Use the relay testing books, apply them to your current relay testing work, and if at any point you arent satisfied, send them back and well issue you a complete refund. Assuming the relay which is responsible is known further information is needed to be evaluated 1. Testing automotive relays before replacing them is a good idea and its not to difficult. Numerical distance protection relay commissioning and testing.
Scope this directive is intended to cover all protective relays, relay communication equipment, and. For communication of siprotec through digsi do the. Frlan2 1faculty of electrical engineering and computing, university in zagreb, unska 3, 0 zagreb, croatia. Rts can provide an array of testing for electromechanical relays. The power system stability modelling software is used as source of. High standards of safety are observed when working in live substations. I have been in electrical testing for the past 15 years and have worked for neta shops and utilities. A comparison of line relay system testing methods chris araujo, national grid co. Which of the procedures described below are added to your test plan will depend on the specific project or industry specifications, to be determined by the equipment owner or system engineer. Gemini can provide an array of testing for electromechanical relays.
The paper first analyzes the functionality of modern stateoftheart distance protection relays. Therefore, the cpc 100 is the ideal test set for substation asset commissioning and maintenance. Testing and cleaning of relays are covered in each of the manufacturers instruction manuals. Siprotec siemens distance relay testing procedure with 7sa 1.
If so the trigger circuit of the relay electrical system is working, if not continue to next step. Relay testing servicesem relays, cable assemblies, hard. Authors paul price, nate myers, jim dehaan bureau of reclamation hydropower technical services group denver, colorado 5d. Federal energy regulatory commission ferc issued order.
This document provides guidance to policy makers and laboratories on testing strategies for each of these four scenarios, including the scenario. Numerical distance protection relay commissioning and testing hung manh tran henry akyea thesis for the degree of master of science, october 2005 department of energy and environment division of electric power engineering chalmers university of technology goteborg, sweden. Modern relays have very different characteristics which require a different testing philosophy to ensure they will operate correctly when required. These resistors are either dry type with air insulation or wet type, usually oil immersed. Protection relay testing our qualified and experienced technicians carryout maintenance testing of protection relays on generation, distribution and transmission power systems for utilities, mines and industries. Selecting assessment procedures for the validation effort. Field test procedure for protective relays csanyigroup. Each relay needs to be tested to verify it is changing states and each set of contacts needs to be verified that they open and close as voltage is applied to the relay coil with the resulting.
Operation, maintenance, and field test procedures for protective relays and associated circuits iii acronyms and abbreviations a ampere ac alternating current amp ampere ansi american national standards institute bes bulk electric system carma capital asset and resource management application ccvt coupling capacitor voltage transformers co 2. Diagnosingsolving relay problems learn about the successful application of a starting relay, including proper installation, wiring, troubleshooting and replacement of the relay. Simplified motor relay testing can be ordered as an adobe acrobat pdf digital download, or as a hardcover book that also includes the adobe acrobat pdf digital download for free. To test a relay to see whether it is good or defective, the simplest way to do would be to use a multimeter set to the ohmmeter setting and measure various resistance values of the relay. For this particular methodology, a new testing tool called batch generator has been developed for the purpose of automating not only the process of testing, but the process of creating test cases as well. A relay works in a similar way, but instead of you reaching into the relay to flip on the internal switch directly, you energize a control circuit that connects to a coil inside the relay this happens to the fuel pump relay when you turn the ignition switch to fire up the. In this article, we will show what resistance readings you should get when you measure various points of a relay. Testing of distance protection relays and ieds is one of the key requirements to ensure their. The relay testing handbook pdf digital version is now. The introduction of earthfault current limiting resistors has become standard practice for medium and low voltage electrical systems. Rts has over 30 years experience in testing em relays, and is recognized as a leader with a proven track record for solving your relay reliability problems. Included are test plans, connections, procedures and testing philosophies. Mritm inspection test and maintenance relays space age.
Testing automotive relays explained defective relay. Numerical distance protection relay commissioning and. Repairs and replacements spare parts or complete replacements should be stocked or available, as appropriate. Commission and testing with the aims to calculate appropriate settings for the protection relay, configure the relay, install, commission and testing the entire protection. Megger the complete guide to electrical insulation testing. Avts advanced visual test software avts advanced visual test. As the second of the relay testing handbook series, relay testing fundamentals builds on the electrical theory principles introduced in the first package, electrical fundamentals for relay testing. It helps to think of a relay as a regular switch, like the one you use at home to turn on and off the lights in a room. The relay testing handbooks are a series of books that have been written from the relay testers perspective to concentrate on the principles and practical questions that every relay tester should be familiar with. Procedures for atmospheric testing in confined spaces osha. Scribd is the worlds largest social reading and publishing site. As modern protective relays become increasingly more powerful and complex, many relay testers continue to use test procedures and philosophies that are based on previous generations of relays and their limitations. The itm inspection test and maintenance mode series relay provides a convenient, affordable and reliable code compliant solution to successfully accomplish endtoend life safety system testing, as required by the national fire protection association.
General relay testing guidelines the ch2 with the optional energization module is the only tester cirris recommends for testing assemblies with relays. For communication of siprotec through digsi do the following. Test administration manual pdf provides stepbystep instructions for paperand. Methods for dealing with multiple testing frequently call for adjusting.
Facilities instructions, standards, and techniques volume 38 field test procedure for protective relays internet version of this manual created july 2000 facilities engineering branch denver office denver, colorado the appearance of the internet version of this manual may differ from the original, but the contents do not. I purchased this for a look at anothers perspective on endtoend relay testing. In right side part of the window click right button. This compilation includes all of the previously released packages from the relay testing handbook that discuss the generic principals of relay testing for modern digital relays. Create a timer circuit in an external box that will connect to each of the four relays in parallel and then open and close each of the relays one at. Several manufacturers now produce portable relay test sets that will provided excellent results. Avts advanced visual test software 3 transducer testing test editor dynamic control multistate playback endtoend tests vector control. Fred horvath, fpl seabrook station jim mack, schweitzer engineering laboratories, inc. We are so confident in the relay testing handbook, we offer a 100% moneyback guarantee, no questions asked.
Testing procedure it is recommended that only one relay be removed from a circuit at a time if the circuit is still energized. Testarelay manufacturers a limited range of specialised relays for unique applications. Transformer bushing cts should be tested using the current. To do so, weve setup a test race mode where the test race will only show up within the race monitor directory when the race is actively receiving data. Principles and practice, or it can be ordered by itself as a softcover book, adobe acrobat pdf digital download, or. You can now purchase the relay testing handbook pdf copies of any book in the relay testing handbook series at our online store. Methods for addressing multiple testing fwer and fdr. Many of the test sets also provide capability for dynamic phasor testing. General relay testing guidelines cirris systems corp. Laboratory testing for coronavirus disease 2019 world health. Testing numerical transformer differential relays commissioning. Testing of such devices requires the availability of a set of tools that will simplify the testing process, while at the same time will ensure the required high quality of that testing process. How to test a fuel pump relay and other automotive relays.
Step 4 once the relay has been identified, gently grasp or touch the relay in question, have a helper turn the ignition key to the on position, then crank the engine over, the relay should click in one of the ignition switch positions. Tips and tricks to overcome common obstacles 383 chapter 15. Pdf download links will be sent via email after the order has been processed, usually the same day. Responsibilities of the selection procedure developers, testing professionals, and. A relay will usually have a coil, pole terminal and a set of contacts. Fist 38, operation, maintenance, and field test procedures for protective relays and associated circuits 5a. Students will learn basic relay testing skills, acquire skills required to work with sel relays, such as using relay word bits and relay event reports, and practice acquired skills by working with a phase and ground distance sel311c relay during the training.
Gemin has over 25 years experience in testing em relays, and is recognized as a leader with a proven track record for solving your relay reliability problems. Your source for universal protective relay testing training. Nor mally, the lowest system voltage will be chosen, but this may not always be the case. The booklet is excellent for a beginner as well as a seasoned test technician. As a first step, a testing procedure for geodetic networks is discussed, using onesided f tests. A stagewise rejective multiple test procedure based on a modified.
Sel recommendations on periodic maintenance testing of. A 4 terminal relay is used so a low power circuit may engage a high power circuit without risk of damage to the low power. Rest assured that every facet of relay testing, no matter the complexity, can be handled simply with the comprehensive line of relay test equipment from megger. Define the multiple testing problem and related concepts. The numerical distance protection relay used is rel 5112. Rts provides testing for all types of electromechanical relays. Before a permit space that may have a haz ardous atmosphere can be entered, the atmosphere must be tested using the steps identified on. The fuel pump relay on the early cars is located on the fuse relay panel under the dash on the drivers side lhd. As we can see, the fault occurred on 80% of the line ab as seen by relay a.
Relay testing and its every facet can be easily handled with advanced relay test equipments. The final solution that will test all four relays has to have a simple connection procedure and. In that condition, carrying the relay testing equipments to the work site, seems to be the job of physically strong men. Students will learn basic relay testing skills, acquire skills required to work with sel relays, such as using relay word bits and relay event reports, and practice acquired skills by working with a. An improved bonferroni procedure for multiple tests of significance. If not available on the project, most of the equipment necessary can be borrowed from the denver office for making relay tests 5.
Testing the thyristors step by step before disconnecting the cables mark them. Laboratory testing strategy recommendations for covid19. Sel recommendations on periodic maintenance testing of protective relays karl zimmerman introduction there continues to be high interest in testin g practices for protective relaying systems. Gps synchronized 5 endtoend testing in order to analyze the relay settings and telecommunication system 3. Relay pick up at rated setting disc complete rotation at the above setting procedure. A state can be voltages, currents, phase angles, timers, start and stop the analog recorder, set boolean logic for the binary inputs, set binary outputs, or even use variables to set values. Testing the relay there are times where you may want to test the race monitor relaying. Mar 24, 2014 sel recommendations on periodic maintenance testing of protective relays karl zimmerman introduction there continues to be high interest in testin g practices for protective relaying systems. Modern relays have very different characteristics that require a different testing philosophy to ensure that they will operate when required. In most cases if you miss diagnose the electrical problem and buy a new relay and it doesnt fix the car, youre stuck with the part you didnt need. R efrigeration and airconditioning technicians know that the hermetic compressor is the heart of the cooling system. Sep 20, 2016 siprotec siemens distance relay testing procedure with 7sa 1. The final solution that will test all four relays has to have a simple connection procedure and simple result so that anyone will be able to test the relays on the board.
We use parametric and life testing for em relays to find a relationship between quality and reliability for a specific user application. A relay works in a similar way, but instead of you. Sat educator guide to policies and procedures the sat suite of. Principles for the validation and use of personnel selection. When i turn the key there is a loud click but the starter does not turn. It is further necessary that these expanding testing capabilities be met with a similar improvement in the simplification of a test instruments user interface and software control. This testing ranges from 100% parametric testing to life testing customized to the actual application. Most vendors of the relay test equipment offer computerbased test sets capable of performing steadystate phasorbased tests. Disconnect the power cables from the main terminals 1l1, 3l2, and 5l3 and the motor cables from terminals 2t1, 4t2 and 6t3 disconnect all cables from the terminals 1 to 20, the external keypad, and the ptc sensor and if used, the field bus plug. This type of testing is called application or transient testing 3. Understanding and testing the abb red670 distanceline. Outofstep relays testing procedure antans sauhats1, andrejs utans2, gregory pashnin3, dmitrijs antonovs4, 14riga technical university abstract the paper presents outofstep oos protection device testing methodology under closetoreal power system operation conditions. Abstracttesting is the last line of defense for relay system performance before the switch is thrown.
For example, a low power circuit in a car that commands the high. Operation, maintenance, and field test procedures for. We have taken the best of each of these manuals, plus data from two testing publications and formed the following procedure to. Siprotec siemens distance relay testing procedure with 7sa. Simes 1986 has proposed a modified bonferroni procedure for the test of an overall hypothesis which is the combination of n individual. Understanding and testing the abb red670 distanceline differential relay figure. The patented cpc 100 primary injection test system replaces several individual testing devices. Stagedfault testing of distance protection relay settings. Concise test reports are issued for all the relays that we test and all our relay test equipment.
Principles and practice, or it can be ordered by itself as a softcover book, adobe acrobat pdf digital download, or both. This compilation includes all of the previously released packages from the relay testing handbook that discuss the generic principals of relay testing for modern. In practice, as you will see in the test methods described below, you read a value that is the apparent resistance a useful value to diagnose troubles, which is. Avts advanced visual test software avts advanced visual test software description avts is a microsoft windows xpvista7 software program designed to manage all aspects of protective relay testing using the new megger smrt or mprt relay test sets. This book is included in the hardcover book the relay testing handbook. This course is intended for relay technicians or protection engineers and system consultants with an interest in relay testing. Previously, relay testing equipments were associated with large size and heavy weight. Protective relay testing may be divided into three categories. Tst 101 provides a beginnerlevel introduction to testing sel relays. Some tests and procedures may be performed by specialists during the. A good set of testing equipment and relay tools are important. Manufacturer recommended spare parts list along with company utilization experience should influence the spare parts inventory.
The following pro cedure should be followed when conducting a coordination study. This reduces the costs for training and transport, and cuts down testing time. More flexibility has been added as well as some new and powerful features. The need for selecting suitable commercial testing tools and. A 4 terminal relay is used so a low power circuit may engage a high power circuit without risk of damage to the low power control circuit.
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