Thytronic DMC3S User manual

DMC3S - Manual - 08 - 2021
DMC3S
MULTIFUNCTIONAL PROTECTION
AND CONTROL PANEL FOR PRIMARY
SUBSTATIONS
MANUAL
DV901
DV905
DV907
DV910
DV917
DV922
MV line
Translator
Coupler
Power factor
correction
HV line
TFN
EAC EAC
DV7203
Ethernet locale

2DMC3S - Manual - 08 - 2021
SUMMARY
1 GENERAL INFORMATION 5
Preface..............................................................................................................................................................................................................5
2 DESCRIPTION 5
Main Characteristics ......................................................................................................................................................................................5
Protection Functions.......................................................................................................................................................................................5
Control Functions.............................................................................................................................................................................................5
3 TECHNICAL CHARACTERISTICS 6
3.1 GENERAL INFORMATION 6
Mechanical characteristics ..........................................................................................................................................................................6
Electromagnetic compatibility (EMC)...........................................................................................................................................................6
Disturbance immunity tests...........................................................................................................................................................................6
Climate tests.....................................................................................................................................................................................................7
Mechanical tests.............................................................................................................................................................................................8
Insulation test...................................................................................................................................................................................................8
Reference specifications...............................................................................................................................................................................8
ENEL general standards and tables.............................................................................................................................................................8
Certifications....................................................................................................................................................................................................8
Environmental Condition ................................................................................................................................................................................8
3.2 INPUT CIRCUITS 9
Auxiliary circuit power U
aux ..........................................................................................................................................................................9
Amperometric phase inputs ..........................................................................................................................................................................9
Residual current amperometric inlet ...........................................................................................................................................................9
Voltmetric inputs..............................................................................................................................................................................................9
Residual voltage / Vsync voltage voltmetric input.....................................................................................................................................9
Digital inputs.....................................................................................................................................................................................................9
3.3 OUTPUT CIRCUITS 9
Final electromechanical relays.....................................................................................................................................................................9
Final solid state relays..................................................................................................................................................................................10
3.4 MMI 10
3.5 COMMUNICATIONS CIRCUITS 10
Local port........................................................................................................................................................................................................10
Connection 61850...........................................................................................................................................................................................10
Remote module connection.........................................................................................................................................................................10
3.6 PROTECTION AND CONTROL FUNCTIONS 11
3.6 NOMINAL VALUES 12
3.7 PROTECTION FUNCTIONS 12
Direct undervoltage - 27CC (80.s) ...............................................................................................................................................................12
Maximum directional active power 32P....................................................................................................................................................12
Negative sequence overcurrent - 46 .........................................................................................................................................................13
Overcurrent - 50/51........................................................................................................................................................................................14
Residual overcurrent - 50N/51N..................................................................................................................................................................15
Neutral overcurrent - 51N(E).......................................................................................................................................................................16
Residual emergency overcurrent - 51N(Eme) ..........................................................................................................................................17
Neutral current unbalance - 51(SQL).........................................................................................................................................................18
Overvoltage - 59.............................................................................................................................................................................................18
Residual overvoltage - 59N..........................................................................................................................................................................19
Residual emergency overcurrent - 59N(eme) ..........................................................................................................................................19
Maximum directional current - 67 ..............................................................................................................................................................20
Ground directional overcurrent - 67N........................................................................................................................................................22
EAC (Equilibratore Automatico di Carico) [ALB frequency (Automatic Load Balancer)]..................................................................25
Second harmonic restraint - 2ndh-REST...................................................................................................................................................25

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DMC3S - Manual - 08 - 2021
3.8 CONTROL FUNCTIONS 26
Synchrocheck relay - 25...............................................................................................................................................................................26
VT monitoring - 74TV.....................................................................................................................................................................................26
CT Monitoring - 74CT ....................................................................................................................................................................................26
Breaker failure - BF.......................................................................................................................................................................................26
Breaker coils control monitoring................................................................................................................................................................26
Opening command breaker diagnostics....................................................................................................................................................26
Closing command breaker diagnostics .....................................................................................................................................................26
Automatic reclosing - 79 ..............................................................................................................................................................................27
3.9 MEASUREMENTS 27
Precision (type tests)....................................................................................................................................................................................27
Measurements...............................................................................................................................................................................................27
4 FUNCTIONAL CHARACTERISTICS 30
4.1 CONFIGURABILITY 30
4.2 ADDITIONAL EXTERNAL MODULES 31
4.3 DESCRIPTION OF OPERATION 32
Measurement conventions..........................................................................................................................................................................32
Logical inputs.................................................................................................................................................................................................33
Output relays..................................................................................................................................................................................................34
Reset timers....................................................................................................................................................................................................37
Shrink time......................................................................................................................................................................................................37
Back-up Time .................................................................................................................................................................................................38
Direct undervoltage - 27CC..........................................................................................................................................................................39
Maximum directional active power - 32P..................................................................................................................................................40
Negative sequence overcurrent - 46 .........................................................................................................................................................42
Overcurrent - 50/51........................................................................................................................................................................................44
Residual overcurrent - 50N/51N..................................................................................................................................................................46
Neutral overcurrent - 51(E)..........................................................................................................................................................................48
Residual emergency overcurrent - 51(Eme) .............................................................................................................................................50
Neutral current unbalance - 51(SQL).........................................................................................................................................................52
Overvoltage - 59.............................................................................................................................................................................................54
Residual overvoltage - 59N..........................................................................................................................................................................56
Residual emergency overvoltage - 59N(Eme) ..........................................................................................................................................58
Maximum directional current - 67 ..............................................................................................................................................................60
Ground directional overcurrent - 67N........................................................................................................................................................65
Ground directional overcurrent - 67N (Intermittent faults) ....................................................................................................................69
Ground directional overcurrent - 67N (Evolving faults) ..........................................................................................................................70
Logical block - Block1...................................................................................................................................................................................74
EAC (Equilibratore Automatico di Carico) [ALB frequency (Automatic Load Balancer)] protection ..............................................75
Second harmonic restraint - 2ndh-REST...................................................................................................................................................77
Breaker monitoring .......................................................................................................................................................................................78
Average measures ........................................................................................................................................................................................81
Oscillographyy ...............................................................................................................................................................................................81
CT Monitoring - 74CT ....................................................................................................................................................................................82
VT monitoring - 74VT.....................................................................................................................................................................................83
Breaker coils control monitoring ...............................................................................................................................................................85
Synchrocheck relay (Synchro check) - 25................................................................................................................................................86
Auto-reclose (79)...........................................................................................................................................................................................91
Breaker failure - BF.......................................................................................................................................................................................94
5 AUTOMATION FUNCTIONS 95
Logical selectivity block - FSL.....................................................................................................................................................................95
6 CYBER SECURITY 96
Configuration management .........................................................................................................................................................................96
Hardware systems and networking equipment .......................................................................................................................................96
Initial system configuration .........................................................................................................................................................................96
Threat and vulnerability management.......................................................................................................................................................96
Access control...............................................................................................................................................................................................96
Authentication and authorization management ......................................................................................................................................96
Auditing...........................................................................................................................................................................................................96
Network communication security .............................................................................................................................................................97

4DMC3S - Manual - 08 - 2021
Cybersecurity application scheme ............................................................................................................................................................97
Access procedure ........................................................................................................................................................................................97
7 APPENDIX 98
DMC3S - INVERSE TIME CURVES ..............................................................................................................................................................98
DMC3S - IEC normal inverse curves (type A)...........................................................................................................................................99
DMC3S - IEC long time inverse curves (type LTI)...................................................................................................................................100
DMC3S - IEC very inverse curves (type B)..............................................................................................................................................101
DMC3S - IEC extremely inverse curves (type B)....................................................................................................................................102
DMC3S - I/O CIRCUITS ...............................................................................................................................................................................103
DMRIS0 - I/O CIRCUITS..............................................................................................................................................................................104
DMC3S- DIMENSIONS - front, internal and rear views........................................................................................................................105
DMC3S - DIMENSIONS - viewed from above ........................................................................................................................................106
DMC3S - DIMENSIONS - DMRIS0 module..............................................................................................................................................107
DMC3S - PHOTO..........................................................................................................................................................................................108
DMC3S - EXAMPLE OF APPLICATION TO A A3 PRIMARY SUBSTATION..........................................................................................109
DMC3S - CE DECLARATION OF CONFORMITY .......................................................................................................................................109

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DMC3S - Manual - 08 - 2021
1 GENERAL INFORMATION
—Preface
Protection and control panels can be installed to the risers of the MV section and HV user line of
primary substations supplied by ENEL Distribuzione S.p.A.
The devices can also be installed to MV nodes and primary substations operated with neutral to
ground or very low neutral resistance in foreign countries in which ENEL has operations.
To supplement the protection functions, the system includes the following functions: breaker failure
(BF), CT monitoring (74CT), VT monitoring (74VT), trip circuit monitoring (74TCS), Synchrocheck relay,
EAC (Equilibratore Automatico di Carico) [ALB frequency (Automatic Load Balancer)] protection,
programmable logic controller (PLC) and automatic reclosing (79).
The system can be calibrated, programmed and its logs and values read with a PC running the Thy-
Setter software, or via Ethernet; all the above operations are also available via the front panel keypad
(MMI).
2 DESCRIPTION
—Main Characteristics
• Three phase with definite 1A or 5A nominal current selectable via software.
• One residual current input with 1A or 5A nominal current selectable via software.
• Three phase with nominal voltage programmable in the range 50...130 V (UR=100V) and one residual
input with nominal voltage programmable in the range 50...130 V (UER = 100V).
• Backlight LCD graphic display.
• Multicolour indicator LED on the front panel, freely programmable.
• Logical inputs on input board (IN1-1...IN1-6), freely programmable.
• Logical inputs on input board (INC-1...INC-5).
• Output relays (KS1-1...KS1-6) independently programmable, for protection functions, self-test and
control functions, and outputs with solid state relays.
• One rear port for communication with remote communications and control systems via Ethernet,
running the IEC 61850 protocol.
• Two rear ports for communication with remote I/O modules via Ethernet, running the MODBUS
TCP/IP® and IEC61850 protocols.
• One front panel Ethernet port, for local communications, running the MODBUS TCP/IP® protocol.
• Calendar clock with buffer.
• Nominal frequency 50 or 60 Hz, programmable via software.
The major operational characteristics are:
• Measurement of the effective value of the fundamental component of the currents and voltages
using DFT (Discrete Fourier Transform).
• The directional current function employs a special operating criterion based on a voltage memory
algorithm: this enables the relay to operate properly even in case of three-phase dead short when
the line voltage goes almost to zero.
• Logging of recent malfunctions (SFR) and events (SER).
• Logging of oscilloscope readings (DFR) in the COMTRADE format.
• All settings and logged data (faults, events, couinters, oscilloscope) are saved to non-volatile mem-
ory and are thus available even in case of auxiliary voltage failure
• Option to update the firmware.
—Protection Functions
• 27CC(80.s) Direct undervoltage
• 32P Directional active overpower
• 46 Negative sequence overcurrent
• 50/51 Phase overcurrent
• 50N/51N Residual overcurrent
• 51N(E) Neutral overcurrent
• 51N(Eme) Residual emergency overcurrent
• 51(SQL) Neutral unbalance overcurrent
• 59 Overvoltage
• 59N Residual overvoltage
• 59N(Eme) Residual emergency overvoltage
• 67 Phase directional overcurrent
• 67N Ground directional overcurrent
—Control Functions
• 25 Synchrocheck relay
• 79 Automatic reclosing
• 74CT Phase CT monitoring
• 74VT Line VT monitoring

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3 TECHNICAL CHARACTERISTICS
3.1 GENERAL INFORMATION
—Mechanical characteristics
Installation Rack 19” 3U
Dimensions (H x W x D) 133 x 483 x 344
Terminals Screw clamps
Maximum wire cross section 4 mm2
Weight 4.7 kg
—Electromagnetic compatibility (EMC)
Standard EN 61000-6-2
Part 6-2: Generic standards - Immunity for industrial environments
Standard EN 61000-6-4
Part 6-4: Generic standards - Emissions for industrial environments
Standard EN 61000-4-2, EN 61000-4-2/A1,
EN 61000-4-2/A2
Electrostatic discharge immunity test
Standard EN 61000-4-3
Radiofrequency electromagnetic field immunity test
Standard EN 61000-4-4
Electrical fast transient immunity test
Standard EN 61000-4-5
Pulse immunity test
Standard EN 61000-4-6, EN 61000-4-6/A1
Immunity to conducted disturbances induced by radiofrequency fields
Standard EN 61000-4-8, EN 61000-4-8/A1
mains frequency magnetic field immunity test
Standard EN 61000-4-10, EN 61000-4-10/A1
Damped oscillatory magnetic field immunity test
Standard EN 61000-4-11
Immunity test for voltage dips, brief interruptions and voltage variations
Standard EN 61000-4-12
Oscillatory wave immunity test
Standard EN 61000-4-16, EN 61000-4-16/A1
Immunity test for conducted common mode disturbances in the frequency range 0 to 150 kHz
Standard EN 61000-4-29
Immunity test for voltage dips, brief interruptions and voltage variations on DC power ports
Standard EN 55011, 55011/A1, 55011/A2
Industrial, scientific and medical radiofrequency equipment (ISM) - Radiodisturbance characteris-
tics - Limits and measurement methods
Standard EN 50160
Characteristics of public electrical power grid voltage
—Disturbance immunity tests
Enclosure door
Standard IEC 61000-4-2 EN 60255-22-2
Electrostatic discharge (Level 4)
• Contact discharge 8 kV
• Air discharge 15 kV
Standard IEC 61000-4-3 EN 61000-4-3
Radiofrequency electromagnetic fields (Level 3)
• 80...3000 MHz AM 80% 10 V/m
• 900...1980 MHz MHz Pulse modulated 10 V/m
Standard IEC 61000-4-8 EN 61000-4-8
Magnetic field 50 Hz (Level 5)
• 50 Hz continuous 100 A/m
• 50 Hz 1 s 1 kA/m
Standard IEC 61000-4-10 EN 61000-4-10
Damped oscillatory wave (Level 5)
• Damped oscillatory wave 0.1 MHz 100 A/m
• Damped oscillatory wave 1 MHz 100 A/m
Ground port
Standard IEC61000-4-4 EN 60255-22-4
Fast transients 5/50 ns (Level 4)
• Fast transients 4 kV
Standard IEC 61000-4-6 EN 61000-4-6
Conducted electromagnetic fields (Level 3)
• 0.15...80 MHz AM 80% 1kHz 10 V

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DMC3S - Manual - 08 - 2021
Signal port
Standard IEC61000-4-4 EN 61000-4-4
Fast transients 5/50 ns (Level 4)
Fast transients 2 kV
Standard IEC 61000-4-6
Conducted electromagnetic fields (Level 3)
• 0.15...80 MHz AM 80% 1kHz 10 V
Standard EC 61000-4-18 EN 60255-22-1
Damped oscillatory wave (Level 3)
• 0.1 MHz and 1 MHz common mode 2.5 kV
• 0.1 MHz and 1 MHz differential mode 1.0 kV
Standard EC 61000-4-12 EN 60255-22-1
Damped oscillatory wave (Level 3)
• Ring wave common mode 2.0 kV
• Ring wave differential mode 1.0 kV
Standard IEC 61000-4-16
Mains frequency voltages (Level 3-4)
• 162/3 continuous 100 V
• 162/3 1s 300 V
• 50 Hz continuous 100 V
• 50 Hz 1 s 300 V
• 0.015...150 kHz 10-1-1-10 V
DC power input and output port
Standard IEC61000-4-4 EN 60255-22-4
Fast transients 5/50 ns (Level 4)
Fast transients 2 kV, 4kV
Standards
Standard IEC 61000-4-5
High energy pulses (Level 4)
• Uaux (line-ground) 4 kV
• Uaux (line-line) 2 kV
Standard IEC 61000-4-6 EN 61000-4-6
Conducted electromagnetic fields (Level 3)
• 0.15...80 MHz AM 80% 1kHz 10 V
Standard EC 61000-4-12 EN 60255-22-1
Damped oscillatory wave (Level 3)
• 0.1 MHz common mode 2.0 kV
• 0.1 MHz differential mode 1.0 kV
Standard IEC 61000-4-16
Mains frequency voltages (Level 3-4)
• 162/3 continuous 100 V
• 162/3 1s 300 V
• 50 Hz continuous 100 V
• 50 Hz 1 s 300 V
• 0.015...150 kHz 10-1-1-10 V
Standard IEC 61000-4-17
Ripple on DC auxiliary power circuit
DC auxiliary power supply
• Variation 10%
Standard IEC 61000-4-29
Voltage dips, short interruptions and voltage variations on DC input power port immunity tests
• Voltage dip duration with UT=40% 100 ms
• Short interruption duration with UT=0% 50 ms
• Voltage variation duration with Un=80...120% 10 s
—Climate tests
Standard IEN 60068-2-1
Environmental tests: Part 2-1: Tests - Test A: Cold
Standard IEN 60068-2-2
Environmental tests: Part 2-2: Tests - Test B: Dry heat
Standard IEN 60068-2-14
Environmental tests: Part 2: Tests - Test N: Temperature change
Standard IEN 60068-2-33
Environmental tests: Part 2: Tests - Temperature change test guidelines
Standard IEN 60068-2-78
Environmental tests: Test Cab: Damp heat, stationary regime
Standard IEN 60068-3-1
Environmental tests: Part 3: Basic information. Section 1: Cold and dry heat tests
Standard IEN 60068-3-4

8DMC3S - Manual - 08 - 2021
Environmental tests: Part 3-4: Supporting documentation and guidelines. Damp heat tests
—Mechanical tests
Standard EN 60255-21-1 EN 60255-21-2 RMEC01
Vibration, impact, shock and seismic resistance tests for measurement relays and protection equip-
ment
• EN 60255-21-1 Vibration tests (sinusoidal) Class 1
• EN 60255-21-2 Impact and shock tests Class 1
—Insulation test
Standard EN 60255-5
Coordination of the isolation of measurement relays and protection equipment
Test at 50Hz (1 min):
• Auxiliary circuit 2 kV
• Input circuits 2 kV
• Output circuits 2 kV
• Output circuits (between open contacts) 1 kV
• Communication ports 1 kV
Isolation resistance >100 MW
Standard EN 60255-5
Pulse resistance voltage test
Pulse test (1.2/50 ms):
• Auxiliary circuit 5 kV
• Input circuits 5 kV
• Output circuits 5 kV
• Output circuits (between open contacts) 5 kV
Standard EN 61010-1
Insulation test for electrical measurement, control and laboratory equipment
Pollution degree 3
Reference voltage 250 V
Reference category IV
Standard EN 60204-1
Safety of machinery - Electrical equipment of machines. Part 1: General rules
—Reference specifications
Structural and functional requisites for the Multifunctional Protection
and Control Panel for Primary Substations (DV7203) ENEL DMI 9 00016
Protection and control device for HV/MV substation –
Multifunctional feederprotection(MFP) GSTP101_01
Protection and control device for HV/MV substation – Communication profile
(according to IEC 61850) for the MFP GSTP103_01
Cyber security requirements for protection and control devicesGSTP901_01
Electrical Diagrams for Protection and control device for HV /
MV substation – Multifunctional Feeder Protection MFP GSTX101_01
—ENEL general standards and tables
Standard IEC61850-x
Communications networks and system for automation of electrical systems
Standard IEE 802.x
Standards relating to the Ethernet port
ENEL unification table DV25
Spring loaded clamps
ENEL unification table DV29
Terminals
ENEL unification table DV1000 rev .01
Data communications, electrical and functional characteristics
ENEL unification table DV801A
Connectors (34 pole)
—Certifications
CE conformity
• EMC Directive 2014/30/EC
• Low Voltage Directive 2014/35/EC
—Environmental Condition
Ambient temperature -10...+55 °C
Storage temperature -20...+70 °C
Relative humidity ≤95 %
Atmospheric pressure 860...1060 kPa

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DMC3S - Manual - 08 - 2021
3.2 INPUT CIRCUITS
—Auxiliary circuit power U
aux
Voltage
• Nominal value (range) 110 V-
• Operating range 77...143 V- (± 30%)
• Maximum inrush current 10 A, 10 ms
• Ripple 10%
• Max power draw (3 relays excited and MMI active) 10 W
• Overload (1 s) 2 Vn
• Insensitivity to micro-interruptions Vaux 0V 50 ms
• Cooling Natural ventilation
—Amperometric phase inputs
Nominal phase current of relay In1A or 5A, set by softwarePermanent
overload 25 A
Thermal overload (1s) 250 A
Dynamic overload (0.01s) 800 A
Power draw (per phase) ≤0.003 VA with In=1 A
Power draw (per phase) ≤0.07 VA with In=5 A
—Residual current amperometric inlet
Nominal residual current of relay IEn 1A or 5A, set by softwarePermanent
overload 25 A
Thermal overload (1 s) 500 A
Dynamic overload (0.01 s) 800 A
Power draw ≤0.003 VA with IEn=1 A
≤0.07 VA with IEn=5 A
—Voltmetric inputs
Nominal phase-to-phase voltage of relay Un50...130 V (UR= 100 V)
Nominal phase voltage of relay En= Un/ √3 -
Permanent overload 1.3 Un
Thermal overload (1 s) 2 Un
Power draw (per phase with UR= 100 V) ≤ 0.2 VA
—Residual voltage / Vsync voltage voltmetric input
Nominal residual voltage of relay UEn 50...130 V (UER = 100 V)
Permanent overload 1.3 UEn
Thermal overload (1 s) 2 UEn
Power draw (UER = 100 V) ≤ 0.2 VA
—Digital inputs
Number of inputs:
• Input board (IN1-1...IN1-6) 6
• Control board (INC1...INC-5) 5
• External module DMRIS01 (DMRIS01-1, DMRIS01-12) 12
• External module DMRIS02 (DMRIS02-1, DMRIS02-12) 12
Type of circuit optocoupler
Operational range as Uaux
Minimum activation voltage 82.5 V
Reset voltage 66 V
Maximum current draw with excited input 3 mA
Timers associated with the logical inputs
• Acquisition delay OFF/ON (IN1-1 tON, INx-x tON) 0.00...100.0 s
• Acquisition delay ON/OFF (IN1-1 tOFF, INx-x tOFF) 0.00...100.0 s
Logic POSITIVE/NEGATIVE
3.3 OUTPUT CIRCUITS
—Final electromechanical relays
Number 6
Type of contact (KS1-1...KS1-6) closing (SPST-NO, type A)
Nominal current 5 A
Nominal voltage / maximum switchable voltage 250 V~/400 V~
Closing power (MAKE) 1000 W/VA
Minimum switchable load 300 mW (5 V/ 5 mA)
Mechanical service life 106
Electrical service life 105
Interrupting capacity:
• DC (L/R = 40 ms) 0.2 A
• AC (l= 0.4) 1250 VA
Minimum pulse duration 0....500 ms (step 5 ms)

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—Final solid state relays
Number 4
Contact type:
• 52CH, 52AP, Trip MV closing (SPST-NO, type A)
• 80S NC closing (SPST-NC, type B)
• 80S NO closing (SPST-NC, type A)
Nominal current 10 A
Nominal voltage 110 V-
Interrupting capacity, DC (L/R = 40 ms) 4 A
3.4 MMI
Display Backlight LCD graphic 128x64 px
LEDs
Number 20
• Ethernet, 61850 (green) 1
• Ethernet, local (green) 1
• Ethernet, remote module 1 (green) 1
• Ethernet, remote module 2 (green) 1
• Programmable (red-green-yellow) 16
Breaker position cross indicator LED
Keypad 7 buttons
Breaker control buttons AP - CH
Reclosing selector Rocker switch
3.5 COMMUNICATIONS CIRCUITS
—Local port
Ethernet 10/100 Base TX
• Protocol ModBus®TCP/IP
• Connection RJ45
—Connection 61850
Ethernet 100 Base FX
• Connection LC - Fibre optic 1300 nm
• Protocol ModBus®TCP/IP, IEC51850
—Remote module connection
Number 2
Ethernet 100 Base FX
• Connection LC - Fibre optic 1300 nm
• Protocol ModBus®TCP/IP, IEC61850

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DMC3S - Manual - 08 - 2021
3.6 PROTECTION AND CONTROL FUNCTIONS
Protection Functions Thresholds Operating time Shrink time trip
27CC (80.S) UCC< DEFINITE NO
32P P1> DEFINITE NO
P2> DEFINITE NO
46 I2> DEFINITE/INVERSE YES
I2>> DEFINITE/INVERSE YES
50/51
I> DEFINITE/INVERSE YES
I>> DEFINITE/INVERSE YES
I>>> DEFINITE YES
I>>>> DEFINITE/INVERSE YES
50N/51N
IE> DEFINITE/INVERSE YES
IE>> DEFINITE YES
IE>>> DEFINITE YES
51N(E) INe> DEFINITE/INVERSE YES
INe>> DEFINITE YES
51N(Eme) IEeme> DEFINITE/INVERSE YES
51(SQL) ISQL> DEFINITE/INVERSE YES
59 U> DEFINITE/INVERSE NO
U>> DEFINITE NO
59N UE> DEFINITE/INVERSE NO
UE>> DEFINITE NO
59N(Eme) UEeme> DEFINITE/INVERSE NO
67
IPD> DEFINITE/INVERSE YES
IPD>> DEFINITE/INVERSE YES
IPD>>> DEFINITE YES
IPD>>>> DEFINITE/INVERSE YES
67N
IED> DEFINITE/INVERSE YES
IED>>a DEFINITE/INVERSE YES
IED>>b DEFINITE YES
IED>>> DEFINITE YES
67N.Sb DEFINITE YES
IED>>>> DEFINITE NO
IED>>>>> DEFINITE NO
Control Functions
25
79
RR
RR+L
RM1
RM2
RM3
74VT
74CT
FSL FSL1 Logical selectivity
FSL2 Logical selectivity

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3.6 NOMINAL VALUES
Clamp voltage value UE or V2 UE or V2
Phase correction V1-V2 0...360 °
Voltage value for synchrocheck V1 UL1/UL2/UL3
Nominal relay frequency (fn) 50, 60 Hz
Nominal phase current IL1, IL2, IL3 of relay (In) 1 A or 5 A
Nominal phase current ISQL- INe, IL3 of relay - In1 A or 5 A
Primary CT nominal current of phase - Inp 1 A...10 kA
1...499 A (step 1 A)
500...4990 A (step 10 A)
5000...10000 A (step 100 A)
Nominal residual current of relay - IEn 1 A or 5 A
Primary CT residual nominal current - Inp 1 A...10 kA
1...499 A (step 1 A)
500...4990 A (step 10 A)
5000...10000 A (step 100 A)
Nominal phase-to-phase voltage of relay - Un50...130 V (step 1 V)
Nominal phase-to-phase voltage of relay V2 - Un2 50...130 V (step 1 V)
Nominal phase voltage of relay - EnEn = Un/ √3
Nominal residual voltage of relay with direct measurement - UEn 50...130 V (step 1 V)
Nominal residual voltage of relay with calculated residual voltage - UECN UECN = Un ∙ √3 = En ∙ 3
Nominal active power of relay - Pn = √3 ∙ Un ∙ In = 3 ∙ En ∙ In -
Nominal reactive power of relay - Qn = √3 ∙ Un ∙ In = 3 ∙ En ∙ In -
Nominal apparent power of relay - Sn = √3 ∙ Un ∙ In = 3 ∙ En ∙ In-
Nominal primary phase-to-phase VT line voltage - Unp 50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
Nominal primary phase-to-phase VT residual voltage ∙√3 - UEnp 50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
Nominal primary phase-to-phase V2 side VT voltage - Un2p 50 V...500 kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
3.7 PROTECTION FUNCTIONS
—Direct undervoltage - 27CC (80.s)
Threshold UCC<
Definite time
First definite time threshold ( U
cc<def)0.60...1.00 Uncc (step 0.01 Uncc)
Operating time (tUcc<def) 0.00...10.00 s (step 0.01 s)
—Maximum directional active power 32P
Threshold P 1>
Parameters
Tripping direction (P1>DIR)P Forward/P Reverse/P Forward/Reverse
Reset delay (tP1>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
First definite time threshold ( P 1>def) 0.80...1.20 Pn(step 0.01 Pn)
Operating time (tP1>def) 0.05...1000 s
0.05...99.9 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (trP1>def) 0.05...0.50 s (step 0.01 s)
Threshold P 2>
Parameters
Tripping direction (P2>DIR)P Forward/P Reverse/P Forward/Reverse
Reset delay (tP2>RES)0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
Definite time
Second definite time threshold ( P 2>def) 0.80...1.20 Pn(step 0.01 Pn)
Operating time (tP2>>def) 0.05...1000 s
0.05...99.9 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (trP2>def) 0.05...0.50 s (step 0.01 s)

13
DMC3S - Manual - 08 - 2021
—Negative sequence overcurrent - 46
Threshold I2>
Type of characteristic I2> (I2>Curve)DEFINITE,
IEC/BS A, B, B-LI, C,
Reset delay (t2>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
First definite time threshold (I2>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In(step 0.1 In)
Operating time (t2>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI2>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (ttatcI2>def) 1...60 s (step 1 s)
Inverse time [1]
First inverse time threshold (I2>inv) 0.050...20.0 In
0.050...0.999 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Operating time (t2>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold I2>>
Reset delay (t2>>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
Second definite time threshold (I2>>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In(step 0.1 In)
Operating time (t2>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI2>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcI2>>def) 1...60 s (step 1 s)
Inverse time
Second inverse time threshold (I2>inv) 0.050...20.0 In
0.050...0.999 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Operating time (t2>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Note 1 Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · t2>inv / [(I2/I2>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · t2> inv / [(I2/I2>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · t2> inv / [(I2/I2>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · t2> inv / [(I2/I2>inv)2 - 1]
t:operating time
t2>inv:operating time regulation
I2>inv:trip threshold regulation
I2:measured current
Asymptotic reference value: 1.1 I2>inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ I2/I2>inv ≤ 20
With regulation I2>inv greater than 2.5 In, the upper limit of the measurement range is 30 In

14 DMC3S - Manual - 08 - 2021
—Overcurrent - 50/51
Threshold I>
Type of characteristic I> (I>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay I> (t>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
First definite time threshold (I>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Operating time (t>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcI>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (I>inv) 0.050...20.00 In
0.050...0.995 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Operating time (t>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold I>>
Type of characteristic (I>>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (t>>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
Second definite time threshold (I>>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Operating time (t>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcI>def) 1...60 s (step 1 s)
Inverse time
Second inverse time threshold (I>inv) 0.050...20.00 In
0.050...0.995 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Operating time (t>>inv) 0.02...10.00 s (step 0.01 s)
Threshold I>>>
Reset delay I>>> (t>>>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
Third definite time threshold (I>>>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Note 1
Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · t>inv / [(I/I>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · t> inv / [(I/I>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · t> inv / [(I/I>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · t> inv / [(I/I>inv)2 - 1]
t:operating time, minimum operating time: 0.1 s
t>inv:operating time regulation
I>inv:trip threshold regulation
I:measured current
Asymptotic reference value: 1.1 I>inv
Dynamic: 1.1 ≤ I/I>inv ≤ 20, with regulation I>inv greater than 2.5 In, the upper limit of the measurement range is 30 In

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DMC3S - Manual - 08 - 2021
Operating time (t>>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI>>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcI>>>def) 1...60 s (step 1 s)
Threshold I>>>>
Type of characteristic (I>>>>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (t>>>>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
Second definite time threshold (I>>>>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Operating time (t>>>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcI>>>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcI>>>>def) 1...60 s (step 1 s)
Inverse time
Second inverse time threshold (I>>>>inv) 0.050...20.00 In
0.050...0.995 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Operating time (t>>>>inv) 0.02...10.00 s (step 0.01 s)
—Residual overcurrent - 50N/51N
Threshold IE>
Type of characteristic (IE>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (tE>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
First definite time threshold (IE>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tE>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcIE>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIE>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (IE>inv) 0.005...2.00 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...2.00 IEn (step 0.01 IEn)
Operating time (tE>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Note1 Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · tE>inv / [(IE/IE>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · tE>inv / [(IE/IE>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · tE> inv / [(IE/IE>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · tE>inv / [(IE/IE>inv)2 - 1]
t:operating time
tE>inv:operating time regulation
IE>inv:trip threshold regulation
IE:measured residual current
Asymptotic reference value: 1.1 IE>inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ IE/IE>inv ≤ 20 With regulation IE>inv greater than 0.5 IEn, the upper limit of the measurement range is 10 IEn

16 DMC3S - Manual - 08 - 2021
Threshold IE>>
Reset delay (tE>>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
Second definite time threshold (IE>>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcIE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIE>>def) 1...60 s (step 1 s)
Threshold IE>>>
Reset delay (tE>>>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
Third definite time threshold (IE>>>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcIE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIE>>def) 1...60 s (step 1 s)
—Neutral overcurrent - 51N(E)
Threshold INe>
Type of characteristic (INe>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (tNe>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
First definite time threshold (INe>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tNe>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcINe>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcINe>>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (INe>inv) 0.005...2.00 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...2.00 IEn (step 0.01 IEn)
Note1 Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · tNe>inv / [(INe/INe>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · tNe>inv / [(INe/INe>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · tNe> inv / [(INe/INe>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · tNe>inv / [(INe/INe>inv)2 - 1]
t:operating time
tNe>inv:operating time regulation
INe>inv:trip threshold regulation
INe:measured residual current
Asymptotic reference value: 1.1 IENe>inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ INe/INe>inv ≤ 20;
With regulation INe>inv greater than 0.5 IEn, the upper limit of the measurement range is 10 IEn

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DMC3S - Manual - 08 - 2021
Operating time (tNe>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold INe>>
Reset delay (tNe>>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
Second definite time threshold (INe>>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcNe>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcINe>>def) 1...60 s (step 1 s)
—Residual emergency overcurrent - 51N(Eme)
Threshold INe>
Type of characteristic (IEeme>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (tEeme>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
First definite time threshold (IEeme>def) 0.005...25.0 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...9.99 IEn (step 0.01 IEn)
10.0...25.0 IEn (step 0.1 IEn
Operating time (tEeme>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcIEeme>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIEeme>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (IEeme>inv) 0.005...2.00 IEn
0.005...0.995 IEn (step 0.005 IEn)
1.00...2.00 IEn (step 0.01 IEn)
Operating time (tEeme>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Note1 Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · tEeme>inv / [(IE/IEeme>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · tEeme>inv / [(IE/IEeme>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · tEeme> inv / [(IE/IEeme>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · tEeme>inv / [(IE/IEeme>inv)2 - 1]
t:operating time
tEeme>inv:operating time regulation
IEeme>inv:trip threshold regulation
IE:measured residual current
Asymptotic reference value: 1.1 IEeme>inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ IE/IEeme>inv ≤ 20
With regulation IEeme>inv greater than 0.5 IEn, the upper limit of the measurement range is 10 IEn

18 DMC3S - Manual - 08 - 2021
—Neutral current unbalance - 51(SQL)
Threshold ISQL>
Type of characteristic (ISQL>Curve)DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay I> (t>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
First definite time threshold (ISQL>def) 0.005...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Operating time (tSQL>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (tcISQL>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcISQL>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (ISQL>inv) 0.005...2.00 In
0.005...0.995 In (step 0.005 In)
1.00...2.00 In (step 0.01 In)
Operating time (tSQL>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
—Overvoltage - 59
Common configurations:
Type of voltage measurement for 59 - phase-to-phase/phase (Utype59)[2] Uph-ph/Uph-n
Operating logic 59 (Logic59) AND/OR
Threshold U>
Type of characteristic U> (U>Curve) DEFINITE/INVERSE
Definite time
First 59 definite time threshold ( U >def) 0.500...1.500 Un (step 0.001 Un)
Operating time U>def (tU>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Inverse time[3]
First 59 inverse time threshold ( U >inv) 0.500...1.500 Un (step 0.001 Un)
Operating time (tU>inv) 0.10...100.0 s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Threshold U>>
Definite time
Second definite time threshold ( U >>def) 0.500...1.500 Un (step 0.001 Un)
Operating time (tU>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Note 2
Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · tSQL>inv / [(ISQL/ISQL>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · tSQL> inv / [(ISQL/ISQL>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · tSQL> inv / [(ISQL/ISQL>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · tSQL> inv / [(ISQLISQL>inv)2 - 1]
t:operating time, minimum operating time: 0.1 s
tSQL>inv:operating time regulation
ISQL>inv:trip threshold regulation
ISQL:measured current
Asymptotic reference value: 1.1 ISQL>inv
Dynamic: 1.1 ≤ ISQL/ISQL>inv ≤ 20, with regulation ISQL>inv greater than 2.5 ISQLn, the upper limit of the measurement range is 30 ISQLn
Note 2 With Uph-ph set on the MMI, all thresholds are expressed in p.u. Un,With Uph-n set on the MMI, all thresholds are expressed in p.u. En
Note 3 The general formula for inverse time curves is: t = (0.5 ∙ tU>inv) / [(U/U>inv) - 1]
t = operating time (in seconds)
tU>inv = operating time regulation (in seconds), U = measured voltage
U>inv= trip threshold regulation

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DMC3S - Manual - 08 - 2021
—Residual overvoltage - 59N
Common configurations:
Type of residual voltage measurement for 59N- direct/calculated ( 3 VoType59N) UE /UEC
Threshold U
E>
Type of characteristic ( U
E>Curve) DEFINITE/INVERSE[1]
Reset delay (tUE>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
First definite time threshold ( U
E>def) 0.001...1.000 UEn (step 0.001 UEn)
Operating time (tUE>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Inverse time
First 59N inverse time threshold ( U
E>inv) 0.001...1.000 UEn (step 0.001 UEn)
Operating time v(tUE>inv) 0.10...100.0 s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Threshold U
E>>
Reset delay (tUE>>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
Second definite time threshold ( U
E>>def) 0.01...0.70 UEn (step 0.01 UEn)
Operating time (tUE>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
—Residual emergency overcurrent - 59N(eme)
Common configurations:
Type of residual voltage measurement for 59N- direct/calculated ( 3 VoType59N) UE /UEC
Threshold U
Eeme>
Type of characteristic ( U
Eeme>Curve) INVERSE/DEFINITE[2]
Reset delay tUEeme>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
First definite time threshold ( U
Eeme>def) 0.001...1.000 UEn (step 0.001 UEn)
Operating time (tUEeme>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Inverse time
First inverse time threshold ( U
Eeme>inv) 0.001...1.000 UEn (step 0.001 UEn)
Operating time (tUEeme>inv) 0.10...100.0 s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Note 1 The general formula for inverse time curves is: t= (0.5 ∙ tUE>inv) / [(UE/UE>inv) - 1]
t = operating time (in seconds)
tUE>inv = operating time regulation (in seconds)
UE= residual voltage (measured directly or calculated according to the measurement type configuration)
UE>inv = trip threshold regulation
Note 2 The general formula for inverse time curves is: t= (0.5 ∙ tUEeme>inv) / [(UE/UEeme>inv) - 1]
t = operating time (in seconds)
tUE>inv = operating time regulation (in seconds)
UE= residual voltage (measured directly or calculated according to the measurement type configuration)
UE>inv = trip threshold regulation

20 DMC3S - Manual - 08 - 2021
—Maximum directional current - 67
Common configurations:
Operating mode 67 (Mode67) I/I∙cos
Operating logic 67 (Logic67) 1/3 / 2/3
Threshold IPD>
Type of characteristic (IPD>Curve) DEFINITE,
IEC/BS A, B, C, B-LI
Reset delay (tPD>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
First definite time threshold (IPD>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Characteristic angle (ThetaPD>def) 0...359° (step 1°)
Operating time (tPD>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (trPD>def) 0.05...0.50 s (step 0.01 s)
Shrink time trip (tcIPD>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIPD>def) 1...60 s (step 1 s)
Inverse time[1]
First inverse time threshold (IPD>inv) 0.050...20.0 In
0.050...0.995 In (step 0.005 In)
1.00...20.00 In (step 0.01 In)
Characteristic angle (ThetaPD>inv) 0...359° (step 1°)
Operating time (tPD>inv) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold IPD>>
Type of characteristic (IPD>>Curve) DEFINITE,
IEC/BS A, B, C, B-LI
Reset delay (tPD>>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
Second definite time threshold (IPD>>def) 0.050...25.0 In
0.050...0.995 In (step 0.005 In)
1.00...9.99 In (step 0.01 In)
10.0...25.0 In (step 0.1 In)
Characteristic angle (ThetaPD>>def) 0...359° (step 1°)
Operating time (tPD>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Back-up time (trPD>>def) 0.05...0.50 s (step 0.01 s)
Shrink time trip (tcISQL>>def) 0.05...1000 s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (tatcIPD>>def) 1...60 s (step 1 s)
Note1 Inverse time curve IEC 255-3/BS142 (type A or SIT): t = 0.14 · tPD>inv / [(I/IPD>inv)0.02 - 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · t> inv / [(I/IPD>inv) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · t> inv / [(I/IPD>inv) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · tPD>inv / [(I/IPD>inv)2 - 1]
t:operating time
tPD>inv:operating time regulation
IPD>inv:trip threshold regulation
IPD:measured current
Asymptotic reference value: 1.1 IPD>inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ I/IPD>inv ≤ 20
With regulation IPD>inv greater than 2.5 In, the upper limit of the measurement range is 30 In