Alan mark franks avo training institute, senior cable instructor and curriculum advisor cable testing standards. Inspection and test procedures for rotating machinery. Testing of ht motors mechanical engineering electrical. Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. Well learn how to identify windings, check windings resistance and insulation resistance. Department of energys office of industrial technologies oit with input from trade associations, consulting companies, manufacturers, nonprofit corporations, and others. The test voltages for motor andor generator windings are usually the following, where e operating lineline voltage. The test procedures referenced on this page are related to enginebased exhaust emission standards.
Lines in external pressure service shall be subjected to an internal test. Motor performance data can be recorded in the system database for comparison and statistical analysis. Recommended interpretation of iec 6003421 external contact seals at the drive shaft extension ends shall be removed prior to testing. Ir value will be usually high several hundred megaohms for a dry insulation system. These conditions result in a decrease in the surfacetosurface contact area with an associated increase in surfacetosurface contact resistance, ultimately causing excessive heating at the junction. The copper is a conduit for the stator winding current. The checklists are in pdf format and can be completed electronically or printed and used as hard copy. That is, with the same test connections and with the same test voltage applied for the same length of time. The speed of an ac motor depends on the frequency of the input power and the number of poles for which the motor is wound. Megger guide to electrical insulation testing pdf instrumart. Hipot testers usually connect one side of the supply to safety ground earth ground. Dropforged eyebolts per american society of testing materials a489 or equivalent must be used. All induction motors are tested before shipment from the factory. All types of engines are subject to the procedures in 40 cfr part 1065, excluding aircraft engines and those that require vehicle testing, though these procedures continue to be optional during a.
The objective of these procedure is to specify minimum mandatory requirements and advisory guidance for identifying and controlling hazards to ensure zero harm with regard to operation maintenance and testing of electrical equipment. A requirement for loads up to 150% requires that the measurement system. Testing of ht motors free download as powerpoint presentation. Motor power switching is done automatically by the system. Testing of increased safety ht induction motor for hazardous area.
The term motor used in this checklist refers to all kinds of motors ge produced which are stated in section 4 in this document. The third party inspection for induction motor article provides a sample procedure instruction for induction motor testing and induction motor inspection in manufacturing shop. Testing manual for electrical equipment requirements are fulfilled. Some of the electrical energy supplied to the stator is read more power flow in an induction motor. For this motors, we require three phase power supply, whereas thus three phase power must be supplied in a sequence. Motor testing methods based on iec 6003421 p ll determined from residual loss 8. Isbn 07389785 ss95211 no part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. A wide range of dmms are available to measure voltage, current, and resistance, depending on the motor power ratings. Home technical articles testing and commissioning procedure for electric motors scope of motor testing it should be noted that the scope of motor testing depends upon the motor type and size, this being indicated on the inspection forms. Introduction the procedures stated in this document cover the activities in preliminary tests and inspections, functional performance tests and the commissioning of newly completed installations and existing ones after major alteration. Inspection, testing and commissioning of electrical.
The tests and assessment for the ex e motors are as follows. Testing manual for electrical equipment nahed alhajeri 1and anantha madhavan 2 abstract quality assurance qa refers to a program for the systematic monitoring and evaluation of the various aspects of a project, service, or facility to ensure that standards of quality are being met. The induction motor is visually inspected for o utside view such as rust, scratch, and bruise, coasting color and finish, description on name plate, mounting direction of terminal box and protection type of frame. Complex, powerful tools, electric motors are critical components in a wide range of equipment and. Motor test for medium voltage mv and high voltage hv. Test results of surge protection devices shall be in accordance with procedures for testing of lv surge arresters. A protocol involving voltage level, time duration, intervals between tests and connection methods must be composed, taking into account the type and size of the equipment, its value and role in the production process and other factors.
The complete guide to electrical insulation testing. Dec 30, 2018 testing of induction motor december 30, 2018 february 24, 2012 by electrical4u demand of energy is growing day by day and along with it cost of energy rising abruptly, so now it is necessary that the health of large motors which consumes maximum power should be taken care off. Third party inspection for induction motor procedure. Model repair specifications for low voltage induction motors. Scribd is the worlds largest social reading and publishing site. Other examples include identifying a pinhole defect in insulation or finding an enlarged solder footprint. The design and engineering department is well equipped with computer aided design cad systems and drafting facilities for accurate and quick preparation of design and execution. This standard provides the basic test procedure for evaluating the performance of a. Rules for classification and construction, i, part 1, chapter 3 electrical installations regulations for the performance of type tests, part 0, procedure test requirements for electrical electronic equipment, computers and peripherals, part 1.
Lowcost portable unit, with all the major motor performance tests of the motorlab system. Mar 28, 2018 in this video you will find out how to test 3phase induction motor. Rules for classification and construction vi additional rules. Conduct locked rotor tests on 3phase induction motors conduct noload tests on 3phase induction motors. Test to obtain more reliable values ranges of both wattmeter should be 10a, 250v for blocked rotor test.
Electric motor repair, model repair specifications for low voltage motors, and motor repair tech brief were produced by the u. Completely read each procedure while looking at the actual parts before beginning. Tests are required to check the condition of the induction motor and to. With the supply connected like this there are two places a given conductor can be connected. Acceptance and maintenance testing of medium voltage power cables. Energy meter testing, energy meter repairing, energy meter. Certain tasks identified as optional or if equipped refer to an optional motor test which may or may not be applicable to other ranges of motors. Rtd circuits shall be in accordance with system design intent and machine protection device. A wellplanned preventive maintenance program is the key to dependable, longlife operation of motors and generators. The recorded temperature should not beyond acceptance range specified in test procedure or motor datasheet. The acceptance criteria shall be based on supplier approved motor routine testing procedure, but normally the calculated losses shall be less than of 110% of the theoretical loss.
Perform a visual inspection of the motor components for the presence of. Jul 06, 2016 a dmm digital multimeter, such as this keithley dmm7510 from tektronix, is a musthave instrument for motor testing. Some of the electrical energy supplied to the stator is read more. Ip test is conducted especially to determine the dryness and cleanliness of the insulation. Sop for operation and maintenance of low tension lt panels. They can be quite different for one motor or machine tested three days in a row, yet not mean bad insulation. The other side of the supply is connected to the conductor being tested. Testing of induction motor december 30, 2018 february 24, 2012 by electrical4u demand of energy is growing day by day and along with it cost of energy rising abruptly, so now it is necessary that the health of large motors which consumes maximum power should be taken care off. Commissioning tests for hv underground cables up to 33kv swp page 2 of standard work practice sp0407 ver 16 ergon energy corporation limited abn 50 087 646 062 work site communication equipment e.
Tests results are provided graphically and tabulated. Rules for classification and construction vi additional. In this video you will find out how to test 3phase induction motor. Ht motors mainly scim, limited form can be applied to slip ring motors machine requirements. Although management probably realizes the value of a good preventive maintenance pm program, they. Apr 15, 2020 in the induction motor, as in all motors, electrical energy is converted into mechanical energy. Testing 100% routine test quality is emphasised at each step as a motor proceeds through each stage of design, assembly and testing. Thoroughly understand what is to be done and follow the procedure step by step. Testing and assessment of ex e motor the designed ex e ht squirrel cage induction motor are tested and assessed for performance of motor to ensure that these designed motor will not be unsafe in hazardous area. Testing and commissioning procedure for electrical installation 1. Ht motor testing manual readdownload this service manual has been prepared by parker hannifin corporation for or testing reveals evidence of abnormal wear or damage to the tgk motor or if you. Discuss what to inspect and look for during a visual inspection of the ignition system. That is, the motor shall not be dismantled to remove sealing elements.
Describe how to test the ignition system using an oscilloscope. The high cost of the resultant downtime eats deeply into profits. Motor current signature analysis mcsa is a proven and accepted method for determining the condition of a motors current carrying components. Compare bolted connection resistances to values of similar connections. In insulation resistance test, a high dc voltage is. Testing of ht motors mechanical engineering electrical engineering. Motor current signature analysis mcsa is a proven and accepted method for determining the condition of a motor s current carrying components. How to test a threephase motor with a megger hunker. Ensure that the rotor is level before starting the procedure. A guide to low resistance testing test equipment depot. In modern plant operations, unscheduled stoppage of production or long repair shutdowns are intolerable. This installation and maintenance manual has been written to assist the user with proper procedures when handling, installing, operating and maintaining the equipment. Additional special tests beyond the routine test are.
Electrical inspection checklists this pdf contains 77 electrical inspection checklists taken from the 2014 electrical inspection manual with checklists. The test generally applies between 100 and 5,000 v or more. Final rule for control of air pollution from motor vehicles. This rule included new standards for motor vehicles subject to vehiclebased emission standards and test procedures, and included a wide range of amendments to part 1065. Ieee std 1122004, ieee standard test procedure for. Tandelta and capacitance test set for ht generator motor testing.
Lockrotor and noload tests et 332b ac motors, generators and power systems. Testing and commissioning procedure for electric motors eep. Hydrostatic pressure testing of piping project standards and specifications page 7 of 19 rev. Test results of motor starter equipment shall be in accordance with. To obtain short circuit current and its power factor angle, block rotor test is performed on the motor. Description of test sources with discussion of tests does not address test results or parameters refers to point documents as definitive reference ieee 400 2012 omnibus ieee guide for field testing and evaluation of the insulation of shielded power cable systems rated 5 kv and above. Engine testing regulations vehicle and fuel emissions. In the induction motor, as in all motors, electrical energy is converted into mechanical energy. Testing of increased safety ht induction motor for. Take precautions and observe safety procedures before servicing the breaker or equipment. To lay down the procedure for operation and maintenance of low tension lt panels. Improve the quality control of the project and simplify the procedures for engineers. The overspeed test is performed to make sure that rotor speed can reach to the 1.
Oct 14, 2016 11 kv hv cable megger test tamil language. Let us assume that the threephase supply given to the motor has a phase sequence of ryb, then the motor. What really matters is the trend in readings over a time period, showing lessening resistance and warning of coming problems. When testing is completed disconnect the hipot tester from the circuits under test and confirm that the circuits are clear to be reconnected and reenergized. Sealing elements that can only be removed by dismantling the motor shall be left in place. Testing can be conducted without interrupting the normal operation of the motor, and in fact should be performed when the motor is under a minimum of 70% load.
Hydrostatic testing of piping designed for external pressure. List the steps necessary to check andor adjust ignition timing on engines equipped with a distributor. Additional notes about using a megger insulation tester 33. Testing can be conducted without interrupting the normal operation of the motor, and in fact should be performed when the motor. The values associated with the testing methods shall be in accordance with the applicable table 100. Ieee std 1122004, ieee standard test procedure for polyphase. Polarization index test pi value test along with insulation resistance test ir value test is conducted on hv electrical machine to determine service condition of the insulation. Sop for operation and maintenance of low tension lt.
Third party inspection for induction motor dimensional inspection. Each motor is given a routine test as required by bs4999, as59 or nema mg 1 to determine that it is free from electrical or mechanical defects. Pictures used in the checklist are generic and may not be indicative of your specific configuration. Insulation resistance or ir test is carried out by maintenance engineers to ensure the healthiness of the overall insulation system of electrical equipment it reflects the presence or absence of harmful contamination, dirt, moisture, and gross degradation. Ieee standard test procedure for polyphase induction motors and generators 3 park avenue, new york, ny 100165997, usa ieee power engineering society sponsored by the electric machinery committee 4 november 2004 print.
Similarly the range of ammeter and voltmeter during blocked rotor test, 10a, 250v. Factory acceptance tests fat the routine tests shall be made with each electrical equipment and, whenever practicable. Consider the working of a motor for a better understanding of these indicators. It should be noted that the scope of motor testing depends upon the motor type and size, this being indicated on the inspection forms. Repeat this test procedure for all circuit phase conductors testing each phase to ground and each phase to each phase. The objective is to provide a procedure for repairs for. Turn off the power supply to the motor, usually accomplished by switching the circuit breaker. Do not lift both the motor and driven equipment with the motor lifting means. The insulation resistance and polarization index tests of an electric motor or generator has been regarded as a useful tool in evaluating its windings for build up of dirt or moisture, deterioration of the insulation, fitness for high potential tests and suitability for further operation. Third party inspection for induction motor visual inspection. This standard specification describes the requirements for the contractor to overhaul ashore in a suitable repair facility an alternating current ac induction or synchronous motor removed from a coast guard vessel.
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