECHNICAL DATA 13

3.1 GENERAL........................................................................................................................................................................................................... 13

Measuring relays and protection equipment.......................................................................................................................................... 13

Mechanical data .......................................................................................................................................................................................... 13

Insulation test ............................................................................................................................................................................................... 13

Voltage dip and interruption....................................................................................................................................................................... 13

EMC tests for interference immunity........................................................................................................................................................ 13

Emission..........................................................................................................................................................................................................14

Mechanical tests...........................................................................................................................................................................................14

Climatic tests..................................................................................................................................................................................................14

Safety ..............................................................................................................................................................................................................14

Certifications.................................................................................................................................................................................................14

3.2 INPUT CIRCUITS ...............................................................................................................................................................................................15

Auxiliary power supply Uaux ......................................................................................................................................................................15

Phase current inputs - side H and side L ..................................................................................................................................................15

Residual current inputs - side 1 and side 2...............................................................................................................................................15

Phase voltage inputs ....................................................................................................................................................................................15

Residual voltage input..................................................................................................................................................................................15

Binary inputs..................................................................................................................................................................................................15

Block input (Logic selectivity).....................................................................................................................................................................15

3.3 OUTPUT CIRCUITS............................................................................................................................................................................................16

Relays..............................................................................................................................................................................................................16

Block output (Logic selectivity)...................................................................................................................................................................16

3.4 MMI (Man Machine Interface) ......................................................................................................................................................................16

3.5 COMMUNICATION INTERFACES ...................................................................................................................................................................16

Local port........................................................................................................................................................................................................16

Remote ports..................................................................................................................................................................................................16

3.6 RATED VALUES AND GENERAL SETTINGS..................................................................................................................................................17

Rated values...................................................................................................................................................................................................17

Transformer data (87T element)..................................................................................................................................................................17

Output relays................................................................................................................................................................................................. 18

Input sequence............................................................................................................................................................................................. 18

Polarity........................................................................................................................................................................................................... 18

Starting control set ...................................................................................................................................................................................... 18

3.7 PROTECTIVE FUNCTIONS .............................................................................................................................................................................. 18

Base current - IB.......................................................................................................................................................................................... 18

Underimpedance - 21 .................................................................................................................................................................................. 18

Thermometric probes - 26........................................................................................................................................................................... 19

Undervoltage - 27......................................................................................................................................................................................... 19

Positive sequence undervoltage - 27V1................................................................................................................................................... 19

Directional active overpower 32P............................................................................................................................................................. 19

Undercurrent - 37......................................................................................................................................................................................... 20

Directional active underpower 37P........................................................................................................................................................... 20

Loss of field - 40........................................................................................................................................................................................... 20

Negative sequence overcurrent for Generator protection - 46G .........................................................................................................21

Negative sequence overcurrent for Motor protection - 46M ...............................................................................................................21

Phase rotation direction check - 47..........................................................................................................................................................22

Thermal image for Motor/generator protection - 49MG.........................................................................................................................22

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NVA100X-D - Manual - 02 - 2016

Phase overcurrent - 50/51 side H .............................................................................................................................................................. 23

Phase overcurrent - 50/51 side L................................................................................................................................................................24

Locked rotor - 51LR(48)/14 ...........................................................................................................................................................................25

Voltage-controlled / restraint overcurrent - 51V......................................................................................................................................26

Residual overcurrent - 50N.1/51N .1 or High impedance restricted earth fault - 87NHIZ.1 - side 1 ...............................................26

Residual overcurrent - 50N.2/51N .2 or High impedance restricted earth fault - 87NHIZ.2 - side 2 .............................................. 28

Calculated residual overcurrent - 50N(Comp)/51N(Comp).................................................................................................................... 29

Minimum power factor - 55 ........................................................................................................................................................................ 30

Overvoltage - 59............................................................................................................................................................................................ 30

Residual overvoltage - 59N..........................................................................................................................................................................31

Negative sequence overvoltage - 59V2.....................................................................................................................................................31

High impedance restricted earth fault - 64REF ........................................................................................................................................32

Maximum number of startings (Restart inhibition) - 66...........................................................................................................................32

Directional earth fault overcurrent- 67N...................................................................................................................................................32

Directional earth fault overcurrent with calculated residual current- 67N(Comp)............................................................................34

Overfrequency - 81O.....................................................................................................................................................................................36

Underfrequency - 81U ..................................................................................................................................................................................37

Differential - 87G-87M-87T...........................................................................................................................................................................37

Breaker failure - BF.......................................................................................................................................................................................37

3.8 CONTROL AND MONITORING....................................................................................................................................................................... 38

Second harmonic restraint - 2ndh-REST.................................................................................................................................................. 38

Trip Circuit Supervision - 74TCS................................................................................................................................................................. 38

Selective block - BLOCK2 ........................................................................................................................................................................... 38

Internal selective block - BLOCK4............................................................................................................................................................. 38

Circuit Breaker supervision........................................................................................................................................................................ 38

VT supervision - 74VT .................................................................................................................................................................................. 38

CT supervision - 74CT side H...................................................................................................................................................................... 38

CT supervision - 74CT side L....................................................................................................................................................................... 39

Pilot wire diagnostic.................................................................................................................................................................................... 39

Demand measures ....................................................................................................................................................................................... 39

Oscillography (DFR) ..................................................................................................................................................................................... 39

3.9 METERING......................................................................................................................................................................................................... 40

Accuracy (type test)..................................................................................................................................................................................... 40

Measures....................................................................................................................................................................................................... 40

4 FUNCTION CHARACTERISTICS 42

4.1 HARDWARE .......................................................................................................................................................................................................42

Power supply board......................................................................................................................................................................................42

CPU module....................................................................................................................................................................................................42

Input board .................................................................................................................................................................................................... 43

MMI (keyboard, LED and display) ............................................................................................................................................................. 43

4.2 FIRMWARE.........................................................................................................................................................................................................44

Base software................................................................................................................................................................................................44

Real-time operating system.........................................................................................................................................................................44

Task..................................................................................................................................................................................................................44

Drivers.............................................................................................................................................................................................................45

Application Software....................................................................................................................................................................................45

Data Base.......................................................................................................................................................................................................45

Self test (Application) ...................................................................................................................................................................................45

Development tool (Builder)..........................................................................................................................................................................45

4.3 I/0.........................................................................................................................................................................................................................46

Metering inputs .............................................................................................................................................................................................46

Signal processing..........................................................................................................................................................................................46

Conventions....................................................................................................................................................................................................52

Polarity reversing ......................................................................................................................................................................................... 53

Use of measured signals..............................................................................................................................................................................56

LED indicators................................................................................................................................................................................................67

Communication interfaces.......................................................................................................................................................................... 70

4.4 PROTECTIVE ELEMENTS .................................................................................................................................................................................71

Transformer menu .........................................................................................................................................................................................76

Thermal protection with RTD thermometric probes - 26 ....................................................................................................................... 83

Positive sequence undervoltage - 27V1................................................................................................................................................... 89

Directional active overpower - 32P............................................................................................................................................................91

Directional active underpower - 37P.........................................................................................................................................................96

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4NVA100X-D - Manual - 02 - 2016

Negative sequence overcurrent for Generator protection - 46G........................................................................................................105

Negative sequence overcurrent for motor protection - 46M ............................................................................................................. 110

Phase rotation direction check - 47.........................................................................................................................................................117

Thermal image - 49MG for motor or generator protection.................................................................................................................. 118

Phase overcurrent - 50/51 side H and side L......................................................................................................................................... 129

Locked rotor- 50S/51LR(48)/14.................................................................................................................................................................. 139

Voltage controlled/restraint overcurrent - 51V ......................................................................................................................................145

Residual overcurrent - 50N.1/51N.1, 50N.2/51N.2 or high impedance restricted earth fault - 87NHIZ.1, 87NHIZ.2 side 1,2....152

Residual overcurrent - 50N(Comp)/51N(Comp) side H or side L ........................................................................................................ 163

Minimum power factor - 55 ..................................................................................................................................................................... 173

Residual overvoltage - 59N........................................................................................................................................................................181

Negative sequence overvoltage - 59V2...................................................................................................................................................185

Low impedance restricted ground fault- 64REF.....................................................................................................................................187

Ground directional overcurrent - 67N......................................................................................................................................................192

Ground directional overcurrent with calculated residual current - 67N(Comp) ..............................................................................215

Logical block - BLOCK1............................................................................................................................................................................. 248

Selective block -BLOCK2 .......................................................................................................................................................................... 250

Internal selective block -BLOCK4.............................................................................................................................................................255

Logical block summary.............................................................................................................................................................................. 258

Remote tripping .......................................................................................................................................................................................... 260

Frequency tracking.....................................................................................................................................................................................261

Second Harmonic Restraint - 2ndh-REST...............................................................................................................................................262

Cold Load Pickup - CLP ............................................................................................................................................................................. 263

Cold Load Pickup - CLP for motor-generator protection ......................................................................................................................264

Summary of elements where second harmonic restraint and Cold Load Pickup functions may be enabled.............................266

CT supervision - 74CT.................................................................................................................................................................................267

Trip circuit supervision - 74TCS................................................................................................................................................................ 270

Circuit breaker supervision ...................................................................................................................................................................... 273

Virtual I/O......................................................................................................................................................................................................275

Oscillography ............................................................................................................................................................................................. 279

5 MEASURES, LOGIC STATES AND COUNTERS 280

Protection states.........................................................................................................................................................................................282

Delayed inputs.............................................................................................................................................................................................282

Internal states..............................................................................................................................................................................................282

Counters....................................................................................................................................................................................................... 283

Self test ........................................................................................................................................................................................................ 283

Selective Block - BLOCK2..........................................................................................................................................................................284

Fault recording - SFR..................................................................................................................................................................................284

Event recording - SER.................................................................................................................................................................................285

Oscillography - DFR ....................................................................................................................................................................................285

6 INSTALLATION 288

6.1 PACKAGING.................................................................................................................................................................................................... 288

6.2 MOUNTING..................................................................................................................................................................................................... 288

6.3 ELECTRICAL CONNECTIONS ........................................................................................................................................................................291

6.4 RATED In AND Ien SETTINGS ..................................................................................................................................................................... 299

6.5 LED COMMISSIONING ................................................................................................................................................................................. 299

6.6 FINAL OPERATIONS ...................................................................................................................................................................................... 299

7 PROGRAMMING AND SETTINGS 300

7.1 SW ThySetter.................................................................................................................................................................................................. 300

ThySetter use .............................................................................................................................................................................................. 300

7.2 MMI (Man Machine Interface) ....................................................................................................................................................................301

Reading variables (READ)..........................................................................................................................................................................301

Setting modifying (SET) ..............................................................................................................................................................................302

TEST.............................................................................................................................................................................................................. 303

COMMUNICATION..................................................................................................................................................................................... 303

Circuit breaker commands ....................................................................................................................................................................... 303

Enable / block changes via keyboard - Password.................................................................................................................................304

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NVA100X-D - Manual - 02 - 2016

7.3 MENU TREE......................................................................................................................................................................................................306

7.4 MAINTENANCE...............................................................................................................................................................................................321

7.5 REPAIR..............................................................................................................................................................................................................321

7.6 PACKAGING.....................................................................................................................................................................................................321

8 APPENDIX 322

8.1 APPENDIX A1 - Inverse time curves ...........................................................................................................................................................322

8.2 APPENDIX A1 - Inverse time IEC curves .................................................................................................................................................. 323

Mathematical formula ............................................................................................................................................................................... 323

46M - First element - Standard inverse time curve (type A) ................................................................................................................324

46M - First element - Very inverse time curve (IEC 60255-3/BS142 type B).......................................................................................325

46M - First element - Extremely inverse time curve (IEC 60255-3/BS142 type C) ............................................................................326

Phase overcurrent 50/51 side H and side L - Standard inverse time curve (IEC 60255-3/BS142 type A) ....................................327

Phase overcurrent 50/51 side H and side L - Very inverse time curve (IEC 60255-3/BS142 type B)............................................ 328

Phase overcurrent 50/51 side H and side L - Long Time Inverse curve (IEC 60255-3/BS142 type B) .......................................... 329

Phase overcurrent 50/51 side H and side L - Extremely inverse time curve (IEC 60255-3/BS142 type C) .................................. 330

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Standard inverse time curve

(IEC 60255-3/BS142 type A) ..................................................................................................................................................................331

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) -Very inverse time curve

(IEC 60255-3/BS142 type B) ..................................................................................................................................................................332

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Long Time Inverse curve

(IEC 60255-3/BS142 type B) ................................................................................................................................................................. 333

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Extremely inverse time curve

(IEC 60255-3/BS142 type C) ..................................................................................................................................................................334

Ground directional overcurrent - 67N - Standard inverse time curve (IEC 60255-3/BS142 type A) ............................................335

Ground directional overcurrent - 67N - Very inverse time curve (IEC 60255-3/BS142 type B)......................................................336

Ground directional overcurrent - 67N - Extremely inverse time curve (IEC 60255-3/BS142 type C) ............................................337

Ground directional overcurrent 67N(Comp) - Standard inverse time curve (IEC 60255-3/BS142 type A).................................. 338

Ground directional overcurrent 67N(Comp) - Very inverse time curve (IEC 60255-3/BS142 type B) .......................................... 339

Ground directional overcurrent 67N(Comp) - Extremely inverse time curve (IEC 60255-3/BS142 type C)................................. 340

8.3 APPENDIX A3 - Inverse time ANSI/IEEE curves .......................................................................................................................................341

Mathematical formula................................................................................................................................................................................341

Negative sequence overcurrent 46M - Moderately inverse time curve (ANSI/IEEE type MI) .....................................................342

Negative sequence overcurrent 46M - Very inverse time curve (ANSI/IEEE type VI).................................................................. 343

Negative sequence overcurrent 46M - Extremely inverse time curve (ANSI/IEEE type EI)..........................................................344

Phase overcurrent 50/51 side H and side L - Moderately inverse time curve (ANSI/IEEE type MI)............................................345

Phase overcurrent 50/51 side H and side L - Very inverse time curve (ANSI/IEEE type VI)..........................................................346

Phase overcurrent 50/51 side H and side L - Extremely inverse time curve (ANSI/IEEE type EI).................................................347

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 e 50N(Comp)/51N(Comp) - Moderately inverse time curve

(ANSI/IEEE type MI) ............................................................................................................................................................................. 348

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Very inverse time curve (ANSI/IEEE type VI) 349

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Extremely inverse time curve (EI) .................. 350

Directional ground overcurrent 67N - Moderately inverse time curve (ANSI/IEEE type MI) .......................................................351

Directional ground overcurrent 67N - Very inverse time curve (ANSI/IEEE type VI) .....................................................................352

Directional ground overcurrent 67N - Extremely inverse time curve (ANSI/IEEE type EI)........................................................... 353

Directional ground overcurrent 67N(Comp) - Moderately inverse time curve (ANSI/IEEE type MI)...........................................354

Directional ground overcurrent 67N(Comp) - Very inverse time curve (ANSI/IEEE type VI).........................................................355

Directional ground overcurrent 67N(Comp) - Extremely inverse time curve (ANSI/IEEE type EI) ...............................................356

8.4 APPENDIX A3 - Inverse time - RECTIFIER, I2t and EM curves...............................................................................................................357

Mathematical formula................................................................................................................................................................................357

Phase overcurrent 50/51 side H and side L - Rectifier curves............................................................................................................ 358

Negative sequence overcurrent 46M - I2t inverse curves (I2t=K).................................................................................................... 359

Phase overcurrent 50/51 side H and side L - I2t inverse curves (I2t=K)............................................................................................ 360

Phase overcurrent 50/51 side H and side L - I2t inverse curves (I2t=K)............................................................................................361

Negative sequence overcurrent 46M - Electromechanical inverse curves (EM)............................................................................362

Phase overcurrent 50/51 side H and side L - Electromechanical inverse curves (EM) ................................................................. 363

Residual overcurrent 50N.1/51N.1, 50N.2/51N.2 and 50N(Comp)/51N(Comp) - Electromechanical inverse curves (EM).........364

Ground directional overcurrent 67N - Electromechanical inverse curves (EM)..............................................................................365

Ground directional overcurrent 67N(Comp) - Electromechanical inverse curves (EM).................................................................366

8.5 APPENDIX B1 - I/O Diagram .........................................................................................................................................................................367

8.6 APPENDIX B2 - Interfaces ........................................................................................................................................................................... 368

8.7 APPENDIX B3 - Protective elements.......................................................................................................................................................... 369

8.8 APPENDIX B4 - Connection diagrams ....................................................................................................................................................... 370

8.9 APPENDIX C1 - Pro-NX Dimensions............................................................................................................................................................374

8.10 APPENDIX E - Revisions history...................................................................................................................................................................375

8.11 APPENDIX F - EC Declaration of conformity..............................................................................................................................................376

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6NVA100X-D - Manual - 02 - 2016 INTRODUCTION

1 INTRODUCTION

Scope and liability

The technical characteristics of NVA100X-D, protective relays instructions for installation, adjust-

ment and commissioning are illustrated.

This manual has been checked out, however, deviations from the description cannot be completely

ruled out, so that no liability in a legal sense for correctness and completeness of the information or

from any damage that might result from its use is formally disclaimed.

The information given in this document is reviewed regularly; any corrections and integration will be

included in subsequent editions that are identiﬁed by the date of revision.

We appreciate any suggestions for improvement.

We reserve the right to make technical improvements without notice.

Applicability

This manual is valid for NVA100X-D devices with ﬁrmware version 1.70 and following.

Conformity

The product complies with the CEE directives:

EMC Council Directives 2014/30/EC

Low voltage Directives: 2014/35/EC

Service support

Contact: Service tecnico THYTRONIC www.thytronic.it

Warranty

Thytronic warrants devices against defects in materials and workmanship under normal use for a

period of ONE (1) year from the date of retail purchase by the original end-user purchaser (“Warranty

Period”).

Safety recommendations

The warming contained in this document are all-important for safety; special attention must be paid

to the following symbols:

Installation and commissioning must be carried out by qualiﬁed person; Thytronic assumes no re-

sponsibility for damages caused from improper use that does not comply all warning and caution in

this manual.

In particular the following requirements must be met:

Remove power before opening it.

Verify the voltage absence by means suitable instrumentation on relay connections; attention must

be paid to all circuits supplied by external sources (binary input, CT, etc...)

Care must be taken when handling metal parts.

Insulation tests

After insulation tests, hazardous voltages (capacitor charges,...) may be arise; it is advisable to grad-

ually reduce the test voltage avoiding to erase it abruptly.

—

•

—

•

—

CAUTION Minor personal injury or property damage can result if proper precautions are not taken

DANGER Death, severe personal injury or substantial property damage will result if proper precautions

are not taken

WARNING Death, severe personal injury or substantial property damage can result if proper precautions

are not taken.

CAUTION Minor personal injury or property damage can result if proper precautions are not taken

DANGER Death, severe personal injury or substantial property damage will result if proper precautions

are not taken

WARNING Death, severe personal injury or substantial property damage can result if proper precautions

are not taken.

CAUTION

Settings must be established on the basis of a coordination study.

Numerical values inside examples have educational purpose only; they don’t be used, in no way,

for actual applications.

CAUTION

Settings must be established on the basis of a coordination study.

Numerical values inside examples have educational purpose only; they don’t be used, in no way,

for actual applications.

INTRODUCTION 7

NVA100X-D - Manual - 02 - 2016

Product identification

Each device is equipped with:

Identiﬁcation label installed on the front side with following informations: code number, phase and

residual nominal currents, auxiliary voltage range and CE mark[1]:

Test label with following informations: data, serial number and test operator signature[2].

Environment

The NVA100X-D device must be employed according to the environment conditions shown (see tech-

nical data).

In case of different environment conditions, appropriate provisions must be provided (conditioning

system, humidity control, etc...).

If contaminants are present (dust, corrosive substances, etc...), ﬁlters must be provided.

Graphical conventions

The CEI/IEC and ANSI symbols is employed where possible:

e.g.: 51 = ANSI code concerning the overcurrent element.

Following text formats are used:

The ThySetter menu:

Phase overcurrent -50/51

The parameter description (measures, thresholds, operate time,...) and related value:

I> element

Deﬁnite time

I>def

The display messages (MMI) are shown as:

NVA100X

Notes are highlighted with cursive letters inside colored bar

Note: Useful description note

Glossary/definitions

Rated frequency

InH Relay phase rated current side H

InpH Phase CT primary rated current side H

InL Relay phase rated current side L

InpL Phase CT primary rated current side L

Ing Protected device rated current

IEn1 Relay residual rated current (input 1)

IEnp1 Residual CT primary rated current (input 1)

IEn2 Relay residual nominal current (input 2)

IEnp2 Residual CT primary nominal current (input 2)

ANSI codes:21 Underimpedance

26 Thermal with Pt100 probes

27 Undervoltage

27V1 Positive sequence undervoltage

32P Directional active overpower

37 Undercurrent

37P Directional active underpower

40 Loss of ﬁeld

46M-46G Negative sequence overcurrent

47 Phase reversal

49MG Thermal image

50/51 Phase overcurrent side H and side L

51LR(48)/14 Locked rotor

51V Voltage restraint overcurrent

50N1-2/51N1-2/87NHIZ* Residual overcurrent (sides1-2)/

High impedance restricted earth fault

50N(Comp)/51N(Comp) Calculated residual overcurrent

55 Minimum power factor

Note 1 The rating data can be found on labels on the back and on the front (accessible after removing the left frame)

Note 2 The rating data can be found on labels on the front plate (accessible after removing the right frame)

—

•

—

NVA100X#0D2J0TE0

In5A

UAUX 110-230 Vac/dc

100V

IEn

UEn

1A 1A

5A 1A

NVA100X#0D2J0TE0

In5A

UAUX 110-230 Vac/dc

100V

IEn

UEn

1A 1A

5A 1A

8NVA100X-D - Manual - 02 - 2016 INTRODUCTION

59 Overvoltage

59N Residual overvoltage

59V2 Negative sequence overvoltage

64REF Low impedance restricted earth fault

66 Maximum number of startings (Restart inhibition)

67N Ground directional overcurrent

67N(Comp) Ground directional overcurrent with calculated

residual current

81O/81U Overfrequency and underfrequency

87G-87M/87T Double slope biased differential for generator/motor/transformer

BF Circuit breaker failure

74CT-74VT CT-VT supervision

74TCS Trip circuit supervision

52 o CB (Circuit Breaker) Circuit Breaker

52a Auxiliary contact in the breaker that is in the same position as the

breaker. It can be assigned to a binary input to locate the CB position

(Breaker failure and/or CB diagnostic functions).

52b Auxiliary contact in the breaker that is in the opposite position as the

breaker (52b open = CB closed)

DFR Digital Fault Recorder (Oscillography)

SER Sequential Event Recorder

SFR Sequential Fault Recorder

ANSI American National Standard Institute

IEEE Institute of Electrical and Electronics Engineers

IEC International Electrotechnical Commission

CENELEC Comité Européen de Normalisation Electrotechnique

K1...Kx Output relays

Pulse Output relay with pulse operation

tTR Output relay minimum pulse width

Latched Output relay with latched operation (manual reset) Output relay with

latched operation (automatic reset)

No-latched Output relay with no-latched operation (automatic reset)

CT Current Transformer

ThySensor Combo device

P1 IEC nomenclature for primary polarity mark of CTs (as an alternative to

a ANSI dot)

P2 IEC nomenclature for primary polarity mark of CTs (as an alternative to

a ANSI no-dot)

S1 IEC nomenclature for secondary polarity mark of CTs (as an alternative

to a ANSI dot)

S2 IEC nomenclature for secondary polarity mark of CTs (as an alternative

to a ANSI no-dot)

Self test Diagnostic

Start Leave an initial condition or reset condition (Pickup)

Trip Operation (with operate time)

Operating time Duration of time interval between the instant when the character-

istic quantity in reset condition is changed, under speciﬁed condi-

tions, and the instant when the relay operates

Dropout ratio The ratio of a reset value to an operate value in well-speciﬁed con-

ditions. The dropout ratio may be lower or greater than 1 according

as an over or under element is considered

Reset time Duration of the time interval between the instant when the charac-

teristic quantity in operate condition is changed, under speciﬁed

conditions, and the instant when the relay operates.

The stated reset time is related to a step variation of characteristic

quantity in operate condition to the reset condition.

Overshoot time The critical impulse time for a relay which is in its reset condition, is

the longest duration a speciﬁed change in the input energizing quan-

tities (characteristic quantity), which will cause the relay to change

to operate condition, can be applied without the relay switches. The

overshoot time is the difference from the operate time and the criti-

cal impulse time. The declared values for the overshoot time are ap-

plicable with the lower setting value of the operation time.

MMI (Man Machine Interface) Operator front panel

ThySetter Setting and monitoring software

Subnet Mask (Ethernet nomenclature)

Sw Software

Fw Firmware

Upgrade Firmware upgrade

XML eXtensible Markup LanguageXML

EXtensible Markup Language

Upgrade Firmware upgrade

INTRODUCTION 9

NVA100X-D - Manual - 02 - 2016

Symbols.ai

Symbols

I>> Start

I>> BF_OUT

IPh Block2

Logic internal signal (output); may be a logical state

(e.g.I>> Start

) or a numerical value

It is available for reading (ThySetter + communication interface)

Logic external signal (intput); may be a command coming from a binary input or a sw command

It is available for reading (ThySetter + communication interface)

Internal signal (e.g. Breaker Failure output state concerning to the 2nd threshold of the 50 element)

It is not available for reading (missing arrow)

AND and NAND logic gates

OR and NOR logic gates

Limit block (I>> threshold).

Computation block (Max phase current)

Threshold setting (e.g. pickup

I>>)

The value is available for reading and is adjustable by means ThySetter + MMI.

Switch

ON delay timer with reset (tON delay)

ON delay timer without reset (tON delay)

OFF delay timer (dropout) without reset (tOFF delay)

Curve type (deﬁnite/inverse time)

IL3

Max[IL1 ,IL2 ,IL3 ]

IL2

IL1

tON tON tON tON

RESET

INPUT

OUTPUT

tOFF

INPUT

OUTPUT

tON tON tON

INPUT

OUTPUT

tON

& &

≥1≥1

EXOR logic gate

tOFF

I>>

II ≥

I>>

tON

RESET

10 NVA100X-D - Manual - 02 - 2016 INTRODUCTION

Symbols1 .ai

RESET

INPUT

OUTPUT

tOFF

tOFF tOFF

Minimum pulse width operation for output relays (tTR

)

tTR

INPUT

OUTPUT

tTR

INPUT

OUTPUT

Latched operating mode for output relays and LEDs

Pulse operating mode for output relays

INPUT

OUTPUT

Latched

tTR

RESET

OFF delay timer (dropout) with reset (tOFF delay)

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