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M-5072-SP.pdf

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M-5072 Retrofit Kit For M-4272 Digital Motor Bus Transfer System SYNCRHONIZING ã Adapts M-4272 Digital Motor Bus Transfer System as a replacement for existing analog motor bus transfer equipment ã Provides direct mechanical and electrical replacement of existing analog transfer logic controller M-0272/M-0236B ã Connects easily to the M-4272's terminals without any wiring change ã The physical change is simple and cost effective ã Enhances the security, reliab
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  M-5072 Retrofit Kit ForM-4272 Digital Motor BusTransfer System SYNCRHONIZING Adapts M-4272 Digital Motor Bus Transfer System as areplacement for existing analog motor bus transfer equipmentãProvides direct mechanical and electrical replacement ofexisting analog transfer logic controller M-0272/M-0236BãConnects easily to the M-4272's terminals without any wiringchangeãThe physical change is simple and cost effectiveãEnhances the security, reliability and performance of yourfacility with additional features in the digital motor bustransfer equipmentãOptional M-3919 Graphic Display Unit (GDU) and Touch ScreenHuman Machine Interface (HMI) for communicating with one ortwo M-4272 units Industry Leader Since 1969Made in the USA   –2–M-5072 Retrofit Kit M-4272 Features The new M-4272 Digital Motor Bus Transfer System combines our decades of operating experience in thisfield and our proven relay hardware platform to provide the most comprehensive and cost effective DigitalMotor Bus Transfer equipment available. A comparison of the M-4272 and M-0272/M-0236B is presented inFigure 1.  Automatically selects transfer type:- Fast transfer - In-phase transfer - Residual voltage transfer - Fixed time transfer  Automatically selects transfer type:- Fast transfer - In-phase transfer - Residual voltage transfer  Comparison of Digital M-4272 and Analog M-0272 & M-0236BM-4272 M-0272 & M-0236B Manually selects transfer type:- Fast transfer - In-phase transfer - Residual voltage transfer Manually selects transfer type:- Fast transfer - In-phase transfer - Residual voltage transfer Manual Hot parallel transfer Not included, had to be performed externallyLoad Shedding:- Fast transfer - In-phase transfer - Residual voltage transfer - Fixed time transfer Load Shedding:- Residual voltage transfer Breaker failure (using breaker status contacts)Not included, had to be done externally Automatic transfer bi-directional Automatic transfer only one directionTrip and Close coil monitoringNot included, had to be done externally16/32 samples/cycle waveform measurementfollowing bus frequency decay rate yields higher accuracy for phase angle displacement andfrequency rate-of-change calculations. Patentedalgorithm used for zero crossing prediction under dynamic condition produces much higher accuracy for In-Phase transfer operation whichresulted in minimum closing angle error.2 samples/cycle sample-and-hold technique for waveform measurement.Bus voltage measurement maintains accuracydown to 4 Hz; thus it produces more preciseresidual voltage transfer level and reduces inrushcurrent. More motors can be carried over under this condition.Residual voltage transfer level is set usingpotentiometer.- 81 Under-frequency function- 81R Rate of Change of Frequency function- 60FL Bus VT Fuse-Loss- 50BF Breaker FailureNoneFour 27B SettingsSingle Automatic Undervoltage Transfer (27B)Physical size: 19” rack mount 4u height19” rack mount 7u height Figure 1 (1 of 2) M-4272 Feature Comparison to M-0272/M-0236B   –3–M-5072 Retrofit Kit Comparison of Digital M-4272 and Analog M-0272 & M-0236BM-4272 M-0272 & M-0236B 18 Inputs- 6 Inputs (52a, 52b and 52sp) for two breaker positions- 12 User programmable Inputs8 Inputs- 2 Inputs (52a) for two breaker positions- 1 Input for protective relay initiate- 1 Input for remote manual initiate- 1 Input for external lockout- 1 Input for auto transfer enable- 1 Input for external reset- 1 Input for auto trip enable2 Current InputsNonePower Supply Options:- 24/48 V dc- 120/240 V ac or 125/250 V dc 125 V dc Power SupplyM-3872 ISScom™ Communications Software:- Entering / Modifying Settings- Metering of all measured inputs, measured and calculated quantities- Mimic Single Line Diagram- Sequence of Event logs- Transfer Event Log- Phasor Diagram- Synchroscope- Oscillograph recordingNoneISSlogic ®  for programming additional non-standard applications and conditions if needed.Fixed standard transfer logic.18 Output Contacts- 4 contacts (2 trip and 2 close) for Main and Startup sources- 1 contact for power supply (P/S)- 1 contact for self-test- 1 contact for lockout/blocking- 11 User programmable output contacts7 Output Contacts- 4 contacts (2 trip and 2 close) for Main and Startup sources- 1 contact for power supply (P/S)- 1 contact for lockout/blocking- 1 contact for load shed9 Voltage Inputs can be connected:1-Phase Line to GroundOR1-Phase, Phase to Phase for Main, Busand New Source Voltages3-Phase Line to GroundOR3-Phase Open Delta for Main, Bus andNew Source Voltages3 Voltage Inputs can be connected:1-Phase Line to GroundOR 1-Phase, Phase to Phase for Main, Bus and New Source VoltagesNoneISSplot ®  Oscillography Analysis software toplayback captured waveformsNoneCost EffectiveHigher cost, and may be difficult to maintainfuture production due to some components beingdiscontinued and unavailable. Figure 1 (2 of 2) M-4272 Feature Comparison to M-0272/M-0236B   –4–M-5072 Retrofit Kit The following is a list of the additional features that have been incorporated in the digital equipment that canenhance the security and performance of your facility: Bi-Directional Operation : The legacy equipment does not support automatic transfer from thestandby source to the main source. The M-4272 supports automatic transfer in either direction byproviding independent bus under voltage elements and transfer initiation inputs for each direction.ã Hot parallel Transfer : The legacy equipment does not support Hot Parallel Transfer. For routinetransfers, the breakers must be operated manually. The safety of this method depends on the plantoperator verifying the voltages are satisfactory prior to paralleling the sources. In addition, thistransfer method is very slow which results in the sources being paralleled for long periods of timeand provides no breaker failure protection. The M-4272 provides programmable, fully supervisedclosed transitions in either direction. This provides additional safety by ensuring the sources arecompatible prior to paralleling, minimizing the time that the two sources are paralleled, andproviding breaker failure protection for the entire operation.ã Self Diagnostics : The legacy equipment provides limited self diagnostics. Like our relay products,the M-4272 incorporates extensive self diagnostics that will automatically remove the equipmentfrom service and notify operators in the event of input power failure or internal equipment fault.ãProgrammable LogicãDigital OscillographyãTransfer Event LogãSequence of Events LogsãBreaker performance monitoringãProgrammable load sheddingãExtensive metering and statusãCommunications capability M-5072 Retrofit Kit Features The M-4272 Digital Motor Bus Transfer System and a M-5072 retrofit kit provide the direct replacement of theM-0272/M-0236B Analog Transfer Logic Controller. The physical change is very simple and cost effective.The M-5072 retrofit kit consists of a bracket and wiring harness (Figure 2) that replicates the existing M-0272terminal block locations. The M-5072 terminal blocks are located in the same positions (Figure 3) as theM-0272 and it is attached to the M-4272. The wire harness connects the appropriate terminals between theM-4272 and the M-0272. This will allow a very simple replacement of the existing M-0272 equipment.Since the existing analog M-0272/M-0236B takes 7u height while the M-4272 takes only 4u height. One rackmount black blank panel with 1u height and one rack mount black blank panel with 2u height are provided tofill up the empty spaces after the replacement. Refer to Figure 4, M-0272 versus M-4272 front panel layoutdrawing for details.An Optional M-3919 Graphic Display Unit (GDU) and Touch Screen Human Machine Interface (HMI) forcommunicating with one or two M-4272 units. M-4272/M-5072 Installation The existing M-0272 wiring would be labeled and then disconnected. The M-0272 equipment would bedisconnected and removed. The M-0236B would also be disconnected and removed. Then the M-4272 withthe supplied bracket/harness already mounted would be installed in the same location as the M-0272. Thelabeled wires would be reconnected to the new bracket. Refer to Figure 3, M-5072 Terminal Blockassignments and Figure 5, M-4272 Versus M-0272 External Connections for details. All wiring connectionsshould be connected directly to M-4272’s terminals.
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