• Author / Uploaded
• Amílcar Duarte

Citation preview

User’s Manual PAC-E100S(IE) (Overcurrent and Earth Fault Relay)

PNC Technologies Co., Ltd.

PAC-E100S(Overcurrent and Earth Fault Relay)

Safety Caution It is contents to keep away user's safety and damage of property. Use rightly after read manual attentively. Manual will be kept in place that a person who use product can see well.

Caution

: Not following the instruction may result in serious injury or even death

Danger

: Not following the instruction may result in serious injury or property damage

Signs This sign indicates prohibition. This symbol indicates that the instruction must be followed.

1-2

PAC-E100S(Overcurrent and Earth Fault Relay)

Warnings Never perform wiring work while power is supplied or the product is running. There is a danger of electric shock.

Never perform wiring work while power is supplied or the product is running. There is a danger of electric shock.

Never touch the product with wet hands. There is a danger of electric shock.

Do not use the cable if the covering is damaged. There is a danger of electric shock.

Never perform wiring work if the main power line is active. There is a danger of electric shock, damages or fire by the charged voltage of the current transformer.

Do not disassemble the product even if power is not supplied except for wiring work or regular inspections. There is a danger of electric shock by the charged current inside the product.

Do not disassemble the product even if power is not supplied except for wiring work or regular inspections. There is a danger of electric shock by the charged current inside the product.

Use the terminal block when connecting the cables. There is a danger of electric shock by the exposed wires of the cable.

Cover the terminal at the rear terminal block after wiring work. There is a danger of electric shock.

1-3

PAC-E100S(Overcurrent and Earth Fault Relay)

Cautions Apply the rated power to the power terminal of the product. There is a danger of product damage and fire if the rated power is not used.

Adhere to the rated loads of the input and output contacts. There is a danger of product damage and fire if the rated load is not used.

Keep the product free of foreign substances such as screws, metals, water, oil, etc. There is a danger of product damage and fire.

Do not expose the product to direct sunlight. There is a danger of product damage.

Insert or remove the product into/from the case on a level place. There is a danger of product damage if it is handled on an uneven place.

Make sure that the product is normal before installing it. The product may become abnormal due to excessive shock during distribution.

Check the use environment of the product before installing it. Check the use environment and conditions of the product in this User Manual before installing it.

Perform regular and daily inspections. - Check any damages of the product. - Check the installation and terminal connections. - Check the product operation status and indications. - Check any problems such as abnormal sound and discoloration.

Always keep the product clean. Do not wipe the surface of the product cover too strongly. Stay clear of volatile chemicals (e.g., benzene, thinner).

Adhere to the specified location and test voltage when performing an insulation test. Always observe the test conditions in this User Manual because the test conditions may differ by model or terminal.

If you do not use the product for a long time, turn off the power, disconnect the cable, and pack the product. Then keep the product under the following conditions: - Ambient temperature: -30 ~ +75℃ - Daily average temperature: +35℃ or lower - Relative humidity: 90% or lower - No dusts, corrosive gases, salts, or harmful smokes - No vibration or shock - No moisture or direct sunlight

If the product breaks down or works abnormally, disconnect the power supply and call our after-sales service department. When you disuse the product, discard the product as a general industrial waste. 1-4

PAC-E100S(Overcurrent and Earth Fault Relay)

REVISIONS REV Date 1 2016-07-06

Description/Reason 1st release of English manual

1-5

PAC-E100S(Overcurrent and Earth Fault Relay)

Table of contents 1

OVERVIEW ..................................................................................................................................1-10 1.1 1.2 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.4 1.5 1.6 1.6.1 1.6.2 1.6.3 1.6.4 1.6.5 1.6.6 1.6.7 1.6.8 1.6.9 1.7 1.7.1 1.7.2 1.7.3 1.7.4 1.7.5 1.7.6 1.7.7

2

OPERATIONAL DESCRIPTION ...............................................................................................2-19 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.4.4 2.5 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.5.6 2.5.7 2.5.8

3

CHARACTERISTICS ...............................................................................................................1-10 APPLICATION ........................................................................................................................ 1-11 GENERAL SPECIFICATION .....................................................................................................1-12 Power supply ...................................................................................................................1-12 Current input ....................................................................................................................1-12 Contact outputs ................................................................................................................1-12 Contact inputs ..................................................................................................................1-12 Communication ...............................................................................................................1-12 TYPE TEST............................................................................................................................1-12 ENVIRONMENT .....................................................................................................................1-13 PROTECTION .........................................................................................................................1-13 Instantaneous/definite time overcurrent(50_1, 50_2, 50N_1, 50N_2) ............................1-13 Inverse time overcurrent(51, 51N) ..................................................................................1-14 Definite time negative phase sequence overcurrent(46) ..................................................1-14 Undercurrent (37) ............................................................................................................1-15 Thermal overload (49) .....................................................................................................1-15 Auto-reclosing(79)...........................................................................................................1-15 Circuit breaker failure(50BF) ..........................................................................................1-16 Cold load pick-up(COLD_LD)........................................................................................1-16 Inrush current detection(I2/I1) .........................................................................................1-16 ADDITIONAL FUNCTIONS ......................................................................................................1-17 Measurement ...................................................................................................................1-17 Recording ........................................................................................................................1-17 CB control .......................................................................................................................1-17 Setting Group ...................................................................................................................1-17 Self-diagnosis ..................................................................................................................1-18 Trip Circuit Supervision ..................................................................................................1-18 EasyLogic ........................................................................................................................1-18

FRONT PANEL.......................................................................................................................2-19 TOP DISPLAY ........................................................................................................................2-20 MENU NAVIGATION ..............................................................................................................2-21 DISPLAY.............................................................................................................................2-23 STATUS ...........................................................................................................................2-23 METERING ....................................................................................................................2-24 RECORD .........................................................................................................................2-24 SYS INFO .......................................................................................................................2-26 COMMAND ........................................................................................................................2-27 CONTACT OUT TEST ...................................................................................................2-27 EVENT CLEAR ..............................................................................................................2-27 WAVE CLEAR ................................................................................................................2-27 THERMAL CLEAR ........................................................................................................2-28 TRIP CNT EDIT..............................................................................................................2-28 CB MON CLEAR ...........................................................................................................2-28 CHANGE SG ..................................................................................................................2-28 PANEL TEST ..................................................................................................................2-29

FUNCTION ....................................................................................................................................3-30 3.1 GENERAL..............................................................................................................................3-30 3.2 SYSTEM ................................................................................................................................3-30 3.2.1 PASSWORD ....................................................................................................................3-30 1-6

PAC-E100S(Overcurrent and Earth Fault Relay)

3.2.2 POWER SYSTEM ..........................................................................................................3-30 3.3 PROTECTION .........................................................................................................................3-32 3.3.1 Phase/Ground Overcurrent(50_1, 50_2, 51, 50N_1, 50N_2, 51N) .................................3-32 3.3.2 Definite Time Negative Phase Sequence Overcurrent(46) ..............................................3-35 3.3.3 Undercurrent(37) .............................................................................................................3-36 3.3.4 Thermal Overload(49) .....................................................................................................3-36 3.3.5 Auto-reclosing(79)...........................................................................................................3-37 3.3.6 Circuit Breaker Failure(50BF) .........................................................................................3-41 3.3.7 Cold Load Pick-up(COLD_LD) ......................................................................................3-41 3.3.8 Inrush Current Detection(I2/I1) .......................................................................................3-42 3.4 ADDITIONAL FUNCTIONS ......................................................................................................3-44 3.4.1 Record .............................................................................................................................3-44 3.4.2 Circuit breaker control .....................................................................................................3-46 3.4.3 Setting Group Control .....................................................................................................3-46 3.4.4 Self-Diagnosis .................................................................................................................3-46 3.4.5 Trip Circuit Supervision ..................................................................................................3-47 3.4.6 CB Wear Monitor ............................................................................................................3-49 3.4.7 EasyLogic ........................................................................................................................3-50 3.4.8 Communication ...............................................................................................................3-52 3.4.9 System Time ....................................................................................................................3-53 4

APPLICATION EXAMPLE ........................................................................................................4-54 4.1 4.2

5

CONNECTION AND SETTING ..................................................................................................4-54 METERING ............................................................................................................................4-55

INSTALL AND EXTERNAL CONNECTION ...........................................................................5-56 5.1 DIMENSIONED DRAWINGS ....................................................................................................5-56 5.2 REAR TERMINAL ARRANGEMENT.........................................................................................5-59 5.3 EXTERNAL CONNECTIONS ....................................................................................................5-61 5.3.1 Current input connection .................................................................................................5-62 5.3.2 Contact input/output connection ......................................................................................5-65 5.3.3 RS-485 port connection(for COM1 or COM2) ...............................................................5-65

7

SETTING AND CONFIGURATION SOFTWARE ...................................................................7-66 7.1 SETTING SOFTWARE .............................................................................................................7-66 7.1.1 Setting Software Menu ....................................................................................................7-66 7.1.2 Communication Port Setting............................................................................................7-67 7.1.3 Device Selecting ..............................................................................................................7-67 7.1.4 System Configuration ......................................................................................................7-67 7.1.5 Protection Setting ............................................................................................................7-68 7.1.6 Contact In/Out Setting .....................................................................................................7-68 7.1.7 LED Setting .....................................................................................................................7-69 7.1.8 Monitor ............................................................................................................................7-69 7.2 EVALUATION SOFTWARE(EVALTOOL) ..................................................................................7-70 7.2.1 Menu or Icons ..................................................................................................................7-70 7.2.2 Waveform Display ...........................................................................................................7-71 7.2.3 Measuring ........................................................................................................................7-71

APPENDIX A. TC CHARACTERISTICS CURVES ........................................................................7-73

1-7

PAC-E100S(Overcurrent and Earth Fault Relay)

Figure Figure 1-1 Figure 2-1 Figure 2-2 Figure 3-1 Figure 3-2 Figure 3-3 Figure 3-4 Figure 3-5 Figure 3-6 Figure 3-7 Figure 3-8 Figure 3-9 Figure 3-10 Figure 3-11 Figure 3-12 Figure 3-13 Figure 3-14 Figure 3-15 Figure 3-16 Figure 3-17 Figure 3-18 Figure 3-19 Figure 4-1 Figure 4-2 Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 Figure 5-11 Figure 5-12 Figure 5-13 Figure 7-1 Figure 7-2 Figure 7-3 Figure 7-4 Figure 7-5 Figure 7-6 Figure 7-7 Figure 7-8 Figure 7-9 Figure 7-10 Figure 7-11 Figure A-1 Figure A-2 Figure A-3 Figure A-4 Figure A-5

Function diagram ................................................................................................................ 1-11 Front panel view .................................................................................................................2-19 LCD top display ..................................................................................................................2-20 Phase/ground overcurrent protection operating characteristic ............................................3-32 Logic diagram for instantaneous/definite time phase overcurrent(50_1, 50_2)..................3-33 Logic diagram for inverse time phase overcurrent(51) .......................................................3-33 Logic diagram for instantaneous/definite time ground overcurrent(50N_1, 50N_2) ..........3-34 Logic diagram for inverse time ground overcurrent(51N) ..................................................3-34 Logic diagram for negative phase sequence overcurrent(46) .............................................3-35 Logic diagram for undercurrent(37) ...................................................................................3-36 Logic diagram for thermal overload(49) .............................................................................3-37 Auto-reclosing timing chart for 2nd reclosing success ........................................................3-38 Auto-reclosing timing chart for CB close failuire.............................................................3-39 Auto-reclosing timing chart for 2nd reclosing fail .............................................................3-40 Logic Diagram for circuit breaker failure(50BF)..............................................................3-41 Logic Diagram for cold load pickup .................................................................................3-42 Logic diagram for inrush current detection.......................................................................3-43 E3RSetTM event record ......................................................................................................3-44 E3RSetTM waveform analysis ............................................................................................3-45 Concept of trip circuit supervision ....................................................................................3-47 CB maintenance curve ......................................................................................................3-49 Logic block for contact output ..........................................................................................3-50 Example connection diagram..............................................................................................4-54 Phase sequence current vector diagram ..............................................................................4-55 PAC-E100S dimensioned drawings ....................................................................................5-57 PAC-E100S(IE) dimensioned drawings ..............................................................................5-58 PAC-E100S rear terminal view ...........................................................................................5-59 PAC-E100S(IE) rear terminal view ....................................................................................5-60 PAC-E100S connection diagram ........................................................................................5-61 PAC-E100S 2CT connection for ungrounded network .......................................................5-62 PAC-E100S 2CT and GCT connection for sensitive ground fault detection ......................5-62 PAC-E100S 3CT connection for grounded network ...........................................................5-63 PAC-E100S(IE) Rogowski coil CT or LPCT connection ...................................................5-63 PAC-E100S(IE) RJ45 signal assignment ..........................................................................5-64 PAC-E100S(IE) CT selection............................................................................................5-64 Contact input/output connection .......................................................................................5-65 RS-485 port connection ....................................................................................................5-65 COM Port setting ................................................................................................................7-67 System configuration ..........................................................................................................7-67 Protection setting ................................................................................................................7-68 Contact input/output setting ................................................................................................7-68 Programmable LED setting.................................................................................................7-69 Monitoring ..........................................................................................................................7-69 Overview of EvalTool .........................................................................................................7-70 Channel select .....................................................................................................................7-71 Fundamental measuring ......................................................................................................7-71 Harmonic component measuring ......................................................................................7-72 Delta time measuring ........................................................................................................7-72 IEC NI TC Curve ...............................................................................................................7-75 IEC VI TC Curve ...............................................................................................................7-76 IEC EI TC Curve ................................................................................................................7-77 IEC LI TC Curve ................................................................................................................7-78 ANSI I TC Curve ...............................................................................................................7-79 1-8

PAC-E100S(Overcurrent and Earth Fault Relay)

Figure A-6 Figure A-7 Figure A-8 Figure A-9 Figure A-10 Figure A-11 Figure A-12 Figure A-13 Figure A-14 Figure A-15

ANSI SI TC Curve .............................................................................................................7-80 ANSI LI TC Curve .............................................................................................................7-81 ANSI MI TC Curve ............................................................................................................7-82 ANSI VI TC Curve ............................................................................................................7-83 ANSI EI TC Curve ...........................................................................................................7-84 ANSI DI TC Curve...........................................................................................................7-85 KNI(KEPCO Normal Inverse) TC Curve ........................................................................7-86 KVI(KEPCO Very Inverse) TC Curve .............................................................................7-87 TC Curve for Thermal Overload Protection : Cold ..........................................................7-88 TC Curve for Thermal Overload Protection : Hot 40% ...................................................7-89

\

Table Table 1-1 Device number/function ....................................................................................................... 1-11 Table 2-1 Front panel description .........................................................................................................2-19 Table 2-2 LCD top measurement items ................................................................................................2-20 Table 2-3 Menu navigation window .....................................................................................................2-22 Table 2-4 Metering display ...................................................................................................................2-24 Table 2-5 Event list ...............................................................................................................................2-24 Table 3-1 PAC-E100S(IE) Phase/Ground CT scale dip switch setting> ..............................................3-31 Table 3-2 Self-diagnosis items .............................................................................................................3-47 Table 3-3 EasyLogic setting .................................................................................................................3-50 Table 3-4 EasyLogic input table ...........................................................................................................3-50 Table 4-1 Power System Setting ...........................................................................................................4-54 Table 4-2 Current input for test ............................................................................................................4-54 Table 5-1 PAC-E100S rear terminal arrangement ................................................................................5-59 Table 5-2 PAC-E100S(IE) rear terminal arrangement ..........................................................................5-60 Table 7-1 Setting software menu ..........................................................................................................7-66

1-9

PAC-E100S(Overcurrent and Earth Fault Relay)

1

Overview

PAC-E100S, Overcurrent & Earth Fault Relay is a microprocessor-based numerical protection relay designed for the management and protection of a distribution feeder. PAC-E100S has the protection elements of overcurrent (50/51), ground overcurrent (50N/51N), thermal overload(49), undercurrent(37) and negative phase sequence overcurrent(46), autoreclosing(79), CB failure(50BF), cold load pickup, and inrush current detection. It has 4 standard IEC TC curves (normal inverse, very inverse, extremely inverse, long-time inverse), 7 standard ANSI TC curves and 2 KEPCO’s induction type TC curves (KEPCO normal inverse, KEPCO very inverse). Also it provides the measurements of 3 phase currents, sequence current, 2nd harmonic current, frequency, CB trip counter, CB wear monitoring and control functions for a circuit breaker. PAC-E100S can be used for protection of motor because it has the protection elements of thermal overload, undercurrent, and negative phase sequence overcurrent for motor. Programmable logic is designed for the replacement of external wiring for the sequence logic. The configurations of contact inputs/outputs and programmable LEDs are very easy by keypad or configuration software, E3RSet. Programmable Logic is specially designed funtion for easy maintenance and operation of PAC-E100S.

1.1

Characteristics  Numerical-type phase overcurrent(50/51), ground overcurrent(50N/51N), thermal overload(49), undercurrent(37), negative phase sequence overcurrent(46) protection and inrush current detection based on 2nd harmonic current.  Various TC curves including 4 IEC curves, 7 ANSI/IEEE curves, 2 KEPCO’s induction-type compatible curves  Cold load pick-up funtuion with auto-pickup multiplier control  Digital indication of setting and metering on LCD (2 Lines × 16 Characters)  Self-diagnosis, internal status monitoring, CB wear monitoring, trip circuit supervision  Operation blocking of individual protection element by external contact inputs during the relay maintenance  Configurable power system frequency (50Hz or 60Hz)  4 setting groups with auto-changing logic  Easy setting of contact outputs ,programmable LEDs and user logic by E3RSet.  Event recording up to 700 events and fault waveforms recording up to 16sec @50Hz.  Useful PC software(E3RSet) : system configuration, svent and fault waveforms analysis, protection setting, monitoringm measurement  Self-test function of contact output by manual trip emulation  Access security by password for setting change.  Communication - USB RS-232(Front), 2 RS-485 (rear, SCADA Communication) - Protocol: ModbusRTU, DNP3.0, IEC 60870-5-103  Metering: 3 phase current, phase sequence current, 2nd harmonic current for each feeder.  Free selection of control source voltage (19~130Vdc or 110~240Vac/dc)  EMI/EMC performance reinforced. 1-10

PAC-E100S(Overcurrent and Earth Fault Relay)

1.2

Application

PAC-E100S

52

50_1 50_2

51

50BF

50N_1 50N_2

51N

79

46

37

49

INRUSH

Metering

Figure 1-1 Function diagram

Table 1-1 Device number/function

ANSI Device Number 50_1, 50_2 51 50N_1, 50N_2 51N 46 37 49 79 50BF INRUSH

Function Instantaneous/definite time phase overcurrent protection Inverse phase overcurrent protection Instantaneous/definite time ground overcurrent protection Inverse ground overcurrent protection Definite time negative phase sequence overcurrent protection Undercurrent protection Thermal overload protection Auto-reclosing Breaker failure protection Inrush current detection

1-11

PAC-E100S(Overcurrent and Earth Fault Relay)

1.3 1.3.1

General Specification Power supply

Input Voltage Power Consumption

1.3.2

Current input

Nominal Frequency Phase CT Secondary Ground CT Secondary Input Range Burden Current Withstand

1.3.3

50/60 Hz 5 A or 1A 5 A or 1A 0.1~250 A(5 A rated), 0.01~50 A(1 A rated) less than 0.5 VA per phase 1 sec at 100 times rated , 2 sec at 20 times rated , continuous at 3 times rated

Contact outputs

Number Make and Carry Breaking Capacity

1.3.4

110~220 VAC±20 %, 50/60 Hz, 80~300 VDC or 19~130 VDC less than 15 VA

3 NO, 2 NO/NC, configurable 16 A continuous, 250 VAC 30 A, 0.5 sec, 125 VDC, resistive load 5 A, L/R of 25 msec, 125 VDC

Contact inputs

Number Voltage Range On/Off Voltage Level

1(for TCS), 7(configurable) 250 VDC maximum Control Voltage On Level Off Level

Recognition Time

1.3.5

110~220 VDC ≥ 80 V ≤ 60 V

less than 10 msec

Communication

Front Panel Rear Panel

1.4

24/48 VDC ≥ 19 V ≤ 14 V

USB RS-232, 38400 bps (fixed), ModbusRTU protocol 2 Galvanic isolated RS-485, 300~57600 bps COM1 : ModbusRTU/DNP3.0/ IEC60870-5-103 COM2 : ModbusRTU(for remote setting)

Type Test

Insulation Oscillatory Transient Surge Immunity Fast Transient Electrostatic Discharge RFI Susceptibility Vibration Shock Seismic Humidity(non-condensing)

IEC 60255-5, ANSI/IEEE C37.90.0 IEC 60255-22-1, ANSI/IEEE C37.90.1 IEC 60255-22-5 class Ⅳ IEC 60255-22-4 class Ⅳ, ANSI/IEEE C37.90.1 IEC 60255-22-2 class Ⅲ IEC 60255-22-3 class Ⅲ, ANSI/IEEE C37.90.2 IEC 60255-21-1 class Ⅱ IEC 60255-21-2 class Ⅱ IEC 60255-21-3 class I, IEC60068-3-3 56days, 93 %, +40 °C, IEC60068-2-78

1-12

PAC-E100S(Overcurrent and Earth Fault Relay)

1.5

Environment

Carrying and Storage Operating Temperatures Altitude The others

1.6 1.6.1

-30 °C~+75 °C -25 °C~+70 °C up to 2000 m No abnormal vibration, shock, slope and magnetic field No explosiveness dust, inflammable dust, inflammable/ Corrosiveness dust and salt

Protection Instantaneous/definite time overcurrent(50_1, 50_2, 50N_1, 50N_2)

Setting Pickup Current Operating Delay

0.50~100.00 A, 0.05 step*) 0.00~300.00 sec, 0.01 step

Accuracy Pickup Current Operating Time Dropout Level Dropout Time

2 % of setting value or 70 mA 3 % or ±35 msec of setting value, @ 2xpickup current 96~98 % of pickup current less than 40 msec

*)

for 1A rated or E100S(IE), all value should be divided by 5

1-13

PAC-E100S(Overcurrent and Earth Fault Relay)

1.6.2

Inverse time overcurrent(51, 51N)

Setting Pickup Current Time Multiplier Operating Delay (Definite Time)

0.50~100.00 A, 0.05 step*) 0.01~10.00, 0.01 step 0.00~300.00 sec, 0.01 step

Trip Characteristic Curve IEC 60255-3, ANSI/IEEE, KEPCO       K T = + C  × TM (sec ) L  G       − 1 G  S   T K,C,L,M G GS TM

: Trip time in second : Constants : Current input : Pickup current setting : Time multiplier Curve K L IEC Normal Inverse 0.14 0.02 IEC Very Inverse 13.50 1.00 IEC Extremely Inverse 80.00 2.00 IEC Long Inverse 120.00 1.00 ANSI Inverse 8.9341 2.0938 ANSI Short Inverse 0.2663 1.2969 ANSI Long Inverse 5.6143 1 ANSI Moderately Inverse 0.0103 0.02 ANSI Very Inverse 3.922 2 ANSI Extremely Inverse 5.64 2 ANSI Definite Inverse 0.4797 1.5625 KEPCO Normal Inverse 0.11 0.02 KEPCO Very Inverse 39.85 1.95 Trip time for G/Gs ≥20 are identical to those for G/Gs = 20. Accuracy Pickup Current Operating Time Dropout Level Dropout Time *)

C

0.00 0.00 0.00 0.00 0.17966 0.03393 2.18592 0.0228 0.0982 0.02434 0.21359 0.42 1.08

2 % of setting value or 70 mA 3 % or ±35 msec of setting value 96~98 % of pickup current less than 40 msec for instantaneously reset setting

for 1A rated or E100S(IE), all value should be divided by 5

1.6.3

Definite time negative phase sequence overcurrent(46)

Setting Pickup Current Operating Delay

0.50~100.00 A, 0.05 step*) 0.00~180.00 sec, 0.01 step

Accuracy Pickup Current Accuracy Operating Time Accuracy Dropout Level Dropout Time

2 % of setting value or 70 mA 3 % or ±35 msec of setting value, @ 2xpickup current 96~98 % of pickup current less than 40 msec 1-14

PAC-E100S(Overcurrent and Earth Fault Relay)

*)

for 1A rated or E100S(IE), all value should be divided by 5

1.6.4

*)

Undercurrent (37)

Setting Pickup Current Operating Delay

0.10~5.00 A, 0.05 step*) 0.00~180.00 sec, 0.01step

Accuracy Pickup Current Accuracy Operating Time Accuracy Dropout Level Dropout Time

2 % of setting value or 70 mA 3 % or ±35 msec of setting value, @ 0xpickup current 102~104 % of pickup current less than 40 msec

for 1A rated or E100S(IE), all value should be divided by 5

1.6.5

Thermal overload (49)

Setting K-Factor for IEC 60255-8 Time Constant(τ) Thermal Alarm

0.10~4.00, 0.01 step 1.0~999.9 min, 0.1 step 50~100 %, 1 step

Trip Characteristic Curve(for I/k•IN

3-31

PAC-E100S(Overcurrent and Earth Fault Relay)

3.3

Protection

Protection component setting of PAC-E100S is attained through SETTING/PROTECTIONn. n means setting group. ‘**’ denote current setting group. Each protection group consist of IOC1(50_1), IOC2(50_2), TOC(51), IOCG1 (50N_1), IOCG2 (50N_2), TOCG (51N), THERMAL (49), UC(37), NSOC(46), AREL(79), CBF(50BF), COLD LD and INRUSH. FUNCTION, BLOCK All protection components have setting item, FUNCTION, BLOCK commonly. During ‘FUNCTION’ is set to ‘DISABLE’, it’s protection does’t operate until ‘FUNCTION’ is set to ‘ENABLE’. But if ‘FUNCTION’ is set to ‘ENABLE and ‘BLOCK’ is set to any logic condition, it’s protection is blocked only while ‘BLOCK’ logic input is logic ‘1’.

3.3.1

Phase/Ground Overcurrent(50_1, 50_2, 51, 50N_1, 50N_2, 51N)

Phase overcurrent protection consist of instantaneous/definite time phase overcurrent(50_1, 50_2) and 1 inverse time phase overcurrent(51). Ground overcurrent protection also consist of 2 instantaneous/definite time ground overcurrent(50N_1, 50N_2) and 1 inverse time ground overcurrent (51N). If user combine the 3 components, it is possible to make 3-stage protection sheme. The minimum operating time of instantaneous/definite time overcurrent is below 40msec. The supported characteristic curves of inverse time overcurrent are 4 IEC 60255-3, 6 ANSI/IEEE C37.112, and 2 KEPCO curves. The current input of ground overcurrent are equipped with 3 phase CT residual connection. For detailed characteristic curve of inverse time overcurrent, refer to Appendix A. Time characteristics curve.

Figure 3-1 Phase/ground overcurrent protection operating characteristic

3-32

PAC-E100S(Overcurrent and Earth Fault Relay)

>

IA IB IC

50_n_PKP_A event ------------------------------

0

T

50_n_OP_A event ------------------------------

SETTING

FUNC BLOCK TION

PICKUP

DELAY

Figure 3-2 Logic diagram for instantaneous/definite time phase overcurrent(50_1, 50_2)

>

IA IB IC

51_PKP_A 0

T event

DT

------------------------------

51_OP_A

CURVE

event ------------------------------

SETTING

FUNC BLOCK TION

PICKUPDELAY CURVE

MULTIP LIER

Figure 3-3 Logic diagram for inverse time phase overcurrent(51)

3-33

PAC-E100S(Overcurrent and Earth Fault Relay)

>

IN

50N_n_PKP event ------------------------------

0

T

50N_n_OP event ------------------------------

SETTING

FUNC BLOCK TION

DELAY

PICKUP

Figure 3-4 Logic diagram for instantaneous/definite time ground overcurrent(50N_1, 50N_2)

>

IN

51N_PKP 0

T event

DT

------------------------------

51N_OP

CURVE

event ------------------------------

SETTING

FUNC BLOCK TION

PICKUP DELAY CURVE

MULTIP LIER

Figure 3-5 Logic diagram for inverse time ground overcurrent(51N)

SETTING/PROTECTIONn/IOC1(50_1), IOC2(50_2) SETTING/PROTECTIONn IOCG1(50N_1), IOCG2(50N_2) Setting Item Range(Step) Unit Description FUNCTION ENABLE, DISABLE Whether function use or not PICKUP 0.50 ~ 100.00 (0.05) *) A Pickup current DELAY 0.00 ~ 300.00(0.01) sec Operating delay time BLOCK EasyLogic input table Protection blocking condition *) for 1A rated or E100S(IE), all value should be divided by 5 SETTING/PROTECTIONn/TOC(51) SETTING/ PROTECTIONn/TOCG(51N) Setting Item Range(Step) FUNCTION ENABLE, DISABLE

Unit

Description Whether function use or not 3-34

PAC-E100S(Overcurrent and Earth Fault Relay)

CURVE

Inverse curve setting. DT : definite time IEC_NI : IEC Normal Inverse IEC_VI : IEC Very Inverse IEC_EI : IEC Extremely Inverse IEC_LI : IEC Long Inverse ANSI_I : ANSI inverse ANSI_SI : ANSI short inverse ANSI_LI : ANSI long inverse ANSI_MI : ANSI moderately inverse ANSI_VI : ANSI very inverse ANSI_EI : ANSI extremely inverse ANSI_DI : ANSI definite inverse KNI : KEPCO normal inverse KVI : KEPCO very inverse PICKUP 0.50 ~ 100.00 (0.05) *) A Pickup current MULTIPLIER 0.01 ~ 10.00 (0.01) Time multiplier for inverse curve DELAY 0.00 ~ 300.00(0.01) sec delay time for definite time curve BLOCK EasyLogic input table Protection blocking condition *) for 1A rated or E100S(IE) , all value should be divided by 5

3.3.2

DT, …, KVI

Definite Time Negative Phase Sequence Overcurrent(46)

Ngative phase sequence overcurrent protection is applied to detect unbalance fault that ground overcurrent protection component does not detect The pickup value(I2) of negative phase sequence overcurrent protection is

1 I 2 = ( IA + a 2 IB + aIC ) , for ABC phase rotation. 3 The minimum operating time is below 40msec. The operating characteristic is definite time. I2 : Negative sequence phase current

IA IB IC

I2 Calculat e

I2

>

46_PKP event ------------------------------

0

T

46_OP event ------------------------------

SETTING

FUNC BLOCK TION

DELAY

PICKUP

Figure 3-6 Logic diagram for negative phase sequence overcurrent(46)

SETTING/ PROTECTIONn/ NSOC(46) Setting Item Range(Step) FUNCTION ENABLE, DISABLE PICKUP 0.50 ~ 100.00 (0.05) *)

Unit A

Description Whether function use or not Pickup current(I2) 3-35

PAC-E100S(Overcurrent and Earth Fault Relay)

DELAY 0.00 ~ 180.00(0.01) sec Operation delay time BLOCK EasyLogic input table Protection blocking condition *) for 1A rated or E100S(IE), all value should be divided by 5

3.3.3

Undercurrent(37)

Undercurrent detects the fault using phase current values. This element is operated with time delay when phase currents are below the pickup settingt value. This element is used, for example, to protect the situation of motor breakdown causing current decrease.

IA IB IC




49_ALM

I

event ------------------------------

>

49_TRIP event

100%

SETTING

FUNC BLOCK TION

K-FACT TIME OR CONST

------------------------------

ALARM

Figure 3-8 Logic diagram for thermal overload(49)

SETTING/ PROTECTIONn/ THERMAL(49) Setting Item Range(Step) Unit FUNCTION ENABLE, DISABLE K-FACTOR 0.10 ~ 4.00 (0.01) TIME CONST 1.0 ~ 99.9(0.1) min ALARM 50~100(1) % BLOCK EasyLogic input table

3.3.5

Description Whether function use or not k factor for CT Rating Temperature rise time const Thermal alarm level Protection blocking condition

Auto-reclosing(79)

Auto-reclosing has maximum 5 shots. Prepare condition/start condition of auto-reclosing can set freely through EasyLogic. After auto-reclosing function is set to ‘ENABLED’ and ’79 ACTIVE’ control LED of front is ON, 79 operating sequence are as follows. (1) Prepare condition : if preparation condition (PRE CON) is satisfied for prepare time (PRE TIME) then 79 enter “79_READY” state. (2) In “79_READY” state, 79 check start condition (START CON) and enter “79_IN_PROG” state if satisfied. Start condition is for example overcurrent trip. (3) In “79_IN_PROG” state, 79 start 1st delay timer(1ST DELAY) and command CB close control(CB1_CLS_CTRL) after 1st delay timer is expired. (4) CB close check : after CB close contact ouput is energized, 79 check CB closing status for discriminating time (RECL TIME). If CB does not closed after discriminating timer (RECL TIME) is expired, then 79 enter “79_FAIL” state. If CB closing is success, then 79 start reclaim timer(RECL TIME) and check trip. (5) If CB is not trip until reclaim timer(RECL TIME) is expired, then 79 complete it’s sequence with “79_SUCCESS”. If CB is tripped during reclaim timer(RECL TIME) run, 79 enter next delay(1ST DELAY) if any shot number are remained, else stop 79 sequence with “79_SUCCESS”. Repeat from (3) to (5) until remained “SHOT NUM” is 0. 3-37

PAC-E100S(Overcurrent and Earth Fault Relay)

PRE TIME

PRE CON

START CON DELAY1

DELAY2

CB Close (DI) DISC TIME

DISC TIME

DISC TIME RECL TIME

RECL TIME

RECL TIME

79_READY

79_IN_PROG

79_FAIL Figure 3-9 Auto-reclosing timing chart for 2nd reclosing success

3-38

PAC-E100S(Overcurrent and Earth Fault Relay)

PRE TIME

PRE CON

START CON DELAY2

DELAY1

CB Close (DI) DISC TIME

DISC TIME

DISC TIME RECL TIME

RECL TIME

RECL TIME

79_READY

79_IN_PROG

79_FAIL

Figure 3-10 Auto-reclosing timing chart for CB close failuire

3-39

PAC-E100S(Overcurrent and Earth Fault Relay)

PRE TIME

PRE CON

START CON DELAY2

DELAY1

CB Close (DI) DISC TIME

DISC TIME

DISC TIME RECL TIME

RECLTIME

RECL TIME

79_READY

79_IN_PROG

79_FAIL Figure 3-11 Auto-reclosing timing chart for 2nd reclosing fail

SETTING/PROTECTn/AREL(79) Setting Item Range(Step) FUNCTION ENABLED, DISABLED SHOT NUM 1 ~ 5(1) PRE CON EasyLogic input table START CON EasyLogic input table PRE TIME 0.05 ~ 200.00(0.01) DISC TIME 0.01 ~ 5.00(0.01) RECL TIME 0.01 ~ 350.00(0.01) 1ST ~5TH DELAY 0.01 ~ 300.00(0.01) BLOCK EasyLogic input table

Unit

sec sec sec sec

Description Whether function use or not Reclosing shot count Reclosing prepare condition Reclosing start condition Reclosing prepare time Discriminating time Reclosing reclaim time Reclosing delay time Protection blocking condition 3-40

PAC-E100S(Overcurrent and Earth Fault Relay)

3.3.6

Circuit Breaker Failure(50BF)

Circuit breaker failure is secondary protection component which is activated by trip contact output. If the circuit breaker does not trip after trip contact output is issued by PAC-E100S’s primary protection components, 50BF output trip signal for the purpose of backup tripping. Trip relay can be set at SETTING/SYSTEM/POWER SYSTEM/TRIP RELAY menu.

IA

>

IB

>

IC

>

0

T

50BF_OP event

SETTING

FUNC BLOCK TION

------------------------------

PICKUP

DELAY

Figure 3-12 Logic Diagram for circuit breaker failure(50BF)

SETTING/ PROTECTn/ CBF(50BF) Setting Item Range(Step) Unit Description FUNCTION ENABLED, DISABLED Whether function use or not PICKUP 0.50 ~ 5.00(0.05) *) A Current Pickup DELAY 0.00 ~ 60.00(0.01) sec Delay time after Trip output BLOCK EasyLogic input table Protection blocking condition *) for 1A rated or E100S(IE), all value should be divided by 5

3.3.7

Cold Load Pick-up(COLD_LD)

When line, transformer or reactor is switched on, the inrush current is introduced. The inrush current may lead relay to mal-operation. Cold load pickup is the control function which detects the switch-off time, having operation/reset delay timer. Cold load pickup is pickuped after all of 3 phase current value drop below setting value and start OP DELAY timer. After OP DELAY timer has expired, ‘COLD_LD OP’ signal is actived and maintained until at least 1 phase current value is greater than setting value and RST DELAY timer has expired. During Cold Load Pickup is operating, all overcurrent protection(50_1, 50_2, 51, 50N_1,50N_2,51N,46) pickup values are multiplied by OC PKP MUL setting value.

3-41

PAC-E100S(Overcurrent and Earth Fault Relay)

IA