Based on iec and ieee standards for highvoltage switchgear and. Switchgear and switchboard inspection and testing guide testguy. Electrical equipment site acceptance testing eaton. The tool invites you to complete four types of design input data forms levels of information, i. Sf6 equipment maintenance, repair, and replacement and. This document is not part of a manual but it is published to the energy networks internet site. Switchgear and protective devices 2015 1 p a g e lecture notes on. A perfect condition of the insulation is essential. Included herein are preferred ratings, required design test procedures, and acceptance criteria. Electrical switchgear safety a guide for owners and users this is a webfriendly version of leaflet indg372rev1, published 04 introduction this guidance is for owners and operators of electrical switchgear in industrial and commercial organisations with little electrical knowledge or expertise available inhouse. The switchgear specification manager will be subject to new releases andor revisions accordingly. I f the test hav e been done at factory at 38 kv i t wi ll be done at s ite at 80% of the last tim e. Gasinsulated switchgear gis is very compact and therefore represents a spacesaving alternative to classic airinsulated installations.
Manual and automatic measurements tripping times, primary current based on. For good insulation, the resistance usually reads in the megohm range. Go to testing areas customer views his product in its actual testing environment. Testing and maintenance of protective gear, protection against surgesurge absorber, surgediverter. S horted the cts secondary to ground and isolat ed from relays and m eters. Perform a trip and close test with the control and a trip test with the relays. Switchgear shall conform to the arrangements and details of the drawings and space designed for installation. Medium voltage switchgear construction checklist page 3 of 6 version 0206 inspect for physical, electrical and mechanical condition of equipment and cabinet. While doing the hv test the steps to be followed are. Covers to use in a 3ring binder, slip handbook front cover into front pocket. Thoroughly test the switchgear at the factory with the circuit breakers in the connected. We service electrical circuit breaker panels and panelboards, motor contr. Referencing illustration a, confirm the following information and switch settings before each use. This test is important for user safety as modern switchgear is capable of switching.
Incidents during operation contact the local field sales office. Ibew 424 is proud to represent the most highly skilled electricians in alberta who are able to get the job done right and quickly. Gasinsulated switchgear gis is a spacesaving alternative to classic outdoor switchgear. This section specifies the furnishing, installation, connection and testing of the medium voltage switchgear. Inspection and testing procedures perform the same test as performed on the air and vacuum breakers with the exception of. The intent of this guide is to address the testing procedure for internal arcing faults in metalenclosed switchgear. This is often the level of acceptance test for equipment that is similar to other equipment in the plant or for equipment that has simple to moderate upgrades andor modifications. Neta testing standards below is a list of articles about electrical testing and maintenance. Ac voltage test setup and procedure setup for onesecond and sixtysecond ac voltage test methods. The inspection and test plan for switchgear article provides you information about switchgear test and switchgear inspection in manufacturing shop.
Ms28 handbook maintenance of electrical switchgear tl4. Switchgear testing requires a device for accurate sequence and timing control. High voltage test is done by applying 80% of factorytested voltage. The pdf files for these documents may be downloaded from the. Oct 28, 2016 system function test for switchgear and switchboards. Define tailored maintenance service plans under the format of short, medium, or longterm. Functional test is to be done according to the drawings given. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. Medium voltage switchgear ax1 is described in many different publications and even in a multimedia presentation on cdrom. System function tests should be performed in accordance with ansinetaats section 8 during initial switchgear switchboard acceptance. The timing pattern of the be3200 can be synchronized to the mains generator, the external mains or derived from an internal timer. Switchgear, transformers, cables, overhead lines, surge arresters, voltage transformers, current transformers, unit substations.
Interview crews about problems they may have encountered. In an electric power system, switchgear is composed of electrical disconnect switches, fuses or. This will present the windows explorer open windowdialogue. Test procedure shall be as follows, and the results for each cable test shall be recorded as specified herein. Inspect anchorage, alignment, grounding, and required area clearances.
If the switchgear is going to be installed as soon as it has been received, unpack it and handle it according to the procedure outlined in the following paragraphs. Remove grounds and then test to ensure you have no unintentional grounds. In the 1970s, principally in europe, interest arose in evaluating electrical equipment under conditions of internal arcing. Switchboard installation and maintenance manual dir 510.
A detailed description of construction requirements. Testing distribution switchgear for partial discharge mr. April 17, 2012 itc holdings corp mike mcnulty, environmental department joe jasinski, asset management. The test shall be carried out on a complete switchgear including its control and auxiliary circuits. Manual installation commissioning environment and recycling. Inspection, test and measurement procedures for lv and mv up to 36kv switchgears on photo eaton cutler hammer magnum ds switchgear inspection, and transformer testing for mv switchgear similar considerations apply although more extensive checks on protective devices, circuit breaker oil, vacuum bottle contact distances are required as. Marine pollution control developed work practices for the gas equipment. Knowhow in particular techniques, procedures, test equipment. The low insulation distances are guaranteed by the high dielectric strength of the sulfur hexafluoride sf 6 gas. Demonstrate the maintenance, testing procedures used for different voltage switchgear apply the safety precautions of p. Testing and commissioning requirements for switchgear.
Dc overvoltage test to ascertain suitability of plant for energisation. Electrical switchboard switchgear testing and commissioning manual from 3. Visual and mechanical inspection inspect and service the operating mechanism. Epas 2012 workshop on sf6 e i i r d tisf6 emission reduction strategies. Type testing internal arctype testing internal arc. Ibew 424 is the right choice for albertas electricians and contractors. After installation of the switchboards, all the bus bar bolts are torque tested. The dc voltage scale on your digital volt ohm meter dvom or digital multimeter can be used to measure the voltage drop across a load, device or conductor. Equip the mechanism for manual opening of the contacts during loss of normal. Verify the control circuit check motion of the moving parts validate time of operation verify manufacturer specs determine contact wear demonstrate results of maintenance assess overall breaker capability. Ground continuity test 18 polarization test 19 ground bond test 19 insulation resistance test 20 measurement procedure 21 dielectric absorption 21 charging current 21 leakage current 21 leakage current test 22 what is a safe level of leakage. The remainder of the world, with the exception of a few isolated locations, utilizes iec 604391 as the basis for lowvoltage switchgear construction and test procedures. Information flyer gasinsulated switchgear factory acceptance.
While doing the hv test the steps to be followed are as below. Electrical engineers that perform maintenance, cleaning, testing, repair, and infrared inspection of indoor and outdoor switchgear. With central elements such as busbars, disconnectors and circuit breakers, switchgears represent the hubs of electrical energy grids. Dielectric test on the main circuit iec 62271102 7. Chair, ieee high voltage testing techniques subcommittee fall 2016 ieee switchgear committee meeting october 9, pittsburgh, pa 1 ieee standard for highvoltage testing techniques. If you have any questions about neta standards and specifications, or acceptance testing, contact us. Perform a power factor test on each pole open and closed and each bushing. Pdf mv switchgear inspection and test procedure find, read and cite all the research you need on researchgate. How we measure reads a read is counted each time someone views a publication summary. Individual product startup procedures must be submitted and on file with startup. Test voltages shall not exceed 80 percent of cable manufacturers factory test value or the maximum test voltage in table 100. Switchgear and switchboard inspection and testing guide.
The procedure for system functional testing exceeds far beyond the scope of this document. When performing maintenance programs, clean the assembly using electircal industry accepted methods of cleaning. If the switchgear has been damaged, file a claim as soon as possible with the carrier and notify the nearest iem representative. Measurement of the resistance of the main circuit iec 62271102 7. Engage the controller in the manual mode and step through the. Inspection, testing and commissioning of electrical. Maintenance of electrical switchgear ms28, tl4 11 chapter 1 introduction 110 purpose 111 scope this handbook contains information on safety practices and environmental considerations when working on switchgear, descriptions of typical classes of switchgear, and preventive and corrective maintenance guidelines for switchgear.
Dlro contact resistance insulation testing megger test perform a contactpole resistance test. Electrical insulation testing of hv equipment up to 33kv. All outputs and inputs of the be3200 are fiber optically isolated. Technical specification for startup and commissioning of new. It must be clear that the tests to be conducted as part of promotion project are mainly dc current interruption tests. Read pdf lv switchgear design guide schneider library book, pdf and such as. Arrangement of bus bar, circuit breaker and isolator. Operation and maintenance of a gas insulated substation. The main focus of the test procedure are the following points. Applicable to all metalenclosed lowvoltage ac power circuit breaker switchgear assemblies designed, tested. Previous testing policys were based on the 1937 electricity supply regulations which obliged distribution network operators, to undertake electrical tests prior to connection of equipment to the. This checklist does not take the place of the manufacturers recommended checkout and startup procedures or report. Inspection and test plan reference document acceptance criteria verifying document 1. The draft inspection and test plan provided as well.
Mv switchgear inspection and test procedure preprint pdf available october 2019. You request loading of a design input file in the welcome to the switchgear specification form, ie. Electrical switchboard switchgear testing and commissioning. Duri ng normal h v test s on sw itchgear or gi s, the cts are inc luded in the h v test. Reasons for testing contd performing timing tests is the best way to.
A quick and reliably opening lvmv circuit breaker is now a strategic function. Evaluates sf6 gas equipmentassets and schedules the repair and replacement of equipment. System function test for switchgear and switchboards. The be3200 is a high speed test sequencer for switchgear applications. Iec and ieee standards for highvoltage switchgear and. The files are in wordexcel format and instantly available after you pay the cost of only 2.
System function tests should be performed in accordance with ansinetaats section 8 during initial switchgearswitchboard acceptance. Mounting of specimen for testing radiation instrument to verify the xradiation. Order additional copies of documents in this series either by. For doing r phase the other phases are shorted and earthed. If this form is not used for documenting, one of similar rigor shall be used. Inspection, test and measurement procedures for lv and mv. Applies to all mediumvoltage metalclad switchgear assemblies designed, tested and manufactured in accordance with ieee c37. Discussion of next steps after the fat is completed, topics regarding shipping, installation, service or others can be discussed.
Moreover, our industrialized processes and quality controls. Medium voltage switchgear specification page 1 medium voltage metal clad switchgear part 1 general 1. Testing distribution switchgear for partial discharge. In north america mostly ieee and ansi standards are used, much of the rest of the. Download method statement for mv lv switchgear or panel click buy now and download instantly. Molded case circuit breaker systems testing with conductors. Procedure h r a 7 switchgear mechanical operation test procedure iec, nec, nema, fdf, iso ansi, ci, ipcea iec, nec, nema, fdf, iso ansi, ci, ipcea procedure h r a inspection and test plan for switchgear before manufacturing materials activity by no. Factory acceptance testing level 1 fat overview a level 1 fat is the most basic level of equipmentsystem testing conducted at the oem. Xradiation test procedure for vacuum interrupters clause 6. However, in this document a general test procedure is presented. Download method statement for mv lv switchgear panel. Pdf mv switchgear precommissioning inspection format find, read and cite all the research you need on researchgate. This report shall not be reproduced, except in full, without the written approval of the issuing testing laboratory. Remove barricades and signs, and follow appropriate procedures to clear the lockouttagout condition.
Insulation resistance, ac hipot, dc hipot, low resistance test. Switchgear, transformers, cables, overhead lines, surge arresters. In this article i go to share the actual what we do in after panel switchgear installation and what are the procedure of switchgear testing and commissioning. This standard provides information essential to designing and testing of metalclad switchgear. Ac power frequency overvoltage test to ascertain suitability of plant for energisation. Comparison of ansiieee requirements for lowvoltage. The current version of controlled and reference documents is held on the energy networks. Required tests for switchgear and its components test denomination standard sub clause value 1. The complete guide to electrical insulation testing.
Usually, nonfaultinitiating earthing switches have the same type of operating mechanisms and method of discovering switch status as disconnect switches. Dufournet, january 2008, swicon 2008 2 iec and ieee standards for highvoltage switchgear and controlgear content introduction to iec technical committee 17. The testing procedure is done to confirm the technical information as well as safe operation of the gis over its life duration. Current limiting reactors in power system and their. Study and testing of thermal overload relay for induction motor protection 1823 5. Switchgear testing and commissioning procedure busbar torque test. The megger insulation tester is essentially a highrange resistance meter ohmmeter with a builtin directcurrent generator. Jun 16, 2016 performing a high potential test at 18. Connect the negative test lead to the other end of the wire of the component. The test w ill carry out at test vol tage 38 kv fore 60 second.
Inspect physical, electrical, and mechanical condition including evidence of moisture or corona. Xradiation test procedure for vacuum interrupters the purpose of this type test is to verify that the xradiation emitted from vacuum interrupters does not exceed specified limits. As in north america, european countries construct and test lowvoltage switchgear to individual country standards. Voltage drop testing is a simple but effective method of diagnosis to quickly locate highresistance problems in a circuit. All material can be ordered from abb kraft ab on telephone int.
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