Motor Protection With ATEX Certification User S Guide

REF 542plusMotor Protection with ATEX CertificationUser s guide

1MRS755862Issued: 06.12.2002Version: C/04.12.2009Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guideContentsCopyrights . 71. Introduction.91.1.1.2.1.3.1.4.1.5.This manual. 9Use of symbols . 9Intended audience . 10Product documentation . 10Document revisions.112. Safety information. 133. Motor protection functions. 153.1. Supervision of a blocking rotor .3.1.1. Setting parameters.3.1.2. Functional check.3.2. Motor start protection.3.2.1. Setting parameters.3.2.2. Tripping characteristic.3.2.3. Functional check.3.3. Number of starts protection .3.3.1. Setting parameters.3.3.2. Functional check.3.4. Thermal overload protection .3.4.1. Setting parameters.3.4.1.1. Setting the time constant .3.4.1.2. Setting the temperature .3.4.1.3.Behavior during powering on andoff .3.4.1.4. Setting the temperature after reset .3.4.2. Tripping characteristic.3.4.3. Functional check.3.5. Unbalanced load protection .3.5.1. Setting parameters.3.5.1.1. Setting the current starting value.3.5.1.2. Setting the tripping time.3.5.2. Tripping characteristic.3.5.3. Functional 35374. Setting example . 394.1.4.2.4.3.4.4.4.5.4.6.Rotor block protection.Motor start protection.Thermal overload protection .Number of starts protection .Tripping characteristic.Behavior after recovering of the auxiliary voltage .4040404243443

REF 542plusMultifunction Protection and Switchgear ControlUnitMotor Protection with ATEX Certification1MRS755862User s guide5. Operation of the REF 542plus . 475.1. Operator's responsibilities.5.2. Guarantee Provisions .5.3. Safety Regulations .5.3.1. General safety notes .5.3.2. Specific safety information.5.3.3. Risk analysis and safety measures .4747484849506. Mounting and Installation . 516.1. Unpacking .6.2. Mounting .6.2.1. Set-up Area and Required EnvironmentalConditions .6.2.2. Installation in LV panels .6.2.3. Wiring REF 542plus .6.2.3.1. Checking the current transformercircuits.6.2.3.2. Checking the voltage transformercircuits.6.2.3.3. Checking the auxiliary voltage .6.2.3.4. Checking the tripping and signalingcontacts .6.2.3.5. Checking the binary inputs.6.2.4. Grounding of REF 542plus .6.2.5. Typical examples of analog and binaryconnections .6.2.6. Connection example of the REF 542plusanalog inputs .515154555657575858585859607. Commissioning. 637.1.7.2.7.3.7.4.7.5.Safety Information.Switching on the feeder .Test equipment.Testing the interlock conditions.Determining the transformer direction .7.5.1. Current transformer .7.5.2. Voltage transformer .7.5.3. Current sensor .7.5.4. Voltage sensor .7.6. Testing the measured value recording .7.7. Testing the protective functions .63636363636465656666678. Technical data . 698.1. Analog inputs . 694

1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guide8.1.1. Measurements .8.1.2. Protection .8.2. Binary inputs and outputs.8.2.1. BIO module with mechanical output relays(version 3) .8.3. Binary inputs and outputs.8.3.1. BIO module with mechanical output relays(version3) .8.3.2. BIO module with static outputs.8.4. Interfaces .8.5. Power supply .8.6. Environmental conditions .8.7. Protection degree .69697070707172727474749. Abbreviations . 75Appendix A: Thermal overload protection . 775

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1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guideCopyrightsThe information in this document is subject to change without notice and should notbe construed as a commitment by ABB Oy. ABB Oy assumes no responsibility forany errors that may appear in this document.In no event shall ABB Oy be liable for direct, indirect, special, incidental orconsequential damages of any nature or kind arising from the use of this document,nor shall ABB Oy be liable for incidental or consequential damages arising fromthe use of any software or hardware described in this document.This document and parts thereof must not be reproduced or copied without writtenpermission from ABB Oy, and the contents thereof must not be imparted to a thirdparty nor used for any unauthorized purpose.The software or hardware described in this document is furnished under a licenseand may be used, copied or disclosed only in accordance with the terms of suchlicense. Copyright 2009 ABB OyAll rights reserved.TrademarksABB is a registered trademark of ABB Group. All other brand or product namesmentioned in this document may be trademarks or registered trademarks of theirrespective holders.GuaranteePlease inquire about the terms of guarantee from your nearest ABB representative.7

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1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guide1.Introduction1.1.This manualThis part of the manual for the multifunctional protection and switchbay control unitREF 542plus primarily focuses on the integrated motor protection functions. Sectionand its subsections contain information on:***The basic principle of functioningSetting of the parametersRepresentation of the tripping characteristicCE Conformity DeclarationMultifunctional Protection and Bay Control Unit REF 542plus is designed andmanufactured complying to the corresponding international standards of the seriesEN 50081, EN 50082 for EMC-Guidelines and EN 60255-6 for Low VoltageDirective of the European Parliament and Council.1.2.Use of symbolsThis publication includes the following icons that point out safety-related conditionsor other important information:The electrical warning icon indicates the presence of a hazard whichcould result in electrical shock.The warning icon indicates the presence of a hazard which could resultin personal injury.The caution icon indicates important information or warning related tothe concept discussed in the text. It might indicate the presence of ahazard which could result in corruption of software or damage toequipment or property.The information icon alerts the reader to relevant facts and conditions.Although warning hazards are related to personal injury, it should be understoodthat operation of damaged equipment could, under certain operational conditions,result in degraded process performance leading to personal injury or death.Therefore, comply fully with all warning and caution notices.9

REF 542plusMultifunction Protection and Switchgear ControlUnitMotor Protection with ATEX Certification1MRS755862User s guide1.3.Intended audienceThis manual is intended for engineers to support configuration and engineering ofsystems and/or applications.1.4.Product documentationName of the ManualDocument IDReal-time clock synchronization, IRIG-B input time master 1MRS755870CAN Manual1VTA100189-Rev 1, enConfiguration Manual1MRS755871iButton Programmer User Manual1MRS755863Manual Part 3, Installation and Commission1VTA100004Manual Part 4, Communication1VTA100005Motor Protection with ATEX Certification, Manual1MRS755862Operator’s Manual1MRS755869Protection Manual1MRS755860REF542plus: Risikoanalyse und sicherheitsgerichtetesVerhalten1VTA300137Technical Reference Manual1MRS755859Technical Reference Modbus RTU1MRS755868Web Manual, Installation1MRS755865Web Manual, Operation1MRS755864Other related documents10[IEC01]IEC 60255-8: Thermal electrical relays, 2nd edition, 1990-09.[IEC02]IEC 60079-7: Explosive atmospheres – Part 7: Equipment protection byincreased safety "e," 2006-07.[IEC03]IEC60085: Electrical insulation – Thermal classification, 2004-06.[AT 01]Directive 94/9/EC: Directive to be applied to equipment and protectivesystems intended for use in potentially explosive atmospheres, 23 March1994.[AT 02]Guidelines on the application of council directive 94/9/ec of 23 March1994 on the approximation of the laws of the member states concerningequipment and protective systems intended for use in potentiallyexplosive atmospheres, May 2000.[AT 03]Production Quality Assessment Notification, PTB 03 ATEX Q07,Equipment or protective systems or components intended for use inpotentially explosive atmospheres – Directive 94/9/EC, Motor ProtectionDevice, November 2003.

1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guide1.5.Document revisionsVersionIED Revision Datenumber1VTA100114-Rev02 en1VTA100114-Rev05 en2.0AHistory06.12.2002Document created01.07.2005Updated to version V4D02x28.02.2006Document updated* language* layoutB2.030.09.2006Equations updatedC2.5 SP34.12.2009Updated to version V4E04cApplicabilityThis manual is applicable to the REF 542plus release 2.5 SP3, software versionV4E04c.11

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1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guide2.Safety informationDangerous voltages can occur on the connectors, even though theauxiliary voltage has been disconnected.Non-observance can result in death, personal injury or substantialproperty damage.Only a competent electrician is allowed to carry out the electricalinstallation.National and local electrical safety regulations must always befollowed.The frame of the device has to be carefully earthed.The device contains components which are sensitive to electrostaticdischarge. Unnecessary touching of electronic components musttherefore be avoided.13

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1MRS755862Multifunction Protection and Switchgear ControlUnitREF 542plusMotor Protection with ATEX CertificationUser s guide3.Motor protection functionsOverloading conditions cause impermissible temperature rises in motors and mayresult in premature fatigue and aging. If this type of condition persists, thermaldestruction of the components cannot be excluded.With regard to the protection functions, a distinction has to be made betweenoverloads caused by starting processes and overloads occurring during operation.During startup, both in the winding of the rotor and in the winding of the stator,currents may be present that are well above regular on-load currents. A fast trippingmust be generated in case a disturbance does occur during startup, for instance, inthe event of a rotor block or motor start under heavy load condition. To preventoverloading conditions, also the number of starts needs to be limited.While the motor is running, overloads may occur as a result of the working loads.For monitoring such operating conditions, the temperature is calculated on the basisof a thermal model.For motor protection purposes, the REF 542plus field control and protection deviceincludes the following functions:During the starting process***Blocking rotor protectionMotor start protectionNumber of starts protectionDuring operation**Thermal overload protectionUnbalanced load protection or optionally a simple positive sequence monitoringIn all cases, the momentary motor temperature is crucial for the motor protectionfunctions. The REF 542plus uses a common thermal replica of the first order fordetermining the motor temperature. Consequently, decisions can be taken by allapplied protection functions, depending on the momentary value of the calculatedmotor temperature.The thermal replica referred to above is started immediately, as soon as the currentflows through the motor windings. Thus, the motor protection in the REF 542plus isdesigned as an thermal overload protection with a total memory function inaccordance with standard IEC 60255 8 [DIN1], since a previous loading conditionis always taken into consideration and is being tracked by the thermal replica.Unbalanced load protection is provided as a phase failure protection caused by anopen-circuit condition (broken phase connection). This type of protection enablesmonitoring of the negative-sequence component which causes a temperature rise inthe laminated core of the rotor. Optionally, in case of small motors a simple positivesequence monitoring function can be applied instead.15