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FUNCTION CHARACTERISTICS

NC020 - Manual - 05 - 2022

—

Neutral unbalance current - 46N

Preface

One alarm and two operation thresholds, independently adjustable with adjustable operating times.

Operation and settings

The unbalance current

is used with:

• Fundamental component of the neutral unbalance current measured on the double star connection

as module.

• Displacement of the unbalance current

, positive for lagging current compared with

current

N PHI

= (

∠

) as phase displacement.

To compensate the inherent unbalance in a un-faulted three phase capacitor bank, a suitable auto-

matic adjustment is provided.

The compensation values (

NC MOD calib

NC PHI calib

) may be acquired when no fault are present on-

duty bank capacitors by executing the the command

INC Comp exe

available inside the

Com-

mands \ Compensation \ Set compensation

menu.

[1]

The relay internally measures the real unbalanced current when fault are present; the compen-

sated unbalance current phasor is calculated by protection relay by the vector difference



N PHI

- I

NC MOD calib



N PHI calib

where:

• I

is the RMS value of fundamental component of the unbalance current

• I

N PHI

is the displacement of the unbalance neutral current with respect to the

phasor

• I

NC MOD calib

is the module of the compensation unbalance neutral current

• I

NC PHI calib

is the displacement of the compensation unbalance neutral current with respect to the

phasor

The calibration parameters (

NC MOD calib

module and

N PHI calib

phase) are available inside the

Read

\ IN Compensation

menu.

If the unbalance current

exceeds the setting threshold a start is issued. After expiry of the as-

sociated operate time a trip command is issued; if instead the current drops below the threshold, the

element is restored.
All the elements (

N>AL

N>>

) have definite time characteristic.

All overcurrent elements can be enabled or disabled by setting the relative start and/or trip output to

a selectable relay inside the

Set \ Relays

menu.

Note 1 Compensation is possible only if the following two conditions are satisfied:

- the IL1 phase current is greater than 0.1 In

- the RMS value of fundamental component of the unbalance current (

) is less than 0.5

t-int-F46N.ai

def

ALdef

def

ALdef

TRIP

General operation time characteristic for the neutral unbalance elements - 46N

Compensation 46N

all-F46N.ai

General logic diagram of the unbalance current elements - 46N

IN>AL Element

Start IN>

Trip IN>

tIN>

ALdef

INCLP>

ALdef

IN>

ALdef

INCLP>

tINCLP>

IN> Element

Start IN>

Trip IN>

tIN>

def

INCLP>

def

IN>

def

INCLP>

tINCLP>

IN>> Element

Start IN>

Trip IN>

tIN>>

def

INCLP>>

def

IN>>

def

INCLP>>

tINCLP>>

Содержание NC020

Страница 1: ...NC020 Manual 05 2022 MANUAL NC020 FILTER CAPACITOR BANK PROTECTION RELAY ...

Страница 2: ...4 Auxiliary power supply Uaux 14 Phase current input circuits 14 Unbalance neutral current input circuit 14 Binary input circuits 14 3 3 OUTPUT CIRCUITS 14 Output relays 14 3 4 MMI 15 3 5 COMMUNICATION INTERFACES 15 Local port 15 Remote port 15 3 6 GENERAL SETTINGS 15 3 7 PROTECTIVE ELEMENTS 15 Discharge time TD 15 Undercurrent 37 15 Neutral unbalance overcurrent 46N 15 Phase overcurrent 50 51 RMS...

Страница 3: ...ND COUNTERS 51 Measures 51 Circuit breaker 51 Counters 51 Fault recording SFR 51 Event recording Events 52 Info 52 Protections trip 52 Self test 52 Oscillography DFR 53 6 INSTALLATION 55 6 1 PACKAGING 55 6 2 MOUNTING 55 6 3 ELECTRICAL CONNECTIONS 57 6 4 NOMINAL CURRENT In AND IEn SETTING 60 6 5 LED ALLOCATION 62 6 6 FINAL OPERATIONS 62 7 PROGRAMMING AND SETTINGS 63 7 1 SW ThyVisor 63 7 2 MMI Man M...

Страница 4: ...type VI 77 Phase overcurrent 50 51 Extremely inverse time curve ANSI IEEE type EI 78 8 3 APPENDIX A3 CAPACITOR curves 79 Mathematical formula 79 RMS phase overcurrent 50 51 RMS CAPACITOR curve 80 RMS phase overcurrent 50 51 fundamental CAPACITOR curve 81 8 4 APPENDIX B1 I O Diagram 82 8 5 APPENDIX B2 Interfaces 83 8 6 APPENDIX B3 Connection diagrams 84 8 7 APPENDIX C Dimensions 85 8 8 APPENDIX D E...

Страница 5: ...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 b...

Страница 6: ...ers inside colored bar Note Useful description note Glossary definitions In Relay phase rated current Inp Phase CT primary rated current INn Relay neutral rated current INnp Phase CT neutral rated current INC Compensation neutral current IEC Calculated residual rated current V1 V2 V3 Calculated peak voltages 46N Neutral unbalance overcurrent ANSI code 50 51 Phase overcurrent ANSI code 50 51 RMS Ph...

Страница 7: ... 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 operate...

Страница 8: ...e 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 ThyVisor MMI Switch ON delay timer with reset tON delay ON delay timer without reset tON delay OFF delay timer dropout ...

Страница 9: ...P tDROP tDROP Minimum pulse width operation for output relays tTR tTR t tTR INPUT OUTPUT tTR 0 T tTR t tTR INPUT OUTPUT Latched operating mode for output relays and LEDs Pulse operating mode for output relays t INPUT OUTPUT Latched tTR T 0 RESET OFF delay timer dropout with reset tDROP delay ...

Страница 10: ...mer in order to develop the appropriate input current for the unbalance protection Double Wye ungrounded A suitable compensation method is provided to compensate the inherent unbalance neutral cur rent Protection 50 51 RMS is based on RMS value measurement of the three phase currents fundamental and harmonics up to the 23th The peak capacitor voltage is calculated fundamental frequency and harmoni...

Страница 11: ...lizing circuit having a very wide working range and a very small power dissipation Nominal frequency 50 or 60 Hz The most significant operating features are Programming of operating modes and parameters by means of the front keys and alphanumeric display with a programming procedure based on carrying out guided selections and on explicit and immediate signalling of the operations being performed s...

Страница 12: ... for measuring relays and protection equipment EN 60255 26 Apparati di automazione e controllo per centrali e stazioni elettriche Compatibilità elettromagnetica Immunità ENEL REMC 02 Normativa di compatibilità elettromeccanica per apparati e sistemi ENEL REMC 01 Voltage dip and interruption Reference standards EN 61000 4 29 IEC 60255 22 11 Voltage dips short interruptions and voltage variations on...

Страница 13: ...30 A m Damped oscillatory wave 1 MHz 30 A m Emission Reference standards EN 60255 25 IEC 60255 25 EN 61000 6 4 IEC 61000 6 4 EN 55011 CISPR 11 Electromagnetic emission tests Conducted emission auxiliary power supply 0 15 0 5 MHz 79 dB mV Conducted emission auxiliary power supply 0 5 30 MHz 73 dB mV Radiated emission 30 230 MHz 40 dB mV m Radiated emission 230 1000 MHz 47 dB mV m Mechanical tests R...

Страница 14: ... current input circuit Relay nominal residual current IEn 1 A or 5 A selectable by DIP switch Permanent overload 25 A Thermal overload 1 s 500 A Dynamic overload half cycle 1250 A Rated consumption 0 006 VA with IEn 1 A 0 12 VA with IEn 5 A Binary input circuits Quantity 3 Type optocoupler Operative range 24 265 V Min activation voltage UDIGmin 18 V Max consumption energized 3 mA 3 3 OUTPUT CIRCUI...

Страница 15: ... 0 01 s 10 0 99 9 s step 0 1 s 100 600 s step 1 s Neutral unbalance overcurrent 46N 5 Compensation 6 Compensation current INC MOD calib 0 01 0 50 INn step 0 01 INn Compensation angle INC PHI calib 0 359 step 1 Nota 1 The O and I keys are enabled for CB opening and closing Note 2 The rated current settings doesn t concern the 50 51 protection elements they must agree with nominal primary current fo...

Страница 16: ...n step 0 01 INn IN def within CLP INCLP def 0 01 2 00 INn step 0 01 INn IN def Operating time tN def 0 03 60 0 s 0 03 9 99 s step 0 01 s 10 0 60 0 s step 0 1 s Phase overcurrent 50 51 RMS I Element I Curve type I Curve DEFINITE IEC BS A B C ANSI IEEE MI VI EI CAPACITOR 2 I CLP activation time tCLP 0 00 100 0 s 0 00 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s I Reset time delay tI RES 0 00 100 0 s 0...

Страница 17: ... 0 60 0 s step 0 1 s I Element I CLP activation time tCLP 0 00 100 0 s 0 00 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s I Reset time delay tI RES 0 00 100 0 s 0 00 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s Definite time 50 51 Third threshold definite time I def 0 100 20 0 In 0 100 0 999 In step 0 001 In 1 00 9 99 In step 0 01 In 10 0 20 0 In step 0 1 In I def Operating time t def 0 03 10 00 s step...

Страница 18: ...0 00 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s U Reset time delay tU RES 0 600 s Definite time 59H First threshold definite time U def 0 20 10 00 Un U def within CLP UCLP def 0 20 10 00 Un U def Operating time tU def 0 03 600 s 0 03 9 99 s step 0 01 s 10 0 99 9 s step 0 1 s 100 600 s step 1 s U Element U CLP activation time tUCLP 0 00 100 0 s 0 00 9 99 s step 0 01 s 10 0 100 0 s step 0 1 s U Rese...

Страница 19: ...nt 3 IEC Fundamental RMS of compensated neutral current 4 INC Displacement angle of neutral current IN with respect to IL1 IN PHI Capacitor peak voltages V1 V2 V3 Discharge timer TD Displacement angle of calibrated neutral current 5 IN PHI calib Fundamental RMS of calibrated neutral current 6 INC MOD calib Note 1 T number of power cycles Example with setting T 4 the pre trigger is 80 ms with f 50 ...

Страница 20: ... suited to the input range 24 230 V The circuit provides stabilized voltages of 5 V and 5 V required for the analogue measurement and 3 3 V for supplying the digital circuits The circuit board additionally comprises INPUT CIRCUITS Three binary input circuits The logical input circuits and the block circuits include photo couplers which provide for galvanic separation OUTPUT CIRCUITS Four output re...

Страница 21: ... such as transient currents with overlapping exponential which typically appear during faults The circuit board also houses the output relays with the corresponding command and control cir cuits communication circuits buttons LCD display LEDs and the key switch CPU A 32 bit DSP is provided The following are envisaged Real Time Clock circuits with oscillator and super capacitor RS232 communication ...

Страница 22: ...nd control functions The main modules are diagnostic function input management logical inputs protective functions event recording output management output relays LEDs Each element Kernel Drivers and Application may in turn be split into modules Base protocol kernel The module known as the Basic Protocol BP manages the service communication between the kernel and the other modules through the comm...

Страница 23: ...irectly by the application e g counters Self test application This function cyclically monitors the operation of the main hardware and software functions without affecting the process cycle with any significant delays In particular the functions monitored are the following the reference voltage levels output relay coil continuity the program flow control by monitoring the execution times and stack...

Страница 24: ... are computed for protection monitoring and meter ing purposes Samples are processed by means DFT Discrete Fourier Transform algorithm and the phase and amplitude of fundamental are computed Phase currents IL1 IL2 IL3 RMS phase currents including up to twenty third harmonic IL1RMS IL2RMS IL3RMS Unbalanced neutral current RMS value of the fundamental component IN sensori ai Three phase current inpu...

Страница 25: ...esidual current RMS value of the fundamental component IEC Displacement angle of the IN neutral current respect the IL1 phase current φN IN PHI Peak voltages V1 V2 V3 IECOMP ai In ACQUISITION iL1 iL2 iL3 iEC DFT CT IEC Fase ai ϕN IN IL1 ϕNC ϕN ϕC ϕN IN PHI ϕNC PhiNC IN INC IC IL1 V1V2V3 ai Un ACQUISITION iL1 iL2 iL3 V1 V2 V3 DFT 23 n n pk 1 3 I C f n V 1 2 1 π ...

Страница 26: ...5 TD State Breaker failure BF Cold Load Pickup CLP PROTECTION Undercurrent 37 Discharge timer TD Neutral unbalance current 46N RMS phase overcurrent 50 51 Fundamental frequency phase overcurrent 50 51 Residual overcurrent 50N 51N Peak overvoltage 59H Breaker failure BF CONTROL MONITORING Circuit Breaker supervision Self test EVENT RECORDING SER Event 0 Event 1 Event 2 Event Event 49 FAULT RECORDIN...

Страница 27: ... and 52b The CB position can be acquired by means of binary inputs connected to the auxiliary contacts the information is used to acquire the CB position open closed fault Remote Reset The input activation drives an expressly programmed output relay CB position CB diagnostic 52a 52 52b UAUX UAUX IN2 IN1 Binary input allocation for CB state acquisition Remote reset ai Remote reset UAUX UAUX Binary ...

Страница 28: ...he trip condition it stays ON until a reset command is issued RESET key ThyVisor or commu nication command It is advisable to make sure that the output contact technical data are suitable for load Nominal current breaking capacity make current switching voltage Matching every output relay to any protective element is freely programmable inside the Setpoints submenus according a tripping matrix str...

Страница 29: ...e U U U elements 1 One red LED 4 no latched tagged for binary input state visualization 52b CB position One red LED 5 no latched tagged for Discharge time state TD 1 FUNCTIONS LED START TRIP 1 2 3 4 5 Start IN AL Start IN AL Trip IN AL Trip IN AL Start IN Start IN Trip IN Trip IN Start IN Start IN Trip IN Trip IN Start I Start I Trip I Trip I Start I Start I Trip I Trip I Start I Start I Trip I Tr...

Страница 30: ...Computer an USB RS232 converter must be employed 1 The serial port is the simplest access for setting by means the ThyVisor software RS485 The ModBus RTU is a serial communications protocol It is a de facto standard communications pro tocol in industry and is now the most commonly available means of connecting industrial electronic devices also inside electric utilities and substation Note 1 After...

Страница 31: ...sure of the phase currents when the Primary measurement read ing mode is selected It must be programmed to the same value of the phase CT primary nominal current Example The phase CT primary current Inp must be set as Inp 500 A Relay unbalance CT primary nominal current INnp This parameter affects the measure of the neutral unbalance current when the primary measure ment reading mode is selected I...

Страница 32: ...er expiry of the associated operate time a command is issued to start the discharge timer TD if instead the currents exceed the threshold the element is restored The start and trip logic of the second element I may be selected OR or AND With OR selection a start is issued when at least one of the three currents goes down the adjust able threshold START with AND selection a start is issued when all...

Страница 33: ...CITOR DISCHARGE IN PROGRESS xxx s is displayed where xxxx is the actual value of remaining discharge time in seconds the initial value is the cor responding threshold set by TD decreased with resolution of 1 s to 0 When the discharge timer expires the display message is automatically removed The actual value of remaining discharge time can be cleared and the timer count of discharging TD forced at...

Страница 34: ...MOD calib is the module of the compensation unbalance neutral current INC PHI calib is the displacement of the compensation unbalance neutral current with respect to the IL1 phasor The calibration parameters INC MOD calib module and IN PHI calib phase are available inside the Read IN Compensation menu If the unbalance current INC exceeds the setting threshold a start is issued After expiry of the ...

Страница 35: ...rs inside the Set 46N IN AL Element IN Element IN Element Setpoints menus whereas the operating thresholds within the CLP may be adjusted inside the Set 46N IN AL Element IN Element IN Element IN AL Definite IN Definite IN Definite menus For both operating modes the CLP Activation time parameters tINCLP AL tINCLP tINCLP may be adjusted inside the Set 46N IN AL Element IN Element IN Element IN AL S...

Страница 36: ...K LED 2 IN ST L IN ST K INC IN def IN def INC INCLP def tIN def Neutral unbalance current 46N First element logic diagram IN 46N S2 ai INC RESET tIN def 0 T Start IN Trip IN CB State ON Enable IN unbalance current element Pickup within CLP Pickup outside CLP T 0 tINCLP INCLP INCLP def tINCLP TRIPPING M ATRIX LED REL AYS A B C A 1 A 0 or OFF Output tINCLP IN Enable tINCLP CB State CB OPEN CB CLOSED...

Страница 37: ... IEEE type VI t t inv 3 922 IRMS I inv 2 1 0 098 Extremely Inverse ANSI IEEE type EI t t inv 5 64 IRMS I inv 2 1 0 024 CAPACITOR t t inv 50000 1 1 IRMS I inv 17 1 0 1 Where t operate time IRMS RMS input current I inv threshold setting tI inv operate time setting For all inverse time characteristics following data applies Asymptotic reference value minimum pickup value 1 1 I inv Minimum operate tim...

Страница 38: ...CLP may be adjusted inside the Set 50 51 RMS I Element I Setpoint menu For both operating modes the CLP Activation time parameters tCLP may be adjusted inside the Set 50 51 RMS I Element I Setpoint menu Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure BF menu Fun_50 51 RMS ai IL1RMS IL2RMS IL3RMS tI RES T 0 RESET tI 0 T 1 1 tI def tI in...

Страница 39: ... 02 1 0 023 Very Inverse ANSI IEEE type VI t t inv 3 922 I I inv 2 1 0 098 Extremely Inverse ANSI IEEE type EI t t inv 5 64 I I inv 2 1 0 024 Where t operate time I inv threshold setting t inv operate time setting For all inverse time characteristics following data applies Asymptotic reference value minimum pickup value 1 1 I inv Minimum operate time 0 1 s Range where the equation is valid 1 1 1 I...

Страница 40: ...ay be adjusted inside the Set 50 51 Funda mental I Element I Element I Definite I Definite or I Inverse I Inverse menus For both operating modes the CLP Activation time parameters tCLP tCLP may be ad justed inside the Set 50 51 Fundamental I Element I Element I Setpoint I Setpoint menus Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure B...

Страница 41: ...P Mode ICLP def tCLP ON Enable BF Enable towards BF logic I BF Trip I TRIPPING M ATRIX LED REL AYS A B C A 1 A 0 or OFF Output tCLP I Enable tCLP CB State CB OPEN CB CLOSED CB OPEN Output tCLP t 0 1 s HIGH THRESHOLD BLOCK LOW THRESHOLD UNBLOCK HIGH THRESHOLD BLOCK A ON Change setting B OFF C ON Element blocking I TR K LED 1 I ST L I ST K IL1 I def IL1 ICLP I def Fundamental phase overcurrent 50 51...

Страница 42: ...n Cold Load Pick up is enabled for element blocking the selected threshold may be blocked for an adjustable time interval starting from the circuit breaker closure This operating mode may be select by setting ON Blocking the IECLP and or IECLP param eters inside the Set 50N 51N IE Element IE Element IE Setpoints IE Setpoints menus If the CLP function Cold Load Pick up is enabled for threshold chan...

Страница 43: ...blocking IE TR K LED 2 IE ST L IE ST K IEC IE def IEC IECLP def IE def Residual overcurrent 50N 51N IE element logic diagram Fun_50 51 S3 ai IEC tIE RES T 0 RESET tIE def 0 T tIE def tIE RES Start IE Trip IE CB State ON Enable IE overcurrent element Pickup within CLP Pickup outside CLP T 0 tIECLP IECLP Mode IECLP def tIECLP ON Enable BF Enable towards BF logic IE BF Trip IE TRIPPING M ATRIX LED RE...

Страница 44: ...r Trip U outputs are set for BF Enable The outputs are available inside the Set Breaker failure menu 1 Cold load pickup If the CLP function Cold Load Pick up is enabled for element blocking the selected threshold may be blocked for an adjustable time interval starting from the circuit breaker closure This operating mode may be select by setting ON Blocking the UCLP UCLP and or UCLP parameters insi...

Страница 45: ... Mode UCLP def tUCLP ON Enable BF Enable towards BF logic U BF Trip U TRIPPING M ATRIX LED REL AYS A B C A 1 A 0 or OFF Output tIECLP U Enable tUCLP CB State CB OPEN CB CLOSED CB OPEN Output tUCLP t 0 1 s HIGH THRESHOLD BLOCK LOW THRESHOLD UNBLOCK HIGH THRESHOLD BLOCK A ON Change setting B OFF C ON Element blocking U TR K LED 3 U ST L U ST K V1 U def V1 UCLP def U def Peak overvoltage 59H U elemen...

Страница 46: ... Mode UCLP def tUCLP ON Enable BF Enable towards BF logic U BF Trip U TRIPPING M ATRIX LED REL AYS A B C A 1 A 0 or OFF Output tIECLP U Enable tUCLP CB State CB OPEN CB CLOSED CB OPEN Output tUCLP t 0 1 s HIGH THRESHOLD BLOCK LOW THRESHOLD UNBLOCK HIGH THRESHOLD BLOCK A ON Change setting B OFF C ON Element blocking U TR K LED 3 U ST L U ST K V1 U def V1 UCLP def U def Peak overvoltage 59H U elemen...

Страница 47: ... Mode UCLP def tUCLP ON Enable BF Enable towards BF logic U BF Trip U TRIPPING M ATRIX LED REL AYS A B C A 1 A 0 or OFF Output tUCLP U Enable tUCLP CB State CB OPEN CB CLOSED CB OPEN Output tUCLP t 0 1 s HIGH THRESHOLD BLOCK LOW THRESHOLD UNBLOCK HIGH THRESHOLD BLOCK A ON Change setting B OFF C ON Element blocking U TR K LED 3 U ST L U ST K V1 U def V1 UCLP def U def Peak overvoltage 59H U element...

Страница 48: ...nditions are held along the set operate time tBF the BF element trips at deadline vice versa the timer is cleared and the function is restored To the purpose to restore the BF element as quickly as possible with start of the same protection see A condition additionally to the trip of some internal protections their starts are required start reset is faster than trip reset The element may be enable...

Страница 49: ... wrong congruity of the auxiliary contact is detected in run time mode 52a and 52b by means of two binary inputs Operation and settings 52a is the auxiliary contact in the breaker that is in the same position as the breaker 52a open CB open It is assigned to the IN2 binary input 52b is the auxiliary contact in the breaker that is in the opposite position as the breaker 52b open CB closed It is ass...

Страница 50: ...meters available inside the Oscillography Setting menu are user programmable Pre trigger time With setting of the Trigger parameter General start or General trip the recording starts with state change of any protection elements With setting of the Trigger parameter Manual the recording starts with manual command Thy Visor With setting of the Trigger parameter K1 K4 the recording starts with state ...

Страница 51: ...element On Off Start IE element On Off Start IN AL element On Off Start IN element On Off Start IN element On Off Start U element On Off Start U element On Off Start U element On Off Start I element On Off Trip element On Off Trip I element On Off Trip I element On Off Trip IE element On Off Trip IE element On Off Trip IN AL element On Off Trip IN element On Off Trip IN element On Off Trip U eleme...

Страница 52: ...ice continues to function within the possible limits with the protective devices activated MAJOR ANOMALY Operation of the device may be corrected by the operator by resetting the initial default configuration and hence the desired settings FATAL ANOMALY All logic and protective functions are inoperative and the relay must be returned to the factory The internal self test function is capable of det...

Страница 53: ...ted channels Example 1 With the following setting Analog channel 1 iL1 Analog channel 2 iL2 Analog channel 3 iL3 Analog channel 4 iN Digital channel K1 Pre trigger 1 T 20 ms the stored record length of the two records with f 50 Hz is 240 ms Example 2 With the following setting Analog channel 1 iL1 Analog channel 2 Analog channel 3 Analog channel 4 Digital channel K1 Pre trigger 1 T 20 ms the store...

Страница 54: ...MEASURES LOGIC STATES AND COUNTERS 54 NC020 Manual 05 2022 oscillo phase ai Fault record Display example ...

Страница 55: ... fitted with special fastening brackets is mounted on the front of electric control board previously drilled as indicated in the drawing In case of side by side mounting of several relays the minimum drilling distance is determined by the front dimensions indicated in the overall dimensions drawing increased by 3 mm to ensure an adequate tolerance and gasket space between adjacent relays The depth...

Страница 56: ...8D the MAR adapter is required available on request To allow opening of the keyboard door a one unit space must be provided when several rack are overlapping mounted Flush mount1 ai Four screws Rack mount ai Rack mounting 177 4U 101 6 482 6 465 ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ON 4 1 3 2 5 TRIP START ...

Страница 57: ...gs suitable for M4 screws and an insulating panel covering the terminals may be mounted for safety purposes Earth A protective ground connection is required which must be connected to the suitable screw with a separate lead of at least 2 5 mm2 the connection from A21 or a22 terminal and the ground srew is also required 1 Note 1 The A21 and A22 terminal are link together inside the relay Devices mu...

Страница 58: ...rrent of the line CT expressed in A S cross sectional area of the current conductors expressed in mm2 It is recommended that cabling of a suitable thickness be used in order to limit wear of the CT sec ondary circuits Binary inputs The dry input circuits despite being galvanically isolated must preferably be supplied with the same auxiliary voltage of the control panel The inputs are polarity free...

Страница 59: ...RS485 line control unit and on the NA016 device placed at the furthest point connecting the specially provided resistor termination can be made by means a jumper between the E1 E2 terminals Termination resistors allow adjusting the impedance of the line reducing the influence of the induc tive components of the same which might compromise good communication serial1 sch ai L10041 Female connector s...

Страница 60: ...e to not disconnect the flat cable Avoid touching the printed circuit and connections 1 Note 1 There are components present which are sensitive to electrostatic discharge When the module is removed it is important to pay particular attention to avoid any accidental contact with the internal components In order to avoid the static electricity accumulated in the human body from causing damage it is ...

Страница 61: ... number on the printed circuit board not considering the numbers on the component Dip swithes position Dip switch localization concerning the nominal current setting inside the front board Default settings In 5 A INn 5 A Settings In 5 A INn 1 A Settings In 1 A INn 1 A Settings In 1 A INn 5 A 1 A 5 A ON IL1 IL3 IL2 IN 1 A 5 A ON IL1 IL3 IL2 IN 1 A 5 A ON IL1 IL3 IL2 IN 1 A 5 A ON IL1 IL3 IL2 IN 1 2...

Страница 62: ...s advisable to check that The auxiliary voltage in the panel falls within the operative range of relays The rated current of the line CT s corresponds to the settings of relay All wirings are correct All screws are tightly screwed Start TD TD timer expired CB OPEN 52b 50 51 I I I elements 59H U U U elements 46N 50N 51N IN AL IN IN IE IE elements Trip Open CB Close CB ...

Страница 63: ...yVisor installation The latest release of ThyVisor can be downloaded free of charge from the www thytronic it site Products Software 1 ThyVisor use Please refer to ThyVisor user manual for detailed instructions The document is available on www thytronic it Product Sotware ThyVisor Download area Note 1 Starting from the 3 5 9 release it is necessary to download and install not only the application ...

Страница 64: ...lighted and possible faults blink lighted The display backlight is automatically activated when any key switch is set By means of the Up or Down buttons it is possible to cyclically browse through the menu options READ SET COMMUNICATION TEST Having identified the sub menu of interest it is possible to gain access by using the Right button and then analogously run through the relevant options by us...

Страница 65: ...n in progress status is highlighted by the symbol E flashing in the upper right area of the display Change the parameter by means theUp orDown keys the message K1 Logic Energized is displayed Press the Enter key acceptance of the change is indicated by the disappearance of the flashing E to be replaced by the symbol Press the Down key the message K1 mode No latched is displayed Press the Enter key...

Страница 66: ...et Inside the Reset menu the clearing of counters Reset counters LEDs and relays Reset alarm may be operated DEFAULT Option Available inside the Option menu are the configuration parameter reset Default commands Set default PAR Set default REE In case of any anomalies detected by the self test function where configuration data has become corrupted it is possible to restore the factory default sett...

Страница 67: ...Position Closed Self test Self test None Counter ST I 0 Counter ST I 0 Counter ST I 0 Counter ST IE 0 Counter ST IE 0 Counter ST IN AL 0 Counter ST IN 0 Counter ST IN 0 Counter ST U 0 Counter ST U 0 Counter ST U 0 Counter ST I 0 Counter TR I 0 Counter TR I 0 Counter TR I 0 Counter TR IE 0 Counter TR IE 0 Counter TR IN AL 0 Counter TR IN 0 Counter TR IN 0 Counter TR U 0 Counter TR U 0 Counter TR U ...

Страница 68: ...0 In ICLP def 0 200 In tI def 0 20 s I def 0 100 In tI def 0 20 s I Curve DEFINITE I inv 0 100 In ICLP inv 0 200 In tI inv 0 20 s I Element 37 I Setpoint I Definite I def logic OR 50 51 Fundam I Element I Setpont I Definite I Inverse tCLP 0 50 s ICLP On Changing tI RES 0 00 s I def 0 100 In ICLP def 0 200 In tI def 0 20 s I Curve DEFINITE I inv 0 100 In ICLP inv 0 200 In tI inv 0 20 s I Element I ...

Страница 69: ...ef 0 20 s U Element U Setpont U Definite tUCLP 0 50 s UCLP On Changing U def 0 100 Un UCLP def 2 00 Un tU def 0 20 s tU RES 0 s U Element U Setpont U Definite tUCLP 0 50 s UCLP On Changing U def 0 100 Un UCLP def 2 00 Un tU def 0 20 s TD Discharge tD 6 s TD P37 enable ON Reset counters Reset alarm Reset discharge Breaker failure BF Enable Trip I tBF 0 50 s Circuit breaker CB check 52b Info Record ...

Страница 70: ...he current values referred to the nominal current of the current transformers as directly in primary amperes according to the preset value of CT s nominal primary current the same is done for the input voltages If connected to the central control unit all data available on the display can be checked and pro cessed thus performing a continuous check and maintenance 7 5 REPAIR No repair of possible ...

Страница 71: ...r IEC A curve Normal inverse α 1 for IEC B curve Very inverse α 2 for IEC C curve Extremely inverse For all inverse time characteristics following data applies Asymptotic reference value minimum pickup value 1 1 I inv Minimum operate time 0 1 s Range where the equation is valid 2 3 1 1 I I inv 20 If I pickup 2 5 In the upper limit is 50 In Note 1 Symbols are concerning the overcurrent element Note...

Страница 72: ... 3 BS142 type A F_51 IECA Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I RMS I inv I I inv 0 01 0 1 1 10 100 1000 10000 t s 10 s 5 s 60 s t inv t inv 1 s 0 5 s 0 2 s 0 1 s 0 02 s t t inv IRMS I inv 0 02 1 0 14 t t inv I I inv 0 02 1 0 14 Note match of operating and setting time takes place when I I inv 700 ...

Страница 73: ...255 3 BS142 type B F_51 IECB Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I I inv IRMS I inv 0 01 0 1 1 10 100 1000 10000 t s 10 s 60 s t inv t inv 5 s 1 s 0 5 s 0 2 s 0 02 s 0 1 s t t inv IRMS I inv 1 13 5 t t inv I I inv 1 13 5 Note match of operating and setting time takes place when I I inv 14 5 ...

Страница 74: ...255 3 BS142 type C F_51 IECC Char ai 1 1 2 3 4 5 6 7 8 9 10 20 IRMS I inv I I inv 0 01 0 1 1 10 100 1000 10000 100000 t s 10 s 60 s t inv t inv 5 s 1 s 0 5 s 0 2 s 0 02 s 0 1 s t t inv IRMS I inv 2 1 80 t t inv I I inv 2 1 80 Note match of operating and setting time takes place when I I inv 9 ...

Страница 75: ... ANSI IEEE Extremely inverse curve L coefficient L 0 023 for ANSI IEEE Moderately inverse curve L 0 098 for ANSI IEEE Very inverse curve L 0 024 for ANSI IEEE Extremely inverse curve For all inverse time characteristics following data applies Asymptotic reference value minimum pickup value 1 1 I inv Minimum operate time 0 1 s Range where the equation is valid 2 3 I I inv If I pickup 2 5 In the upp...

Страница 76: ... MI F_51 ANSIMI Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I I inv IRMS I inv 0 01 0 1 1 10 100 1000 10000 t s 10 s 60 s t inv t inv 5 s 1 s 0 02 s 0 2 s 0 1 s 0 5 s t t inv IRMS I inv 0 02 1 0 01 0 023 t t inv I I inv 0 02 1 0 01 0 023 Note match of operating and setting time takes place when IRMS I inv 1 664 ...

Страница 77: ...VI F_51 ANSIVI Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I I inv IRMS I inv 0 01 0 1 1 10 100 1000 10000 t s 10 s 60 s t inv t inv 5 s 1 s 0 5 s 0 2 s 0 1 s 0 02 s t t inv IRMS I inv 2 1 3 922 0 092 t t inv I I inv 2 1 3 922 0 092 Note match of operating and setting time takes place when IRMS I inv 2 306 ...

Страница 78: ...ype EI F_51 ANSIEI Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I I inv IRMS I inv 0 01 0 1 1 10 100 1000 10000 t s 10 s 60 s t inv t inv 5 s 0 5 s 1 s 0 2 s 0 1 s 0 02 s t t inv IRMS I inv 2 1 5 64 0 024 t t inv I I inv 2 1 5 64 0 024 Note match of operating and setting time takes place when IRMS I inv 2 789 ...

Страница 79: ...old setting For inverse time characteristics following data applies Asymptotic reference value minimum pickup value 1 1 I inv Minimum operate time 0 1 s Range where the equation is valid 1 I I inv If I pickup 2 5 In the upper limit is 50 In Note 1 When the input value is more than 20 times the set point the operate time is limited to the value corresponding to 20 times the set point t t inv 1 1 IR...

Страница 80: ...1RMS Capacitor Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I RMS I inv 0 01 0 1 1 10 100 1000 10000 100000 1000000 t s t t inv 1 1 IRMS I inv 17 1 0 1 50000 t inv 0 1 s t inv 0 02 s t inv 1 0 s t inv 10 s t inv 60 s Operating characteristic concerning the Phase overcurrent RMS element 50 51 RMS ...

Страница 81: ...ercurrent 50 51 fundamental CAPACITOR curve F_51 fond Capacitor Char ai 1 1 2 3 4 5 6 7 8 9 10 20 I I inv 0 01 0 1 1 10 100 1000 10000 100000 1000000 t s t t inv 1 1 I I inv 17 1 0 1 50000 t inv 0 1 s t inv 0 02 s t inv 1 0 s t inv 10 s t inv 60 s ...

Страница 82: ... NC020 C1 IL1 IL2 IL3 IN CURRENT INPUTS C2 C3 C4 C5 C6 C7 C8 RS232 FRONT PANEL A13 IN1 IN2 IN3 A14 A15 A16 A17 A18 OUTPUT RELAYS A4 A6 A5 K2 A2 A1 A3 K1 A11 A12 A10 K4 A9 A8 A7 K3 UAUX A19 A20 A22 A21 B E1 RS485 1 2 3 120Ω A Circuit Breaker Monitoring Remore Reset 1 DTR 2 GND 3 TXD 4 RXD 52b 52a ...

Страница 83: ...APPENDIX 83 NC020 Manual 05 2022 8 5 APPENDIX B2 Interfaces Interfaces ai NC020 RS232 FRONT PANEL A22 A21 B E1 RS485 1 2 3 120Ω A 1 DTR 2 GND 3 TXD 4 RXD ...

Страница 84: ...e they cannot be comprehensive for real applications For all diagrams the output contacts are shown in de energized state for standard reference NC020 SCH ai CIrcuit Breaker Monitoring Remote Reset L1 L2 L3 IN C7 C8 P2 P1 S1 S2 50 51 37 59H 50 51RMS 46N 50BF CB position 50N 51N C2 C1 C3 C4 C5 C6 P1 S1 S2 P2 IL1 IL2 IL3 A13 IN1 IN2 IN3 A14 A15 A16 A17 A18 NC020 ...

Страница 85: ...B6 B7 B8 C1 C2 C4 C3 C5 C6 C7 C8 E1 3 1 2 75 30 3 1 2 ON powered device and diagnostics OK START start of any element TRIP trip of any element LED 1 Trip of the I I I elements RMS or DFT LED 2 Trip of the 50N 46N elements LED 3 Trip of the 59H element LED 4 CB Open CB position LED 5 TD state NC020 xM000 In 1A 50 51 46N 50N 59 CB OPEN TD 5A UAUX 24 230 Vac dc INn 1A 5A 1 2 3 4 5 IDENTIFICATION LABE...

Страница 86: ...ective EMC Directive Reference of standards and or technical specifications applied for this declaration of conformity or parts thereof harmonized standards Reference n Issue Title EN 61010 1 EN 50263 EN 61000 6 4 EN 61000 6 2 2010 2000 2007 2011 2005 Safety requirements for electrical equipment for measurement control and laboratory use Electromagnetic compatibility EMC Product standard for measu...

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