In north america mostly ieee and ansi standards are used, much of the rest of the. Medium voltage switchgear ax1 is described in many different publications and even in a multimedia presentation on cdrom. Switchboard installation and maintenance manual dir 510. 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. Dufournet, january 2008, swicon 2008 2 iec and ieee standards for highvoltage switchgear and controlgear content introduction to iec technical committee 17. Switchgear testing requires a device for accurate sequence and timing control. Remove barricades and signs, and follow appropriate procedures to clear the lockouttagout condition. Medium voltage switchgear specification page 1 medium voltage metal clad switchgear part 1 general 1. The complete guide to electrical insulation testing. This test is important for user safety as modern switchgear is capable of switching. Electrical equipment site acceptance testing eaton. In the 1970s, principally in europe, interest arose in evaluating electrical equipment under conditions of internal arcing.
Interlocking shall be provided as shown on the drawings and as required for the safety of personnel and safe operation of the equipment. Download method statement for mv lv switchgear or panel click buy now and download instantly. Test procedure shall be as follows, and the results for each cable test shall be recorded as specified herein. Electrical switchboard switchgear testing and commissioning manual from 3. System function test for switchgear and switchboards. The current version of controlled and reference documents is held on the energy networks. Demonstrate the maintenance, testing procedures used for different voltage switchgear apply the safety precautions of p. When performing maintenance programs, clean the assembly using electircal industry accepted methods of cleaning. The test procedure described are applicable to metal clad switchboards. Inspection, testing and commissioning of electrical. Visual and mechanical inspection inspect and service the operating mechanism.
This standard provides information essential to designing and testing of metalclad switchgear. The low insulation distances are guaranteed by the high dielectric strength of the sulfur hexafluoride sf 6 gas. The test shall be carried out on a complete switchgear including its control and auxiliary circuits. The procedure for system functional testing exceeds far beyond the scope of this document. Order additional copies of documents in this series either by. For good insulation, the resistance usually reads in the megohm range. 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.
The be3200 is a high speed test sequencer for switchgear applications. The files are in wordexcel format and instantly available after you pay the cost of only 2. 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. Applies to all mediumvoltage metalclad switchgear assemblies designed, tested and manufactured in accordance with ieee c37. Based on iec and ieee standards for highvoltage switchgear and. Dlro contact resistance insulation testing megger test perform a contactpole resistance test. Individual product startup procedures must be submitted and on file with startup. Electrical insulation testing of hv equipment up to 33kv. Jun 16, 2016 performing a high potential test at 18. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms.
Duri ng normal h v test s on sw itchgear or gi s, the cts are inc luded in the h v test. While doing the hv test the steps to be followed are. The pdf files for these documents may be downloaded from the. Electrical engineers that perform maintenance, cleaning, testing, repair, and infrared inspection of indoor and outdoor switchgear. Testing distribution switchgear for partial discharge. Information flyer gasinsulated switchgear factory acceptance. Download method statement for mv lv switchgear panel testing.
Measurement of the resistance of the main circuit iec 62271102 7. 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. Covers to use in a 3ring binder, slip handbook front cover into front pocket. Arrangement of bus bar, circuit breaker and isolator.
Connect the negative test lead to the other end of the wire of the component. Iec and ieee standards for highvoltage switchgear and. Epas 2012 workshop on sf6 e i i r d tisf6 emission reduction strategies. The principal standard for lowvoltage power switchgear and controlgear assemblies is bs en 614392, when read in conjunction with the general rules document, bs en 614391 assemblies conforming to this standard are deemed to satisfy the essential requirements of both the low voltage directive and the emc directive and may bear the ce marking.
All material can be ordered from abb kraft ab on telephone int. The testing procedure is done to confirm the technical information as well as safe operation of the gis over its life duration. The inspection and test plan for switchgear article provides you information about switchgear test and switchgear inspection in manufacturing shop. Current limiting reactors in power system and their. Manual and automatic measurements tripping times, primary current based on. Switchgear and switchboard inspection and testing guide testguy. No damage evident inspect panels and doors for proper fit and alignment equipment labels permanently affixed panel is clean and clear of dust or dirt. You request loading of a design input file in the welcome to the switchgear specification form, ie. Molded case circuit breaker systems testing with conductors. Reasons for testing contd performing timing tests is the best way to. Gasinsulated switchgear gis is a spacesaving alternative to classic outdoor switchgear. With central elements such as busbars, disconnectors and circuit breakers, switchgears represent the hubs of electrical energy grids. Ms28 handbook maintenance of electrical switchgear tl4. Switchgear and protective devices 2015 1 p a g e lecture notes on.
Switchgear testing and commissioning procedure busbar torque test. If this form is not used for documenting, one of similar rigor shall be used. Dielectric test on the main circuit iec 62271102 7. Testing distribution switchgear for partial discharge mr. Switchgear, transformers, cables, overhead lines, surge arresters. Mv switchgear inspection and test procedure preprint pdf available october 2019. Pdf mv switchgear precommissioning inspection format find, read and cite all the research you need on researchgate. Evaluates sf6 gas equipmentassets and schedules the repair and replacement of equipment. Factory acceptance testing level 1 fat overview a level 1 fat is the most basic level of equipmentsystem testing conducted at the oem. Medium voltage switchgear construction checklist page 3 of 6 version 0206 inspect for physical, electrical and mechanical condition of equipment and cabinet. Go to testing areas customer views his product in its actual testing environment.
Procedure in cases where pressure testing is not possible. Included herein are preferred ratings, required design test procedures, and acceptance criteria. This section specifies the furnishing, installation, connection and testing of the medium voltage switchgear. In an electric power system, switchgear is composed of electrical disconnect switches, fuses or. However, in this document a general test procedure is presented. A quick and reliably opening lvmv circuit breaker is now a strategic function. Usually, nonfaultinitiating earthing switches have the same type of operating mechanisms and method of discovering switch status as disconnect switches. If the switchgear has been damaged, file a claim as soon as possible with the carrier and notify the nearest iem representative. Chair, ieee high voltage testing techniques subcommittee fall 2016 ieee switchgear committee meeting october 9, pittsburgh, pa 1 ieee standard for highvoltage testing techniques. Neta testing standards below is a list of articles about electrical testing and maintenance.
Required tests for switchgear and its components test denomination standard sub clause value 1. Read pdf lv switchgear design guide schneider library book, pdf and such as. System function tests should be performed in accordance with ansinetaats section 8 during initial switchgear switchboard acceptance. 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. Download method statement for mv lv switchgear panel. System function tests should be performed in accordance with ansinetaats section 8 during initial switchgearswitchboard acceptance. This report shall not be reproduced, except in full, without the written approval of the issuing testing laboratory. Mounting of specimen for testing radiation instrument to verify the xradiation. As in north america, european countries construct and test lowvoltage switchgear to individual country standards. April 17, 2012 itc holdings corp mike mcnulty, environmental department joe jasinski, asset management. Perform a trip and close test with the control and a trip test with the relays. Ibew 424 is the right choice for albertas electricians and contractors. 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.
Xradiation test procedure for vacuum interrupters clause 6. Ac voltage test setup and procedure setup for onesecond and sixtysecond ac voltage test methods. Preventive maintenance preventive maintenance consists in carrying out, at predetermined intervals or according to prescribed criteria, checks intended to reduce the probability of a. Ibew 424 is proud to represent the most highly skilled electricians in alberta who are able to get the job done right and quickly. Engage the controller in the manual mode and step through the. Voltage drop testing is a simple but effective method of diagnosis to quickly locate highresistance problems in a circuit.
Comparison of ansiieee requirements for lowvoltage. Switchgear and switchboard inspection and testing guide. Testing and maintenance of protective gear, protection against surgesurge absorber, surgediverter. Remove grounds and then test to ensure you have no unintentional grounds. Incidents during operation contact the local field sales office. Gasinsulated switchgear gis is very compact and therefore represents a spacesaving alternative to classic airinsulated installations. Thoroughly test the switchgear at the factory with the circuit breakers in the connected. All outputs and inputs of the be3200 are fiber optically isolated. Manual installation commissioning environment and recycling. 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. This document is not part of a manual but it is published to the energy networks internet site.
Study and testing of thermal overload relay for induction motor protection 1823 5. 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. The draft inspection and test plan provided as well. Inspection and test plan reference document acceptance criteria verifying document 1. It must be clear that the tests to be conducted as part of promotion project are mainly dc current interruption tests. This checklist does not take the place of the manufacturers recommended checkout and startup procedures or report. The megger insulation tester is essentially a highrange resistance meter ohmmeter with a builtin directcurrent generator. Applicable to all metalenclosed lowvoltage ac power circuit breaker switchgear assemblies designed, tested. Inspect anchorage, alignment, grounding, and required area clearances. We service electrical circuit breaker panels and panelboards, motor contr. This will present the windows explorer open windowdialogue.
Ac power frequency overvoltage test to ascertain suitability of plant for energisation. Equip the mechanism for manual opening of the contacts during loss of normal. Electrical distribution maintenance services guide schneider. Referencing illustration a, confirm the following information and switch settings before each use. Interview crews about problems they may have encountered. Perform a power factor test on each pole open and closed and each bushing. Switchgear shall conform to the arrangements and details of the drawings and space designed for installation. 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. Oct 28, 2016 system function test for switchgear and switchboards. A perfect condition of the insulation is essential.
The main focus of the test procedure are the following points. Operation and maintenance of a gas insulated substation. Inspect physical, electrical, and mechanical condition including evidence of moisture or corona. For doing r phase the other phases are shorted and earthed. 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. Test voltages shall not exceed 80 percent of cable manufacturers factory test value or the maximum test voltage in table 100. The timing pattern of the be3200 can be synchronized to the mains generator, the external mains or derived from an internal timer. Electrical switchboard switchgear testing and commissioning. Discussion of next steps after the fat is completed, topics regarding shipping, installation, service or others can be discussed. High voltage test is done by applying 80% of factorytested voltage.
Type testing internal arctype testing internal arc. 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. The tool invites you to complete four types of design input data forms levels of information, i. Technical specification for startup and commissioning of new.
Inspection, test and measurement procedures for lv and mv. Knowhow in particular techniques, procedures, test equipment. The switchgear specification manager will be subject to new releases andor revisions accordingly. Moreover, our industrialized processes and quality controls. A detailed description of construction requirements. After installation of the switchboards, all the bus bar bolts are torque tested. Functional test is to be done according to the drawings given. While doing the hv test the steps to be followed are as below. S horted the cts secondary to ground and isolat ed from relays and m eters. Define tailored maintenance service plans under the format of short, medium, or longterm. 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. The test w ill carry out at test vol tage 38 kv fore 60 second. If you have any questions about neta standards and specifications, or acceptance testing, contact us. Insulation resistance, ac hipot, dc hipot, low resistance test.
Inspection and testing procedures perform the same test as performed on the air and vacuum breakers with the exception of. Sf6 equipment maintenance, repair, and replacement and. 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. 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.
How we measure reads a read is counted each time someone views a publication summary. Pdf mv switchgear inspection and test procedure find, read and cite all the research you need on researchgate. Testing and commissioning requirements for switchgear. Switchgear, transformers, cables, overhead lines, surge arresters, voltage transformers, current transformers, unit substations. Dc overvoltage test to ascertain suitability of plant for energisation. Marine pollution control developed work practices for the gas equipment. The intent of this guide is to address the testing procedure for internal arcing faults in metalenclosed switchgear.
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