Relay testing procedure pdf

This seminar will introduce the theory and practice of endtoend relay testing from the relay testers perspective. Rating type tests are completed to make sure that components are used within their. Their main duty is to isolate a faulty section within few cycles but by ensuring minimum interruption to healthy sections. How to test a relay with a multimeter step by step guide. Page 3 of 15 standard work practice sp0518 ver 2 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 return the relay scheme to service in an acceptable standard. The simplest way of finding this is to use a multimeter with an ohmmeter setting and then measuring the resistance values by checking its terminals. To check the coils resistance with a multimeter, take a multimeter and put it on the ohmmeter setting then connect the multimeter probes on any two terminals of relay s coil.

A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Relay setting x multiples of set current test current. Pdf easy method for testing transformer differential relays. Thus, procedures and records should be designed with preventive maintenance as the guide. Protection relay testing and commissioning cedengineering. 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. In addition to the standard test procedure, a manual with instructions is also to be made.

The tests themselves will reveal catastrophic failures which would have prevented the relay from performing when called upon to operate, while properly maintained records will reveal. Nov 01, 2014 here is a video on how you can test a relay with or without a diagram. A technicians approach to cable testing directional. This can be used as an alarm or trip signal to minimize the potential. Many relay test plans start by reconfiguring a digital relay to make it operate like an electromechanical relay, and then apply electromechanical relay test procedures to record a pickup and timing results. The goal of testing relays is to maximize the availability of the protection and to minimize the risk of a misoperation. This is achieved by applying suitable inputs from a test set to the inputs of the relays and checking if the appropriate alarmtrip signals occur at the relay control room. Field test procedure for protective relays, november 1991.

Sel recommendations on periodic maintenance testing of. How to test a relay with a multimeter step by step guide 2020. 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. Patented mechanical device for detection of sudden pressure events based on the rate of pressure rise and safe limits established by transformer manufacturers. Universal testing method for power transformer differential. Breaker trip coils and other devices operated by the relay should be checked to see that proper operation is ob tained at voltages considerably below normal. Switch on the test current and check trip time of the relay.

Pdf outofstep relays testing procedure researchgate. When a dangerous pressure rise has been detected, the qualitrol rapid pressure rise relay rprr will change state. This relay testing book is our core handbook and is used by large organizations across north america in their training programs. 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. Each of these packages contains different tests for different users needs. In this case there should not be continuity between 56 and 56a. Must also perform energizing procedures and in service load checks. Relay maintenance and testing preventive maintenance 1 gain system reliability and asset protection support todays challenges in relay maintenance and testing are many. Relays 5 to 12 test diagrams for systems with integral g. Endtoend testing provides a basic introduction to this important testing technique and a stepbystep procedure for performing a successful endtoend test. In other words, when the relay control coil is not energized, the relay. Routine factory production tests these tests are done to show that protection relays are free from defects during. With relay unplugged, check for continuity between 56 and 56b. Digital and numerical relays will have a selftest procedure that is detailed in the appropriate relay manual.

Commission testing methods for protection systems mipsycon. Operation, maintenance, and field test procedures for. Therefore an ideal relay is a unit which would act by. Connect the megohmmeter to one terminal of the h side of the pt and the negative to one side of the x side and to ground. Thus, it can be quite tricky to test a numerical transformer differential relay by secondary injection in order to verify that the relay is set properly to protect transformer in a particular application. Acceptance testing, commissioning, and startup will include control power tests, current transformer and potential transformer tests, and any other device testing associated with the protective relay. In this article, we will show you how to test a relay. In order to understand the presented testing methods some basic. Refer to il 41748 for support information and component level identification. Standard for acceptance testing specifications for.

Comparing protectiverelaying commissioning and test. The following sections of the ansineta standard for acceptance testing specifications for. Pdf mv switchgear protection relays inspection and test procedure find, read and cite all the research you need on. Relay acceptance testing owner preferences verify 100% of all included analog and digital io even if not all the io are used load relay settings digital relays setting files loaded into relays vendor specific software tools verify by comparing relay to setting file should be no differences. Testing potential transformers relay testing training. This course is intended for relay technicians or protection engineers and system consultants with an interest in relay testing. This volume also includes an overview of the most common communicationassisted protection schemes to help the reader understand how these schemes operate. Fist 38, operation, maintenance, and field test procedures for protective relays and associated circuits 5a. Automated processes and equipment are clearly needed. Currentbalance relay, directional type, 62 for line protection, 330 overcurrent type, 58 current biasing, for mho relay, 82 for offset impedance relay, 77 to avoid distance relay misoperation on arcs, 346 current compensation for ground distance relays, 360 current switching for distance relays, 368 current transformers, accuracy calcula, 1. Endtoend testing capability n iec 61850 testing capability smrt1 single phase relay test system n small, rugged, lightweight and powerful n operate with or without a computer n intuitive manual operation with smart touch view interface n high current, high power 75 amps400 va rms n network interface provides iec 61850 test. So it is crucial to test a relay if it stopped working before you replace it or throw it away. How to wire a relay 12v relays and how they work duration.

Pdf operation, maintenance, and field test procedures for. Protection systems play a key role for the safe and reliable operation of todays electricity power systems. Testing 3 test methods 3,4 test equipment 4 notes on testing 4 test diagrams for systems with g. The main reason for testing a relay is to find, whether it is a good or defective one. When testing the mbci differential relay, it is necessary to short the contact of the mcri relay. Dc relays, singlequantity, 22 directional, 24, 49 differential relays, 63 see also percentagedifferential relays directionalcomparison relaying, for bus protection, 277 principle of operation, 106 see also line protection with pilot relays directional control, of electromagnetic relays, 23 of singlequantity induction relays, 32,57,310,3. Performance testing ground fault protection systems contents description page general information 2 checklist for g. Protection relay testing for commissioning swp check this is the latest process zone version before use. When testing another automotive relay, check the diagram on the relay, or the wiring diagram in your car repair manual, because some relay power switches come normally closed and should open when energized usually, these terminals are marked 30 and 87a. Testing the 240 headlamp step relay test procedure 1.

Pdf the paper presents outofstep oos protection device testing methodology under closetoreal power system operation conditions. Section 7 of the ansineta standard for acceptance testing specifications for electrical power equipment and systems may be reproduced and used on a cut and paste basis for the particular type of equipment to be tested. Due to rapid advances in technology, its not unusual for one utility or plant to operate multiple generations of relays all in one integrated protection scheme. On these type of relays, your meter should read zero ohms or produce a beeping sound. The standard test procedure is meant to operate automatically for as long as possible with as few parameter changes as possible although the projects differ. Testing of a relay to ensure it meets ergon energy requirements. Increase the voltage slowly to the test voltage and let stand for one minute. Buchholz relay testing prc electrical 31 may 17 03. Transformer protection ret650 ansi commissioning manual. Operation, maintenance, and field test procedures for protective relays and associated. Jun 15, 2019 how to test a relay with a multimeter.

A relay usually gets damaged due to a number of reasons. These tests should be followed to determine if the relay. The relay is reconfigured during the test procedure for every element until all of the enabled elements are tested. Pw460 pw460 615a, 4300v is the 3 phase relay test equipment can test all types of protective relays. The westinghouse protective relay division was purchased by abb, and new relays carry the abb label. The method can be easily implemented in a protection relay test set 14, in order to facilitate the task for the test engineer. Properly working protection devices help to maintain the safety of the system and to safeguard assets from damage. The tests themselves will reveal catastrophic failures. Inspection, testing and commissioning of electrical. Sp0518 protection relay testing for commissioning swp pdf file. Protection relay testing procedure pdf get file protection relay testing procedure pdf cortana, text wife in bed and tell her cats been sick and needs clearing up. This test allows the engineer and relay technicians to validate all the cts and pts secondaries, transformer winding con. Authors paul price, nate myers, jim dehaan bureau of reclamation hydropower technical services group denver, colorado 5d. Automated testing programs are not suited for commission function testing inject current and voltage based on relay s settings not be able to detect setting errors typos bad system data do not test programmed logic or specific io functions.

To get the most out of the relay testing, it is essential to understand the benefits and limitations of each type of testing. It allows users to test our different relay tester. After the foundation is laid, you will find practical stepbystep procedures for testing the most common protection applications for. How to test a 3, 4 or 5 pin relay with or without a diagram. Disclaimer the data, examples and diagrams in this manual are included solely for the concept or product description and are not to be deemed as a statement of guaranteed properties. Periodic relay testing is, first and foremost, preventive maintenance. Basic, protection and advanced, which provides incomparable benefits for users. Secondary injection tests for checking the correct. Relay settings at all new protective relay installations, the re lays should be adjusted in accordance with the settings given in the relay data sheets furnished by the denver office, after which, tests should be made to determine if the actual operating characteristics check with the adjustments. Tst 101 provides a beginnerlevel introduction to testing sel relays.

This testing ranges from 100% parametric testing to life testing customized to the actual application. This relay test kit has inbuilt output monitoring and recording function and also supports testing kit iec 61850 ied. If continuity is present, then the latch is preset for low beams. These tests should be followed to determine if the relay is operating correctly. The operation of a normally closed relay is the same to that of a normally open relay, except backwards. Otherwise, relay will trip early and you will not get correct results. How to test a fuel pump relay and other automotive relays.

Understanding microprocessor based relay logic part 4 relay settings and test procedures duration. Quality assurance procedures have been developed for the mass production of high reliability monolithic integrated circuits at reasonable cost. Which of the procedures described below are added to your test plan will depend on the specific project or industry specifications, to be. Rts provides testing for all types of electromechanical relays. Scribd is the worlds largest social reading and publishing site. Caution after each test, cool the relay for minimum 10 minutes. A comprehensive testing program should simulate fault and normal operating conditions of the relay. Relays are frequently found device in high voltage or medium voltage power system.

Secondary injection tests for checking the correct operation. Klf scope this test procedure covers the testing and maintenance of the abb klf loss of excitation relay. The procedure of checking the coils resistance of a relay with a multimeter. The manual provides procedures for checking of external circuitry and energizing the ied, parameter setting and configuration as well as verifying settings by secondary injection. In order to ensure reliable operation, protective relays as well as recloser controls must be tested throughout their. Digital and numerical relays will have a self test procedure that is detailed in the appropriate relay manual. Run manual, automated and iec 61850 compliant tests for protection scheme verification. The purpose of secondary injection testing is to check that the protection scheme from the relay input terminals onwards is functioning correctly with the settings specified. Since type testing of a digital or numerical protection relay includes software and hardware testing, the type testing procedure is very complex and more challenging than a static or electromechanical relay. This may be done across terminals 2 and 4 at the rear of the mcri overcurrent relay. The paper philosophies for testing protective relays describes an approach to testing digital relays and the factors that affect a maintenance interval 2. High beam circuit activated by negative switched latching. An important factor in analyzing test intervals is monitoring. The manual describes the process of testing an ied in a substation which is not in service.

Periodic or reliability centred testing of relays to. Thus, a new standardized testing methodology for transformer differential protection relay. Relay testing includes meter test, inputoutput contact tests, element tests, and dynamic tests. The relay testing handbook is an indispensable resource that every relay tester should keep at their fingertips. This book was written for relay testers, rather than design engineers, so you no longer have to decipher engineering textbooks when performing relay tests. Power test is the software that includes all our relay testers. Instructions ground protection systems ge industrial. Protective relay testing may be divided into three categories. Ge power management periodic relay testing 11 get3473b 1 periodic relay testing 1 get3473b 1 periodic relay testing 1. Protection relay testing procedures doble protection suite.