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GB 50150-2006: Standard for hand-over test of electric equipment electric equipment installation engineering Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Obsolete GB 50150: Historical versions
Similar standardsGB 50150-2006: Standard for hand-over test of electric equipment electric equipment installation engineering---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB50150-2006 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA. Standard for Hand-Over Test of Electric Equipment Electric Equipment Installation Engineering Issued on: JUNE 20, 2006 Implemented on: NOVEMBER 1, 2006 Ministry of Construction of the Pe6ple's Republic of China Jointly issued by. General Adminim-ation of Quality Supemion, Inspection and Quarantine of the People's Republic of China Table of ContentsGeneral ... I 2 Terms ... 4 3 Synchronous Generator and Phase Modifier ... 6 4 DC Machine ... 14 5 Intermediate-Frequency Generator ... 16 6 AC Motor ... 18 7 Power Transforn1er ... 21 8 Reactor and Arc-Suppression Coil... 30 9 Instru1nent Transfonner ... 32 ' I 0 Oil Circuit Breaker ... 39 11 Air and Magnetic Blow-out Circuit Breaker ... 45 12 Vacuum Circuit Breaker ... 4 7 13 Sulfur Hexafluoride Circuit Breaker ... 49 14 Sulfur Hexafluoride Enclosed Switchgear ... 52 15 Disconnecting and Load Switches and High-Voltage Fuse ... 54 16 Bushing ... 56 17 Suspension and Post Insulators ... 59 18 Power Cable Lines ... 60 19 Capacitor ... 64 20 Insulation Oil and SF6 Gas ... 66 21 Lightning Arrester... 69 22 Electrical Precipitator ... 71 23 Secondary Circuit ... 74 24 Distribution Equipment and Feeder Circuits with Voltage not above I kV ... 75 25 Overhead Power Lines above 1 kV ... 76 26 Ground ing Connection ... 77 27 Low-Voltage Apparatus ... 79 Appendix A Power-Frequency Voltage-Withstanding Test Voltage Standard on High-Voltage Electric Equipment Insulation ... 81 Appendix B Conversion Coefficients of Insulation Resistance Converted into the Ones at Operating Temperature about Stator's Winding of Generator ... 82 Appendix C Partial Discharge Test Methods ofTransformer ... 83 AppendixD DC Leakage Current Reference Value of Oil-Immersed Power Transformer Winding ... 86 Appendix£ Measuring Methods for Protection-Level Excitation Curve about Current Transformer ... 87 Appendix F Test Methods and Requirements on Cross- interconnecting Systems of Power Cable Lines ... 93 Appendix G Table of Special Test Items ... 95 Word Diction of the Standard ... 96 1 General 1.0.1 This Standard has been worked out for the purpose of meeting demands of hand-over test of electric equipment-electric equipment installation engineering and promoting the extension and application on new technologies of hand-over test of electric equipment. 1.0.2 The standard applies to hand-over tests of electric equipment newly installed as 500kV voltage grade and the below and qualified through tests according to national relevant standards of routine test. The standard does not apply to electric equipment installed under coal mine or in other places with explosive hazards. 1.0.3 Hand-over tests about the devices of relay protection, automation, telemechanics, communication, measurement, and rectification and the mechanical part of electric equipment, shall be carried out respectively according relevant standards or criteria. 1.0.4 AC voltage withstanding tests shall be done for electric equipment according to the standard, but as to electric equipment with 11 OkV voltage level and the above, the AC voltage withstanding test may not be employed in case of no provisions in clauses of the standard. Upon AC voltage withstanding test, the duration after the increase of the voltage of test standard shall be 1 min in case of no special instruction. Voltage value of withstanding test is calculated according the multiples of rated voltage, the one for generator and electric motor according to rated voltage of nameplate. The one for cable may be calcu lated by methods stipulated in Chapter 18 ofthe standard. The voltage value of AC withstanding test of electric equipment with non-standard voltage level can be calculated by interpolation method according to proportions based on adjacent voltage levels stipulated in the standard, if with no stipulations. Upon insulation test, except the whole sets of equipment assembled by manufacturers, all equipment connected may be separated for single test. Equipment with the same test standard can be connected to be tested. For the convenience to the in-situ test, e lectric equipment at the same voltage level with different test standards and routine test records can also be connected for tests, if single test will have difficulty. The test standard shall be the lowest standard among all connected equipment. Insulating tests of Oil-immersed transformer and reactor can be started after they are filled with qualified oil and allowed to stand for a certain period of time to eliminate bubbles. The standing time shall be implemented according to requirements of manufacturer. In case of no regulations by manufacturer, the time must be over 72h if the voltage level is 500kV, over 48h if the voltage level is 220~330kV and over 24h if the voltage level is 11 Ok V and the below. 1.0.5 Upon the measurement and test about electric insulation, if only a few items cannot satisfY provisions of the standard, comprehensive judgment shall be made based on the all-round test records. Those which are judged that they can be operated can be put into operation. 1.0.6 If the rated voltage of electric equipment is different from the rated working voltage in actual uses, the standards of test voltage shall be determined according to following provisions. 1 When the insulation is enhanced on electric equipment with higher rated voltage, it shall be done according to test standards of rated voltage; 2 When electric equipment with higher voltage level meets the generality of products and requirements on mechanical strength, it can be done according to test standards of rated working voltage in actual uses of equipment; 3 When electric equipment with higher voltage level meets the requirements of areas at high altitudes above sea levels 1.0.7 Under all test related to temperature and humidity, the temperature and humidity around tested substances shall be measured at the same time. Insulating test shall be carried out in good weather and under the conditions that the temperature around tested substances and instrument may not be lower than s·c and the air relative humidity may not be higher than 80%. Test data measured under the conditions of temperature and humidity mentioned above shall be analyzed comprehensively to judge whether electric equipment can be put into operation or not. Under test, attentions shall be attached to the influence by environmental temperature. As to oil-inunersed transformer, reactor and arc-suppression coil, the oil temperature at upper level of tested substances shall be considered as testing temperature. The range of normal temperature stipulated in the standard is 10-40·c. 1.0.8 Measurement on insulation resistance listed in the standard, the value of insulation resistance of 60s shall be used; the ratio between values of 60s and I Ss insulation resistances shall be applied for the measurement on absorptance; polarization indexes shall be the ratio between values of insulation resistances of 10 min and 1 min. 1.0.9 When insulating test is done for multiple-winding equipment, short-circuit grounding shall be given to non-tested winding. 1.0.10 Under the measurement about insulation resistance, voltage levels in megohmmeter shall be applied. In case of no special provisions in the standard, following provisions shall be implemented.2 Terms2.0.1 Power transformer In order to transmit power energy, under the same frequency, the static equipment with two or more than two windings, shall convert the AC voltage and current of one system into the voltage and current of another system. Usually values of these voltages and currents are different. 2.0.2 Oil-immersed type transformer Transformer where the iron core and winding are all immersed into oil. 2.0.3 Dry-type transformer Transformer where neither iron core nor winding is immersed into insulating liquid. 2.0.4 Neutral terminal For three-phase transformer or the three-phase unit consisting of single-phase transformer, it refers to the terminals connecting the common points (neutral points) of star or zigzag connection. For single-phase transformer, it is the terminal connecting neutral points of network. 2.0.5 Winding A turn of electric lines corresponding to one voltage value marked on transformer. 2.0.6 Tapping In transformer with tapping winding, every tapping connecting of this winding aU indicates this winding of tapping. Effective number of turns with some determ ined value also indicate ratio of turns between this tapping winding and any other winding with unchanged turns. 2.0.7 Non-uniform insulation of a transformer winding If the neutral terminal of transformer winding is grounded directly or indirectly, the insulation level of the neutral terminal is lower than the one stipulated for line terminal. 2.0.8 Uniform insulation of a transformer winding Outgoing line terminals connected between all winding and terminals of transformers are of the same rated insulation level.3 Synchronous Generator and Phase Modifier3.0.1 Test items of synchronous generator and phase modifier with the capacity as 6000kW and the above shall include fo llowing contents. 1 Measurement on insulation resistance and the absorptance or polarization index of stator's winding; 2 Measurement on direct-current (DC) resistance of stator's winding; 3 DC voltage-withstanding test and leakage-current measurement on stator 's winding; 4 AC voltage-withstanding tests on stator are winding; 5 Measurement on insulation resistance of rotator's winding; 6 Measurement on D... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |