MOTOR PROTECTION RELAYS. for Total Peace of Mind

Transcription

1 MOTO POTECTIO ELAS for Total Peace of Mind

2 Switchgear Factory, avi Mumbai Larsen & Toubro is a technology-driven company that infuses engineering with imagination. The Company offers a wide range of advanced solutions in the field of Engineering, Construction, Electrical & Automation, Machinery and Information Technology. Switchgear Factory, Ahmednagar Switchgear Factory, Vadodara L&T Switchgear, a part of the Electrical & Automation business, is India's largest manufacturer of low voltage switchgear, with the scale, sophistication and range to meet global benchmarks. With over five decades of experience in this field, the Company today enjoys a leadership position in the Indian market with a growing international presence. It offers a complete range of products including powergear, controlgear, industrial automation, building electricals & automation, reactive power management, energy meters, and protective relays. These products conform to Indian and International Standards. L&T limited offers a wide range of umerical relays suitable for LV & MV power distribution systems. These relays are manufactured at L&T s Mysore works equipped with modern infrastructure and employing latest manufacturing and testing equipment. The selection of Motor Protection System should be based on the cost and application of the electric motor. Its appropriate selection not only prevents motor damage, but also ensures optimal process efficiency with minimal interruption. Pick the motor protection relay that meets your needs: Index MP200nX / MP300 Mini Motor Protection elay MM10 Compact Motor Protection elay MM30 Comprehensive Motor Protection elay MCOMP Intelligent Motor Control, Monitoring and Protection elay os Appendix i Article on fail-safe & non fail-safe logic 12 Appendix ii Product selection Guide 13 1

3 MP200nX / MP300 ew Technical specifications MP200nX / MP300 is a microcontroller based LT Motor protection relay. The relay has got inbuilt CTs for motor sizes up to 50KW (i.e. 88 A current) Protections offered: 49, 51L, 37, 64*, 46 Thermal Overload Earth Fault (MP300 only) Single Phasing, Current unbalance Phase sequence reversal Locked otor Under Current Application These relays are used for protection of motors widely used in fans pumps, crushers, mills, compressors, belt conveyors, centrifuges, mixers, ventilators, escalators, motorized valves etc. MP 300 offers you greater security, operator safety through proper co-ordination in case of earth fault on motor feeder. Features LED's for trip indication. 4 selectable trip time curves for thermal overload Test facility through front push button. Manual reset facility through front push button. With / Without fail safe mode.* *Model with fail-safe logic is available on request. For technical info on fail-safe logic refer Appendix i Parameters MP200nX / MP300 ASI nos. 49, 51L, 37, 64*, 46 Protections Description Thermal overload, Earth fault*, Single Phasing, Locked rotor, Under Current, Current Unbalance, Phase sequence reversal Current range 1-88 A Overload trip class 10A, 10, 20, 30 Auxiliary power supply 240 V AC +/- 20% 110V AC +/-20% Contacts 1 /O + 1 /C manual reset ated Voltage 250 V AC / 30 V DC Contact atings ated Current 5A ated breaking capacity 2000 VA / 240 W(esistive) Dimensions (W x H x D) in mm 70 x 85 x 106 Mounting DI ail Weight < 400 grams Operating Temperature 0 to 60 deg. C Accuracy As per IEC eference Standards IEC 60255, IEC and IEC * Available only in MP300 Wiring diagram Dimensions 106 Start /O Aux. /O Fuse In case of reversible starters; MP200nX / MP300 must be placed before the reversing contactors. Fuse Ø12-3 Places Stop (/C) MP200nX / MP3000 must sense Line Current in case of star Delta Starter MP200nX / MP300 C O Aux Supply Forward everse Line Delta Star 70 M Typical connection diagram for Direct Starting application 3Ø Motor 3Ø Motor 2 3

4 MM10 Technical specifications MM10 is a Compact Microprocessor based Motor Protection elay for medium and large size Motors Protections offered: 37, 46, 49, 50/ 51, 51L, 64 Thermal Overload With Warning Under Current Unbalance Phase Loss Phase Sequence eversal Earth Fault Prolong Starting, Locked otor Short Circuit Features 4 Digit LED display Measurement of, Zero Sequence current and Thermal capacity. Separate LED's for indication of Motor operational, Trip & Thermal OL/ pre-alarm status. Programmable thermal OL time constant right from 1 sec to 40 sec. 2 nos. of C/O output contacts. The relay 2 output is programmable type. It can be configured for following conditions: I) On any tripping ii) On thermal tripping iii) On thermal Warning elay output 1 works with fail-safe logic. For technical info on fail-safe logic, refer Appendix I 1 no. Programmable inary input for remote operation. It can be configured for either of these operations: I) Inhibit Motor Start ii) Trip eset iii) Instant Tripping elay testing facility Test push button to check working of relay contacts. Trip data recording Fault current or cause of last trip is displayed. Functions MM10 ASI nos. 37, 46, 49, 50/ 51, 51L, 64 Protections Description Thermal Overload With Warning, Short Circuit, Under Current, Unbalance, Phase Loss, Phase Sequence eversal, Earth Fault, Prolong Starting, Locked otor Metering Digital Input + Output Monitoring Auxiliary Supply Current Input inary Input Voltage ating I, I, I, I, Thermal Capacity O 1 DI + 2 CO Type DO Last 1 Trip V AC/DC 5 A CT secondary 12 V supplied internally ating 5 A, 250 VAC (cosφ = 1) Output Contact Operating time 15 ms Max Maximum Power Consumption urden on CT Operating Temperature Degree of Protection Weight Mounting Electrical life Mechanical life 1,00,000 Operations at I 6 5 x 10 Operations 3 VA typical 0.3 VA at ated Current -5⁰C to +55⁰C IP Kg Panel Mounted Dim W H D in mm Panel Cut Out in mm Wiring diagram Dimensions L3 L2 L1 F4 F1 F2 F3 K1 MM mm 9 1 Aux 10 2 L 96 mm 100 mm 90 mm 11 3 O Protection class CT S M inary Input C COM COM C O H1 S2 Stop S1 Start K1 K1 96 mm Front Side Panel Cutout 90 mm loack 1/ eset/ Trip External CT's - Protection class CT's [ Amps] with 5 Amp secondary 4 5

5 MM30 Technical specifications MM30 is a Microprocessor based Comprehensive Motor Protection elay. Functions MM30 ASI nos. 37, 46, 47, 48, 49, 50/51, 51L, 64, 66, 68, 74 Protections offered: 37, 46, 47, 48, 49, 50/51, 51L, 64, 66, 68, 74 Thermal Overload with Warning Over Current Under Current Unbalance Phase Loss Phase Sequence eversal Earth Fault Prolong Starting, Locked otor Protections Metering Digital Output Control Description Monitoring Temperature Communication Trip / Event record 5 Thermal Image with prealarm level Earth Fault Current Unbalance, Phase reversal, Single Phasing Locked otor, Prolong Starting Over Current o-load unning I, I, I, I, Thermal Capacity O 4 C/O + 1 C/O Starting Sequence Control Modbus TU on S485 Features AC, DC (±20%) Auxiliary Supply (Volts) AC, DC (±20%) Auto setting of parameters. y feeding just few parameters, other parameters can be automatically set. Draw out enclosure 8 digit alpha numeric display eal Time Measurements Measurement and display of actual and trip data recordings. 8 LED's for fault indication. Control on number of starts of motor Starting sequence control During start-up of the motor, the unit can control an output contact to automatically manage the starting transition. S485 port for communication on Modbus Protocol Current Input ating Output Contact Operating time 40 ms max Maximum Power Consumption urden on CT Electrical life 1/5 A CT Site selectable 5 A 1,00,000 operations at I 8.5 VA typical 0.2 VA for 5A, 0.01 VA for 1 A Wiring diagram Operating temperature Weight Mounting 10⁰C to 60⁰C < 2 kg Panel Mounted Construction Draw out Dim W H D in mm A C A C In=5A In=1A PESA/TAP 31: Ion=5A PESA/TAP 33: Ion=1A L/+ 12 / = Display Microp. MM30 Function F37 F46 F49 F51 F51 F64 St.o.> AI.0> Itr Progr. Int. Fault Keyboard C S- S+ 9 Pin Male / (21) (10).O..C. IEC 255.O..C. Panel Cut Out in mm Dimensions 164 Microelettrica Milano Scientifica Italia Mode Enter / eset Select Prog Panel Cut-out 113 x 142 (L x H)

6 MCOMP User Friendly Options & Features Main Unit Display Unit Expansion Module CM Unit In-built Voltage Module Enables power measurement & Motor re-acceleration Universal Operating environment Auxiliary supply range of VAC/VDC Metering Includes line, neutral & average current, line voltage & phase voltages, Power, Energy, Power Factor, Temperature, Thermal Capacity Monitoring Last 5 event & trip data recording with date & time stamping. ecording of o. of start, Stop, Starting Curve, starting time is also available. Communication MCOMP can be connected to Plant Control System (SCADA /DCS) through Modbus TU, Modbus TCP / IP & Profibus DP communication protocol Highly scalable IO 6 digital input and 4 changeover digital outputs are available in base unit. Digital inputs / Outputs can further be extended with the expansion modules. Analog output In-built 4-20mA output is available eliminates transducer & add-on module Temperature Monitoring Unit takes input from TD or PTC. MCOMP Suite It is software for local parameterization and monitoring of MCOMP elay. Users can create, save, read, and write the settings. COMP Logic It is a part of the MCOMP suite parameterization software. The user can program the required logic using different modules such as truth tables, signal conditioners, timers, and counters MCOMP is Intelligent Motor Control Centre (IMCC) elay. It has been designed as a reliable building block for low voltage, contactor - controlled motor starter feeders in switchgear assemblies. With the ability to quickly gather, organize and analyze information from your operations, our smart MCOMP elay allows you to: Maximize your asset availability and reduce downtime Enable an energy management strategy Protect your personnel and assets Further benefits are gained from wide communication capabilities that include Modbus TU, Profibus, Modbus TCP / IP. Advanced Features e-acceleration Excessive start time protection TD or PTC based temperature protection Communication failure protection Fail to stop protection Interlock as Stop//Trip The Main Unit This is a self-contained and fully functional unit housing the main processor, input/output board, current & voltage board and a communication board in a single module enclosure. The main unit is also equipped with i/tri color LED for status indication. There is also a reset push button available for local trip reset. OLED Display Unit The OLED display unit is a detachable optional unit provided with MCOMP for display of all metering, protection and fault data. The display unit can be additionally used to configure the installed MCOMP relay. The OLED display unit is provided with mini-us port on its front facia to enable local configuration through laptop using the MCOMP suite parameterization software supplied with the relay. To Modbus TU master device STP cable Current Module Unit MCOMP comes with its own current module in two sizes and suitable for use from kw. equisite connecting cable for the connection of MCOMP CM unit to its main unit is supplied along with CM unit. The MCOMP CM is pass-through type and hence there is no need of physical termination of power wire and CT shorting while removing the MCOMP relay. Expansion Unit The input/output capability of MCOMP relay can be increased from 6DI/4DO/1AO by using expansion unit available in three options as 4DI/2DO unit, 8DI unit and 5DI/2AI unit. The requisite connecting cable for the connection of expansion unit to it s main unit is supplied along with the expansion unit. IED 1 IED2 IED n MODUS TU DAIS CHAI CLOSED LOOP / EDUDAT COMMUICATIO COECTIO 8 9

7 PW/COMM MOTO STATUS ALAM/PICKUP TIP L Protection Typical Wiring Diagram MCOMP provides all basic current, voltage and frequency protection. It also provides motor-specific protection like locked rotor, number of starts, excessive start time, phase reversal and phase loss. It distinguishes between starting and running condition, and provides appropriate protection at the right time. It continuously monitors motor thermal capacity and trips the motor in case the thermal capacity gets consumed. It does not allow the motor to start unless thermal capacity is below the requisite safe threshold level. All protections are defined to cover the widest conceivable range of applications. MCOMP can also provide earth fault protection and sensitive earth fault protection. Sensitive earth fault protection is provided through an external CCT. The table below shows the setting range of protection available in MCOMP. COTACTO SFU/MCC STAT1 FUSE PH.VOLTAGE /- L/+ AUX.VOLT L/+ /- POTECTIO FUCTIO ASI CODE VAIALE AGE Thermal Overload 49 Pick Up % Iset % TM Under Current 37P Pick Up 30 85% Ir 110% of pick up Sec Over Current 50P Pick Up % Iflc 90% of pick up Sec Time Delayed Phase 51P Pick Up % Iflc Overcurrent 90% of pick up Time Constant Sec IEC Curves Inverse, Very Inverse, Extremely Inverse Time Delayed eutral 51 Pick Up % Iflc Overcurrent 90% of pick up Time Constant Sec IEC Curves Inverse, Very Inverse, Extremely Inverse Locked otor 50L Pick Up % Iflc 90% of pick up Sec Current Unbalance 46 Pick Up 5 100% Iflc % of pick up 1 30 Sec Phase Loss 47a Sec Earth Fault 50 Pick Up % Iflc (Vector Summation) 90% of pick up O Sec Sensitive Earth Fault 50SG Pick Up A (Through CCT) A Sec Under Voltage 27 Pick Up 20 85% Vn 110% of pick up Sec Over Voltage 59 Pick Up % Vn 95% of pick up Sec Voltage Unbalance 47 Pick Up 5 50% Vn 90% of pick up Sec Under Frequency 81L Pick Up 94 98% Fs 101% of pick up 1 30 Sec Over Frequency 81H Pick Up % Fs 99% of pick up 1 30 Sec Phase eversal 47b Sequence or Maximum umber 66 eference Period Min of Starts Permissive Starts 1 30 Inhibit Period Min TD/PTC Dimensions 61 DI1 62 DI2 STOP 63 DI3 ESET 64 DI4 65 DI5 66 DI6 67 COM CM UIT M CCT S1 S2 Component Main Unit Display Unit CM 1 CM 2-5 Expansion Unit Cut-out dimension of display unit Depth(mm) Width(mm) Height (mm) (with DI Clip) (with DI Clip) (with DI Clip) DIGITAL IPUTS TD/PTC AALOG O/P S D+ D- DIGITAL OUTPUT COTACTS COTACTO COIL TIP IDICATIO MODUS S485 LOOPIG 4-20mA OUTPUT TO FIELD AMMETE TI1 TI2 AO1 AO2 D+ D- S1 S2 M CCT DIGITAL IPUTS DIGITAL OUTPUT COTACTS ST ET COTACTO COIL TIP IDICATIO PW/COMM MOTO STATUS ALAM/PICKUP ST TIP MODUS S485 LOOPIG 4-20mA OUTPUT TO FIELD AMMETE M COMP L ET Mini US Port L/+ TD/PTC SFU / MCC FUSE /- L/ PH.VOLT AUX.VOLT COTACTO STAT1 61 DI1 STAT2 62 DI2 63 DI3 STOP 64 DI4 ESET 65 DI5 66 DI6 67 COM M COMP EXTEAL CT M COMP CM UIT TD/PTC AALOG O/P S485 /

8 Appendix i Appendix ii Fail-safe Logic In Motor protection relays(mp) with fail-safe logic, the relay contacts get energized upon application of auxiliary supply to MP. Product Selection Guide Parameters Model The relay contact gets de-energized in the following cases: 1. Auxiliary supply failure 2. Trip issued by MP as per protection settings MP with fail-safe logic: 1. Will disable the starting of motor in case auxiliary supply is not applied to the MP or there is an internal defect 2. Will trip the motor in case of auxiliary supply failure to MP or there is an internal defect in MP Control Wiring: Category Sub-Category MP200nX / MM10 MM30 MCOMP MP300 General Display 4 Digit LED Alphanumeric 4 line OLED Display Display Display Current Input CT Sec. Inbuilt CT 5A 1 / 5A site Its own CT up to 88A selectable unit up to 80A Thermal O/L (49) ü ü ü ü Earth Fault (51 / 64) ü (MP300 only) ü ü ü Phase reversal ü ü ü ü Phase unbalance (46) ü ü ü ü Single Phasing ü ü ü ü Locked rotor protection(51l) ü ü ü ü Protection Under current (37P) ü ü ü ü Aux. contact Overcurrent (51) x ü ü ü Max. no. of starts(66) x x ü ü /O contact of MP300/MP200nX/MM10 Short circuit (50) x ü ü x Sensitive Ground (50/51SG) x x x ü Frequeny (81O/U) x x x ü Voltage (27P/59P) x x x ü Phase Start P Stop P Input+Output asic 2 DO 1 DI+2 DO 4 DO 6 DI+4 DO Expandability options x x x ü coil Metering Current x ü ü ü V, f, power, energy x x x ü Monitoring Trip / Event record 1 5 5/5 Communication Modbus TU x x ü ü Modbus TCP/IP, Profibus x x x ü Implementing fail-safe logic in MP200nX/MP300: Select a Version of MP with fail-safe logic and do the control wiring as above. - ot available ü - Available Implementing fail-safe logic in MM10: elay Output 1 of MM10 works with fail-safe logic. Control wiring to be done as above. on fail-safe logic elay with non-fail safe logic does not trip the motor in case of auxiliary power supply failure. Application: ecommended in process plants where Motor shut down is not desired in case of failure of auxiliary power supply. 12

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