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Manual 37353A

MFR 13 Packages - Protection Relay

© Woodward

Page 49/91

Inverse Time-Overcurrent Monitoring

NOTE

All percentage indications of the current refer to the rated current (see page 37).

Function:

Monitoring of overcurrents including inversely proportional time dependent tripping characteristic.

The selected trip curve defines the tripping time according to the measured current. The tripping time will be de-
creased according to a defined curve the higher the measured current is. According to IEC 255 three different
characteristics are available.

Normal inverse:

]

[

*

1

)

/

(

14

.

0

02

.

0

s

t

I

I

t

p

P

−

=

Very inverse:

]

[

*

1

)

/

(

5

.

13

s

t

I

I

t

p

P

−

=

Extremely inverse:

]

[

*

1

)

/

(

80

2

s

t

I

I

t

p

P

−

=

Formula definitions:

t:

tripping time

t

p

time set point value

I

fault current / monitored current

I

n

rated (nominal) current

I

p

current set point value

If t is greater than 162 s the system trips at 162 s. If t is lower than t

min

the tripping time is t

min

. The reaction time

for t

min

depends on the time it takes to monitor the fault and the operating time of the relays. t

min

is at least 20 ms.

Please consider during configuration:

for I

start

: I

start

> I

n

and I

start

> I

p

for I

p

the smaller I

p

is, the steeper is the slope of the tripping curve

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Содержание MFR 13

Страница 1: ...37353A Manual Version 3 1xxx Manual 37353A MFR 13 Packages Protection Relay...

Страница 2: ...ed off before disconnecting the battery from the system Electronic controls contain static sensitive parts Observe the following precautions to prevent dam age to these parts Discharge body static bef...

Страница 3: ...nt 14 Discrete Inputs 15 Outputs 16 Relay Outputs Standard Packages GPX GPX I GPY I GPY I N K08 16 Pulse Output Packages GPY I GPY I N 16 Analog Outputs Packages GPY I GPY I N 17 Interface Packages GP...

Страница 4: ...int 52 Ground Fault Monitoring Calculated Packages GP K08 54 Overload Monitoring 55 Reverse Reduced Power Monitoring 56 Unbalanced Load Monitoring 57 Reactive Power Monitoring 58 Relay Configuration 5...

Страница 5: ...d Page 5 91 APPENDIX F SERVICE OPTIONS 86 Product Service Options 86 Returning Equipment for Repair 86 Packing a Control 87 Return Authorization Number RAN 87 Replacement Parts 87 How to Contact Woodw...

Страница 6: ...ependent time overcurrent monitoring 47 Figure 6 2 Inverse time overcurrent characteristic normal inverse 50 Figure 6 3 Inverse time overcurrent characteristic very inverse 51 Figure 6 4 Inverse time...

Страница 7: ...he package list These packages can be found in the manual Each chapter headline points out if the described function is standard or part of a package Mounting B Flush mounting Current transformer seco...

Страница 8: ...ble for line to ground monitoring in a solidly or resistance grounded mains e g In phase to phase low voltage mains The line to ground current should at least represent 10 of the current transformer r...

Страница 9: ...9 9 Reverse reduced power monitoring P 9 9 9 9 9 9 Unbalanced load monitoring Ias 9 9 9 9 9 9 Reactive power monitoring loss of excitation monitoring Q Q 9 9 9 9 9 9 Ground fault monitoring calculated...

Страница 10: ...ups cigarette packages cello phane wrappers vinyl books or folders plastic bottles etc away from the control modules and work area as much as possible 4 Opening the control cover may void the unit war...

Страница 11: ...voltage L3 Relay 8 B C D E Synch check not configurable Relay 3 The socket for the PC configuration is situated on the side of the unit This is where the DPC must be plugged in Packages A Package GP B...

Страница 12: ...imeters mm to AWG and vice versa AWG mm AWG mm AWG mm AWG mm AWG mm AWG mm 30 0 05 21 0 38 14 2 5 4 25 3 0 95 600MCM 300 28 0 08 20 0 5 12 4 2 35 4 0 120 750MCM 400 26 0 14 18 0 75 10 6 1 50 300MCM 15...

Страница 13: ...ltage is necessary if the generator voltage is connected as a three wire system and the power measurement of the generator power must be three phase If the input for balancing the measuring system is...

Страница 14: ...transformers Generator current 1A or 5A L3 L2 L1 N G S2 S1 s2 l s1 k s2 L s1 L s1 k s2 l s1 k s2 l L2 s1 k s2 l 42 43 40 41 44 45 L1 L3 G Figure 3 6 Measuring inputs current Terminal Measurement Desc...

Страница 15: ...Page 15 91 Discrete Inputs Signal device Discrete input A B 18 to 250 Vac dc Figure 3 7 Discrete inputs Terminal Assigned common Description according to DIN 40 719 Part 3 5 8 3 Amax A B 5 6 Blocking...

Страница 16: ...Pkgs GPX GPX I GPY I GPY I N K08 2 5 mm Change over contact closing Root opening C D E 11 12 13 Relay 2 2 5 mm 14 15 16 Relay 3 2 5 mm 19 20 21 Relay 4 Pkgs GPX GPX I GPY I GPY I N K08 2 5 mm 22 23 2...

Страница 17: ...0 mA outputs are isolated from each other A B Analog output 0 V IA Figure 3 10 Analog outputs Terminal Description Amax 0 to 20 4 to 20 20 to 20 mA IA 0 V A B 51 50 Analog output 1 Packages GPY I GPY...

Страница 18: ...nverted A non inverted B inverted A non inverted Interface RS 485 Modbus RTU Slave Figure 3 11 Interfaces Terminal Description X1 X2 X3 X4 X5 B A GND B A RS 485 Modbus RTU Slave NOTE The Modbus interf...

Страница 19: ...e lines like phone lines will destroy the unit CAUTION The connection cable delivered with the DPC must be used between DPC and the unit to ensure proper functionality of the unit An extension or util...

Страница 20: ...via this discrete input Overvoltage monitoring Overfrequency monitoring Zero voltage monitoring Ground fault monitoring calculated External acknowledgement of the relays via the discrete input Blocki...

Страница 21: ...Normally Closed break contact and will de energize if the unit is not ready for operation Relay 2 3 Terminal 11 through 16 Output relay type change over contact The relay manager controls these relays...

Страница 22: ...wn the following values are indi cated Positive generator active load The generator supplies active load Inductive generator power factor The generator is overexcited and supplies Positive reactive po...

Страница 23: ...rm lags the voltage waveform thus having a lagging power fac tor Some inductive loads such as electric motors have a large startup current requirement resulting in lagging power factors Capacitive Ele...

Страница 24: ...Manual 37353A MFR 13 Packages Protection Relay Page 24 91 Woodward Phasor diagram inductive capacitive...

Страница 25: ...Standard I invers Ground fault calculated level 1 Standard Earthcur 1 Ground fault calculated level 2 Standard Earthcur 2 Overload Standard Overload Reverse reduced power Standard Rev power Unbalance...

Страница 26: ...configuration cable there DPC MFR 1 L2 L23 L1 L12 L3 L31 Hz Reversible Display Operating Display Menu Digit Cursor Clear Alarm Converting Controlling Monitoring Select 14 1 2 13 12 4 3 5 7 6 Figure 5...

Страница 27: ...olor Yellow Indication of the delta voltages If this LED is illuminated the values indicated on the display are the delta voltages phase phase 3 Operation Color Green Operation This LED is illuminated...

Страница 28: ...s saved by pressing the Select push button once By pressing the button again the user causes the system to advance to the next configuration screen 13 Menu Digit Color none Menu Digit Automatic mode M...

Страница 29: ...e configured to phase to phase The Wye LED will not illuminate in this application The Wye LED is off and the Delta LED is illuminated The delta voltages VL1 L2 VL2 L3 and VL3 L1 of the phase to phase...

Страница 30: ...rvoltage level 2 Standard Und volt 2 Asymmetry Standard Asymmetry Overfrequency level 1 Standard Overfreq 1 Overfrequency level 2 Standard Overfreq 2 Underfrequency level 1 Standard Und freq 1 Underfr...

Страница 31: ...permit the operator to reverse up to four previous screens exception it is not possible to reverse from the first parameter to the last parameter To perform the reverse function through the parameter...

Страница 32: ...he parameters Configuration is blocked Code level CS1 Basic Service Level Factory password 0 0 0 1 This code level entitles the user to change selected controller set points enable auto clearing displ...

Страница 33: ...tion access is granted by entering the appropriate password Code level 1 2 If an incorrect code number has been entered configuration is blocked OFF Password protection is disabled Access to configura...

Страница 34: ...described in the installation manual You may start the PC program as follows by Start Program Woodward LeoPC starting at version 3 1 xxx or by a double click on a file ending cfg in the subdirectory L...

Страница 35: ...pe of Monitoring on page 40 does not appear Potential Transformer Configuration Units with Package GP Volt transformer secondary 000V Potential transformer secondary 1 50 to 125 V 4 50 to 480 V The po...

Страница 36: ...potential transformer primary voltage is set here in kV This entry is used to show the system voltage in the display Example If a voltage of 400 V is measured without a potential transformer the secon...

Страница 37: ...e power means that with a positive effective direction inductive reactive lagging current flows in the ef fective direction If the control is connected to the terminals of a generator and if the outgo...

Страница 38: ...voltage and frequency differential of the two systems are within permissible limits the breaker closure command may be issued under the following conditions The respective monitored voltages of the t...

Страница 39: ...differential 0 1 to 15 0 A close command will not be issued until the measured differential voltage of the two systems is less than the value configured here An internal hysteresis of 12 5 of the val...

Страница 40: ...ges is recommended to avoid a phase earth fault in a compensated or isolated mains resulting in the voltage protection tripping The only effect on the screen Voltage measuring is the one described in...

Страница 41: ...e must ex ceed and remain above the configured threshold without interruption for at least the period of time specified in this screen Screen for Phase neutral Overvoltage 2 Phase N 000V Screen for Ph...

Страница 42: ...all below and remain below the configured threshold without interruption for at least the period of time specified in this screen Screen for Phase neutral Undervoltage 2 Phase N 000V Screen for Phase...

Страница 43: ...n is defined by this parameter If this limit is reached or fallen below the unit does not display a message If a relay was assigned to this function in the relay manager that relay will be energized Z...

Страница 44: ...layed Asymmetry Response v 00V Maximum permissible asymmetry 0 to 99 V The maximum voltage asymmetry is defined by this parameter If this limit is reached or exceeded the unit outputs the message Asym...

Страница 45: ...Overfrequency 1 Delay 00 00s Pickup delay level 1 0 02 to 99 98 s In order to initiate an overfrequency level 1 alarm the measured frequency must exceed and remain above the configured threshold with...

Страница 46: ...equency 1 Delay 00 00s Pickup delay level 1 0 02 to 99 98 s In order to initiate an underfrequency level 1 alarm the measured frequency must fall below and remain below the configured threshold withou...

Страница 47: ...ndependent time overcurrent monitoring ON OFF ON Independent time overcurrent monitoring is enabled The subsequent screens of this function are displayed OFF Independent time overcurrent monitoring is...

Страница 48: ...onfigured rated system current refer to page 36 If this limit is reached or exceeded the unit outputs the message overcur rent 3 If a relay was assigned to this function in the relay manager that rela...

Страница 49: ...EC 255 three different characteristics are available Normal inverse 1 14 0 02 0 s t I I t p P Very inverse 1 5 13 s t I I t p P Extremely inverse 1 80 2 s t I I t p P Formula definitions t tripping ti...

Страница 50: ...0 01 to 1 99s The time constant for tp is defined by this parameter Inv time ov cur Ip 0 0 In Inverse time overcurrent current constant Ip 0 1 to 3 0 In The current constant for Ip is defined by this...

Страница 51: ...p 1 0 s tp 0 5 s tp 0 2 s tp 0 1 s tp 0 05 s tp 1 6 s I start Ip Figure 6 3 Inverse time overcurrent characteristic very inverse Extremely Inverse Ip In I start 1 1 x In 0 01 0 1 1 10 100 1000 1 10 10...

Страница 52: ...ned As a result the unit cannot maintain power in order to initiate a voltage independent overcurrent delay The voltage restraint functionality reduces the overcurrent threshold of the inverse time ov...

Страница 53: ...at the knee curve setting Ia knee point setting in 100 Ip If the knee curve setting is configured to 20 for example and the monitored voltage is lower than 20 of the rated voltage the adjusted value...

Страница 54: ...xceeded the unit outputs the message Earthcur 1 If a relay was assigned to this function in the relay manager that relay will be energized Earth current 1 Delay 00 00s Pickup delay level 1 0 02 to 99...

Страница 55: ...refers to the configured rated power refer to page 37 If this limit is reached or exceeded the unit outputs the message overload If a relay was assigned to this function in the relay manager that rela...

Страница 56: ...erse min pow 00 Threshold reverse reduced power 99 to 99 Reverse power monitoring If the direction of the active power reverses and the measured power value falls below the configured negative percent...

Страница 57: ...ximum permissible unbalanced load 0 to 100 The maximum unbalanced load refers to the measured three phase currents If an asymmetrical load causes the phase currents to exceed the configured percentage...

Страница 58: ...will be energized Cap react pow Delay 00 00s Pickup delay 0 02 to 99 98 s In order to initiate a capacitive reactive power alarm the measured capacitive reac tive load must exceed and remain above th...

Страница 59: ...cked with the discrete input Blocking of protective functions remote acknowledgement are only reset after the fault condition is no longer present Auto clearing Relays configured ON refer to Auto Ackn...

Страница 60: ...ndard Underfrq Level 1 and level 2 Independent time overcurrent Standard Overcurr Levels 1 2 and 3 Inverse time overcurrent Standard Curr Inv Inverse time overcurrent with voltage restraint Standard C...

Страница 61: ...is an example showing relays 1 through 3 Depending on the model purchased the unit may have up to 7 configurable relays The Packages GPX GPX I GPY I GPY I N K08 enable to use 4 additional relays Examp...

Страница 62: ...ence of the numbers has no significance in the functionality or operations A relay output may be assigned to more than one protective function This will cause the relay to issue a signal when any of t...

Страница 63: ...Wh pulse or positive the collec tor output terminal 60 61 is energized for each positive kWh pulse Active energy Pulse kWh 000 0 Pulses per positive kWh 0 1 to 150 0 The quantity of pulses per measure...

Страница 64: ...ph N max 0 to 65 000 V Vol ph N min 0 to 65 000 V Vol 1 2 0 to 65 000 V Vol 2 3 0 to 65 000 V Vol 3 1 0 to 65 000 V Vol ph ph AV 0 to 65 000 V Vol ph ph max 0 to 65 000 V Vol ph ph min 0 to 65 000 V...

Страница 65: ...low limit for the analog output 0 20mA 0 mA is the configured low limit for the analog output 4 20mA 4 mA is the configured low limit for the analog output OFF The analog output is not enabled The su...

Страница 66: ...n protocols may be found in Appendix D Screens for Modbus RTU Slave Protocol Device number MOD Bus 000 Device number Modbus RTU Slave 1 to 255 Device number for the Modbus RTU Slave Baudrate 0000 Baud...

Страница 67: ...are not read within the prescribed time and unsuccessful data exchange is detected and the alarm message Interface is is sued OFF The interface monitoring is disabled Interface fault to relay 0000 Rel...

Страница 68: ...Any absence of or incorrect connection of voltage measuring devices or other signals may lead to malfunctions and damage the unit the engine and or components connected to the unit Procedure 1 After w...

Страница 69: ...rotating field d After a successful check the Connect signal can be connected again 7 Check the dead bus start function Prior to checking the dead bus start function the output of the Connect signal m...

Страница 70: ...FR 1 Dimensions r1ww 2805 ab skf 50 130 96 8 90 130 72 65 27 35 Back view with connecting terminals Bottom view Back plate mounting optional please order brackets P N 8923 1023 Front view Configuratio...

Страница 71: ...voltage 1 2 5 kV 4 4 0 kV Measuring frequency 40 0 to 80 0 Hz Accuracy Class 1 Resistance 0 1 Linear measuring range 1 3 Vrated Input resistance 1 0 21 M 4 0 7 M Maximum power consumption per path 0...

Страница 72: ...tage 32 Vdc Minimum gate current 10 mA dc Maximum gate current 30 mA dc 0 5 Vdc Interface isolated Insulation voltage dependent on model 500 to 3 000 Vdc Version variable Housing Type APRANORM DIN 43...

Страница 73: ...0 to 32 0 MW 2 Accuracy depending on the configured transformer ratio Re active power Actual value in L1 L2 L3 32 0 to 32 0 Mvar 2 Accuracy depending on the configured transformer ratio Apparent power...

Страница 74: ...UX 4 3 11 Power factor cosphi dim less 100 24 25 13 26 27 MUX 5 1 12 Real power kW 26 27 14 28 29 MUX 5 2 13 Reactive power kvar 28 29 15 30 31 MUX 5 3 14 Busbar voltage L12 V 30 31 16 32 33 MUX 6 1 1...

Страница 75: ...rnal alarms 3 Bit 15 1 Bit 14 0 Power factor level 1 Bit 13 1 Bit 12 0 Power factor level 2 Bit 11 1 Bit 10 0 Inductive reactive power Bit 9 1 Bit 8 0 Capacitive reactive power Bit 7 1 Bit 6 0 Positiv...

Страница 76: ...52 53 MUX 9 2 25 Internal alarms 6 Bit 15 1 Bit 14 0 Ground fault Ve level 1 Bit 13 1 Bit 12 0 Internal Bit 11 1 Bit 10 0 Internal Bit 9 1 Bit 8 0 Internal Bit 7 1 Bit 6 0 Internal Bit 5 1 Bit 4 0 Gro...

Страница 77: ...point frequency fSetpoint Hz 100 3200 to 6800 7 08 09 5 10 11 Set point voltage VSetpoint V 0 to 480 8 10 11 6 12 13 free 1 The transmitted number has a sign When connected correctly capacitive induc...

Страница 78: ...sign measured in var data format two s complement positive inductive negative capacitive Frequency measured in Hz 100 Real energy 32 Bit measured in kWh data format two s complement positive exported...

Страница 79: ...corresponding bits for example bit 15 14 over frequency limit 2 will change from not tripped 0 1 to tripped 1 0 Framework Data for the Interfaces Framework Data for Modbus RTU Slave Transmitting prot...

Страница 80: ...dary 50 to 125 50 to 480 V 100 400 V GP K08 Volt transformer primary 00 100 to 65 000 kV 00 400 kV GPX GPX I GPY I GPY I N Volt transformer sec GN 50 to 125 50 to 480 V 100 400 V Volt transformer prim...

Страница 81: ...1 0 Zero voltage Busbar 1ph Generator 3ph Generator 3ph B1 G3 B1 G3 Zero voltage V ph ph 8 to 150 V 8 V Zero voltage Delay 0 02 to 99 98 s 0 25 s Zero voltage Hysteresis 0 to 99 V 1 4 8 V Release del...

Страница 82: ...2 Response 10 to 300 160 Earth current 2 Delay 0 02 to 99 98 s 0 04 s GP K08 Earth current Hysteresis 0 to 300 5 Overload Monitoring ON OFF ON 1 0 1 0 Overload Response v 0 to 150 120 Overload Delay 0...

Страница 83: ...ge relay allocation YES NO NO Y N Y N Funct relay 12 E R RE Funct relay 123 E R REE GPX GPX I GPY I GPY I N K08 Funct relay 45 E R EE GPX GPX I GPY I GPY I N K08 Funct relay 678 E R EEE Collect respon...

Страница 84: ...nalog output 2 OFF 20 to 20mA 0 to 20 mA 4 to 20 mA 20 to 20mA OFF 20mA 0 20mA 4 20mA OFF 20mA 0 20mA 4 20mA Analog output 2 cosphi Analog output c0 50 Analog output see table at the end of the list o...

Страница 85: ...equency 40 00 to 80 00 Hz Current L1 0 to 9 999 A Current L2 0 to 9 999 A Current L3 0 to 9 999 A Current AV 0 to 9 999 A Current max 0 to 9 999 A Current min 0 to 9 999 A Direct Cur 1 9 999 to 9 999...

Страница 86: ...ses your problem can be resolved over the phone If not you can select which course of action you wish to pursue based on the available services listed in this section Returning Equipment for Repair If...

Страница 87: ...partment in Stuttgart 49 711 789 54 0 They will help expedite the processing of your order through our distributors or local service facility To expedite the repair process contact Woodward in advance...

Страница 88: ...following international Woodward facilities to obtain the address and phone number of the facility nearest your location where you will be able to get information and service Facility Phone number USA...

Страница 89: ...oll free or local phone numbers e mail us or use our website and refer ence technical support Product Training is available on site from several of our worldwide facilities at your location or from GE...

Страница 90: ..._______________ Control see name plate Unit no and Revision P N ____________________ REV ____________ Unit type MFR 13____________________________________ Serial number S N ___________________________...

Страница 91: ...e 29 70565 Stuttgart Germany Phone 49 711 789 54 0 Fax 49 711 789 54 100 stgt info woodward com Homepage http www woodward com power Woodward has company owned plants subsidiaries and branches as well...

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