Thytronic NV021 Manuale utente

NV021 - Manual - 08 - 2012

MANUAL

NV021

LOM PROTECTION RELAY

VOLTAGE AND FREQUENCY PROTECTION FOR LOW

VOLTAGE APPLICATIONS

2NV021 - Manual - 08 - 2012

TABLE OF CONTENTS

1 INTRODUCTION 5

Scope and liability...........................................................................................................................................................................................5

Applicability......................................................................................................................................................................................................5

Conformity ........................................................................................................................................................................................................5

Technical support............................................................................................................................................................................................5

Copyright...........................................................................................................................................................................................................5

Warranty...........................................................................................................................................................................................................5

Safety recommendations...............................................................................................................................................................................5

Insulation tests ................................................................................................................................................................................................5

Product identification .....................................................................................................................................................................................6

Environment .....................................................................................................................................................................................................6

Graphical conventions ...................................................................................................................................................................................6

Glossary/definitions ........................................................................................................................................................................................6

2 GENERAL 10

Preface........................................................................................................................................................................................................... 10

Input circuits for direct connection .......................................................................................................................................................... 10

Main features.................................................................................................................................................................................................11

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

3 TECHNICAL DATA 12

3.1 GENERAL............................................................................................................................................................................................................12

Technical data................................................................................................................................................................................................12

Insulation ........................................................................................................................................................................................................12

EMC tests for interference immunity.........................................................................................................................................................12

Voltage dip and interruption .......................................................................................................................................................................12

EMC tests for interference immunity.........................................................................................................................................................12

Emission......................................................................................................................................................................................................... 13

Mechanical tests.......................................................................................................................................................................................... 13

Climatic tests................................................................................................................................................................................................. 13

Safety ............................................................................................................................................................................................................. 13

Certifications................................................................................................................................................................................................. 13

3.2 INPUT CIRCUITS ...............................................................................................................................................................................................14

Auxiliary power supply Uaux ......................................................................................................................................................................14

Voltage input circuits....................................................................................................................................................................................14

Binary input circuits......................................................................................................................................................................................14

3.3 OUTPUT CIRCUITS............................................................................................................................................................................................14

Relays..............................................................................................................................................................................................................14

3.4 MMI.....................................................................................................................................................................................................................14

3.5 COMMUNICAtION CIRCUITS..........................................................................................................................................................................14

Local port........................................................................................................................................................................................................14

Remote ports.................................................................................................................................................................................................14

3.6 GENERAL SETTINGS ........................................................................................................................................................................................15

3.7 PROTECTIVE ELEMENTS .................................................................................................................................................................................15

Thermal protection with Pt100 probes - 26 ...............................................................................................................................................15

Undervoltage - 27..........................................................................................................................................................................................15

Positive sequence undervoltage - 27V1....................................................................................................................................................15

Overvoltage - 59.............................................................................................................................................................................................16

Ten minutes overvoltage - 59Uavg .............................................................................................................................................................16

Negative sequence overvoltage - 59V2.....................................................................................................................................................16

Underfrequency (81U) ..................................................................................................................................................................................16

Overfrequency (81O).....................................................................................................................................................................................17

Frequency rate of change (81R)................................................................................................................................................................. 18

Breaker failure - BF...................................................................................................................................................................................... 18

3.8 CONTROL AND MONITORING....................................................................................................................................................................... 19

Frequency tracking ...................................................................................................................................................................................... 19

Trip Circuit Supervision - 74TCS................................................................................................................................................................. 19

Circuit Breaker supervision........................................................................................................................................................................ 19

Oscillography (DFR) ..................................................................................................................................................................................... 19

PLC (Programmable Logic Controller) ...................................................................................................................................................... 19

3.9 METERING......................................................................................................................................................................................................... 20

4 FUNCTION CHARACTERISTICS 21

4.1 HARDWARE .......................................................................................................................................................................................................21

Power supply board......................................................................................................................................................................................22

CPU board.......................................................................................................................................................................................................22

Input board .....................................................................................................................................................................................................22

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NV021 - Manual - 08 - 2012

MMI (keyboard, LED and display) ..............................................................................................................................................................22

4.2 SOFTWARE........................................................................................................................................................................................................ 23

Base software............................................................................................................................................................................................... 23

Real-time operating system........................................................................................................................................................................ 23

Task................................................................................................................................................................................................................. 23

Drivers.............................................................................................................................................................................................................24

Application Software....................................................................................................................................................................................24

Data Base.......................................................................................................................................................................................................24

Self test (Application) ...................................................................................................................................................................................24

Development tools (Builder)........................................................................................................................................................................24

4.3 I/O DESCRIPTION..............................................................................................................................................................................................25

Metering inputs .............................................................................................................................................................................................25

Signal processing..........................................................................................................................................................................................25

Conventions....................................................................................................................................................................................................27

Binary inputs ................................................................................................................................................................................................. 29

Output relays................................................................................................................................................................................................. 33

LED indicators................................................................................................................................................................................................35

Communication interfaces...........................................................................................................................................................................37

4.4 PROTECTIVE ELEMENTS ................................................................................................................................................................................ 38

Rated values.................................................................................................................................................................................................. 38

Positive sequence undervoltage - 27V1....................................................................................................................................................46

Ten minuts overvoltage - 59Uavg................................................................................................................................................................52

Negative sequence overvoltage - 59V2.....................................................................................................................................................54

Overfrequency - 81O.....................................................................................................................................................................................56

Underfrequency - 81U ................................................................................................................................................................................. 58

Application notes about over-under frequency elements - 81U and 81O............................................................................................62

Frequency rate of change - 81R..................................................................................................................................................................64

4.5 CONTROL AND MONITORING....................................................................................................................................................................... 70

Logic block (Block1)..................................................................................................................................................................................... 70

Remote tripping .............................................................................................................................................................................................72

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

Circuit breaker supervision .........................................................................................................................................................................77

Oscillography ............................................................................................................................................................................................... 78

5 MEASURES, LOGIC STATES AND COUNTERS 79

Measures....................................................................................................................................................................................................... 79

Protection ...................................................................................................................................................................................................... 79

Delayed inputs .............................................................................................................................................................................................. 79

Internal states............................................................................................................................................................................................... 79

Counters......................................................................................................................................................................................................... 79

Self test .......................................................................................................................................................................................................... 80

Fault recording - SFR................................................................................................................................................................................... 80

Event recording - SER...................................................................................................................................................................................81

Oscillography - DFR ......................................................................................................................................................................................81

6 INSTALLATION 83

6.1 PACKAGING...................................................................................................................................................................................................... 83

6.2 MOUNTING....................................................................................................................................................................................................... 83

6.3 ELECTRICAL CONNECTIONS ..........................................................................................................................................................................87

6.4 LED ALLOCATION............................................................................................................................................................................................. 93

6.5 FINAL OPERATIONS ........................................................................................................................................................................................ 93

7 PROGRAMMING AND SETTINGS 94

7.1 SW THYSETTER.................................................................................................................................................................................................94

7.2 MMI (Man Machine Interface) ......................................................................................................................................................................95

7.3 MENU TREE....................................................................................................................................................................................................... 98

7.4 MAINTENANCE...............................................................................................................................................................................................102

7.5 REPAIR..............................................................................................................................................................................................................102

7.6 PACKAGING.....................................................................................................................................................................................................102

8 APPENDIX 103

8.1 APPENDIX A1 - I/O DIAGRAM..................................................................................................................................................................... 103

8.2 APPENDIX A2 - INTERFACES........................................................................................................................................................................104

8.3 APPENDIX A3 - PROTECTIVE FUNCTIONS.................................................................................................................................................105

8.4 APPENDIX A4 - CONNECTION DIAGRAMS ...............................................................................................................................................106

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4NV021 - Manual - 08 - 2012

8.5 APPENDIX B - DIMENSIONS........................................................................................................................................................................107

8.6 APPENDIX C - SETTING TABLE................................................................................................................................................................... 108

8.7 APPENDIX D - REVISION HISTORY .............................................................................................................................................................145

8.8 APPENDIX E - EC DECLARATION OF CONFORMITY .................................................................................................................................146

INTRODUCTION 5

NV021 - Manual - 08 - 2012

1 INTRODUCTION

Scope and liability

This document describes the functions, the technical data of NV021 devices; instructions for mount-

ing, setting and commissioning are included.

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 NV021 devices with ﬁrmware release 2.70 and following.

Conformity

The product complies with the CEE directives:

EMC Council Directives 2004/108/EC

Low voltage Directives 2006/95/EC

Technical support

Contact: THYTRONIC technical service www.thytronic.it

TAll right reserved; It is forbidden to copy, modify or store material (document and sw) protected by

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 (“War-

ranty 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 (front panel, connectors).

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.

—

•

—

•

—

DANGER Death, severe personal injury or substantial property damage will 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.

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

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.

6NV021 - Manual - 08 - 2012 INTRODUCTION

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:

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

Environment

The NV10 device must be employed according to the environment conditions shown (see technical

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.: 27= ANSI code concerning the undervoltage element.

Following text formats are used:

The ThySetter[1] menu:

Undervoltage - 27

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

U> element

Deﬁnite time

U>def

The display messages (MMI) are shown as:

NV10

Notes are highlighted with cursive letters inside colored bar

Note: Useful description note

Glossary/definitions

27 Undervoltage ANSI code

27V1 Positive sequence undervoltage ANSI code

59 Overvoltage ANSI code

59V2 Negative sequence overvoltage ANSI code

59Uavg Ten minutes Overvoltage

81O Overfrequency ANSI code

81U Underfrequency ANSI code

81R Frequency rate of change ANSI code

74TCS Trip Circuit Supervision

BF Breaker Failure

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

52 or 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 posi-

tion (Breaker failure and/or CB diagnostic functions). (52a open = CB

open)

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

breaker (52b open = CB closed)

K1...K6...K10 Output relays

Note 1 The graphic interface and the operation of the ThySetter software are described in the relative chapters

—

•

—

NV021#UA2TE00

UAUX 110-230 Vac/dc

400V

5NV021#UA2TE00

UAUX 110-230 Vac/dc

400V

INTRODUCTION 7

NV021 - Manual - 08 - 2012

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

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

quantity(ies) (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 critical impulse time.

The declared values for the overshoot time are applicable with the

lower setting value of the operation time.

MMI (Man Machine Interface) Operator front panel

ThySetter Setting and monitoring software

Log ﬁle A text ﬁle that lists actions that have occurred (ThySetter).

J2SE Java Platform Standard Edition

Subnet Mask (Ethernet nomenclature)

Sw Software

Fw Firmware

Upgrade Firmware upgrade

XML eXtensible Markup Language

IEC 61850 Substation IEC protocol

8NV021 - Manual - 08 - 2012 INTRODUCTION

Symbols-en.ai

Symbols

U>> Start

U>> BF_OUT

IPh Block2

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

(e.g.U>> 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 59 element)

It is not available for reading (missing arrow)

AND and NAND logic gates

OR and NOR logic gates

Limit block (U>> threshold).

Computation block (Max phase voltage)

Threshold setting (e.g. pickup

U>>)

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)

UL3

Max[IL1 ,IL2 ,IL3 ]

UL2

UL1

tON tON tON tON

RESET

INPUT

OUTPUT

tOFF

INPUT

OUTPUT

tON tON tON

INPUT

OUTPUT

tON

& &

≥1≥1

EXOR logic gate

tOFF

U>>

UU ≥

U>>

tON

RESET

INTRODUCTION 9

NV021 - Manual - 08 - 2012

Symbols1-en.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)

10 NV021 - Manual - 08 - 2012 GENERAL

2 GENERAL

Preface

The relay type NV021 can be typically used in HV, MV and LV distribution systems, on transformers

or for electrical machines.

It can be used for system decoupling, load shedding and loss of main (islanding) protection.

In addition to the main protection element, the breaker failure (BF) , Trip Circuit Supervision (TCS) and

programmable logic (PLC) are also provided are also provided

Setting, programming and reading operations must be effected by means of Personal Computer with

ThySetter software or by means of remote communication interface (RS485 bus and Ethernet net-

work); all operations must be performed through MMI if enabled.

According to the hardware conﬁgurations, the NV021 protection relay can be shipped in various

case styles depending on the required mounting options:

Flush.

Projecting mounting.

Rack.

With separate operator panel.

Other options are:

Auxiliary power supply operating range.

Communication protocols.

Input circuits for direct connection

Three voltages (line-to-line) with nominal voltages programmable in the range 200...520 V (UR = 400V)

are available.

—

•

—

74TCS BF

27 27V1

81O 81R81U

59V2

DDI

59Uavg

PROTECTION RELAY

NV021

- Protective & control functions

27 Phase undervoltage

27V1 Positive sequence undervoltage

59 Phase overvoltage

59V2 Negative sequence overvoltage

59Uavg Average overvoltage

81O Overfrequency

81U Underfrequency

81R Frequency rate of change

BF Circuit breaker failure

74TCS Trip circuit supervision

ARF Automatic reclosure

(optional for pv plants)

74TCS BF

27 27V1

81O 81R81U

59V2

DDI

59Uavg

PROTECTION RELAY

NV021

- Protective & control functions

27 Phase undervoltage

27V1 Positive sequence undervoltage

59 Phase overvoltage

59V2 Negative sequence overvoltage

59Uavg Average overvoltage

81O Overfrequency

81U Underfrequency

81R Frequency rate of change

BF Circuit breaker failure

74TCS Trip circuit supervision

ARF Automatic reclosure

(optional for pv plants)

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