CM-MPS三相多功能监视继电器ABB

2C D C 255 057 F 0008Three-phase monitoring relays CM rangeT h r e e -p ha s e m o n i t o r ingN E W G EN E R A T I O N 2008.10.012The new generation of three-phase mainsT oday, three-phase mains are g enerally usedApprovals / Marks(depending on devices)A UL 508, CAN/CSA C22.2 No.14; C Germanischer Lloyd;D GOST; K CB scheme;E CCC; L RMRS /a; b C-Tickb ecause they allow the most economic t ransportof high currents as well as simply d esigned,r obust and effi ciently working electric motors.For the monitoring of three-phase mains, ABB’sthree-phase monitoring relays of the CM r angec omprise a comprehensive program of c apableand e conomic devices. All devices f eature awidth of 22.5 or 45 mm. The r ange i ncludesm ultifunctional three-phase monitoring relays aswell as s ingle-function devices for the m onitoringof individual parameters.Multifunctional and single-functional devicesWide range operating voltage enables world-wide operationMonitoring functions 1):Phase failurePhase sequenceAutomatic phase sequence correctionOvervoltageUndervoltagePhase unbalanceNeutralFixed or adjustable thresholds for over- and undervoltageAdjustable threshold for phase unbalancePowered by the measuring circuitMonitoring of mains with and without neutral conductorDevices with 1 n/o contact, 1 or 2 c/o (SPDT) contactsLED(s) for status indicationEnergy saving of more than 80 % through innovative switch modepower supply technology1) dependig on device࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯Features of three-phase monitoring relays1)32C D C 255 058 F 00082C D C 255 059 F 00082C D C 251 042 F 00082C D C 253 010 F 00032C D C253 065 F 0006...Three-phase monitoring relays CM rangeT h r e e -p ha s e m o n i t o r ingN E W GE N ER A T I O N 2008.10.01All new devices are working with a modern TRMS- m easuringprinciple (True root means square)Interpretation of any wave formsDevices for mains voltages of up to 690 VSignals can be measured within a frequency range of 45-65 Hzas well as within a range of 45-440 Hz 1)Interrupted neutral monitoring 1)Monitoring of single- and three-phase mains with the samed evice 1)Applicable in grounded and ungrounded mains Operating principle of the output contacts confi gurable as 2x1 or1x2 c/o (SPDT) contacts1)Configurable phase sequence monitoring Confi gurable automatic phase sequence correction 1)Adjustable ON- or OFF-delayed tripping delayTime delay can be adjusted via a logarithmic scale 1)Front-face rotary or DIP switch for function selection1)depending on device࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯࡯Highlights of the new generation 1)Front-face adjustmentAll setting and operating elements are on the front. This enables quick and easya djustment Direct reading scalesDirect setting of the threshold values and time delay without any additionalc alculation provides accurate time delay adjustment.Logarithmic time scaleThe new potentiometer allows a very exact time adjustment in the lower time range.By turning to the left stop the time delay can be switched offDouble-chamber cage connectingt erminals Double-chamber cage connectingt erminals provide connection of wires up to 2 x 2.5 mm 2 (2 x 14 AWG), rigid or fi ne-strand, with or without wire end ferrules. P otential distribution does not require a dditionalt erminals.Sealable transparent c overThe products can be protected against unauthorized change of time and threshold values (available as an accessory).4Monitoring the parameters of a three-phase networkO nly reliable and continuous monitoring of a three-phasenetwork guarantees the trouble-free and economic operation ofm achines and installations. Thus, the three-phase monitoringrelays of the CM range, according to the individual requirements,m onitor the phase voltages, phase sequence, phase unbalance,phase failure and the neutral:Monitoring for over- and undervoltageAll electric devices can be damaged when operated conti-nuously at voltages over or under their rated values.An overvoltage could potentially cause heating within thedevice. If the temperature is unduly high, component partsand thus whole devices or installations may fail or may bedestroyed. Undervoltages involve the risk that the switchingelements reach an undefi ned region. In this case, parts of theinstallation still function, but not others. This misoperation canresult in damage of the product or installation. In the worstcase, wrong voltages may even cause harm to the operatingpersonnel.Phase unbalance monitoringIf the supply by the three-phase system is unbalanced dueto uneven distribution of the load, the motor will c onverta part of the energy into reactive power. This energy getslost u nexploited; also the motor is exposed to h ighert hermal strain. Other thermal protection devices fail to de-tect c ontinuing unbalances which can lead to damageor d estruction of the motor. The CM range three-phasem onitoring relays with phase unbalance monitoring canr eliably detect this critical situation.Phase failure detectionIn case of a phase loss, undefi ned states of the i nstallationare likely to occur. E.g. the startup process of motors isd isturbed. All three-phase monitoring relays of the ABB CMrange detect a phase loss as soon as the voltage of onep hase drops below 60 % of its nominal value.Phase sequence monitoringAn incorrect phase sequence applied at start-up or a changeof the phase sequence during operation will cause a 3-pha-se motor to run with reverse rotation. Certain motors when࡯࡯࡯࡯operated in the reverse direction will cause severe damage toconnected loads such as pumps, screw compressors and fans.Especially for non-fi xed or portable equipment, such as construc-tion machinery, phase sequence detection prior to the start-upprocess is highly recommended. ABB offers three-phase monitorswith selectable phase sequence monitoring. This provides thecapability of ignoring phase sequence conditions for applications,such as motors with forward and reverse rotation, where the pha-se sequence is unimportant.Interrupted neutralUnder normal conditions, individual phase voltages are equal andthe load causes the individual phase currents to vary. Systemsthat have neutral conductors accommodate this variation by acompensating current fl ow through the neutral conductor. If theneutral conductor breaks, the compensating current can no lon-ger fl ow. As a result, the voltage is divided asymmetrically on theindividual phases. This means that over- and undervoltages areproduced in the individual phases and these can damage or evendestroy the connected consumers. ABB offers three-phase mo-nitoring relays that monitor the neutral conductor for interruptedneutral. The interruption of the neutral is detected by means ofphase unbalance monitoring.࡯Three-ph a se m o n i t o ri ngN E WG E N ER A T I ON2008.10.0152C D C 252 086 F 0b 072C D C 252 087 F 0b 07Three-phase monitors CM rangeAutomatic phase sequence correction The new generation of ABB three-phase monitoring relays offers devices with automatic phase sequence correction. If phase sequence monitoring and phase sequence correction are activa-ted, and in conjunction with a reversing contactor combination, it is ensured that for any non-fi xed or portable equipment, e.g. construction machinery, the correct phase sequence is applied to the input terminals of the load.࡯Control circuit diagram(K1 = CM-MPS.x3 or CM-MPN.x2)Power circuit diagramAdjustment possibilities on the front of the unit in the example of CM-MPS.43Adjustment of the threshold for overvoltage Adjustment of the threshold for undervoltage Adjustment of the threshold for phase unbalance1)Adjustment of the tripping delay t VDIP switches for function selection: (1) Timing function ON = A ON-delay OFF = B OFF-delay(2) Phase sequence monitoring ON = deactivatedOFF = activated(3) Operating principle of the output contacts ON = i 2x1 c/o (SPDT) contact 1)OFF = j 1x2 c/o (SPDT) contacts (4) Automatic phase sequence correction ON = activatedOFF = deactivated1)for separate signalling of over- and undervoltageN E WN E WN E WN E W62C D C 253 100 F 00042C D C 253 090 F 0004Selection guide and order referencesCM-E - Economy1SVR 550 881 R94001SVR 550 882 R95001SVR 550 870 R94001SVR 550 871 R95001SVR 550 824 R91001SVR 430 824 R9300A ON-delay,B OFF-delayCM-S2C D C 253 089 F 00042C D C 253 260 F 0005T h r e e -p ha s e m o n i t o r ingN E W GE N E R A T I O N2008.10.011SVR 630 784 R33001SVR 630 794 R13001SVR 630 794 R33001SVR 630 774 R13001SVR 630 774 R33001SVR 630 885 R13001SVR 630 885 R33001SVR 630 884 R13001SVR 630 884 R330- Single-functionalCM-S - Multifunctional7/8CM-N - MultifunctionalAccessories for CM-S devices1SVR 630 885 R43001SVR 630 884 R43001SVR 650 487 R83001SVR 650 488 R83001SVR 650 489 R83001)Operating mode 1x2 or 2x1 c/o (SPDT) contact can be selected. 2x1 c/o (SPDT) contact for separate signalling of over- and undervoltage.Selection guide and order references92CDC6639F4Kr-SaegeNominal condition: Three-phase motor with monitoring relay CM-MPS.xx in fulloperationFault: Three-phase motor with line regeneration and a monitoring relayCM-MPS.xx prior to tripping due to a phase failureSwitch-off in case of failure: Three-phase motor with phase loss in L2 afterm onitoring relay CM-MPS.xx has trippedIndication of a phase loss on a running three-phasemotor (with reverse feeding) by the phase unbalancemonitoring of the three-phase monitor CM-MPS.xx:Nominal conditionThe motor is only turned-on, when the CM-MPS.xxdetects the correct phase sequence L1-L2-L3 andwhen all voltages are within the preset voltage rangeUmin/Umax: I.e. no over-/undervoltage, no phase failure,and no phase unbalance is indicated.FaultPhase loss (in this example phase L2) caused by ablown fuse and voltage loss caused by generatore ffect of the motor.Voltage at the point can reach up to 95% ofthe original voltage, depending on the motor typeused, the motor load and other parameters.The phase loss on a running motor can only bereliably detected by phase unbalance monitoring(e.g. with the CM-MPS.xx).In operation, the CM-MPS.xx switches off the runningmotor, when the difference between one phase andthe nominal voltage exceeds the preselected valueͬU. Thus, any damage of the motor and the installati-on will be safely avoided.࡯࡯motor equivalentcircuit diagram2CDC25269F28* plus reverse fed voltagecaused by the generatoreffect of the magnetic rotor2CDC2527F28motor equivalentcircuit diagram* plus reverse fed voltagecaused by the generator2CDC25271F28motor equivalentcircuit diagramPhase failure detectionAs part of the on-going product improvement, ABB reserves the right tomodify the characteristics or the products described in this document.The information given is not-contractual. For further details pleasec ontact the ABB company marketing these products in your country.ABB STOTZ-KONTAKT GmbH/lowvoltageǞ Control Products Ǟ Electronic Relays and ControlsContact: /contacts Documentnumber2CDC112136B21(1/9)PrintedintheFederalRepublicofGermany。